Page 1 ThinkSystem SR950 V3 User Guide Machine Type: 7DC4, 7DC5, and 7DC6...
Page 2 Before using this information and the product it supports, be sure to read and understand the safety information and the safety instructions, which are available at: https://pubs.lenovo.com/safety_documentation/ In addition, be sure that you are familiar with the terms and conditions of the Lenovo warranty for your server, which can be found at: http://datacentersupport.lenovo.com/warrantylookup Fifth Edition (June 2024) ©...
Page 3: Table Of Contents
Remove an EIA flange ..Identify the server and access the Lenovo XClarity Controller ....
Page 4 PCIe riser connectors... 263 Security bezel replacement ..200 2.5-inch drive backplane cable routing ..263 ThinkSystem SR950 V3 User Guide...
Page 5 Chapter 7. System configuration . . . 273 Performance problems ..312 Set the network connection for the Lenovo XClarity Power on and power off problems ..312 Controller .
Page 6 ThinkSystem SR950 V3 User Guide...
Page 7: Safety
Vor der Installation dieses Produkts die Sicherheitshinweise lesen. Prima di installare questo prodotto, leggere le Informazioni sulla Sicurezza. Les sikkerhetsinformasjonen (Safety Information) før du installerer dette produktet. Antes de instalar este produto, leia as Informações sobre Segurança. © Copyright Lenovo 2023, 2024...
Page 8: Safety Inspection Checklist
1 & IEC 60950-1, the standard for Safety of Electronic Equipment within the Field of Audio/Video, Information Technology and Communication Technology. Lenovo assumes you are qualified in the servicing of equipment and trained in recognizing hazards energy levels in products. Access to the equipment is by the use of a tool, lock and key, or other means of security, and is controlled by the authority responsible for the location.
Page 9 Click Power ➙ Power Cables to see all line cords. • Make sure that the insulation is not frayed or worn. 3. Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo alterations.
Page 10 ThinkSystem SR950 V3 User Guide viii...
Page 11: Chapter 1. Introduction
Chapter 1. Introduction The ThinkSystem SR950 V3 server (Types 7DC4, 7DC5, and 7DC6) is a 8U rack server that supports eight Intel Xeon processors. It is an enterprise-class server designed for customers requiring eight processors, large amounts of memory, and numerous I/O connections.
Page 12: Tech Tips
The server provides a QR code on the system service label, which is on the cover of the server, that you can scan using a QR code reader and scanner with a mobile device to get quick access to the Lenovo Service Information website.
Page 13: Security Advisories
Follow the on-screen instructions to choose the category for the problem that you are having. Security advisories Lenovo is committed to developing products and services that adhere to the highest security standards in order to protect our customers and their data. When potential vulnerabilities are reported, it is the...
Page 14 Expansion slots • Six front PCIe slots • Up to eight rear PCIe slots • One OCP module slot (optional) • One rear Ethernet slot (optional) Note: PCIe slot availability is based on riser card selection. ThinkSystem SR950 V3 User Guide...
Page 15 • Lenovo XClarity Controller (XCC), which provides service processor control and monitoring functions, video controller, and remote keyboard, video, mouse, and remote drive capabilities. – The server supports Lenovo XClarity Controller 2 (XCC2). For additional information about Lenovo XClarity Controller 2 (XCC2), refer to https://pubs.lenovo.com/lxcc-overview/...
Page 16: Mechanical Specifications
Host bus adapter ThinkSystem 440-8i SAS/SATA PCIe Gen4 12Gb HBA For more information about the RAID/HBA adapters, see Lenovo ThinkSystem RAID Adapter and HBA Reference System fan Twelve fan modules (two fans in each fan module) Note: The server supports N+2 redundancy and can operate at its maximum power configuration without performance degradation with two failed fan rotors.
Page 17: Environmental Specifications
Lenovo recommends that you consult with qualified experts in this field to determine whether you are in compliance with the applicable regulations.
Page 18: Particulate Contamination
If Lenovo determines that the levels of particulates or gases in your environment have caused damage to the device, Lenovo may condition provision of repair or replacement of devices or parts on implementation of appropriate remedial measures to mitigate such environmental contamination.
Page 19: Management Options
Table 1. Limits for particulates and gases Contaminant Limits Reactive gases Severity level G1 as per ANSI/ISA 71.04-1985 • The copper reactivity level shall be less than 200 Å/month (Å/month ≈ 0.0035 μg/cm -hour weight gain). • The silver reactivity level shall be less than 200 Å/month (Å/month ≈ 0.0035 μg/cm -hour weight gain).
Page 20 Portable and light toolset for server configuration, data collection, and firmware updates. Suitable both for single-server or multi-server management contexts. Interface • OneCLI: CLI application Lenovo XClarity Essentials • Bootable Media Creator: CLI application, GUI application toolset • UpdateXpress: GUI application Usage and downloads https://pubs.lenovo.com/lxce-overview/ ThinkSystem SR950 V3 User Guide...
Page 21 Important: Lenovo XClarity Provisioning Manager (LXPM) supported version varies by product. All versions of Lenovo XClarity Provisioning Manager are referred to as Lenovo XClarity Provisioning Manager and LXPM in this document, unless specified otherwise. To see the LXPM version supported by your server, go to https:// pubs.lenovo.com/lxpm-overview/...
Page 22 1. Most options can be updated through the Lenovo tools. Some options, such as GPU firmware or Omni- Path firmware require the use of supplier tools. 2. The server UEFI settings for option ROM must be set to Auto or UEFI to update firmware using Lenovo XClarity Administrator, Lenovo XClarity Essentials, or Lenovo XClarity Controller.
Page 23: Chapter 2. Server Components
Figure 2. Front view of primary chassis Table 2. Components on the front view Drive bays 8-11 Power button/LED (green) PCIe slot S1 USB 2.0 connector with Lenovo XClarity Controller management PCIe slot S2 VGA connector Sideband card (Secondary chassis)
Page 24 Press this button to force a nonmaskable interrupt to the processor. You might have to use a pen or the end of a straightened paper clip to press the button. You can also use it to force a blue-screen memory dump. Use this button only when you are directed to do so by Lenovo Support. Pull-out information tab This tab contains network information such as MAC address and XCC network access label.
Page 25 ID button, the state of the system ID LED changes. The LED can be changed to on, blinking, or off. You can also use the Lenovo XClarity Controller or a remote management program to change the state of the system ID LED to assist in visually locating the server among other servers.
Page 26 In this mode, the USB port is always solely connected to Lenovo XClarity Controller. • Shared mode: owned by BMC In this mode, connection to the USB port is shared by the server and Lenovo XClarity Controller, while the port is switched to Lenovo XClarity Controller.
Page 27: Rear View
Rear view The rear of the server provides access to several components, including the power supplies, PCIe adapters, serial port, and Ethernet port. Note: Depending on the configuration, your server might be slightly different from the image. Figure 5. Rear view Table 3.
Page 28: Top View
I/O board and interposer assembly, and lower processor board (MB) air baffle removed. Notes: • Depending on the configuration, your server might be slightly different from the image. • The primary chassis is shown below as an example, the secondary chassis is similar. ThinkSystem SR950 V3 User Guide...
Page 29: Upper Processor Board (Cpu Bd) Connectors
Figure 8. Server top view Table 4. Component identification (Top view) Power interposer boards (PIB) CMOS battery Fan and fan cage assembly Support bracket CPU7/CPU6 Sideband card Memory modules A1-T2 (Upper processor board (CPU Serial port assembly (Primary chassis only) BD)) System I/O board and interposer assembly (Primary Front operator panel and front operator panel cage...
Page 30: Upper Processor Board (Cpu Bd) Switches
1. Before you change any switch settings or move any jumpers, turn off the server; then, disconnect all power cords and external cables. Review the following information: • https://pubs.lenovo.com/safety_documentation/ • “Installation Guidelines” on page 41 • “Handling static-sensitive devices” on page 44 • “Power off the server” on page 50 ThinkSystem SR950 V3 User Guide...
Page 31 2. Any upper processor board (CPU BD) switch or jumper block that is not shown in the illustrations in this document are reserved. Note: If there is a clear protective sticker on the top of the switch blocks, you must remove and discard it to access the switches.
Page 32: System I/O Board And Interposer Assembly Connectors
Firmware and RoT security module connector External diagnostics handset connector MicroSD socket SCM connector Serial port module connector Rear OCP connector Second management Ethernet connector Rear Ethernet card connector Internal USB connector PHY 2 connector Front operator panel connector ThinkSystem SR950 V3 User Guide...
Page 33: System I/O Board And Interposer Assembly Switches
Important: 1. Before you change any switch settings or move any jumpers, turn off the server; then, disconnect all power cords and external cables. Review the following information: • https://pubs.lenovo.com/safety_documentation/ • “Installation Guidelines” on page 41 • “Handling static-sensitive devices” on page 44 •...
Page 34: Lower Processor Board (Mb) Connectors
Front intrusion connector PE4AB_R connector Internal sideband connector External sideband slot PE4CD_R connector PDB_CONN2 connector PCIe slot P2/S2 UPI3_R connector PCIe slot P1/S1 Top cover intrusion connector Rear OCP connector UPI0_R connector M.2 slot 1 ThinkSystem SR950 V3 User Guide...
Page 35: Lower Processor Board (Mb) Switches
Important: 1. Before you change any switch settings or move any jumpers, turn off the server; then, disconnect all power cords and external cables. Review the following information: • https://pubs.lenovo.com/safety_documentation/ • “Installation Guidelines” on page 41 • “Handling static-sensitive devices” on page 44 •...
Page 36 Table 11. Lower processor board (MB) J201 switch block description Jumper Name Location Position Function J201A Reserved 1-2 (Default) Reserved Reserved J201B Reserved 1-2 (Default) Reserved Reserved Reserved Reserved J201C 1-2 (Default) Reserved J201D Reserved Reserved 1-2 (Default) ThinkSystem SR950 V3 User Guide...
Page 37 Table 11. Lower processor board (MB) J201 switch block description (continued) Jumper Name Location Position Function Reserved J201E CMOS clear 1-2 (Default) Resets the RTC. A momentary toggle is all that is required. To avoid excessive CMOS battery drain, do not leave this switch in the On position.
Page 38: System Leds And Diagnostics Display
Reserved Reserved 2-3 (Default) Reserved J191E Reserved 1-2 (Default) Reserved Reserved J191F Reserved 1-2 (Default) Reserved Reserved System LEDs and diagnostics display See the following section for information on available system LEDs and diagnostics display. ThinkSystem SR950 V3 User Guide...
Page 39 For more information, refer to “Troubleshooting by system LEDs and diagnostics display” on page 285. Chapter 2 Server components...
Page 40 ThinkSystem SR950 V3 User Guide...
Page 41: Chapter 3. Parts List
2. Click Parts. 3. Enter the serial number to view a listing of parts for your server. It is highly recommended that you check the power summary data for your server using Lenovo Capacity Planner before purchasing any new parts.
Page 42 Tier 1 CRU at your request with no service agreement, you will be charged for the installation. • T2: Tier 2 customer replaceable unit (CRU). You may install a Tier 2 CRU yourself or request Lenovo to install it, at no additional charge, under the type of warranty service that is designated for your server.
Page 43: Power Cords
Several power cords are available, depending on the country and region where the server is installed. To view the power cords that are available for the server: 1. Go to: http://dcsc.lenovo.com/#/ 2. Click Preconfigured Model or Configure to order. 3. Enter the machine type and model for your server to display the configurator page.
Page 44 ThinkSystem SR950 V3 User Guide...
