Page 1 IBM System Storage DS3950 Storage Subsystem Installation, User’s, and Maintenance Guide GA32-0953-03...
Page 3 IBM System Storage DS3950 Storage Subsystem Installation, User’s, and Maintenance Guide GA32-0953-03...
Page 4 Before using this information and the product it supports, be sure to read the general information in “Safety” on page xi and “Notices” on page 201. This edition applies to the IBM System Storage DS3950 Storage Subsystem with controller firmware version 7.60, and to all subsequent releases and modifications until otherwise indicated in new editions.
Page 5: Table Of Contents
Removing an ac power supply and fan unit Taiwan Contact Information . . xxv Removing an E-DDM . . 39 Installing the DS3950 into a rack on the support Chapter 1. Introduction ..1 rails . . 40 Overview .
Page 6 Appendix F. Accessibility ..199 Cache memory . . 116 Subsystem cache battery . . 117 Notices ....201 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 7 Trademarks . . 202 Japan Electronics and Information Technology Important notes . 203 Industries Association (JEITA) Statement . . 207 Particulate contamination . . 203 Korea Communications Commission (KCC) Documentation format . . 204 Class A Statement . . 207 Electronic emission notices .
Page 8 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 9: Figures
Figures DS3950 hot-swap drive bays . Cabling for one DS3950 and up to six storage Back view of Model 94H; controllers with four expansion enclosures . . 64 total Fibre Channel host channels . . 10 Cabling for one DS3950 and up to six storage Back view of Model 98H;...
Page 10 Hot-swap E-DDM LEDs . . 131 view . 179 E-DDM CRU handle . . 131 Rack specifications dimensions, bottom front Link rate LEDs . . 140 view . 179 viii IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 11 Tables Where to find DS3950, DS4000, and Storage subsystem and controller information DS5000-family installation and configuration record . . 168 procedures . . xviii Sample information record . . 169 Default IP addresses and subnet masks Hard disk drive record .
Page 12 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 13: Safety
Safety Information document that is provided with your ® IBM System Storage DS3950 Storage Subsystem. Each caution and danger statement is numbered for easy reference to the corresponding statements in the translated document. v Danger: These statements indicate situations that can be potentially lethal or extremely hazardous to you.
Page 14 2. First, remove power cords from outlet. 3. Attach signal cables to connectors. 3. Remove signal cables from connectors. 4. Attach power cords to outlet. 4. Remove all cables from devices. 5. Turn device ON. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 15 Statement 2: CAUTION: When replacing the lithium battery, use only an equivalent type 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.
Page 16 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. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 17 Statement 8: CAUTION: Never remove the cover on a power supply or any part that has the following 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.
Page 18 State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 19: About This Document
DS3950 storage subsystem. Chapter 4, “Operating the storage subsystem,” on page 93 contains information about how to turn the power to the DS3950 storage subsystem on and off, recover from an overheated power supply and fan unit, troubleshoot, and interpret LEDs.
Page 20: Ds3950, Ds4000, And Ds5000-Family Storage
DS3950, DS4000, and DS5000-family configurations. When you install and configure your storage subsystem, refer to this table to find the documentation that explains how to complete each task. Table 1. Where to find DS3950, DS4000, and DS5000-family installation and configuration procedures Installation task...
Page 21 Table 1. Where to find DS3950, DS4000, and DS5000-family installation and configuration procedures (continued) Installation task Where to find information or procedures Mount the DS3950 v DS4800 Storage Subsystem Installation, User’s, and Maintenance storage subsystem in Guide the rack v IBM System Storage Quick Start Guide, Quick Reference for the DS4800 v DS4700 Express Storage Subsystem Installation, User’s, and...
Page 22 Table 1. Where to find DS3950, DS4000, and DS5000-family installation and configuration procedures (continued) Installation task Where to find information or procedures Route the storage v DS4100 Storage Subsystem Installation, User’s, and Maintenance expansion unit Fibre Guide Channel cables v DS4200 Express Storage Subsystem Installation, User’s, and...
Page 23 Table 1. Where to find DS3950, DS4000, and DS5000-family installation and configuration procedures (continued) Installation task Where to find information or procedures Zone the fabric v IBM System Storage DS Storage Manager Version 10 Installation switch and Host Support Guide (for storage subsystems with (SAN-attached only) controller firmware version earlier than 7.8x.xx.xx)
Page 24: Getting Information, Help, And Service
If you need help, service, or technical assistance or just want more information about IBM products, you will find a wide variety of sources available from IBM to assist you. This section contains information about where to go for additional information about IBM and IBM products, what to do if you experience a problem with your system, and whom to call for service, if it is necessary.
Page 25: Using The Documentation
Using the documentation Information about your IBM system and preinstalled software, if any, is available in the documents that come with your system. This includes printed books, online documents, readme files, and help files. See the troubleshooting information in your system documentation for instructions for using the diagnostic programs. The troubleshooting information or the diagnostic programs might tell you that you need additional or updated device drivers or other software.
Page 26: Software Service And Support
Software service and support Through the IBM Support Line, for a fee you can get telephone assistance with usage, configuration, and software problems. For information about which products are supported by Support Line in your country or region, go to the following Web site: http://www.ibm.com/services/sl/products...
Page 27: Hardware Service And Support
Hardware service and support You can receive hardware service through IBM Integrated Technology Services or through your IBM reseller, if your reseller is authorized by IBM to provide warranty service. Go to the following Web site for support telephone numbers: http://www.ibm.com/planetwide/...
Page 28 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 29: Chapter 1. Introduction
DS3950 Drive Attach 33 - 64 feature option. If you need to connect 65 - 112 drives in a DS3950 configuration, you must purchase the DS3950 Drive Attach 65- 112 feature option in addition to the DS3950 Drive Attach 33 - 64 feature option.
Page 30: Base Ds3950 Features
The DS3950 supports up to four hosts in a redundant direct-attached Fibre Channel configuration. When using Fibre Channel or Ethernet switches, you can redundantly connect up to 512 hosts to the DS3950 FC and iSCSI host ports. You can order up to 128 storage partitions for the DS3950.
Page 31: Fc-Sas Defined
See “Finding DS3950, DS4000, and DS5000-family readme files” on page xxiii to learn how to access the DS3950, DS4000, and DS5000-family readme files on the Web. FC-SAS defined In this document, the term FC-SAS refers to a SAS drive with a FC-SAS interposer that translates the SAS drive interface to a FC protocol interface.
Page 32: Inventory Checklist
– Battery units (2) – Power cables (2 rack jumper line cords) with an IEC C13 plug on end and an IEC C14 plug on the other end for connecting the DS3950 to the rack PDU outlets – Diagnostic wrap plug/coupler (1) –...
Page 33: Product Updates And Support Notifications
– IBM License Agreement – Statement of Limited Warranty – Box ID labels (used to label the enclosure IDs on the front of the DS3950) Note: If you ordered additional premium features or entitlements, the premium features activation or entitlement kits might also be shipped inside the box.
Page 34: Storage Subsystem Components
To maintain power redundancy, plug the DS3950 right and left power supply and fan units into two independent external power circuits through ac power distribution units inside a rack cabinet or directly into external receptacles. Similarly, make sure that the right and left power supplies of the storage expansion enclosures attached to the DS3950 are plugged into the same two independent external power circuits as the DS3950.
Page 35: Enhanced Disk Drive Modules (E-Ddms)
The FC-SAS E-DDMs have a FC-SAS interposer card that translates the SAS drive interface to a 4 Gbps FC protocol interface of the DS3950 drive channel. Each SAS drive, FC-SAS interposer card (with a 2.5" to 3.5" form factor conversion), and carrier assembly are called FC-SAS E-DDM CRUs.
Page 36: Controllers
E-DDMs at 4 Gbps Fibre Channel operating speed. Note: Even though the DS3950 has a 2 or 4 Gbps Fibre Channel Link Rate switch that can be used to set the drive channel speed at 2 Gbps, the link rate speed must be set to 4 Gbps.
Page 37: Connectors, Switch, And Enclosure Id
Use either Cat5E or Cat6 Ethernet cable types for iSCSI port connections. A Cat6 Ethernet cable provides optimal performance. Although both controllers (A and B) are identical, they are seated in the DS3950 chassis in opposite orientations. If the controller cannot fully be inserted in the controller bay, flip it 180 degrees and reinsert it.