Page 45: Chapter 4. Unboxing And Setup
They might be required to receive warranty service. Identify the server and access the Lenovo XClarity Controller This section contains instruction on how to identify your server and where to find the Lenovo XClarity Controller access information.
Page 46 Lenovo XClarity Controller network access label In addition, the Lenovo XClarity Controller network access label is attached to the pull-out information tab located near the bottom right on the front of the primary chassis, with MAC address accessible with a pull.
Page 47 Figure 17. Lenovo XClarity Controller network access label on the pull-out information tab Service Label and QR code In addition, the system Service Label located on the inside surface of the front top cover, provides a quick response (QR) code for mobile access to service information. You can scan the QR code with a mobile device using a QR code reader application and get quick access to the Service Information web page.
Page 48: Server Setup Checklist
• You can press the power button. • The server can restart automatically after a power interruption. • The server can respond to remote power-on requests sent to the Lenovo XClarity Controller. Note: You can access the management processor interface to configure the system without powering on the server.
Page 49 Chapter 7 “System configuration” on page 273. 1. Set the network connection for the Lenovo XClarity Controller to the management network. 2. Update the firmware for the server, if necessary. 3. Configure the firmware for the server. The following information is available for RAID configuration: •...
Page 50 ThinkSystem SR950 V3 User Guide...
Page 51: Chapter 5. Hardware Replacement Procedures
• Do not attempt to lift an object that might be too heavy for you. If you have to lift a heavy object, read the following precautions carefully: – Make sure that you can stand steadily without slipping. – Distribute the weight of the object equally between your feet. © Copyright Lenovo 2023, 2024...
Page 52: Safety Inspection Checklist
1 & IEC 60950-1, the standard for Safety of Electronic Equipment within the Field of Audio/Video, Information Technology and Communication Technology. Lenovo assumes you are qualified in the servicing of equipment and trained in recognizing hazards energy levels in products. Access to the equipment is by the use of a tool, lock and key, or other means of security, and is controlled by the authority responsible for the location.
Page 53: System Reliability Guidelines
Click Power ➙ Power Cables to see all line cords. • Make sure that the insulation is not frayed or worn. 3. Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo alterations.
Page 54: Handling Static-Sensitive Devices
Supported memory types For information on the types of memory module supported by this server, see “Memory” section in “Technical specifications” on page Information about optimizing memory performance and configuring memory is available at the Lenovo Press website: https://lenovopress.lenovo.com/servers/options/memory In addition, you can take advantage of a memory configurator, which is available at the following site:...
Page 55 Specific information about the required installation order of memory modules in your server based on the system configuration and memory mode that you are implementing is shown below. Memory modules and processors layout Figure 19. Memory modules and processors layout (upper processor board (CPU BD))
Page 56 Memory module installation guideline • A label on each DIMM identifies the DIMM type. This information is in the format xxxxx nRxxx PC4- xxxxx-xx-xx-xxx. Where n indicates if the DIMM is single-rank (n=1) or dual-rank (n=2). ThinkSystem SR950 V3 User Guide...
Page 57: Independent Memory Mode Installation Order
• At least one DIMM is required for each processor. Install at least eight DIMMs per processor for good performance. • When you replace a DIMM, the server provides automatic DIMM enablement capability without requiring you to use the Setup Utility to enable the new DIMM manually. Independent memory mode installation order Independent memory mode provides the highest level of memory performance, but lacks failover protection.
Page 58 128 DIMMs Note: DIMM configurations that support the Sub NUMA Clustering (SNC) feature, which can be enabled via UEFI. SNC is not supported if DIMM population does not follow the sequence indicated by the table above. ThinkSystem SR950 V3 User Guide...
Page 59: Memory Mirroring Mode Installation Order
Memory mirroring mode installation order Memory-mirroring mode provides full memory redundancy while reducing the total system memory capacity in half. Memory channels are grouped in pairs with each channel receiving the same data. If a failure occurs, the memory controller switches from the DIMMs on the primary channel to the DIMMs on the backup channel.
Page 60: Power Off The Server
Power off the server The server remains in a standby state when it is connected to a power source, allowing the Lenovo XClarity Controller to respond to remote power-on requests. To remove all power from the server (power status LED off), first disconnect all the power cords from the primary chassis, then disconnect the power cords from the secondary chassis.
Page 61 R006 S037 CAUTION: CAUTION: Do not place any object on top of a rack-mounted The weight of this part or unit is more than 55 kg device unless that rack-mounted device is intended (121.2 lb). It takes specially trained persons, a lifting for use as a shelf.
Page 62 Otherwise, lift the server with three people or a lifting device. CAUTION: Make sure to lift the server by holding the lift points. Lift point Step 5. Disconnect the sideband cables from the primary and secondary chassis. ThinkSystem SR950 V3 User Guide...
Page 63 Figure 21. Disconnecting sideband cables Sideband cable 1 Sideband cable 2 Step 6. Open the UPI cover on the primary chassis. Figure 22. Opening UPI cover Loosen the thumbscrew on the UPI cover. Use a screwdriver if needed. UPI cover will open automatically. Step 7.
Page 64 Step 10. Remove the server along with the inner rails from rack Install the front lift handle. ThinkSystem SR950 V3 User Guide...
Page 65 Slide the server out until it stops. Pinch both flaps on the side of the handles. Align the handles with the 6 posts on the sides of the server; then slide the handles up to secure them to the chassis. CAUTION: Make sure to install both front lift handles first before proceeding sliding out.
Page 66 CAUTION: Make sure to install both rear lift handles first before proceeding sliding out. Lift the second lock latches up and remove the server completely from the rack; then place it on a table. ThinkSystem SR950 V3 User Guide...
Page 67 Step 11. Remove the lift handles. Chapter 5 Hardware replacement procedures...
Page 68 Align the handles with the 6 posts on the sides of the server; then, slide the handles down to remove them. Note: Make sure to remove all 4 lift handles. Step 12. Loosen and remove an M4 screw in the corresponding hole on both inner rails as shown. ThinkSystem SR950 V3 User Guide...
Page 69: Install The Server To Rails
Step 13. Remove the inner rail from the server. Press and hold on the release tab; then, simultaneously, slide the inner rail backwards until the T-pins on the server disengaged from the inner rail. Remove the inner rail from the server. Step 14.
Page 70 Otherwise, lift the server with three people or a lifting device. CAUTION: Make sure to lift the server by holding the lift points. Lift point Step 2. Remove the inner rails from the intermediate rails. ThinkSystem SR950 V3 User Guide...
Page 71 Pull the inner rails all the way out until they stop. Lift the lock latches, and pull the inner rails to disengage them from the intermediate rails. Attention: There are two pairs of lock latches on the rails. Lift the second pair of latches to proceed to slide the inner rails out.
Page 72 Step 4. Insert and tighten an M4 screw to secure the inner rail as shown. Step 5. Repeat the previous two steps on the other rail. Step 6. Attach the lift handle. ThinkSystem SR950 V3 User Guide...
Page 73 Pinch both flaps on the side of the handles. Align the handles with the 6 posts on the sides of the server; then slide the handles up to secure them to the chassis. Notes: • Make sure all 6 posts are secured. •...
Page 74 Align both rear ends of the inner rails with the openings in the intermediate rails, and make sure the two pairs of rails mate correctly. Then, carefully slide the server into the rack until the rails snap into place. Remove the rear lift handles. ThinkSystem SR950 V3 User Guide...
Page 75 Pinch both flaps on the side of the handles. Align the handles with the 6 posts on the sides of the server; then, slide the handles down to remove them. Note: Make sure to remove both rear lift handles before proceeding sliding in. Lift the first pair of lock latches to proceed to slide the server in until the rails snap into place.
Page 76 Attention: Slide the server all the way out and all the way back in to make sure the rails are working smoothly. Step 8. Connect the external UPI cables to the primary chassis. Make sure the cables match the number and pattern shown on the UPI label. ThinkSystem SR950 V3 User Guide...
Page 77 Figure 24. Connecting external UPI cables External UPI cable 1 External UPI cable 5 External UPI cable 2 External UPI cable 6 External UPI cable 3 External UPI cable 7 External UPI cable 4 External UPI cable 8 Step 9. Close the UPI cover on the primary chassis.
Page 78 Note: Use either flat-head, hex socket, or Phillips driver for the following instruction. Insert and tighten an M5 screw along with a washer to the hole below each hook latch. Tighten the thumbscrews. Use a screwdriver if needed. ThinkSystem SR950 V3 User Guide...
Page 79: Remove The Rails From The Rack
Step 15. If you have removed a security bezel, reinstall it. See “Install the security bezel” on page 201. Step 16. Reconnect the power cords to the secondary chassis, then reconnect the power cords to the primary chassis. Note: It is recommended to connect PSU P1-P3/S1-S3 to a PDU different from PSU P4-P6/S4-S6 in case of PDU failure.
Page 80 Attention: There are two pairs of lock latches on the rails. Lift the second pair up again. Push the inner rail in to fully retracted state. Repeat the previous steps to the other rail. Step 3. Remove the rails from the rack. ThinkSystem SR950 V3 User Guide...
Page 81: Air Baffle Replacement
Front Rear Rotate and hold the latch on the front end. Push the rail forward and remove the rail from the front mounting flanges. Pull the hook latch up to disengage the rear end of the rail. Remove the rail from the rear mounting flanges. After you finish 1.
Page 82 Attention: For proper cooling and airflow, reinstall the upper processor board (CPU BD) and lower processor board (MB) air baffles before you turn on the server. Operating the server with the air baffle removed might damage server components. ThinkSystem SR950 V3 User Guide...
Page 83: Install The Upper Processor Board (Cpu Bd) Air Baffle
Figure 28. Removing upper processor board (CPU BD) air baffle After you finish 1. Install a replacement unit. See “Install the upper processor board (CPU BD) air baffle” on page 2. If you are instructed to return the component or optional device, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.
Page 84 Slightly press the upper processor board (CPU BD) air baffle down until it is securely seated. Step 3. Reconnect all the cables that were removed earlier and route them through the upper processor board (CPU BD) air baffle. Step 4. Connect the cables to the M.2 boot adapter. ThinkSystem SR950 V3 User Guide...
Page 85: Remove The Lower Processor Board (Mb) Air Baffle
Figure 30. Connecting cable to M.2 boot adapter Tilt the connector at an angle of 20 degrees or lower, and insert it until its bottom surface reaches the ramp. Press the connector down flat. Tighten the screw on the signal cable. Connect the power cable.
Page 86: Install The Lower Processor Board (Mb) Air Baffle
Demo video Watch the procedure on YouTube Install the lower processor board (MB) air baffle Follow the instructions in this section to install the lower processor board (MB) air baffle. ThinkSystem SR950 V3 User Guide...
Page 87 About this task Attention: • Read “Installation Guidelines” on page 41 “Safety inspection checklist” on page 42 to ensure that you work safely. • Power off the server and peripheral devices, disconnect the power cords from the primary chassis, then disconnect the power cords from the secondary chassis.
Page 88: Cmos Battery (Cr2032) Replacement
The following notes describe information that you must consider when replacing the battery: • Lenovo has designed this product with your safety in mind. The lithium CMOS battery must be handled correctly to avoid possible danger. If you replace the CMOS battery, you must adhere to local ordinances or regulations for battery disposal.
Page 89 replace it only with the same module type made by the same manufacturer. The battery contains lithium and can explode if not properly used, handled, or disposed of. Do not: • Throw or immerse into water • Heat to more than 100°C (212°F) •...
Page 90 After you finish 1. Install a replacement unit. See “Install the CMOS battery (CR2032)” on page 2. Dispose of the CMOS battery as required by local ordinances or regulations. Demo video Watch the procedure on YouTube ThinkSystem SR950 V3 User Guide...