Page 38: Back View Of Model 94H; Controllers With Four Total Fibre Channel Host Channels
ID settings. Figure 2 and Figure 3 on page 11 show the two different DS3950 models that are available. For more information about DS3950 controller options and other components, see the “Parts listing”...
Page 39: Setting Up Ip Addresses For Ds3950 Storage Controllers
IP addresses: v “Steps for setting up the DHCP/BOOTP server and network” v “Steps for assigning static TCP/IP addresses to the DS3950 controllers” on page Steps for setting up the DHCP/BOOTP server and network: To complete this...
Page 40 2. Start the DS Storage Manager client software. The Enterprise Management window opens. 3. Add the DS3950 subsystem to the Enterprise Management domain using the IP address of the host that has Fibre Channel connectivity to the DS3950. 4. In the Enterprise Management window, click the name of the default storage subsystem.
Page 41: Ac Power Supply And Fan Units
To preserve the optimal airflow, do not remove a failed power supply and fan unit CRU from the DS3950 chassis until you are ready to replace it with a new CRU.
Page 42: Battery Units
Power Power supply connector switch and fan unit A Figure 4. Power supply and fan unit components for the DS3950 Figure 5 shows a power supply and fan unit and the airflow through the storage subsystem. Latch Lever Figure 5. Power supply and fan unit and airflow...
Page 43: Backup Battery Unit
CAUTION: When replacing the lithium battery, use only an equivalent type 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 44: Sfp Modules
The battery unit is hot-swappable. You can remove the battery unit for servicing and then reinsert it while the DS3950 continues to perform I/O operations. However, write I/O caching is disabled when the battery is in a failed state or removed from the controller chassis.
Page 45: Software And Hardware Compatibility And Upgrades
Gbps. Conversely, an 8 Gbps SFP that is plugged into a 4 Gbps-capable port will limit the speed of the port to a maximum of 4 Gbps. Carefully check the SFP IBM part number, option number, and FRU part number to identify its speed. There are no physical features that distinguish an 8 Gbps SFP from a 4 Gbps SFP.
Page 46: Software And Firmware Support Code Upgrades
Software and firmware support code upgrades To enable support for the DS3950, you must make sure that your system software and firmware are the correct versions. The DS3950 initially shipped with controller firmware version 7.60.xx.xx. However, to support FC-SAS E-DDMs, the minimum version of controller firmware required is version 7.77.xx.xx.
Page 47: Specifications
Dimensions Figure 8 on page 20 shows the dimensions of the DS3950, which conforms to the 19-inch rack standard. Chapter 1. Introduction...
Page 48: Weight
Table 5 lists shipping carton dimensions. The height shown includes the height of the pallet. Table 5. DS3950 shipping carton dimensions Height Width Depth 45.7 cm (18.0 in.) 62.6 cm (24.5 in.) 80.7 cm (31.75 in.) IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 49: Environmental Requirements And Specifications
Temperature and humidity Table 6 lists the acceptable temperature and humidity ranges for the DS3950 Storage Subsystem when in storage or in transit. Table 7 lists temperature and humidity ranges for the storage subsystem in typical Information Technology (IT) or office environments.
Page 50: Altitude
(40,000 ft.) above sea level Airflow and heat dissipation Figure 9 shows the intended airflow for the DS3950. Allow at least 30 inches in front of the storage subsystem and at least 24 inches behind the storage subsystem for service clearance, proper ventilation, and heat dissipation.
Page 51: Shock And Vibration Requirements
Operational shock and operational vibration requirements are shown in this section. Operational Shock: The DS3950 will be able to withstand the following shock. Subjecting the equipment to a single shock pulse with the following characteristics will simulate this level of shock: v Velocity change = 20 inches per second v Wave form = Triangular, 10g @3.75 ms...
Page 52: Power And Site Wiring Requirements
(outside USA) operation. They use standard industrial wiring with line-to-neutral or line-to-line power connections. The agency ratings for the DS3950 storage subsystem are 6 amps at 100 VAC and 2.5 amps at 240 VAC. These are the overall maximum operating currents for the DS3950 storage subsystem with ac power supply and fan unit CRUs.
Page 53: Example Of Cold Aisle/Hot Aisle Rack
must position the racks in alternate rows, back-to-back and front-to-front. This arrangement is known as “cold aisle/hot aisle” and is shown in Figure 10. v Where racks are in rows, each rack must touch the rack that is next to it to reduce the amount of hot air that can flow around from the back of the rack into the intakes of the storage expansion enclosures that are in that rack.
Page 54 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 55: Chapter 2. Installing The Storage Subsystem
CAUTION: Use safe practices when lifting. Attention: A fully configured DS3950 weighs up to 40 kg (88 lb). At least two other people should help you lift the DS3950 from the shipping box. If desired, open the sides of the shipping box and remove the CRUs from the DS3950 before you lift it from the shipping box in order to lighten the storage subsystem.
Page 56: Example Of Ds3950 Serial Number, Machine
Maintenance Guide for your storage expansion enclosure to set up and mount the storage expansion enclosures. 10. Use SFP modules and Fibre Channel cables to cable the DS3950 to the EXP395 or EXP810 storage expansion enclosure. See “Connecting storage expansion enclosures to the DS3950”...
Page 57: Handling Static-Sensitive Devices
Preparing for installation Before installing the DS3950 storage subsystem, create a detailed plan of how this unit will be used in your storage configuration. The plan might include determining RAID levels, failover requirements, operating systems to be used, and total storage capacity requirements.
Page 58 2. Move the shipping box that contains the DS3950 to the site. 3. Remove the mounting rails, mounting hardware, and line jumper cords from the DS3950 shipping box. Do not remove the DS3950 from the shipping box at this time.
Page 59: Tools And Hardware Required
Attention: The mounting rails, mounting hardware, and line jumper cords might be packed beneath the DS3950 in the shipping box. To remove these items from the shipping box without first removing the DS3950, open the two long sides of the shipping box. Then open and fold flat the two short sides of the shipping box.
Page 60: Preparing The Rack Cabinet
Always connect the storage subsystem to a properly grounded outlet. v Always connect the IBM-certified rack power distribution units (PDUs) to at least two independent power circuits or sources. Complete the following steps to prepare the rack cabinet before you install the storage subsystem: 1.
Page 61: Installing The Support Rails
Use the following templates (Figure 12 and Figure 13 on page 34) to identify the proper locations for inserting M5 screws when mounting the support rails and DS3950 storage subsystem to a rack cabinet. The locations for the M5 screws are highlighted in the templates.
Page 62: Rear Rack Mounting Template
Printed in the U.S.A Figure 13. Rear rack mounting template Before installing the DS3950 in a rack cabinet, you must install the rails and rack-mounting hardware that come with your storage subsystem. The DS3950 requires an Electronic Industries Association (EIA) 310-D Type A 19-inch rack cabinet.
Page 63: Installing The Support Rails
Note the following considerations before you choose where to install the rails: v If you are installing the DS3950 into an empty rack, install it into the lowest available position so that the rack does not become unstable.
Page 64: Installing The Ds3950
DS3950 before you install it in the rack. However, if you have three or more people available to lift and install the DS3950 in a rack, you might not find it necessary to remove the CRUs before you install the DS3950. If this is the case, you can skip the CRU removal instructions provided in this section.
Page 65: Removing A Controller
The DS3950 comes with a rack-mounting hardware kit for installing it in a rack. It is easier to lift the DS3950 and install it in a rack cabinet if you remove all the CRUs first. You will need an antistatic wrist strap and a cart or level surface (to hold the CRUs).
Page 66: Removing An Ac Power Supply And Fan Unit
Note: The lever rotates upward or downward 90°, depending on whether the power supply and fan unit you are removing is in the left or right power supply and fan unit bay. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 67: Removing An E-Ddm
Lever Latch Figure 16. Removing a power supply and fan unit 3. Place the power supply and fan unit on a level surface. 4. Repeat step 1 through step 3 for the second power supply and fan unit. Removing an E-DDM Complete the following steps to remove a hot-swap E-DDM: Note: The E-DDM comes installed in a drive tray.