Page 91: Install The Cmos Battery (Cr2032)
S004 CAUTION: When replacing the lithium battery, use only Lenovo specified part number or an equivalent type of battery recommended by the manufacturer. If your system has a module containing a lithium battery, replace it only with the same module type made by the same manufacturer. The battery contains lithium and can explode if not properly used, handled, or disposed of.
Page 92 Step 1. Locate the CMOS battery on the lower processor board (MB). Note: The CMOS battery is only used on the primary chassis lower processor board (MB). Figure 34. CMOS battery location CMOS battery location ThinkSystem SR950 V3 User Guide...
Page 93: Drive Replacement
Step 2. Touch the static-protective package that contains the new part to any unpainted surface on the outside of the server; then, take the new part out of the package and place it on a static-protective surface. Step 3. Place the CMOS battery on top of the socket with the positive (+) symbol facing up, and press the battery into the seat until it clicks in place.
Page 94 Figure 37. E3.S drive bay numbering Procedure Step 1. Open the drive door. Figure 38. Opening the drive door Loosen the thumbscrew. Use a screwdriver if needed. Grasp the thumbscrew and open the drive door. Step 2. Remove the drive. ThinkSystem SR950 V3 User Guide...
Page 95 Figure 39. Removing a 2.5-inch drive Figure 40. Removing a E3.S drive Note: The E3.S drive tray handle opens in different directions depending on the E3.S drive location. Slide the release latch to open the tray handle. The tray handle opens automatically. Grasp and pull the handle to remove the drive from the drive bay.
Page 96: Install A Hot-Swap Drive
Firmware and driver download: You might need to update the firmware or driver after replacing a component. • Go to https://datacentersupport.lenovo.com/products/servers/thinksystem/sr950v3/7dc4/downloads/driver- to see the latest firmware and driver updates for your server. list/ • Go to “Update the firmware” on page 275 for more information on firmware updating tools. ThinkSystem SR950 V3 User Guide...
Page 97 Procedure Step 1. Touch the static-protective package that contains the new part to any unpainted surface on the outside of the server; then, take the new part out of the package and place it on a static-protective surface. Step 2. If a drive filler has been installed in the drive bay, remove it.
Page 98: Drive Backplane Replacement
Watch the procedure on YouTube Drive backplane replacement Follow the instructions in this section to install or remove a drive backplane. Remove a drive backplane Follow the instructions in this section to remove a drive backplane. About this task ThinkSystem SR950 V3 User Guide...
Page 99 Attention: • Read “Installation Guidelines” on page 41 “Safety inspection checklist” on page 42 to ensure that you work safely. • Power off the server and peripheral devices, disconnect the power cords from the primary chassis, then disconnect the power cords from the secondary chassis. See “Power off the server”...
Page 100: Install A Drive Backplane
• If the server is installed in a rack, remove the server from the rack. See “Remove the server from rails” on page Firmware and driver download: You might need to update the firmware or driver after replacing a component. ThinkSystem SR950 V3 User Guide...
Page 101: Drive Cage Replacement
• Go to https://datacentersupport.lenovo.com/products/servers/thinksystem/sr950v3/7dc4/downloads/driver- to see the latest firmware and driver updates for your server. list/ • Go to “Update the firmware” on page 275 for more information on firmware updating tools. Procedure Step 1. Install the drive backplane. Figure 48. Installing 2.5-inch drive backplane Hook the drive backplane onto the drive cage.
Page 102 Remove the drive backplane or E3.S cable assembly. See “Remove a drive backplane” on page 88 “Remove an E3.S cable assembly” on page Step 2. Remove the drive cage. Figure 49. Removing 2.5-inch drive cage ThinkSystem SR950 V3 User Guide...
Page 103: Install A Drive Cage
Figure 50. Removing E3.S drive cage Remove the two screws. Slide the drive cage away from the chassis and remove it. After you finish 1. Install a replacement unit. See “Install a drive cage” on page 2. If you are instructed to return the component or optional device, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.
Page 104 • If the server is installed in a rack, remove the server from the rack. See “Remove the server from rails” on page Procedure Step 1. Install the drive cage. Figure 51. Installing 2.5-inch drive cage Figure 52. Installing E3.S drive cage ThinkSystem SR950 V3 User Guide...
Page 105: E3.S Cable Assembly Replacement
Slide the drive cage into the chassis. Secure the drive cage with two screws. After you finish 1. Reinstall the drive backplane or E3.S cable assembly. See “Install a drive backplane” on page 90 “Install an E3.S cable assembly” on page 2.
Page 106: Install An E3.S Cable Assembly
• If the server is installed in a rack, remove the server from the rack. See “Remove the server from rails” on page Procedure Step 1. Install the E3.S cable assembly. ThinkSystem SR950 V3 User Guide...
Page 107: Eia Flange Replacement
Figure 54. Installing E3.S cable assembly Hook the E3.S cable assembly onto the drive cage. Tighten the thumbscrew. Use a screwdriver if needed. After you finish 1. Connect the power and signal cables to the riser card and upper processor board (CPU BD). See “E3.S cable assembly cable routing”...
Page 108: Install An Eia Flange
• Power off the server and peripheral devices, disconnect the power cords from the primary chassis, then disconnect the power cords from the secondary chassis. See “Power off the server” on page ThinkSystem SR950 V3 User Guide...
Page 109: Ethernet Port Assembly Replacement
• Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static- sensitive components in their static-protective packages until installation, and handling these devices with an electrostatic-discharge wrist strap or other grounding system. •...
Page 110 Disconnect the cable from the Ethernet port assembly and interposer board. See “Ethernet port assembly cable routing” on page 267. Step 4. If necessary, remove the two screws and separate the Ethernet port card from the bracket. ThinkSystem SR950 V3 User Guide...
Page 111: Install The Ethernet Port Assembly
Firmware and driver download: You might need to update the firmware or driver after replacing a component. • Go to https://datacentersupport.lenovo.com/products/servers/thinksystem/sr950v3/7dc4/downloads/driver- list/ to see the latest firmware and driver updates for your server. • Go to “Update the firmware”...
Page 112 “Install the upper processor board (CPU BD)” on page “Install the upper processor board (CPU BD) air baffle” on page 2. Reinstall the rear top cover. See “Install the rear top cover” on page 236. ThinkSystem SR950 V3 User Guide...
Page 113: Fan And Fan Cage Replacement
3. Reinstall the front top cover. See “Install the front top cover” on page 239. 4. Complete the parts replacement. See “Complete the parts replacement” on page 256. Demo video Watch the procedure on YouTube Fan and fan cage replacement Follow instructions in this section to remove or install the fans and the fan cage assembly.
Page 114: Remove The Fan Cage
Demo video Watch the procedure on YouTube Remove the fan cage Follow the instructions in this section to remove the fan cage. About this task ThinkSystem SR950 V3 User Guide...
Page 115 S002 CAUTION: The power-control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.
Page 116: Install The Fan Cage
The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source. S017 ThinkSystem SR950 V3 User Guide...
Page 117 CAUTION: Hazardous moving fan blades nearby. Keep fingers and other body parts away. Attention: • Read “Installation Guidelines” on page 41 “Safety inspection checklist” on page 42 to ensure that you work safely. • Power off the server and peripheral devices, disconnect the power cords from the primary chassis, then disconnect the power cords from the secondary chassis.
Page 118: Install A Fan Module
• If the server is installed in a rack, remove the server from the rack. See “Remove the server from rails” on page ThinkSystem SR950 V3 User Guide...
Page 119: Flash Power Module Replacement
Procedure Step 1. Align the fan module over the fan slot in the fan cage assembly, and insert the fan module into the fan cage assembly until it clicks into place. Figure 64. Installing a fan module After you finish 1.
Page 120 Locate the flash power module on the upper processor board (CPU BD) air baffle. Figure 65. Flash power module location Flash power module location Step 3. Disconnect the cable of the RAID flash power module from the extension cable. ThinkSystem SR950 V3 User Guide...
Page 121: Install A Flash Power Module
Figure 66. Disconnecting cable from flash power module Step 4. Remove the flash power module. Figure 67. Flash power module removal Gently pivot the retaining clip as shown. Lift the flash power module up and remove it from the holder. After you finish 1.
Page 122 Press the flash power module down on the other side until it snaps into place. Step 3. Connect the cable of the RAID flash power module to the extension cable. ThinkSystem SR950 V3 User Guide...
Page 123: Front Operator Panel Replacement
Figure 69. Connecting cable to flash power module Step 4. Connect the flash power module to a RAID adapter with the extension cable. After you finish 1. Reinstall the front top cover. See “Install the front top cover” on page 239.
Page 124 Press and hold on the two release tabs on the top of the front operator panel cage. Push the front operator panel assembly outwards from the inside of the chassis to remove it. Step 3. If necessary, remove two screws and remove the front operator panel cage. ThinkSystem SR950 V3 User Guide...
Page 125: Install The Front Operator Panel
Figure 71. Removing front operator panel cage Step 4. If necessary, remove two screws and remove the front operator panel bracket. Figure 72. Removing front operator panel bracket After you finish 1. Install a replacement unit. See “Install the front operator panel” on page 115.
Page 126 If necessary, install the front operator panel bracket onto the chassis and secure it with two screws. Figure 73. Installing front operator panel bracket Step 2. If necessary, install the front operator panel cage onto the lower processor board (MB) and secure it with two screws. ThinkSystem SR950 V3 User Guide...
Page 127 Figure 74. Installing front operator panel cage Step 3. Align and install the front operator panel into the slot on the front of the chassis. Figure 75. Installing front operator panel After you finish 1. For primary chassis only, reinstall the system I/O board and interposer assembly. See “Install the system I/O board and interposer board”...
Page 128: Intrusion Switch Replacement
“Remove the server from rails” on page Procedure Step 1. Remove the front top cover. See “Remove the front top cover” on page 233. Step 2. Disconnect the intrusion switch cable from the lower processor board (MB). ThinkSystem SR950 V3 User Guide...
Page 129: Install The Top Cover Intrusion Switch
Figure 76. Disconnecting intrusion switch Step 3. Remove the top cover intrusion switch. Figure 77. Removing top cover intrusion switch Loosen the captive screw. Remove the intrusion switch cover. Remove the intrusion switch from the chassis. After you finish 1. Install a replacement unit. See “Install the top cover intrusion switch”...
Page 130 Align the intrusion switch with the slot in the chassis and push it in. Align and install the intrusion switch cover. Tighten the captive screw to secure the intrusion switch cover. Step 2. Connect the intrusion switch cable to the lower processor board (MB). ThinkSystem SR950 V3 User Guide...
Page 131: Remove The Front Intrusion Switch
Figure 79. Connecting intrusion switch After you finish 1. Reinstall the front top cover. See “Install the front top cover” on page 239. 2. Complete the parts replacement. See “Complete the parts replacement” on page 256. Demo video Watch the procedure on YouTube Remove the front intrusion switch Follow the instructions in this section to remove the front intrusion switch.
Page 132 Disconnect the intrusion switch. Figure 80. Disconnecting intrusion switch Open the cable clip and unhook the intrusion switch cable. Disconnect the intrusion switch cable from the lower processor board (MB). Step 3. Remove the front intrusion switch assembly. ThinkSystem SR950 V3 User Guide...
Page 133: Install The Front Intrusion Switch
Figure 81. Removing front intrusion switch assembly Loosen the captive screw. Slide the intrusion switch assembly away from the front of the chassis and remove it. Step 4. Grasp the switch, and remove it from the bracket. Figure 82. Removing intrusion switch After you finish 1.