Page 68: Installing The Ds3950 Into A Rack On The Support Rails
CAUTION: Use safe practices when lifting. 1. Put the DS3950 on antistatic protection, and keep it on while you perform all of the remaining procedures in this chapter. 2. Using a No. 2 Phillips screwdriver, remove the four M4 screws from the rails (two screws in each rail).
Page 69: Installing The Ds3950
Using the M4 screws that you removed in step 2 on page 40, secure the sides in the back of the DS3950 to the rack rails. c. Secure the front of the DS3950 using the four M5 screws as shown in Figure 19.
Page 70: Replacing The Components
5. Continue with one of the following actions: v If you did remove the DS3950 CRUs before installation (as described in “Removing the CRUs” on page 36), continue with “Replacing the components.” v If you did not remove the DS3950 CRUs before installation, continue with Chapter 3, “Cabling the storage subsystem,”...
Page 71: Replacing An Ac Power Supply And Fan Unit
Figure 21. The left and right power supply and fan units are seated in the DS3950 chassis in opposite orientations. If you cannot fully insert the power supply and fan unit into the power supply and fan unit bay, flip it 180°...
Page 72: Replacing An E-Ddm
Latch Figure 22. Replacing an E-DDM 2. Push the tray handle down until the latch clicks into place. 3. Repeat step 1 and step 2 to replace additional E-DDMs. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 73: Chapter 3. Cabling The Storage Subsystem
Although the allowable ranges for enclosure ID settings are 0-99, do not set the enclosure ID to 00 or any number less than 80. The DS3950 enclosure ID is usually set to a value of 85 before it is shipped.
Page 74: Fibre Channel Loop And Id Settings
Notes: IBM SFP options have been tested and approved for the IBM DS storage products. For optimal performance and compatibility, always use IBM SFP options when installing the IBM DS products.
Page 75: Handling Fiber-Optic Cables
Handling fiber-optic cables Note: IBM Fibre Channel (FC) cable options have been tested and approved for the IBM DS storage products. For optimal performance and compatibility, always use IBM FC cable options when installing the IBM DS products.
Page 76: Installing Sfp Modules
Note: The SFPs are preinstalled in the DS3950. If the SFPs are not preinstalled in your DS3950 hardware, or if you need to replace them, use the information in this section to install the SFPs into the ports. After you install the SFP modules, you can use fiber-optic cables to connect the DS3950 to other Fibre Channel devices.
Page 77 Conversely, an 8 Gbps SFP that is plugged into a 4 Gbps-capable port will limit the speed of the port to a maximum of 4 Gbps. Attention: Carefully check the SFP IBM part number, option number, and FRU part number to identify its speed. There are no physical features that distinguish a 4 Gbps SFP from an 8 Gbps SFP.
Page 78: Removing Sfp Modules
2. Unlock the SFP module latch: v For SFP modules that contain plastic tabs, unlock the SFP module latch by pulling the plastic tab outward 10°, as shown in Figure 27 on page 51. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 79: Using Lc-Lc Fibre Channel Cables
An SFP module installed in a Fibre Channel switch port v An SFP module of the host bus adapter port v An SFP module installed in an IBM EXP395 or EXP810 storage expansion enclosure See Figure 29 on page 52 for an illustration of the LC-LC Fibre Channel cable.
Page 80: Connecting An Lc-Lc Cable To An Sfp Module
Figure 25 on page 50. Save the protective cap for future use. 3. Remove the two protective caps from one end of the LC-LC cable, as shown in Figure 30 on page 53. Save the protective caps for future use. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 81: Removing Fiber-Optic Cable Protective Caps
4. Carefully insert this end of the LC-LC cable into an SFP module that is installed in the DS3950. The cable connector is keyed so it will be inserted into the SFP module correctly. Holding the connector, push in the cable until it clicks into place, as shown in Figure 31.
Page 82: Removing An Lc-Lc Fibre Channel Cable
SFP module, as shown in Figure 33. Figure 33. Removing the LC-LC Fibre Channel cable 3. Replace the protective caps on the cable ends. 4. Replace the protective cap on the SFP module. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 83: Connecting Storage Expansion Enclosures To The Ds3950
DS3950 Drive Attach 33 - 64 feature option. If you need to connect 65 - 112 drives in a DS3950 configuration, you must purchase the DS3950 Drive Attach 65- 112 feature option in addition to the DS3950 Drive Attach 33 - 64 feature option.
Page 84: Overview Of Steps To Connect Storage Expansion Enclosures To A Storage Subsystem
RAID controllers can still access the storage expansion enclosures in the redundant drive channel pair. Note: In the following drive cabling figures, the DS3950 graphics are simplified to show only the drive ports of each controller.
Page 85: Ds3950 Storage Subsystem Drive Cabling Topologies
DS3950, make sure that the storage expansion enclosures are populated with at least two drives before you turn on the power. In addition, you must have at least two drives in the DS3950 storage subsystem before you power it on.
Page 86: Ds3950 Storage Subsystem Ports And
Important: The DS3950 supports the connection of a maximum of six storage expansion enclosures per redundant drive channel pair. The DS3950 supports one redundant drive channel pair.
Page 87: One Ds3950 And One Storage Expansion Enclosure
One DS3950 and one storage expansion enclosure If you are cabling one DS3950 storage subsystem to one storage expansion enclosure, Figure 36 shows the correct cabling topology. Note: Figure 36 illustrates the drive channel connections between the DS3950 and the storage expansion enclosures. Do not use Figure 36 as the cabling diagram.
Page 88: One Ds3950 And Two Storage Expansion Enclosures
One DS3950 and two storage expansion enclosures If you are cabling one DS3950 storage subsystem and two storage expansion enclosures, connect one storage expansion enclosure per controller drive port as shown in Figure 37. Figure 38 on page 61 shows that you can also connect two expansion enclosures together behind a single controller drive port.
Page 89: Incorrect Cabling Of One Ds3950 And Two Storage Expansion Enclosures
Important: Do not cable the DS3950 storage subsystem and two storage expansion enclosures as shown in Figure 38. A storage array with the incorrect storage topology might appear to be functional, but incorrect cabling can potentially have unpredictable results. Port 2, drive channel 1...
Page 90: One Ds3950 And Three Storage Expansion Enclosures
One DS3950 and three storage expansion enclosures If you are cabling one DS3950 storage subsystem and three storage expansion enclosures, Figure 39 shows the correct cabling topology. Port 2, drive channel 1 Storage Port 1, drive channel 1 subsystem Port 1, drive channel 2...
Page 91: One Ds3950 And Four Storage Expansion Enclosures
One DS3950 and four storage expansion enclosures If you are cabling one DS3950 storage subsystem and four storage expansion enclosures, Figure 40 shows the correct cabling topology. Port 2, drive channel 1 Storage Port 1, drive channel 1 subsystem Port 1, drive channel 2...
Page 92: One Ds3950 And Up To Six Storage Expansion Enclosures
One DS3950 and up to six storage expansion enclosures If you are cabling one DS3950 storage subsystem and up to six storage expansion enclosures, Figure 41 shows the correct cabling topology. Port 2, drive channel 1 Storage Port 1, drive channel 1...
Page 93 Figure 42 on page 66 shows a cabling topology that is incorrect because all six storage expansion enclosures are connected to a single drive port of the dual-ported drive channel in each controller. Chapter 3. Cabling the storage subsystem...
Page 94: One Ds3950 And Two Or More Storage Expansion Enclosures In A Mixed Configuration
1A 1B 1A 1B 1A 1B Figure 42. Cabling for one DS3950 and up to six storage expansion enclosures One DS3950 and two or more storage expansion enclosures in a mixed configuration A mixed configuration is a configuration in which you have more than one type of storage expansion enclosure.
Page 95: Ds3950 Storage Subsystem And Supported Storage Expansion Enclosure Drive Cabling Schemes
EXP395 EXP810 1A 1B 1A 1B Figure 43. Cabling for one DS3950 and two or more storage expansion enclosures in a mixed environment DS3950 storage subsystem and supported storage expansion enclosure drive cabling schemes The DS3950 supports only EXP395 and EXP810 storage expansion enclosures. To...
Page 96 Attach EXP810 to DS3950 Activation feature option. Contact your IBM marketing representative for more information. 12. To attach 33 - 64 additional drives to the DS3950, you must purchase the DS3950 Drive Attach 33 - 64 feature option. To attach 65 - 112 additional drives to the DS3950.
Page 97: Ds3950 Drive Ports Connected To Exp810 Esm Ports Labeled 1B
Storage subsystem Drive channel port Figure 44. DS3950 drive ports connected to EXP810 ESM ports labeled 1B 13. The DS3950 supports the intermix of SATA and Fibre Channel E-DDMs within the same drive enclosure. Chapter 3. Cabling the storage subsystem...
Page 98: One Ds3950 And One Exp395 Storage Expansion Enclosure
1. Connect either port 2 or port 1 of the dual-ported drive channel 1 in controller A on the DS3950 to port 1B on the left ESM of the EXP395. 2. Connect either port 1 or port 2 of the dual-ported drive channel 2 in controller B on the DS3950 to port 1B on the right ESM of the EXP395.
Page 99: One Ds3950 And Two Exp395 Storage Expansion Enclosures
DS3950 drive ports Perform the following steps to create the cabling scheme shown in Figure 46: 1. Connect port 2 of drive channel 1 on the DS3950 to port 1B on the left ESM in the EXP395 one. 2. Connect port 1B on the right ESM in EXP395 one to port 1 of drive channel 2 on the DS3950.
Page 100: One Ds3950 And Three Or More Exp395 Storage Expansion Enclosures
1A 1B three 1A 1B Figure 47. One DS3950 and three EXP395 storage expansion enclosures behind a pair of DS3950 drive ports Perform the following steps to create the cabling scheme shown in Figure 47: 1. Connect port 1A on the left ESM in EXP395 one to port 1B on the left ESM in EXP395 two.
Page 101 6. Connect port 1B on the right ESM in EXP395 two to port 1 of drive channel 2 on the DS3950. Figure 48 on page 74 shows the cabling scheme for one DS3950 storage subsystem and four EXP395 storage expansion enclosures behind both ports of a dual-ported drive channel.
Page 102: One Ds3950 And Four Exp395 Storage Expansion Enclosures Behind A Pair Of Ds3950 Drive Ports
1A 1B EXP395 four 1A 1B Figure 48. One DS3950 and four EXP395 storage expansion enclosures behind a pair of DS3950 drive ports Perform the following steps to create the cabling scheme shown in Figure 48: 1. Connect port 1A on the left ESM in EXP395 one to port 1B on the left ESM in EXP395 two.
Page 103 8. Connect port 1B on the right ESM in EXP395 four to port 2 of drive channel 2 on the DS3950. Figure 49 on page 76 shows the cabling scheme for one DS3950 storage subsystem and a maximum of six EXP395 storage expansion enclosures behind both ports of a dual-ported drive channel.
Page 104: One Ds3950 And A Maximum Of Six Exp395
1A 1B EXP395 five EXP395 six Figure 49. One DS3950 and a maximum of six EXP395 storage expansion enclosures behind a pair of DS3950 drive ports Perform the following steps to create the cabling scheme shown in Figure 49: IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 105 EXP395 three. 5. Connect port 1B on the left ESM in EXP395 one to port 2 of drive channel 1 on the DS3950. 6. Connect port 1B on the right ESM in EXP395 three to port 1 of drive channel 2 on the DS3950.
Page 106: Storage Expansion Enclosure Settings
00–77, it might be in conflict with the enclosure ID of one of the drive expansion enclosures that you are trying to attach to the DS3950. If this is the case, the amber ID Conflict LED on the storage expansion enclosure will light after you turn on the power to the storage subsystem.
Page 107: Configuring The Storage Subsystem
Serial cable adapter (RoHS) in “Parts listing” on page 164 for the FRU P/N.) 2. To minimize security risks, do not connect the DS3950 in a public LAN or public subnet. Use a local private network for the DS3950 and the management station Ethernet ports.
Page 108: Storage Subsystem Management Methods
Depending on the controller firmware version for your subsystem, refer to the following guides for more information about setting up in-band or out-of-band management connections: v IBM System Storage DS Storage Manager Version 10 Installation and Host Support Guide (for storage subsystems with controller firmware version earlier than 7.8x.xx.xx) v IBM System Storage DS Storage Manager Version 10.8 Installation and Host Support...
Page 109: Direct (Out-Of-Band) Management Method
DS3950 storage subsystem management software: v IBM System Storage DS Storage Manager Version 10 Installation and Host Support Guide (for storage subsystems with controller firmware version earlier than 7.8x.xx.xx)
Page 110: Connecting Hosts To The Ds3950 Using Fibre Channel Host Ports
RAID controllers A and B. Using the Fibre Channel switches, up to 512 hosts can be redundantly attached to the DS3950 storage subsystem in a Fibre Channel SAN fabric.
Page 111: Location Of Host Cables On Raid Controllers On The Ds3950
Figure 54 on page 84, or a maximum of four redundant host connections (not shown). With four redundant host connections, you can have a connection to a DS3950 Fibre Channel host bus adapter or to Fibre Channel switch ports.
Page 112: Fibre Channel And Iscsi Connections
85. Fibre Channel and iSCSI connections A DS3950 storage subsystem Fibre Channel connection consists of up to four host Fibre Channel loops and a redundant drive Fibre Channel loop. The host Fibre Channel loops provide the fibre path for host attachment. They can consist of Fibre Channel cables, SFPs, host bus adapters, Fibre Channel switches, and RAID controllers.
Page 113: Fibre Channel Host Loop Configurations
Channel storage subsystem through switches. The illustrations in the following sections show common host system configurations when you connect to the DS3950 Fibre Channel host ports. See “iSCSI configurations” on page 88 for more information about host connections through iSCSI.
Page 114: Examples Of Redundant Host Direct Attached Fibre Channel San Configurations
Figure 56. Example of a single SAN fabric configuration In Figure 57 on page 87, the Fibre Channel switches are connected together via the inter-switch link (ISL) to form a dual SAN fabric. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 115: Example Of A Dual San Fabric Configuration
Host system Host system with two host with two host adapters adapters Switch Switch DS Storage subsystem Figure 57. Example of a dual SAN fabric configuration In Figure 58, the Fibre Channel switches are not connected together. Each switch forms its own SAN fabric. Host system Host system with two host...
Page 116: Iscsi Configurations
Multiple-host, multiple-port, multiple-switch configuration, as shown in Figure 64 on page 92 Notes: 1. The DS3950 does not support direct connections from the host systems to the iSCSI ports on the storage subsystem. 2. The DS3950 does not support connections to both iSCSI and Fibre Channel ports from the same host system.
Page 117: Example Of A Single-Host, Multiple-Port Configuration
3. The following illustrations do not accurately represent the controller locations or port locations in the DS3950. The illustrations are for illustration purposes only. Figure 60 shows an example of a multiple port, single-host configuration. A system that uses multiple iSCSI ports can provide enhanced performance compared to a single-port iSCSI connection.
Page 118: Example Of Iscsi And Fibre Channel Hosts
Fibre iSCSI Channel ports ports Controller A Controller B Fibre iSCSI Channel Storage subsystem ports ports Figure 62. Example of iSCSI and Fibre Channel hosts, multiple-port configuration IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 119: Example Of An Incorrect Configuration
Figure 63 shows an incorrect configuration of a single host with both iSCSI and Fibre Channel connections. Important: Do not cable the storage subsystem and host systems as shown in Figure 63. A storage subsystem with the incorrect storage topology might appear to be functional, but incorrect cabling can potentially have unpredictable results.
Page 120: Installing The Storage Subsystem Configuration
4. Continue with “Powering on the storage subsystem” on page 95 for the initial startup of the storage subsystem. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 121: Chapter 4. Operating The Storage Subsystem
DS3950 storage configuration failure. Do not save these event log files only to a LUN in the DS3950 storage subsystem. 3. Use the Storage Subsystem Profile or DS3950 Profile to verify that the following firmware levels are at the latest versions supported for your DS3950 storage...
Page 122: Web Pages
Maintain an up-to-date storage subsystem profile for your DS3950 storage configuration. Save the profile to a server disk that will remain accessible in case of a DS3950 storage configuration failure. Do not save the profile only to a LUN in the DS3950 storage subsystem.