Page 134 Install the front intrusion switch assembly. Figure 84. Installing front intrusion switch assembly Align and install the intrusion switch assembly into the chassis. Tighten the captive screw to secure the intrusion switch assembly. Step 3. Connect the intrusion switch. ThinkSystem SR950 V3 User Guide...
Page 135: Lower Processor Board (Mb) Replacement (Trained Technician Only)
Follow the instructions in this section to remove and install the lower processor board (MB). Important: This task must be operated by trained technicians that are certified by Lenovo Service. Do not attempt to remove or install the part without proper training and qualification.
Page 136 Important: • This task must be operated by trained technicians that are certified by Lenovo Service. Do not attempt to remove or install the part without proper training and qualification. • When removing the memory modules, label the slot number on each memory module, remove all the memory modules from the lower processor board (MB), and set them aside on a static-protective surface for reinstallation.
Page 137 Remove the lower processor board (MB) air baffle. See “Remove the lower processor board (MB) air baffle” on page For primary chassis only, remove the front operator panel and front operator panel cage. See “Remove the front operator panel” on page 113.
Page 138 For primary chassis only, disconnect the SCM cable. Figure 88. Disconnecting SCM cable Loosen the two thumbscrews on the SCM bracket. Use a screwdriver if needed. Remove the SCM bracket. Disconnect the SCM cable from the lower processor board (MB). ThinkSystem SR950 V3 User Guide...
Page 139 Step 5. Make a list of all the cables connected to the lower processor board (MB); then, disconnect all the cables. See Chapter 6 “Internal cable routing” on page 259. Step 6. Remove the lower processor board (MB). Figure 89. Lower processor board (MB) removal Note: This lower processor board (MB) handle only serves the purpose of removing the lower processor board (MB).
Page 140: Install The Lower Processor Board (Mb)
Follow instructions in this section to install the lower processor board (MB). About this task Important: This task must be operated by trained technicians that are certified by Lenovo Service. Do not attempt to remove or install the part without proper training and qualification.
Page 141 Figure 90. Lower processor board (MB) installation Grasp the thumbscrew and lower processor board (MB) handle; then, lower the lower processor board (MB) into the chassis and slide it towards the front of the chassis. Tighten the thumbscrew to secure the lower processor board (MB). Use a screwdriver if needed.
Page 142 SCM bracket onto the SCM cable. Tighten the two thumbscrews to secure the SCM cable. Use a screwdriver if needed. Step 5. Connect the internal UPI cables to the lower processor board (MB). Figure 93. Connecting internal UPI cables ThinkSystem SR950 V3 User Guide...
Page 143 Step 6. Connect the UPI module cables. Figure 94. Connecting UPI module cables Connect the UPI module cables to the lower processor board (MB). Route the UPI module cables through the cable clips and close them. Step 7. Reconnect all the cables to the lower processor board (MB). See Chapter 6 “Internal cable routing”...
Page 144: M.2 Drive And M.2 Boot Adapter Replacement
• If the server is installed in a rack, remove the server from the rack. See “Remove the server from rails” on page Depending on your configuration, follow the corresponding procedures below for proper removal procedure. ThinkSystem SR950 V3 User Guide...
Page 145: Step 1. Make Preparation For The Task
• “Remove M.2 drive from M.2 boot adapter” on page 135 • “Remove M.2 drive from lower processor board (MB)” on page 135 Remove M.2 drive from M.2 boot adapter Procedure Step 1. Remove the front top cover. See “Remove the front top cover” on page 233.
Page 146: Remove The M.2 Boot Adapter
Procedure Step 1. Make preparation for the task. Remove the front top cover. See “Remove the front top cover” on page 233. ThinkSystem SR950 V3 User Guide...
Page 147 Remove all the M.2 drives from the M.2 boot adapter. See “Remove an M.2 drive” on page 134. Step 2. Disconnect the cables from the M.2 boot adapter. Figure 97. Disconnecting cable from M.2 boot adapter Loosen the screw on the signal cable. Tilt the connector and remove it.
Page 148: Install The M.2 Boot Adapter
Follow the instructions in this section to install the M.2 boot adapter. About this task Attention: • Read “Installation Guidelines” on page 41 “Safety inspection checklist” on page 42 to ensure that you work safely. ThinkSystem SR950 V3 User Guide...
Page 149 Firmware and driver download: You might need to update the firmware or driver after replacing a component. • Go to https://datacentersupport.lenovo.com/products/servers/thinksystem/sr950v3/7dc4/downloads/driver- list/ to see the latest firmware and driver updates for your server. • Go to “Update the firmware”...
Page 150: Adjust The M.2 Retainer
Depending on your configuration, follow the corresponding procedures below for proper removal procedure. • “Adjust M.2 retainer on M.2 boot adapter” on page 141 • “Adjust M.2 retainer on lower processor board (MB)” on page 141 ThinkSystem SR950 V3 User Guide...
Page 151 Adjust M.2 retainer on M.2 boot adapter Procedure Step 1. Adjust the M.2 retainer. Figure 101. M.2 retainer adjustment Press both sides of the retainer. Move the retainer forward until it is in the large opening of the keyhole. Take the retainer out of the keyhole; then, insert the retainer into the correct keyhole. Press both sides of the retainer.
Page 152 “Install an M.2 drive” on page 143. 2. If you are instructed to return the component or optional device, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you. Demo video ThinkSystem SR950 V3 User Guide...
Page 153: Install An M.2 Drive
Firmware and driver download: You might need to update the firmware or driver after replacing a component. • Go to https://datacentersupport.lenovo.com/products/servers/thinksystem/sr950v3/7dc4/downloads/driver- to see the latest firmware and driver updates for your server. list/ • Go to “Update the firmware” on page 275 for more information on firmware updating tools.
Page 154 Insert the M.2 drive into the slot at an angle of approximately 30 degrees. Pivot the M.2 drive down until the notch at the end of the M.2 drive catches on the lip of the retainer. ThinkSystem SR950 V3 User Guide...
Page 155 Slide the retaining clip forward to secure the M.2 drive to the M.2 boot adapter. Install M.2 drive to lower processor board (MB) Procedure Step 1. Touch the static-protective package that contains the new part to any unpainted surface on the outside of the server;...
Page 156: Memory Module Replacement
Watch the procedure on YouTube Memory module replacement Use the following procedures to remove and install a memory module. Remove a memory module Use this information to remove a memory module. About this task S002 CAUTION: ThinkSystem SR950 V3 User Guide...
Page 157: Remove The Upper Processor Board (Cpu Bd) Air Baffle. See "Remove The Upper Processor Board (Cpu Bd) Air Baffle" On Page
The power-control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.
Page 158: Install A Memory Module
Demo video Watch the procedure on YouTube Install a memory module Follow the instructions in this section to install a memory module. About this task ThinkSystem SR950 V3 User Guide...
Page 159 S002 CAUTION: The power-control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.
Page 160 In this case, open the retaining clips, remove the memory module, and then reinsert it. Figure 109. Memory module installation Gently open the retaining clip on each end of the memory module slot. ThinkSystem SR950 V3 User Guide...
Page 161: Microsd Card Replacement
Align the memory module with the slot, and gently place the memory module on the slot with both hands. Firmly press both ends of the memory module straight down into the slot until the retaining clips snap into the locked position. After you finish 1.
Page 162: Install The Microsd Card
Demo video Watch the procedure on YouTube Install the MicroSD card Follow the instructions in this section to install the MicroSD card. About this task Attention: ThinkSystem SR950 V3 User Guide...
Page 163 • Read “Installation Guidelines” on page 41 “Safety inspection checklist” on page 42 to ensure that you work safely. • Power off the server and peripheral devices, disconnect the power cords from the primary chassis, then disconnect the power cords from the secondary chassis. See “Power off the server”...
Page 164: Ocp Module And Cage Replacement
• Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static- sensitive components in their static-protective packages until installation, and handling these devices with an electrostatic-discharge wrist strap or other grounding system. Procedure Step 1. Remove the OCP module. ThinkSystem SR950 V3 User Guide...
Page 165: Remove The Ocp Cage
Figure 112. Removing OCP module Loosen the thumbscrew that secures the OCP module. Use a screwdriver if necessary. Use a screwdriver if needed. Grasp the handle, and slide the OCP module out. After you finish 1. Install a replacement unit or a filler. See “Install the OCP module”...
Page 166 Loosen the thumbscrew on the OCP module cage. Use a screwdriver if needed. Remove the screw that secures the OCP module cage. Grasp the OCP module cage and carefully pull it out of the chassis. Step 3. If necessary, remove two screws to remove the OCP cable. ThinkSystem SR950 V3 User Guide...
Page 167: Install The Ocp Cage
Figure 114. Removing OCP cable Step 4. If necessary, disconnect the OCP cables from the lower processor board (MB) and interposer board. See “OCP cable routing” on page 268. After you finish 1. Install a replacement unit. See “Install the OCP cage” on page 157.
Page 168 “OCP cable routing” on page 268. Step 2. If necessary, install the OCP cable and secure it to the OCP module cage with two screws. Figure 115. Installing OCP cable Step 3. Install the OCP module cage. ThinkSystem SR950 V3 User Guide...
Page 169: Install The Ocp Module
Figure 116. Installing OCP module cage Align and install the OCP module cage into the chassis. Install the screw to secure the OCP module cage. Tighten the thumbscrew on the OCP module cage. Use a screwdriver if needed. After you finish 1.
Page 170 Note: Ensure that the module is fully seated and the thumbscrew is securely tightened. Otherwise, the OCP module will not get full connection and may not function. Figure 117. Installing OCP module Slide the OCP module into the slot until it is fully seated. ThinkSystem SR950 V3 User Guide...
Page 171: Pcie Adapter Replacement
Notes: • For a list of the supported PCIe adapters, see https://serverproven.lenovo.com • Ensure that you populate the PCIe adapters in the sequence below: 1. RAID adapters: P1, S1 2. Network adapters: P7, P8, P5, P6, S7, S8, S5, S6, P1, P2, P3, S1, S2, S3 Depending on your configuration, follow the corresponding procedures below for proper removal procedure.
Page 172 Remove the left PCIe filler from the chassis. Figure 118. Removing left PCIe filler Step 3. Record the cable connections first; then, disconnect all cables from the PCIe adapter. Step 4. Remove the PCIe adapter. ThinkSystem SR950 V3 User Guide...
Page 173 Figure 119. Removing PCIe adapter Remove the screw that secures the PCIe adapter. Grasp the PCIe adapter by its edges and carefully pull it out of the PCIe slot. Step 5. If necessary, install the left PCIe filler. Figure 120. Installing left PCIe filler Remove PCIe adapter from rear riser card Note: PCIe slot P8 is shown below as an example, the replacement procedure for the other PCIe slots are similar.
Page 174: Install A Pcie Adapter
Demo video Watch the procedure on YouTube Install a PCIe adapter Follow the instructions in this section to install a PCIe adapter. About this task S002 ThinkSystem SR950 V3 User Guide...
Page 175 Notes: • For a list of the supported PCIe adapters, see https://serverproven.lenovo.com • Ensure that you populate the PCIe adapters in the sequence below: 1. RAID adapters: P1, S1 2. Network adapters: P7, P8, P5, P6, S7, S8, S5, S6, P1, P2, P3, S1, S2, S3 Depending on your configuration, follow the corresponding procedures below for proper installation procedure.
Page 176 Align the PCIe adapter with the connector on the PCIe slot; then, carefully press the PCIe adapter straight into the slot until it is securely seated and its bracket also is secured. Secure the PCIe adapter with a screw. Step 3. Connect all cables to the PCIe adapter. ThinkSystem SR950 V3 User Guide...