Page 123: Powering On The Storage Subsystem
70 seconds from when you turn off the power until you turn it on again. 2. If you are connecting a power cord to a DS3950 storage subsystem or storage expansion enclosure, turn off both of its power switches first. If the main...
Page 124 2. Make sure that all power cords are connected. See “Cabling the ac power supply” on page 92 for details, depending on the DS3950 configuration you purchased. Note: If the power cords are not connected, turn off both power switches on all modules in the configuration before connecting power cords or turning on the main circuit breakers.
Page 125: Installing The Ds Storage Manager Client
Depending on the controller firmware version for your subsystem, refer to the following guides for instructions to install the DS Storage Manager software: v IBM System Storage DS Storage Manager Version 10 Installation and Host Support Guide (for storage subsystems with controller firmware version earlier than 7.8x.xx.xx)
Page 126: Monitoring Status Through Software
DS Storage Manager guide for your operating system. Save the profile in a location other than the logical drives created for the DS3950. Always refer to the readme that is included with the DS3950 storage subsystem firmware package (whether the firmware is accessed by the Web or DVD) for any special requirements or restrictions that apply to that particular firmware version.
Page 127: Finding Controller, Storage Expansion Enclosure, And Drive Information
IBM System Storage DS Storage Manager Version 10 Installation and Host Support Guide (for storage subsystems with controller firmware version earlier than 7.8x.xx.xx) v IBM System Storage DS Storage Manager Version 10.8 Installation and Host Support Guide (for storage subsystems with controller firmware version 7.8x.xx.xx or later)
Page 128: Firmware Updates
ESM firmware upgrades. Save the DS3950 storage subsystem profile and all configuration (*.cfg) files to a server disk that will remain accessible in the event of a DS3950 storage configuration failure. Do not save these files only to a LUN in the DS3950 storage subsystem.
Page 129: Troubleshooting The Storage Subsystem
ESM firmware to be upgraded first to a particular version, or the controller firmware download might require the halting of I/Os to the DS3950 logical drives. Failure to observe the limitations, prerequisites, and dependencies in the readme file might result in a loss of data access.
Page 130: Checking The Leds
Blue LED on a CRU indicates that is safe to remove the component The DS3950 storage subsystem also has a blue Global Locate LED that is lit when the menu function is selected in the Subsystem Management window, causing the LOCATE command to be sent to the DS3950.
Page 131: Front Leds
Normal Status Problem Status Service Action Allowed (OK to Remove) Service Action Required (Fault) Direct Current Enabled Front LEDs This section describes the primary LEDs and controls on the front of the DS3950 storage subsystem. Drive Drive Global Global Global Link...
Page 132: Battery Unit Leds
The Global Power, Global Summary Fault, and Global Locate LEDs are general indicators for the entire DS3950 storage subsystem (or configuration, in the case of the Global Summary Fault). The Global Summary Fault LED turns on if a fault condition is detected in any component in the storage subsystem configuration, including all attached storage expansion enclosures.
Page 133: Controller Leds
Figure 68 and Figure 69 on page 106 show controller configurations of the two different DS3950 models that are available. For more information about DS3950 controller options and other components, see the “Parts listing” on page 164.
Page 134: Model 98H: Leds, Controls, And Connectors Of Controllers With Two Standard Fibre Channel Host Expansion Channels And Two Optional Iscsi Host Expansion Channels
See Table 18 on page 107. Host Channel Speed - L2 See Table 18 on page 107. Link Speed (Model 98H only) On - 1 Gbps Not applicable Off - 100 Mbps IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 135: Seven-Segment Numeric Display Leds
The host is operating at 2 Gbps. The drive channel is operating at 1 Gbps. Note: This pattern is not applicable in the drive port because the DS3950 does not support 1 Gbps Fibre Channel speed. The host is operating at 4 Gbps. The drive channel is operating at 2 Gbps.
Page 136: Numeric Display Leds
Persistent memory errors Suspended Persistent hardware errors Suspended Persistent data protection errors Suspended ACS failure Suspended Unsupported host card Suspended Submodel identifier not set or mismatched Suspended Memory configuration error IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 137: Powering Off The Storage Subsystem
(start-of-day) Powering off the storage subsystem The DS3950 is designed to run continuously. After you turn it on, do not turn it off. Turn off the power only in the following situations: v Instructions in a hardware or software procedure require that you turn off the power.
Page 138 3. Turn off power to other supporting devices (for example, management stations, Fibre Channel switches, or Ethernet switches). Note: You do not need to perform this step if you are servicing only the storage subsystem. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 139 Guru. This action reruns the Recovery Guru to make sure that the problem has been fixed. d. If the problem has not been fixed, contact your IBM service representative. Do not turn off power until all problems are corrected. 6. Check the Cache Active LED, and verify that it is off.
Page 140: Performing An Emergency Shutdown
10. Remove (unplug) all of the power cords from the DS3950 power supply connectors. 11. After you perform the necessary maintenance procedures, turn on the power using the procedure in “Turning on the storage subsystem”...
Page 141 4. Turn on the power to each device, based on the startup sequence. 5. Turn on any attached disconnect devices. 6. Turn on both of the power supply switches on the DS3950. The green LEDs on the front and the back of the DS3950 remain lit. If other amber Fault LEDs light, see “Solving problems”...
Page 142: Recovering From An Overheated Power Supply And Fan Unit
1. Remove the front cover. 2. If applicable, mute the alarm. 3. Did you use the procedure “Troubleshooting the storage subsystem ” on page 101 to identify an overheating problem? IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 143 CAUTION: The power switch on the power supply and fan unit does not turn off the electrical current supplied to the device. The DS3950 storage subsystem might also have more than one connection to power. To remove all electrical current from the device, ensure that all power cords are disconnected from the power supply and fan unit input connectors.
Page 144: Cache Memory And Cache Battery
13. Replace the bezel on the storage expansion enclosure, if applicable. Cache memory and cache battery Each RAID controller in the DS3950 storage subsystem contains either 1 GB or 2 GB of cache memory to store read and write operations. (Both RAID controllers in the DS3950 must have the same amount of cache memory.) The battery unit...
Page 145: Subsystem Cache Battery
If caching is enabled and the Cache Active LED never comes on during I/O activity, it indicates one of the following conditions: v The cache memory from either controller A or controller B has failed. v The cache sizes in controller A and controller B are not the same. v The battery has failed.
Page 146 Repair or disassemble Dispose of the battery as required by local ordinances or regulations. Replace the battery units in the DS3950 when they are identified as failing by the DS Storage Manager Subsystem Management window, or when the Battery LEDs or Battery Needs Attention LEDs light.
Page 147 interruption is caused if you remove the battery from the controller chassis, reset the power to the storage subsystem, or if a storage expansion enclosure or battery overheats. Data caching starts after the battery is charged to the programmed voltage level, which occurs when the storage subsystem power is first turned on, when a new battery is installed to replace a failed battery, or when the subsystem power is turned on after months of inactivity.
Page 148 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 149: Chapter 5. Replacing Components
CRU, battery unit, SFP module, and midplane. Attention: Always replace a failed component as soon as possible. The Recovery Guru menu function in the DS3950 storage subsystem identifies failed components. Handling static-sensitive devices Attention: Static electricity can damage electronic devices and your system. To avoid damage, keep static-sensitive devices in their static-protective packages until you are ready to install them.
Page 150: Replacing A Controller
DS3950 chassis. Note: The DS3950 storage subsystem controller FRU is not compatible with the DS4200 Express or DS4700 storage subsystem controller FRU. See the “Parts listing”...
Page 151 Yes – Go to step 4. v No – Another component might require attention before you can remove the controller. Use the Recovery Guru function in the DS3950 Subsystem Management window to identify and correct any additional failures. If there are none, proceed with step 4 to replace the controller.
Page 152: Unlocking The Sfp Module Latch - Plastic Variety
With the SFP latch in the unlocked position, extract the SFP module. v For SFP modules that contain plastic tabs, slide the SFP module out of the port. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 153: Removing A Controller From The Ds3950
Lever Figure 75. Removing a controller from the DS3950 10. If the new controller does not have the cache battery backup unit already installed, follow the instructions in “Replacing a battery unit” on page 146 to remove the cache backup battery from the existing controller unit and insert it into the new controller CRU.
Page 154 Manager client online help for instructions on bringing the controller online. If necessary, open the DS Storage Manager Subsystem Management window and place the controller on-line; select the off-line controller and click Advanced Recovery Place controller online. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 155: Installing Hard Disk Drives
Before you begin, ensure that you wear an anti-static wrist strap. To install a hot-swap Fibre Channel (FC), Serial Attached SCSI (SAS) hard disk drive or a Serial ATA (SATA) hard drive in an IBM DS3000, DS4000, or DS5000 storage subsystem: 1.
Page 156: Working With Hot-Swap E-Ddms
E-DDM CRU inserted. v E-DDM CRUs: – The DS3950 storage subsystem supports 4 Gbps Fibre Channel, FC-SAS, and SATA E-DDMs. The link rate setting speed must be set accordingly. See “Verifying the link rate setting” on page 138 for more information.
Page 157 Before you turn on the power to the DS3950 storage subsystem, it must be populated with at least two E-DDMs. If at least two E-DDMs are not installed in the DS3950, an insufficient load to the enclosure power supplies might cause them to intermittently appear as failed, falsely indicating the power supplies are bad.
Page 158: Installing Hot-Swap E-Ddms
Failure to do so might cause undesired events. v The DS3950 and EXP810 E-DDMs and FRUs are not compatible with the DS4200 Express and EXP420 EV-DDMs and FRUs. 1. Read the documentation that comes with the E-DDM.
Page 159: Hot-Swap E-Ddm Leds
Figure 79. Hot-swap E-DDM LEDs 3. Determine the bay into which you want to install the E-DDM. 4. Remove the blank tray by doing the following: a. Release the latch on the E-DDM CRU by pressing on the inside of the bottom of the tray handle.
Page 160: Replacing Hot-Swap E-Ddms
7. Check the E-DDM LEDs by doing the following: v When an E-DDM is ready for use, the green Activity LED lights and the amber Fault LED is off. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 161: Replacing Multiple E-Ddms
This method requires that you back up the data on the affected E-DDMs and then turn off the DS3950 storage subsystem. Attention: Turn off the DS3950 storage subsystem before you turn off the attached storage expansion enclosures. After replacing all the E-DDMs, you must reconfigure the new E-DDMs and restore data from backup.
Page 162: Replacing All E-Ddms At The Same Time
E-DDMs is lost when you replace the E-DDMs; therefore, you must back up all data that is currently on the E-DDMs. This procedure also requires you to turn off the storage expansion enclosures and the DS3950, which makes the storage subsystem (and any attached storage expansion enclosures) inaccessible to other users.
Page 163 2. Use the DS Storage Manager software to check the status of the DS3950. Correct any problems that are reported. Upgrade the storage subsystem controller to the level that supports the new E-DDMs, if required. 3. Perform a complete backup of the E-DDMs that you are replacing.
Page 164: Replacing The E-Ddms One At A Time
E-DDM. The data on the new E-DDM is still rebuilt, but the process takes longer for each E-DDM. Remember to reassign the hot spares when you are finished with this procedure. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 165 Attention: After you remove an E-DDM CRU, wait 70 seconds before replacing or reseating the E-DDM CRU to allow it to properly spin down. Failure to do so might cause undesired events. To replace the E-DDMs one at a time, perform the following steps: 1.
Page 166: Verifying The Link Rate Setting
E-DDMs. Verifying the link rate setting Important: Make sure that the link rate for the DS3950 is always set to 4 Gbps. The DS3950 supports only 4 Gbps FC drives. If a link rate problem is indicated, use the following procedure to verify the link rate setting.
Page 167: Expansion Enclosures
SAS drive interface protocol to a 4 Gbps FC interface protocol. Set the DS3950 enclosure speed to 4 Gbps when these SATA E-DDM CRUs are installed and connected to storage expansion enclosures running at 4 Gbps speed. The link rate setting speed must be set accordingly. See “Verifying the link rate setting”...
Page 168: Link Rate Leds
Gbps. The DS3950 supports only 4 Gbps FC drives. 3. Is the data transfer rate set correctly? Note: Make sure that the link rate for the DS3950 is always set to 4 Gbps. v Yes - Go to step 8 on page 141.
Page 169: Replacing An Ac Power Supply And Fan Unit
The power supply and fan unit is a component that includes both a 600-W power supply unit and two fans. The power supply and fan units provide power and cooling for the DS3950. The power supply and fan units are customer replaceable units (CRUs) and do not require preventive maintenance. Use only the supported power supply and fan units for your specific storage subsystem.
Page 170 If replacing it will take longer than 15 minutes, stop all I/O activity to the storage subsystem and turn off the power until you complete the replacement. Statement 8: IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 171 CAUTION: Never remove the cover on a power supply and fan unit or any part that has the following 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.
Page 172 Then gently push the front of the power supply and fan unit to make sure that it is fully seated. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 173: Replacing A Power Supply And Fan Unit
Attention: The left and right power supply and fan units are seated in the DS3950 chassis in opposite orientations. If you cannot fully insert the power supply and fan unit into the power supply and fan unit bay, flip it 180° and reinsert it.
Page 174: Replacing A Battery Unit
Repair or disassemble Dispose of the battery as required by local ordinances or regulations. Each RAID controller in the DS3950 storage subsystem contains a rechargeable battery unit that backs up data in cache to flash memory in the event of power failure.
Page 175: Removing And Replacing A Battery Unit From The Controller Chassis
5. To remove the failed battery unit from the RAID controller, press the orange battery unit latch toward the black battery handle to unlatch the battery from the DS3950 chassis and slowly pull the battery unit from the controller chassis using the handle, as shown in Figure 84.
Page 176: Replacing An Sfp Module
However, users should contact their municipal waste disposal facility prior to discarding any used battery in normal trash. Alternatively, you can return Lithium, Lithium Ion and Lithium Ion battery packs to IBM for recycling. In the United States, IBM has established a collection process for reuse, recycling, or proper disposal of used IBM Lithium, Lithium Ion and Lithium Ion battery packs.
Page 177 4. Put on antistatic protection. 5. Unpack the new SFP module. Verify that it is the same type of module you are replacing. If it is not, contact IBM Customer and Technical Support. Note: The speed of the SFP module determines the maximum operating speed of the Fibre Channel port in which the SFP is installed.
Page 178: Replacing An Sfp Module
Management window, and complete the recovery procedure. If the problem persists, contact IBM Support. v No - Go to step 17. 17. Use the DS Storage Manager client software to print a new storage subsystem profile. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 179: Replacing A Midplane
Perform the following steps to replace a midplane: 1. Complete the power-off sequence described in “Turning off the storage subsystem” on page 109 to make sure that the DS3950 storage subsystem is turned off before any attached storage expansion enclosures.
Page 180: Front Cage Frame Screw Locations
10. On the back of the DS3950, remove the four Phillips screws (two screws on each side) that hold the sides of the DS3950 chassis to the sides of the rails. 11. On the front of the DS3950, remove the four M5 screws (two screws on each side) on the DS3950 chassis that hold the DS3950 to the rails.
Page 181: Screws Holding The Top And Bottom Sides Of The Chassis To The Cage Frame
Note: The front cage frame might be tightly secured in the chassis. Mount the DS3950 chassis back in the rack using the four M5 screws to hold the DS3950 chassis in place while you pull on the blue handle to separate the front cage frame from the chassis.
Page 182 23. Turn on the power to the attached storage expansion enclosures. 24. Wait at least 3 minutes and then turn on the power to the DS3950 storage subsystem. Verify the status of the configuration using LEDs and the DS Storage Manager client program.
Page 183: Chapter 6. Hardware Maintenance
Use the indicator lights, the diagnostics and test information, the symptom-to-FRU index, and the connected server Problem Determination and Service Guide to diagnose problems. The PD maps found in the IBM System Storage DS4000 Problem Determination Guide provide you with additional diagnostic aids. Solving problems This section contains information to help you solve some of the problems you might have with your storage subsystem.