Page 177 Step 4. Install the left PCIe filler. Figure 124. Installing left PCIe filler After you finish 1. Reinstall the front top cover. See “Install the front top cover” on page 239. 2. Complete the parts replacement. See “Complete the parts replacement” on page 256.
Page 178: Pcie Riser Card Replacement
Follow the instructions in this section to remove the PCIe riser card. About this task Attention: • Read “Installation Guidelines” on page 41 “Safety inspection checklist” on page 42 to ensure that you work safely. ThinkSystem SR950 V3 User Guide...
Page 179 • Power off the server and peripheral devices, disconnect the power cords from the primary chassis, then disconnect the power cords from the secondary chassis. See “Power off the server” on page • Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static- sensitive components in their static-protective packages until installation, and handling these devices with an electrostatic-discharge wrist strap or other grounding system.
Page 180 Figure 126. Disconnecting power cables Step 3. Disconnect the PCIe riser cables from the PCIe riser card. Figure 127. Disconnecting PCIe riser cables ThinkSystem SR950 V3 User Guide...
Page 181: Install The Pcie Riser Card
Step 4. Remove the four screws that secure the PCIe riser card; then, remove the PCIe riser card from the chassis Figure 128. Removing PCIe riser card Step 5. If necessary, disconnect the PCIe riser cables from the lower processor board (MB) and the power cables from the PDB.
Page 182 Procedure Step 1. If you are installing the PCIe riser card in the left riser card position, align and install the cable guide to the chassis. Figure 129. Installing cable guide ThinkSystem SR950 V3 User Guide...
Page 183 Step 2. If necessary, connect the PCIe riser cables to the lower processor board (MB) and power cables to the PDB. See “Riser card cable routing” on page 269. Step 3. Align the screw holes in the PCIe riser card with the screw holes in the chassis; then, install four screws to secure the PCIe riser card.
Page 184 Figure 131. Connecting PCIe riser cables Step 5. Connect the power cables to the corresponding connectors on the PCIe riser card. Figure 132. Connecting power cables ThinkSystem SR950 V3 User Guide...
Page 185: Power Distribution Board Replacement
Note: Make sure the cables are properly routed through the cable clips and do not make contact with the fans or metal parts of the chassis. After you finish 1. If you replaced the PCIe riser cables, reinstall the upper processor board (CPU BD) and upper processor board (CPU BD) air baffle.
Page 186 Remove the fan cage. See “Remove the fan cage” on page 104. Step 2. Disconnect the power cables from the power distribution board. Figure 133. Disconnecting power distribution board cables Step 3. Disengage the power distribution board. ThinkSystem SR950 V3 User Guide...
Page 187 Figure 134. Disengaging power distribution board Loosen the two thumbscrews. Use a screwdriver if needed. Grasp the thumbscrews and slide the power distribution board towards the rear of the chassis to disengage it from the lower processor board (MB). Step 4. Remove the power distribution board.
Page 188: Install The Power Distribution Board
• Power off the server and peripheral devices, disconnect the power cords from the primary chassis, then disconnect the power cords from the secondary chassis. See “Power off the server” on page ThinkSystem SR950 V3 User Guide...
Page 189 Firmware and driver download: You might need to update the firmware or driver after replacing a component. • Go to https://datacentersupport.lenovo.com/products/servers/thinksystem/sr950v3/7dc4/downloads/driver- list/ to see the latest firmware and driver updates for your server. • Go to “Update the firmware” on page 275 for more information on firmware updating tools.
Page 190 Tighten the two thumbscrews. Use a screwdriver if needed. Step 3. Connect the power cables to the power distribution board. Figure 139. Connecting power distribution board cables After you finish 1. Reinstall the fan cage. See “Install the fan cage” on page 106. ThinkSystem SR950 V3 User Guide...
Page 191: Power Interposer Board Replacement
2. Reinstall both power interposer boards. See “Install the power interposer board” on page 183. 3. Reinstall the front top cover. See “Install the front top cover” on page 239. 4. Reinstall all the power supply units. See “Install a hot-swap power supply unit” on page 186.
Page 192 2. If you are instructed to return the component or optional device, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you. 3. If you plan to recycle the component. a. Remove six screws, and separate the power interposer board from the bracket. ThinkSystem SR950 V3 User Guide...
Page 193: Install The Power Interposer Board
Firmware and driver download: You might need to update the firmware or driver after replacing a component. • Go to https://datacentersupport.lenovo.com/products/servers/thinksystem/sr950v3/7dc4/downloads/driver- to see the latest firmware and driver updates for your server. list/ • Go to “Update the firmware” on page 275 for more information on firmware updating tools.
Page 194: Power Supply Unit Replacement
Follow the instructions in this section to install or remove power supply units. Remove a hot-swap power supply unit Follow the instructions in this section to remove a hot-swap power supply unit. About this task S002 CAUTION: ThinkSystem SR950 V3 User Guide...
Page 195 The power-control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.
Page 196: Install A Hot-Swap Power Supply Unit
The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source. S035 ThinkSystem SR950 V3 User Guide...
Page 197 CAUTION: Never remove the cover on a power supply or any part that has this label attached. Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician.
Page 198: Processor And Heat Sink Replacement (Trained Technician Only)
Follow the instruction in this section to replace an assembled processor and heat sink, known as a processor-heat-sink module (PHM), a processor, or a heat sink. Attention: Before reusing a processor or heat sink, make sure you use Lenovo proven alcohol cleaning pad and thermal grease.
Page 199 Attention: • Read “Installation Guidelines” on page 41 “Safety inspection checklist” on page 42 to ensure that you work safely. • Power off the server and peripheral devices, disconnect the power cords from the primary chassis, then disconnect the power cords from the secondary chassis. See “Power off the server”...
Page 200 1. Remove the front top cover. See “Remove the front top cover” on page 233. 2. Remove the upper processor board (CPU BD) air baffle. See “Remove the upper processor board (CPU BD) air baffle” on page ThinkSystem SR950 V3 User Guide...
Page 201 To replace a PHM on the lower processor board (MB), remove the following: 1. Remove the front top cover. See “Remove the front top cover” on page 233. 2. Remove the upper processor board (CPU BD) air baffle. See “Remove the upper processor board (CPU BD) air baffle”...
Page 202: Sink
Note: The heat sink, processor, and processor carrier for your system might be different from those shown in the illustrations. Procedure Step 1. Separate the processor from the heat sink and carrier. ThinkSystem SR950 V3 User Guide...
Page 203 Figure 149. Separating a processor from the heat sink and carrier Note: Do not touch the contacts on the processor. Lift the handle to release the processor from the carrier. Hold the processor by its edges; then, lift the processor from the heat sink and carrier. Without putting the processor down, wipe the thermal grease from the top of the processor with an alcohol cleaning pad;...
Page 204: Install A Processor And Heat Sink
• Before you install a new PHM or replacement processor, update your system firmware to the latest level. “Update the firmware” on page 275. The following illustration shows the components of the PHM. ThinkSystem SR950 V3 User Guide...
Page 205 Clips to secure carrier to heat sink Firmware and driver download: You might need to update the firmware or driver after replacing a component. • Go to https://datacentersupport.lenovo.com/products/servers/thinksystem/sr950v3/7dc4/downloads/driver- to see the latest firmware and driver updates for your server. list/ • Go to “Update the firmware”...
Page 206 Press the processor and secure the unmarked end under the clip on the carrier. Carefully pivot the sides of the carrier down and away from the processor. Press the processor and secure the sides under the clips on the carrier. ThinkSystem SR950 V3 User Guide...
Page 207 Note: To prevent the processor from falling out of the carrier, keep the processor-contact side up and hold the processor-carrier assembly by the sides of the carrier. Step 3. Apply thermal grease. • If you are replacing the heat sink and reusing the processor, a new heat sink comes with thermal grease and you do not need to apply new thermal grease.
Page 208 Step 5. Install the processor-heat-sink module into the processor socket. Notes: • Do not touch the contacts on the bottom of the processor. • Keep the processor socket clean from any object to prevent possible damages. ThinkSystem SR950 V3 User Guide...
Page 209 Figure 155. Installing a 3U PHM Rotate the anti-tilt wire bails inward. Align the triangular mark and four Torx T30 nuts on the PHM with the triangular mark and threaded posts of the processor socket; then, insert the PHM into the processor socket. Rotate the anti-tilt wire bails outward until they engage with the hooks in the socket.
Page 210: Security Bezel Replacement
If the security bezel is locked, unlock it with the key. Figure 156. Unlocking security bezel Step 2. Remove the security bezel. Loosen the thumbscrews. Use a screwdriver if needed. Lift the security bezel from the rack flanges to remove it. ThinkSystem SR950 V3 User Guide...
Page 211: Install The Security Bezel
Figure 157. Removing security bezel After you finish 1. Install a replacement unit. See “Install the security bezel” on page 201. 2. If you are instructed to return the component or optional device, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you. Demo video Watch the procedure on YouTube Install the security bezel...
Page 212 Figure 158. Key removal Step 2. Install the security bezel. Align and install the security bezel onto the rack flanges. Tighten the thumbscrews on the security bezel. Use a screwdriver if needed. ThinkSystem SR950 V3 User Guide...
Page 213 Figure 159. Installing security bezel Step 3. (Optional) Lock the security bezel with the key. Chapter 5 Hardware replacement procedures...
Page 214: Serial Port Assembly Replacement
• Power off the server and peripheral devices, disconnect the power cords from the primary chassis, then disconnect the power cords from the secondary chassis. See “Power off the server” on page ThinkSystem SR950 V3 User Guide...
Page 215: Install The Serial Port Assembly
• Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static- sensitive components in their static-protective packages until installation, and handling these devices with an electrostatic-discharge wrist strap or other grounding system. •...
Page 216 2. For primary chassis only, reinstall the support bracket. See “Install the support bracket” on page 213. 3. Reinstall the upper processor board (CPU BD). See “Install the upper processor board (CPU BD)” on page 252. ThinkSystem SR950 V3 User Guide...
Page 217: Sideband Card Replacement
4. Reinstall the upper processor board (CPU BD) air baffle. See “Install the upper processor board (CPU BD) air baffle” on page 5. Reinstall the front top cover. See “Install the front top cover” on page 239. 6. Complete the parts replacement. See “Complete the parts replacement”...
Page 218 Press on the latch to disengage the sideband card from the PCIe slot. Grasp the sideband card by its edges and carefully pull it out of the PCIe slot. Step 4. If necessary, install the left PCIe filler. ThinkSystem SR950 V3 User Guide...
Page 219: Install The Sideband Card
“Remove the server from rails” on page Firmware and driver download: You might need to update the firmware or driver after replacing a component. • Go to https://datacentersupport.lenovo.com/products/servers/thinksystem/sr950v3/7dc4/downloads/driver- to see the latest firmware and driver updates for your server. list/ Chapter 5 Hardware replacement procedures...
Page 220 If the left PCIe filler is installed, remove it. Figure 166. Removing left PCIe filler Step 2. Install the sideband card. Figure 167. Installing sideband card Make sure the latch on the PCIe slot is in the unlocked position. ThinkSystem SR950 V3 User Guide...
Page 221: Support Bracket Replacement
Align the sideband card with the connector on the PCIe slot; then, carefully press the sideband card straight into the slot until it is securely seated and its bracket also is secured. Secure the sideband card with a screw. Step 3. Install the left PCIe filler.
Page 222 “Install the support bracket” on page 213. 2. If you are instructed to return the component or optional device, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you. ThinkSystem SR950 V3 User Guide...