Page 184 DS4200 and Recovery Guru to verify that Express FRU is the correct controller FRU is inserted into a used. Replace with the correct DS3950 chassis. DS3950 controller FRU. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 185 Open the DS3950 Storage LED) fault (continued) Subsystem Management window and click the Recovery Guru to see problems in the DS3950 configuration. Some errors will cause the Global Summary Fault LED to be lit but will not cause any individual CRU Fault LEDs to be lit.
Page 186 AC power failure Check the main circuit breaker and ac outlet. Power supply Replace the power supply. failure Operating Cool down the environment. environment is too IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 187 (hard drive or bad cable) or indirectly related to the DS3950 storage subsystem configuration (such as a Fibre Channel host bus adapter failure in the host server or the Fibre...
Page 188 Hardware failure If any other LEDs are lit, replace the midplane. Contact an IBM technical support representative. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 189 Power supply Check the power supply Fault failure LED on the power supply. If the LED is lit, replace the failed CRU. Midplane failure Have the midplane replaced. Contact an IBM technical support representative. Chapter 6. Hardware maintenance...
Page 190 17. A controller has Replace the failed controller and failed in addition to ESM. the ESM failure in the drive channel that originates from the functioning controller. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 191 32 attached to the necessary feature drives, which includes 16 drives storage subsystem options to support in the DS3950 chassis and the 16 the storage more drives if an EXP395 storage expansion expansion enclosure is attached. enclosures.
Page 192: Parts Listing
(two ports per controller) AC power supply and fan unit, 600 W 59Y5502 Small Form-factor Pluggable transceiver, 8 49Y4123 Gbps AC power cord, 2.8 m 39M5081 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 193: Determining Basic Information Of Drive Frus
39M5377 Determining basic information of drive FRUs IBM might ship drive FRUs of higher capacity than that of the drive FRUs they replace. These new drives are programmed in manufacturing to give the same capacity as the drive FRUs being replaced.
Page 194: An Ibm Hologram Label Example
Properties pane in the Hardware tab of the Subsystem Management window v Storage Subsystem Profile window You can also use the IBM hologram label to determine the drive capacity and the drive FRU part number. A sample IBM hologram label is shown in the following figure.
Page 195: Appendix A. Records
Appendix A. Records Whenever you add options to your DS3950, be sure to update the information in this appendix. Accurate, up-to-date records make it easier to add other options and provide needed data whenever you contact your IBM technical support representative.
Page 196: Storage Subsystem And Controller Information Record
For a sample information record, see Table 25 on page 169. Table 24. Storage subsystem and controller information record Storage subsystem Management Controllers-Ethernet and IP Host-IP address and name method addresses, and host name host name IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 197: Sample Information Record
Sample information record Table 25 shows a sample information record. This network contains storage subsystems that are managed by using both the direct-management and host-agent-management method. Table 25. Sample information record Storage Management Controllers-Ethernet and IP Host-IP address subsystem name method addresses, and host name and host name...
Page 198: Installed Device Records
Attention: If you replace a hard disk drive in the wrong drive bay it might cause a loss of data. Table 26. Hard disk drive record Replaced hard disk drive serial Bay number Hard disk drive serial number number IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 199: Appendix B. Rack Mounting Templates
DS3950 to a rack. The locations for the M5 screws are highlighted in the templates. The DS3950 is 3 U high. Align the template with the rack at a U boundary. U boundaries are shown as horizontal dashed lines in the rack mounting templates.
Page 200: Front Rack Mounting Template
Rack Mounting Template Install first Install first Install first Install first Rail assembly Rail assembly (front right) (front left) Install second Install second Figure 90. Front rack mounting template IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 201: Rear Rack Mounting Template
REAR Rack Mounting Template Rail mounting guide Rail assembly Rail assembly (rear left) (rear right) ® Printed in the U.S.A Figure 91. Rear rack mounting template Appendix B. Rack mounting templates...
Page 202 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 203: Appendix C. Specifications For Non-Ibm Rack Installation
Certified products should have the NRTL logos or marks somewhere on the product or product label. However, proof of certification must be made available to IBM upon request. Proof consists of such items as copies of the NRTL license or certificate, a CB Certificate, a Letter of Authorization to apply the NRTL mark, the first few pages of the NRTL certification report, Listing in an NRTL publication, or a copy of the UL Yellow Card.
Page 204 Grounding method must comply with applicable country's electric code (such as NEC or CEC). Ground continuity can be verified by your IBM service personnel, after the installation is completed, and should be verified prior to the first service activity.
Page 205: Rack Specifications
10. The rack or cabinet configuration must comply with all IBM requirements for "safe to service" (contact your IBM Installation Planning Representative for assistance in determining if the environment is safe). There must be no unique maintenance procedures or tools required for service.
Page 206: Top View Of Non-Ibm Rack Specifications
44.45 mm (1.75 in.) apart on center). The front and rear mounting flanges in the rack or cabinet must be 719 mm (28.3 in.) apart and the internal width bounded by the mounting flanges at least 494 mm (19.45 in.), for the IBM ™...
Page 207: Rack Specifications Dimensions, Top Front
Rack Figure 94. Rack specifications dimensions, bottom front view 2. The rack or cabinet must be capable of supporting an average load of 15.9 kg (35 lb) of product weight per EIA unit. Appendix C. Specifications for non-IBM rack installation...
Page 208 You must use the IBM mounting rails that are shipped with the IBM product to install it in the rack. The mounting rails that ship with IBM products have been designed and tested to safely support the product during operation and service activities as well as to safely support the weight of your drawer or device.
Page 209 The perforations should yield at least 34 percent minimum open area per square inch. Appendix C. Specifications for non-IBM rack installation...
Page 210 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 211: Appendix D. Power Cords
The cord set should have the applicable safety approvals for the country in which the equipment will be installed. IBM power cords for a specific country or region are usually available only in that country or region.
Page 212 Sweden, Syrian Arab Republic, Tajikistan, Tahiti, Togo, Tunisia, Turkey, Turkmenistan, Ukraine, Upper Volta, Uzbekistan, Vanuatu, Vietnam, Wallis and Futuna, Yugoslavia (Federal Republic of), Zaire 39Y7918 9821 Power Cord (250v, Denmark 10A, 2.8m) IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 213 Table 27. IBM power cords (continued) IBM power cord Feature part number code Description Used in these countries or regions 39Y7923 9825 Power Cord (250v, Abu Dhabi, Bahrain, Botswana, 10A, 2.8m) Brunei Darussalam, Channel Islands, Cyprus, Dominica, Gambia, Ghana, Grenada, Guyana, Hong...
Page 214 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 215: Appendix E. Additional Ds3950 Documentation
For educational information about the DS3950 and other IBM System Storage products, go to http://ibmdsseriestraining.com/. The following tables present an overview of the IBM System Storage DS Storage Manager, storage subsystem, and storage expansion enclosure product libraries, as well as other related documents. Each table lists documents that are included in the libraries and what common tasks they address.
Page 216: Ds3950 Storage Subsystem Library
ATA Intermix Premium Feature Installation Overview DS3950 storage subsystem library Table 29 associates each document in the DS3950 storage subsystem library with its related common user tasks. Table 29. DS3950 storage subsystem document titles by user tasks Title User Tasks...
Page 217: Ds4800 Storage Subsystem Library
Diagnosis and Installation Installation Administration Maintenance IBM System Storage DS4800 Storage Subsystem Installation, User's and Maintenance Guide IBM System Storage Quick Start Guide, Quick Reference for the DS4800 IBM TotalStorage DS4800 Controller Cache Upgrade Kit Instructions Appendix E. Additional DS3950 documentation...
Page 218: Ds4700 Storage Subsystem Library
3, and 4 also for installing the EXP810 and EXP420 IBM TotalStorage DS4500 Storage Subsystem Installation, User's, and Maintenance Guide IBM TotalStorage DS4500 Storage Subsystem Cabling Instructions IBM TotalStorage DS4500 Rack Mounting Instructions IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 219: Ds4500 Storage Subsystem Library
Planning Hardware Software Configuration Operation and Diagnosis and Installation Installation Administration Maintenance IBM TotalStorage DS4500 Storage Subsystem Installation, User's, and Maintenance Guide IBM TotalStorage DS4500 Storage Subsystem Cabling Instructions IBM TotalStorage DS4500 Rack Mounting Instructions Appendix E. Additional DS3950 documentation...