Page 223: Install The Support Bracket
Demo video Watch the procedure on YouTube Install the support bracket Follow the instructions in this section to install the support bracket. About this task Attention: • Read “Installation Guidelines” on page 41 “Safety inspection checklist” on page 42 to ensure that you work safely.
Page 224: System I/O Board And Interposer Board Replacement (Trained Technician Only)
Follow the instructions in this section to remove and install the system I/O board and interposer board. Important: This task must be operated by trained technicians that are certified by Lenovo Service. Do not attempt to remove or install the part without proper training and qualification.
Page 225 “Remove the server from rails” on page Procedure Step 1. Make preparation for the task. Perform OneCLI commands to back up the UEFI settings. See https://pubs.lenovo.com/lxce- onecli/onecli_r_save_command Perform both OneCLI commands and XCC actions to back up the XCC settings. See https:// pubs.lenovo.com/lxce-onecli/onecli_r_save_command https://pubs.lenovo.com/xcc2/NN1ia_ c_backupthexcc.html...
Page 226: Module
(Firmware and RoT Security Module). About this task Important: This task must be operated by trained technicians that are certified by Lenovo Service. Do not attempt to remove or install the part without proper training and qualification. (Lenovo trained technician only) After replacing the Firmware and RoT Security Module, update the UEFI, XCC, and LXPM firmware to the specific version supported by the server.
Page 227 256. 7. Update the UEFI, XCC, and LXPM firmware to the specific version supported by the server. See https:// glosse4lenovo.lenovo.com/wiki/glosse4lenovo/view/How%20To/System%20related/ How%20to%20do%20RoT%20Module%20FW%20update%20on%20ThinkSystem%20V3%20machines/ (Lenovo service technicians only). 8. Perform OneCLI commands to restore the UEFI settings. See https://pubs.lenovo.com/lxce-onecli/onecli_ r_restore_command Chapter 5 Hardware replacement procedures...
Page 228: Board
Important: • This task must be operated by trained technicians that are certified by Lenovo Service. Do not attempt to remove or install the part without proper training and qualification. • When disconnecting cables, make a list of each cable and record the connectors the cable is connected to, and use the record as a cabling checklist after installing the new system I/O board and interposer board.
Page 229 Procedure Step 1. Make preparation for the task. Record all system configuration information, such as Lenovo XClarity Controller IP addresses, vital product data, and the machine type, model number, serial number, Universally Unique Identifier, and asset tag of the server.
Page 230 Figure 174. Loosening system I/O board and interposer assembly Step 5. Slide the system I/O board and interposer assembly towards the rear of the chassis to remove it. ThinkSystem SR950 V3 User Guide...
Page 231 Figure 175. Removing system I/O board and interposer assembly Step 6. (Optional) If you are going to replace the system I/O board, remove the Firmware and RoT Security Module from the system I/O board. See “Remove the Firmware and RoT Security Module” on page 214.
Page 232 Note: To prevent the contact of the system I/O board from damage, pinch and lift the plunger on the system I/O board upward a little and pull out the system I/O board outward. During the entire pulling action, ensure that the system I/O board remains as horizontal as possible. ThinkSystem SR950 V3 User Guide...
Page 233: Board
Follow instructions in this section to install the system I/O board and interposer board. About this task Important: This task must be operated by trained technicians that are certified by Lenovo Service. Do not attempt to remove or install the part without proper training and qualification.
Page 234 Lower the system I/O board onto the bracket and slide it towards the openings on the bracket. Make sure the plunger engages with the bracket. Install four screws to fix the system I/O board into place. Step 3. Install the interposer board. ThinkSystem SR950 V3 User Guide...
Page 235 Figure 179. Installing interposer board Align the holes in the interposer board with the pins on the bracket; then, lower the interposer board onto the bracket and use both hands to push the interposer board by its edges into the contacts on the system I/O board. Note: To prevent the contacts of the system I/O board from damage, ensure that the interposer board is aligned correctly with the contacts on the system I/O board, and remains as horizontal as possible during the insertion.
Page 236 Firmware and RoT Security Module” on page 216. Step 5. Align the system I/O board and interposer board assembly with the pins on the support bracket; then slide it towards the front of the chassis to install it. ThinkSystem SR950 V3 User Guide...
Page 237 Figure 180. Installing system I/O board and interposer assembly Step 6. Install two screws on the front of the chassis to secure the system I/O board and interposer assembly. Chapter 5 Hardware replacement procedures...
Page 238 Figure 182. Connecting SCM cable Connect the SCM cable to the interposer board. Install two screws to secure the SCM cable. Step 8. If necessary, reconnect all the cables that were removed previously. After you finish ThinkSystem SR950 V3 User Guide...
Page 239: Update The Vital Product Data (Vpd)
• Lenovo XClarity Essentials OneCLI commands Using Lenovo XClarity Provisioning Manager Steps: 1. Start the server and press the key according to the on-screen instructions. The Lenovo XClarity Provisioning Manager interface is displayed by default. 2. Click on the top right corner of the Lenovo XClarity Provisioning Manager main interface.
Page 240: Hide/Observe Tpm
Lenovo XClarity Essentials OneCLI. To disable TPM, do the following: 1. Download and install Lenovo XClarity Essentials OneCLI. To download Lenovo XClarity Essentials OneCLI, go to the following site: https://datacentersupport.lenovo.com/solutions/HT116433 2. Run the following command: OneCli.exe config set TrustedComputingGroup.HideTPMfromOS "Yes" --imm <userid>:<password>@<ip_address>...
Page 241: Update The Tpm Firmware
Follow the procedure below to see the TPM firmware version: From Lenovo XClarity Provisioning Manager 1. Start the server and press the key specified in the on-screen instructions to display the Lenovo XClarity Provisioning Manager interface. (For more information, see the “Startup” section in the LXPM documentation compatible with your server at https://pubs.lenovo.com/lxpm-overview/...
Page 242: Enable Uefi Secure Boot
To enable UEFI Secure Boot from Lenovo XClarity Provisioning Manager: 1. Start the server and press the key specified in the on-screen instructions to display the Lenovo XClarity Provisioning Manager interface. (For more information, see the “Startup” section in the LXPM documentation compatible with your server at https://pubs.lenovo.com/lxpm-overview/...
Page 243: Top Cover Replacement
For more information about the Lenovo XClarity Essentials OneCLI command, see: https://pubs.lenovo.com/lxce-onecli/onecli_r_set_command Note: If disabling UEFI secure boot is needed, run the following command: OneCli.exe config set SecureBootConfiguration.SecureBootSetting Disabled --bmc <userid>:<password>@<ip_ address> Top cover replacement Follow the instructions in this section to remove and install the top cover.
Page 244 Figure 183. Front top cover locking/unlocking direction Step 2. Remove the front top cover from the chassis. Figure 184. Removing front top cover Attention: • Service label is located on the inside of the front top cover. ThinkSystem SR950 V3 User Guide...
Page 245: Remove The Rear Top Cover
• For proper cooling and air flow, install the front and rear top covers before you power on the server. Operating the server with the top covers removed might damage server components. Press the blue button on the front top cover release latch. Rotate the end of the latch up until it is in vertical position.
Page 246: Install The Rear Top Cover
Demo video Watch the procedure on YouTube Install the rear top cover Follow the instructions in this section to install the rear top cover. About this task ThinkSystem SR950 V3 User Guide...
Page 247 S014 CAUTION: Hazardous voltage, current, and energy levels might be present. Only a qualified service technician is authorized to remove the covers where the label is attached. S033 CAUTION: Hazardous energy present. Voltages with hazardous energy might cause heating when shorted with metal, which might result in spattered metal, burns, or both.
Page 248 1. Reinstall the front top cover. See “Install the front top cover” on page 239. 2. Complete the parts replacement. See “Complete the parts replacement” on page 256. Demo video Watch the procedure on YouTube ThinkSystem SR950 V3 User Guide...
Page 249: Install The Front Top Cover
Install the front top cover Follow the instructions in this section to install the front top cover. About this task S014 CAUTION: Hazardous voltage, current, and energy levels might be present. Only a qualified service technician is authorized to remove the covers where the label is attached. S033 CAUTION: Hazardous energy present.
Page 250 Align the front top cover guide pins with the guide holes on the chassis; then place the front top cover on top of the chassis with both sides aligned. Rotate the latch down until it stops. Step 2. (Optional) Lock the front top cover with a screw driver (direction ThinkSystem SR950 V3 User Guide...
Page 251: Upi Module Replacement
Unlocking direction Locking direction Figure 188. Front top cover locking/unlocking direction After you finish Complete the parts replacement. See “Complete the parts replacement” on page 256. Demo video Watch the procedure on YouTube UPI module replacement Follow the instructions in this section to remove or install the UPI module. Remove the UPI module Follow instructions in this section to remove the UPI module.
Page 252 Figure 189. Disconnecting UPI module cables Open the cable clips and unhook the UPI module cables. Disconnect the UPI module cables from the lower processor board (MB). Step 3. Remove the eight screws that secure the UPI module. ThinkSystem SR950 V3 User Guide...
Page 253 Figure 190. Removing UPI module screws Step 4. Push the UPI module out of the UPI module hole and carefully lift it out of the chassis. Figure 191. Removing UPI module After you finish Chapter 5 Hardware replacement procedures...
Page 254: Install The Upi Module
“Remove the server from rails” on page Procedure Step 1. Align and install the UPI module into the UPI module hole from inside of the chassis. Figure 192. Installing UPI module Step 2. Secure the UPI module with eight screws. ThinkSystem SR950 V3 User Guide...
Page 255 Figure 193. Installing UPI module screws Step 3. Connect the UPI module cables. Chapter 5 Hardware replacement procedures...
Page 256 5. Reinstall the front top cover. See “Install the front top cover” on page 239. 6. Complete the parts replacement. See “Complete the parts replacement” on page 256. Demo video Watch the procedure on YouTube ThinkSystem SR950 V3 User Guide...
Page 257: Upper Processor Board (Cpu Bd) Replacement
Upper processor board (CPU BD) replacement Follow the instructions in this section to remove and install an upper processor board (CPU BD). Remove the upper processor board (CPU BD) Follow the instructions in this section to remove the upper processor board (CPU BD). About this task S002 CAUTION:...
Page 258 Open the cable clips and unhook the UPI module cables. Disconnect the UPI module cables from the upper processor board (CPU BD). Step 3. Disconnect the internal sideband cable from the upper processor board (CPU BD) and lower processor board (MB). ThinkSystem SR950 V3 User Guide...
Page 259 Figure 196. Disconnecting internal sideband cable Step 4. Disconnect the internal UPI cables. Figure 197. Disconnecting internal UPI cables Chapter 5 Hardware replacement procedures...
Page 260 Make a list of each remaining cable and record the connectors the cable is connected to; then, disconnect and remove all the remaining cables on the upper processor board (CPU BD). Step 7. Disengage the upper processor board (CPU BD). ThinkSystem SR950 V3 User Guide...
Page 261 Figure 199. Disengaging upper processor board (CPU BD) Loosen the three thumbscrews. Use a screwdriver if needed. Open the plunger to the unlocked position. Step 8. Grasp the blue handles and remove the upper processor board (CPU BD). Figure 200. Removing upper processor board (CPU BD) After you finish Chapter 5 Hardware replacement procedures...
Page 262: Install The Upper Processor Board
Step 1. Grasp the blue handles and lower the upper processor board (CPU BD) into the chassis until the T- pins on the inside of the chassis engages with the upper processor board (CPU BD). ThinkSystem SR950 V3 User Guide...
Page 263 Figure 201. Installing upper processor board (CPU BD) Step 2. Secure the upper processor board (CPU BD). Figure 202. Securing upper processor board (CPU BD) Close the plunger to the locked position. Tighten the three thumbscrews. Use a screwdriver if needed. Step 3.
Page 264 Figure 203. Connecting upper processor board (CPU BD) power cables Step 4. Connect the internal UPI cables. Figure 204. Connecting internal UPI cables Route the internal UPI cables through the cable clips. Connect the internal UPI cables to the upper processor board (CPU BD). ThinkSystem SR950 V3 User Guide...
Page 265 Step 5. Connect the internal sideband cable to the upper processor board (CPU BD) and lower processor board (MB). Figure 205. Connecting internal sideband cable Step 6. Connect the UPI module cables. Chapter 5 Hardware replacement procedures...
Page 266: Complete The Parts Replacement
“Install the front top cover” on page 239. 4. Complete the parts replacement. See “Complete the parts replacement” on page 256. Demo video Watch the procedure on YouTube Complete the parts replacement Go through the checklist to complete parts replacement ThinkSystem SR950 V3 User Guide...
Page 267 8. Power on the server and any peripheral devices. See “Power on the server” on page 9. Update the server configuration. • Download and install the latest device drivers: http://datacentersupport.lenovo.com • Update the system firmware. See “Update the firmware” on page 275.
Page 268 ThinkSystem SR950 V3 User Guide...
Page 269: Chapter 6. Internal Cable Routing
Power connector SAS / SATA connector Upper processor board (CPU BD) connectors for cable routing The following illustrations show the internal connectors on the upper processor board (CPU BD) that are used for internal cable routing. © Copyright Lenovo 2023, 2024...
Page 270: System I/O Board And Interposer Assembly Connectors For Cable Routing
UPI0_L connector PE4CD_R connector System I/O board and interposer assembly connectors for cable routing The following illustrations show the internal connectors on the System I/O board and interposer assembly that are used for internal cable routing. ThinkSystem SR950 V3 User Guide...
Page 271: Cable Routing
Figure 209. System I/O board and interposer assembly connectors Table 22. System I/O board and interposer assembly connectors Serial port module connector SCM connector Second management Ethernet connector Rear OCP connector Front operator panel connector Rear Ethernet card connector External diagnostics handset connector PHY 2 connector Lower processor board (MB) connectors for cable routing The following illustrations show the internal connectors on the lower processor board (MB) that are used for...
Page 272: Power Distribution Board Connectors
UPI3_R connector Internal sideband connector Rear OCP connector Top cover intrusion connector UPI0_R connector UPI0_L connector UPI1_R connector UPI1_L connector Power distribution board connectors See this section to locate the connectors in the power distribution board. ThinkSystem SR950 V3 User Guide...
Page 273: Pcie Riser Connectors
Power distribution board connectors Figure 211. Power distribution board connectors Table 24. Power distribution board connectors Fan carrier connector 1-6 Rear PCIe power 1 connector PIB1 connector PWR2 connector PIB2 connector PWR1 connector Rear PCIe power 2 connector PCIe riser connectors See this section to locate the connectors in the PCIe riser.
Page 274 Power 2x6 pin to power 2x6 pin (720 Drive backplane 1: Power Left riser card: Backplane power connector connector Power 2x6 pin to power 2x6 pin (720 Drive backplane 2: Power Right riser card: Backplane power connector connector ThinkSystem SR950 V3 User Guide...
Page 275 One 2.5-inch drive backplane cable routing Figure 213. One 2.5-inch drive backplane cable routing From Cable Left drive backplane: Signal connector SlimSAS x8 to 2 x SlimSAS x4 (270/ Cable clip on upper processor RAID/HBA adapter 590 mm) board (CPU BD) Note: This end of the cable is left unconnected.
Page 276: E3.S Cable Assembly Cable Routing
Use the section to understand the cable routing for the E3.S cable assembly. Notes: ↔ ↔ ↔ ↔ • Connections between connectors; , ... • When routing the cables, ensure that all cables are routed appropriately through the cable guides. ThinkSystem SR950 V3 User Guide...
Page 277: Ethernet Port Assembly Cable Routing
Figure 215. E3.S cable assembly cable routing From Left E3.S cable assembly: Drive 0/1 or 8/9 Upper processor board (CPU BD): PE4AB_L connector Left E3.S cable assembly: Drive 2/3 or 10/11 Upper processor board (CPU BD): PE4CD_L connector Right E3.S cable assembly: Drive 4/5 or 12/13 Upper processor board (CPU BD): PE4AB_R connector Upper processor board (CPU BD): PE4CD_R Right E3.S cable assembly: Drive 6/7 or 14/15...
Page 278: Ocp Cable Routing
Use the section to understand the cable routing for the OCP module. Notes: ↔ ↔ ↔ ↔ • Connections between connectors; , ... • When routing the cables, ensure that all cables are routed appropriately through the cable guides. ThinkSystem SR950 V3 User Guide...
Page 279: Riser Card Cable Routing
Figure 217. OCP cable routing From Cable Lower processor board (MB): Rear OCP connector Interposer board : Rear OCP OCP cage Internal OCP (330/750/650 mm) connector Lower processor board (MB): Rear OCP power connector Riser card cable routing Use the section to understand the cable routing for the riser card. Notes: ↔...
Page 280 Power 2x8 pin to power 2x8 pin (90 Left riser card: Riser power PDB: Rear PCIe power 1 connector connector Power 2x8 pin to power 2x8 pin (70 Right riser card: Riser power PDB: Rear PCIe power 2 connector connector ThinkSystem SR950 V3 User Guide...
Page 281 Riser card signal cable routing Signal cable routing to upper processor board (CPU Signal cable routing to lower processor board (MB) From Cable Upper processor board (CPU BD): MCIO x8 to MCIO x8 (500 mm) Left riser card: MCIO 1 connector PE3AB_L connector Upper processor board (CPU BD): MCIO x8 to MCIO x8 (500 mm)
Page 282 Right riser card: MCIO 3 connector Gen-Z 84 pin to MCIO x8 (500 mm) PE4AB_R connector Lower processor board (MB): Right riser card: MCIO 4 connector Gen-Z 84 pin to MCIO x8 (500 mm) PE4CD_R connector ThinkSystem SR950 V3 User Guide...
Page 283: Chapter 7. System Configuration
The following methods are available to set the network connection for the Lenovo XClarity Controller if you are not using DHCP: • If a monitor is attached to the server, you can use Lenovo XClarity Provisioning Manager to set the network connection.
Page 284: Connection
ID button. To connect using the Lenovo XClarity Administrator Mobile app: 1. Connect the USB cable of your mobile device to the Lenovo XClarity Controller USB connector on the server. 2. On your mobile device, enable USB tethering.
Page 285: Update The Firmware
Enterprise Server (SLES) operating system distributions. Machine-type-specific firmware-only Update Bundles (Service Packs) are also available. Firmware updating tools See the following table to determine the best Lenovo tool to use for installing and setting up the firmware: Chapter 7 System configuration...
Page 286 Selected I/ √ √ Lenovo XClarity band O devices Integrator (LXCI) for VMware vCenter Off-Target In-band All I/O √ √ √ Lenovo XClarity devices Integrator (LXCI) for Out-of- Microsoft Windows band Admin Center On-Target Off-Target ThinkSystem SR950 V3 User Guide...
Page 287 • Lenovo XClarity Controller If you need to install a specific update, you can use the Lenovo XClarity Controller interface for a specific server. Notes: – To perform an in-band update through Windows or Linux, the operating system driver must be installed and the Ethernet-over-USB (sometimes called LAN over USB) interface must be enabled.
Page 288: Configure The Firmware
Several options are available to install and set up the firmware for the server. Important: Lenovo does not recommend setting option ROMs to Legacy, but you can conduct this setting if necessary. Note that this setting prevents UEFI drivers for the slot devices from loading, which may cause negative side effects to Lenovo software, such as LXCA, OneCLI, and XCC.
Page 289: Memory Module Configuration
In addition, you can choose to make the text-based interface the default interface that is displayed when you start LXPM. To do this, go to Lenovo XClarity Provisioning Manager ➙ UEFI Setup ➙ System Settings ➙ <F1>Start Control ➙ Text Setup. To start the server with Graphic User Interface, select Auto or Tool Suite.
Page 290: Enable Software Guard Extensions (Sgx)
OS logical drives or volumes. An introduction to RAID is available at the following Lenovo Press website: https://lenovopress.lenovo.com/lp0578-lenovo-raid-introduction Detailed information about RAID management tools and resources is available at the following Lenovo Press website: https://lenovopress.lenovo.com/lp0579-lenovo-raid-management-tools-and-resources Intel VROC...
Page 291: Deploy The Operating System
• VMware ESXi • Red Hat Enterprise Linux • SUSE Linux Enterprise Server Complete list of available operating systems: https://lenovopress.lenovo.com/osig Tool-based deployment • Multi-server Available tools: – Lenovo XClarity Administrator https://pubs.lenovo.com/lxca/compute_node_image_deployment – Lenovo XClarity Essentials OneCLI Chapter 7 System configuration...
Page 292: Single-Server
– Lenovo XClarity Integrator deployment pack for SCCM (for Windows operating system only) https://pubs.lenovo.com/lxci-deploypack-sccm/dpsccm_c_endtoend_deploy_scenario • Single-server Available tools: – Lenovo XClarity Provisioning Manager “OS Installation” section in the LXPM documentation compatible with your server at https:// pubs.lenovo.com/lxpm-overview/ – Lenovo XClarity Essentials OneCLI https://pubs.lenovo.com/lxce-onecli/onecli_r_uxspi_proxy_tool...
Page 293: Chapter 8. Problem Determination
An alert is a message or other indication that signals an event or an impending event. Alerts are generated by the Lenovo XClarity Controller or by UEFI in the servers. These alerts are stored in the Lenovo XClarity Controller Event Log. If the server is managed by the Chassis Management Module 2 or by the Lenovo XClarity Administrator, alerts are automatically forwarded to those management applications.
Page 294 Lenovo XClarity Controller event log The Lenovo XClarity Controller monitors the physical state of the server and its components using sensors that measure internal physical variables such as temperature, power-supply voltages, fan speeds, and component status. The Lenovo XClarity Controller provides various interfaces to systems management software and to system administrators and users to enable remote management and control of a server.
Page 295: Display
“Viewing Event Logs” section in the XCC documentation compatible with your server at https:// pubs.lenovo.com/lxcc-overview/ Troubleshooting by system LEDs and diagnostics display See the following section for information on available system LEDs and diagnostics display. Drive LEDs This topic provides information on drive LEDs.
Page 296 ID button, the state of the system ID LED changes. The LED can be changed to on, blinking, or off. You can also use the Lenovo XClarity Controller or a remote management program to change the state of the system ID LED to assist in visually locating the server among other servers.
Page 297: Power Supply Leds
Description Status Color Action An error has been detected on the server. Causes might include one or more of the following errors: • The temperature of the server reached the non-critical temperature threshold. • The voltage of the server reached the Check system logs to identify the failed Yellow non-critical voltage threshold.
Page 298: Upper Processor Board (Cpu Bd) Leds
Fault LED • Amber: The power supply may have failed. Dump the FFDC log from the system and contact Lenovo back end support team for PSU data log reviewing. Upper processor board (CPU BD) LEDs The following illustrations show the light-emitting diodes (LEDs) on the upper processor board (CPU BD).
Page 299: System I/O Board Leds
• Blinking (about one flash per second): FPGA is working normally. (Green) • On or off: FPGA is not working. 1. Replace the lower processor board (MB). 2. If the problem remains, contact Lenovo Support. P5V_AUX status LED • On: P5V_AUX power is present. (Green) •...
Page 300 RoT security module are installed correctly. (Trained technician only) Reinstall them if needed. 3. (Trained technician only) Replace the firmware and RoT security module. 4. (Trained technician only) Replace the system I/O board. ThinkSystem SR950 V3 User Guide...
Page 301: Lower Processor Board (Mb) Leds
RoT security module are installed correctly. (Trained technician only) Reinstall them if needed. 3. If the problem remains, contact Lenovo Support. Lower processor board (MB) LEDs The following illustrations show the light-emitting diodes (LEDs) on the lower processor board (MB).
Page 302: Firmware And Rot Security Module Leds
(Green) • On or off: FPGA is not working. 1. Replace the lower processor board (MB). 2. If the problem remains, contact Lenovo Support. Power fault LED (Amber) • Off: System normal. • Blinking (about one flash per second): System fault occurred.
Page 303: Xcc System Management Port Leds
Table 30. LEDs description FPGA Fatal heart- heart- Error beat beat note note Scenario Actions Replace the Firmware and RoT security module fatal firmware failure RoT Security Module. Blink Replace the Firmware and RoT Security Module. Blink Replace the Firmware and RoT Security Module.
Page 304: External Diagnostics Handset
External diagnostics connector This connector is located on the front of the server, and is used to connect an External Diagnostics Handset. Note: When unplugging the External Diagnostics Handset, see the following instructions: ThinkSystem SR950 V3 User Guide...
Page 305 Press the plastic clip on the plug forward. Hold the clip and remove the cable from the connector. Display panel overview The diagnostics device consists of an LCD display and 5 navigation buttons. LCD display Scroll buttons (up/down/left/right) Press the scroll buttons to locate and select system information.
Page 306 Following is the list of available options. Switch between an option and the subordinate information entries with the select button, and switch among options or information entries with the scroll buttons. Depending on the model, the options and entries on the LCD display might be different. ThinkSystem SR950 V3 User Guide...
Page 307 Home Menu (System Status Dashboard) Home Menu Example System name System status Active alert quantity Temperature Power consumption Checkpoint code Active Alerts Sub Menu Example Home screen: Active error quantity Note: The “Active Alerts” menu displays only the quantity 1 Active Alerts of active errors.
Page 308 • Static IPv6 IP IPv4 Network Mask: • Current IPv6 Gateway x.x.x.x • IPv6 DNS IPv4 Default Gateway: Note: Only the MAC address that is currently in use is x.x.x.x displayed (extension or shared). ThinkSystem SR950 V3 User Guide...
Page 309: General Problem Determination Procedures
System Environmental Information Sub Menu Example Ambient Temp: 24 C Exhaust Temp: 30 C • Ambient temperature CPU1 Temp: 50 C • Exhaust temperature PSU1: Vin= 213 w • CPU temperature Inlet= 26 C • PSU status FAN1 Front: 21000 RPM •...
Page 310: Resolving Suspected Power Problems
• Printer, mouse, and non-Lenovo devices. • Each adapter. • Hard disk drives. • Memory modules until you reach the minimal configuration for debugging that is supported for the server. To determine the minimal configuration for your server, see “Minimal configuration for debugging” in “Technical specifications”...
Page 311: Troubleshooting By Symptom
1. Check the event log of the application that is managing the server and follow the suggested actions to resolve any event codes. • If you are managing the server from the Lenovo XClarity Administrator, begin with the Lenovo XClarity Administrator event log.
Page 312 (Windows and Linux base operating systems will be using different method). Enter the UEFI setup menus and disable the feature, or disable it with the following OneCli command. OneCli.exe config set SystemRecovery.RebootSystemOnNMI Disable --bmc XCC_USER:XCC_PASSWORD@XCC_IPAddress ThinkSystem SR950 V3 User Guide...
Page 313: Problems
283 for information about viewing the event log. If you are using Linux base operating system, then capture all logs back to Lenovo support for further investigation. Keyboard, mouse, KVM switch or USB-device problems Use this information to solve problems related to a keyboard, mouse, KVM switch or USB-device problems.
Page 314: Memory Problems
Note: Before you install or remove a memory module, you must first remove the AC power for at least 10 seconds. 1. Make sure that: • No error LEDs are lit. See “Troubleshooting by system LEDs and diagnostics display” on page 285. • Memory mirrored channel does not account for the discrepancy. ThinkSystem SR950 V3 User Guide...
Page 315: Monitor And Video Problems
LXPM interface is displayed by default. (For more information, see the “Startup” section in the LXPM documentation compatible with your server at .) You https://pubs.lenovo.com/lxpm-overview/ can perform memory diagnostics with this interface. From the Diagnostic page, go to Run Diagnostic ➙ Memory test ➙ Advanced Memory Test.
Page 316 To use the management controller remote presence function, remove the optional video adapter. 3. If the server is installed with the graphical adapters while turning on the server, the Lenovo logo is displayed on the screen after approximately 3 minutes. This is normal operation while the system loads.
Page 317: Network Problems
c. Monitor d. (Trained technician only) Upper processor board (CPU BD) or lower processor board (MB) The wrong characters appear on the screen Complete the following steps until the problem is solved: 1. Verify that the language and locality settings are correct for the keyboard and operating system. 2.
Page 318: Server Hangs During The Uefi Boot Process
If the system hangs during the UEFI boot process with the message UEFI: DXE INIT on the display, make sure that Option ROMs were not configured with a setting of Legacy. You can remotely view the current settings for Option ROMs by running the following command using the Lenovo XClarity Essentials OneCLI: onecli config show EnableDisableAdapterOptionROMSupport --bmc xcc_userid:xcc_password@xcc_ipaddress...
Page 319: Voltage Planar Fault Is Displayed In The Event Log
Complete the following steps until the problem is solved. 1. An unusual smell might be coming from newly installed equipment. 2. If the problem remains, contact Lenovo Support. Server seems to be running hot Complete the following steps until the problem is solved.
Page 320: Optional-Device Problems
• “Insufficient PCIe resources are detected.” on page 311 • “A Lenovo optional device that was just installed does not work.” on page 311 • “A Lenovo optional device that worked previously does not work now” on page 312 External USB device is not recognized Complete the following steps until the problem is resolved: 1.
Page 321 9. DC cycle the system and ensure the system is enter UEFI boot menu or the operating system; then, capture the FFDC log. 10. Contact Lenovo technical support. A Lenovo optional device that was just installed does not work. 1. Make sure that: • The device is supported for the server (see https://serverproven.lenovo.com...
Page 322: Performance Problems
5. If there is any cable damages, then replace the cable. A Lenovo optional device that worked previously does not work now 1. Make sure that all of the cable connections for the device are secure. 2. If the device comes with test instructions, use those instructions to test the device.
Page 323: Power Problems
6. If everything is still done and the issue cannot be resolved, collect the failure information with system logs captured to Lenovo support. Server does not power on Complete the following steps until the problem is resolved: 1.
Page 324: Serial-Device Problems
Note: If you have just installed an adapter or memory, the server might have a memory-address conflict. • The software is designed to operate on the server. • Other software works on the server. ThinkSystem SR950 V3 User Guide...
Page 325: Storage Drive Problems
“Startup” section in the LXPM documentation compatible with your server .) You can perform drive diagnostics from this interface. https://pubs.lenovo.com/lxpm-overview/ From the Diagnostic page, click Run Diagnostic ➙ Disk Drive Test. • If the green activity LED is flashing and the yellow status LED is flashing slowly, the drive is recognized by the controller and is rebuilding.
Page 326 Multiple drives fail Complete the following steps until the problem is solved: • View the Lenovo XClarity Controller event log for events related to power supplies or vibration issues and resolve those events. • Make sure that the device drivers and firmware for the drive and server are at the latest level.
Page 327 5. Power on the server and observe the activity of the drive LEDs. Chapter 8 Problem determination...
Page 328 ThinkSystem SR950 V3 User Guide...
Page 329: Appendix A. Hardware Disassembling For Recycle
Remove sixteen screws and separate the upper processor board (CPU BD) from the supporting sheet metal. Figure 230. Screw removal After you finish After disassembling the upper processor board (CPU BD), recycle the unit in compliance with local regulations. © Copyright Lenovo 2023, 2024...
Page 330: Recycle
Remove six screws from the bottom of the lower processor board (MB) and remove the three lower processor board (MB) brackets. Figure 231. Lower processor board (MB) bracket removal Step 2. Remove the four screws that secure the lower processor board (MB) handle; then, remove the lower processor board (MB) handle. ThinkSystem SR950 V3 User Guide...
Page 331 Figure 232. Handle removal Step 3. Remove twenty-one screws and separate the lower processor board (MB) from the supporting sheet metal. Appendix A. Hardware disassembling for recycle...
Page 332: Disassemble The Chassis For Recycle
Disassemble the chassis for recycle Follow the instructions in this section to disassemble the chassis before recycling. About this task Refer to local environmental, waste or disposal regulations to ensure compliance. Procedure Step 1. Make preparation for the task. ThinkSystem SR950 V3 User Guide...
Page 333 Gently pull and disengage every installed power supply unit. See “Remove a hot-swap power supply unit” on page 184. Remove the front top cover. See “Remove the front top cover” on page 233. Remove the rear top cover. See “Remove the rear top cover” on page 235.
Page 334 ThinkSystem SR950 V3 User Guide...
Page 335: Appendix B. Getting Help And Technical Assistance
Appendix B. Getting help and technical assistance If you need help, service, or technical assistance or just want more information about Lenovo products, you will find a wide variety of sources available from Lenovo to assist you. On the World Wide Web, up-to-date information about Lenovo systems, optional devices, services, and support are available at: http://datacentersupport.lenovo.com...
Page 336: Collecting Service Data
Collecting service data To clearly identify the root cause of a server issue or at the request of Lenovo Support, you might need collect service data that can be used for further analysis. Service data includes information such as event logs and hardware inventory.
Page 337: Contacting Support
Support when certain serviceable events occur in Lenovo XClarity Administrator and the managed endpoints. You can choose to send diagnostic files to Lenovo Support using Call Home or to another service provider using SFTP. You can also manually collect diagnostic files, open a problem record, and send diagnostic files to the Lenovo Support.
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Page 339: Appendix C. Documents And Supports
• UEFI Manual – UEFI setting introduction Support websites This section provides driver and firmware downloads and support resources. Support and downloads • Drivers and Software download website for ThinkSystem SR950 V3 – https://datacentersupport.lenovo.com/products/servers/thinksystem/sr950v3/7dc4/downloads/driver-list/ • Lenovo Data Center Forum –...
Page 340 – https://serverproven.lenovo.com • Operating System Installation Instructions – https://pubs.lenovo.com/thinksystem#os-installation • Submit an eTicket (service request) – https://support.lenovo.com/servicerequest • Subscribe to Lenovo Data Center Group product notifications (Stay up to date on firmware updates) – https://datacentersupport.lenovo.com/solutions/ht509500 ThinkSystem SR950 V3 User Guide...
Page 341: Appendix D. Notices
Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead.
Page 342: Trademarks
(TBW). A device that has exceeded this limit might fail to respond to system-generated commands or might be incapable of being written to. Lenovo is not responsible for replacement of a device that has exceeded its maximum guaranteed number of program/erase cycles, as documented in the Official Published Specifications for the device.
Page 343: Taiwan Region Bsmi Rohs Declaration
Taiwan Region BSMI RoHS declaration Taiwan Region import and export contact information Contacts are available for Taiwan Region import and export information. Appendix D. Notices...
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