Page 220: Ds4400 Storage Subsystem Library
Administration Maintenance IBM TotalStorage DS4400 Fibre Channel Storage Server User's Guide IBM TotalStorage DS4400 Fibre Channel Storage Server Installation and Support Guide IBM TotalStorage DS4400 Fibre Channel Cabling Instructions IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 221: Ds4300 Storage Subsystem Library
IBM TotalStorage DS4300 Rack Mounting Instructions IBM TotalStorage DS4300 Storage Subsystem Cabling Instructions IBM TotalStorage DS4300 SCU Base Upgrade Kit IBM TotalStorage DS4300 SCU Turbo Upgrade Kit IBM TotalStorage DS4300 Turbo Models 6LU/6LX Upgrade Kit Appendix E. Additional DS3950 documentation...
Page 222: Ds4200 Express Storage Subsystem Library
Installation, User's and Maintenance Guide IBM System Storage Quick Start Guide, Quick Reference for the DS4700 and DS4200, Sections 2, 3, and 4 also for installing the EXP810 and EXP420 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 223: Ds4100 Storage Subsystem Library
Table 36. DS4100 storage subsystem document titles by user tasks Title User Tasks Planning Hardware Software Configuration Operation and Diagnosis and Installation Installation Administration Maintenance IBM TotalStorage DS4100 Storage Server Installation, User's and Maintenance Guide IBM TotalStorage DS4100 Storage Server Cabling Guide Appendix E. Additional DS3950 documentation...
Page 224: Ds3950, Ds4000, And Ds5000 Storage Expansion Enclosure Documents
DS3950, DS4000, and DS5000 storage expansion enclosure documents Table 37 associates each of the following documents with its related common user tasks. Table 37. DS3950, DS4000, and DS5000 storage expansion enclosure document titles by user tasks Title User Tasks Planning...
Page 225: Ds5000 And Ds4000-Related Documents
Setup Guide Notes: 1. The IBM TotalStorage DS4000 Hardware Maintenance Manual does not contain maintenance information for the IBM System Storage DS4100, DS4200, DS4300, DS4500, DS4700, or DS4800 storage subsystems. You can find maintenance information for these products in the IBM System Storage DSx000 Storage Subsystem Installation, User's, and Maintenance Guide for the particular subsystem.
Page 226 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 227: Appendix F. Accessibility
Move keyboard focus to main menu bar and post first menu; use the arrow keys to navigate through the available options. Alt+F4 Close the management window. Alt+F6 Move keyboard focus between dialogs (non-modal) and between management windows. © Copyright IBM Corp. 2009, 2012...
Page 228 Move keyboard focus down one item in the list. Left arrow Move keyboard focus to the left. Right arrow Move keyboard focus to the right. Up arrow Move keyboard focus up one item in the list. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 229: Notices
Web sites. The materials at those Web sites are not part of the materials for this IBM product and use of those Web sites is at your own risk.
Page 230: Trademarks
All statements regarding IBM's future direction or intent are subject to change or withdrawal without notice, and represent goals and objectives only. All IBM prices shown are IBM's suggested retail prices, are current and are subject to change without notice. Dealer prices may vary.
Page 231: Important Notes
IBM makes no representations or warranties with respect to non-IBM products. Support (if any) for the non-IBM products is provided by the third party, not IBM. Some software might differ from its retail version (if available) and might not include user manuals or all program functionality.
Page 232: Documentation Format
In the request, be sure to include the publication part number and title. When you send information to IBM, you grant IBM a nonexclusive right to use or distribute the information in any way it believes appropriate without incurring any obligation to you.
Page 233: Industry Canada Class A Emission Compliance Statement
Properly shielded and grounded cables and connectors must be used in order to meet FCC emission limits. IBM is not responsible for any radio or television interference caused by using other than recommended cables and connectors or by unauthorized changes or modifications to this equipment.
Page 234 Klasse A ein. Um dieses sicherzustellen, sind die Geräte wie in den Handbüchern beschrieben zu installieren und zu betreiben. Des Weiteren dürfen auch nur von der IBM empfohlene Kabel angeschlossen werden. IBM übernimmt keine Verantwortung für die Einhaltung der Schutzanforderungen, wenn das Produkt ohne Zustimmung der IBM verändert bzw.
Page 235: Japan Voluntary Control Council For Interference (Vcci) Class A Statement
Japan Voluntary Control Council for Interference (VCCI) Class A Statement Translation: This is a Class A product based on the standard of the VCCI Council. If this equipment is used in a domestic environment, radio interference may occur, in which case, the user may be required to take corrective actions. Japan Electronics and Information Technology Industries Association (JEITA) Statement Japanese Electronics and Information Technology Industries Association (JEITA)
Page 236: People's Republic Of China Class A Electronic Emission Statement
Statement Taiwan Class A Electronic Emission Statement Taiwan Contact Information IBM Taiwan Product Service Contact Info: IBM Taiwan Corporation 3F, No 7, Song Ren Rd., Taipei Taiwan Tel: 0800-016-888 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 237: Glossary
Also called an I/O adapter, host adapter, or Fibre Channel adapter. If you do not find the term you are looking for, see the IBM Glossary of Computing Terms located at advanced technology (AT) bus architecture. A bus the following Web site: standard for IBM compatibles.
Page 238 Simple Network Management represents an entire array, including current and Protocol (SNMP) message. deferred paths to all logical unit numbers (LUNs) (hdisks on AIX). See also disk array controller. IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 239 A group of storage expansion enclosures are install a new ESM into an existing storage expansion connected to the DS3950 storage subsystems using a enclosure in a storage subsystem that supports drive channel from each controller. This pair of drive...
Page 240 8-bit data path, later expanded to 16 interface that presents a visual metaphor of a bits. The "Extended Industry Standard Architecture" real-world scene, often of a desktop, by combining IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 241 (2) A fixed-size portion of a logical volume. A integrated drive electronics (IDE). A disk drive logical partition is the same size as the physical interface based on the 16-bit IBM personal computer partitions in its volume group. Unless the logical Industry Standard Architecture (ISA) in which the...
Page 242 The PCI bus coexists in the PC with the Industry Standard Architecture (ISA) or Extended Industry NMS. See network management station. Standard Architecture (EISA) bus. ISA and EISA boards IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 243 See also arbitrated loop. RVSD. See recoverable virtual shared disk. program temporary fix (PTF). A temporary solution or bypass of a problem diagnosed by IBM in a current SAI. See Storage Array Identifier. unaltered release of the program.
Page 244 (SFP). An optical the host computer, and host-port nodes. The host port, host computer, and host group topological elements transceiver that is used to convert signals between IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 245 must be defined to grant access to host computers and Transmission Control Protocol (TCP). A host groups using logical drive-to-LUN mappings. communication protocol used in the Internet and in any network that follows the Internet Engineering Task striping. Splitting data to be written into equal blocks Force (IETF) standards for internetwork protocol.
Page 246 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 247: Index
DS3950 and three storage ac power requirements 24 expansion enclosures 62 data sheet 168 ac power supply one DS3950 and two or more storage devices, installing and replacing 121 cabling 92 expansion enclosures in a mixed DHCP server ac power supply and fan unit...
Page 248 3 guidelines, fiber-optic cables 47 planned shutdown, powering off 109 power cord use by country 183 power cords 183 power indicator light power supply and fan unit 13 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 249 16 rail installation 34 trademarks 202 replacing 148 site preparation 30 troubleshooting 155 SNMP traps 11 rack mounting template for DS3950 171 no power 114 specifications 19 RAID controller overheating problem 114 specifications, fiber-optic cables 47 cache battery 117...
Page 250 IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide...
Page 252 Part Number: 00Y5046 Printed in USA GA32-0953-03...

IBM DS3950 Installation, User's, And Maintenance Manual

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About this Document

Chapter 1. Introduction

Chapter 2. Installing the Storage Subsystem

Chapter 3. Cabling the Storage Subsystem

Chapter 4. Operating the Storage Subsystem

Chapter 5. Replacing Components

Chapter 6. Hardware Maintenance

Appendix A. Records

Appendix B. Rack Mounting Templates

Appendix C. Specifications for Non-IBM Rack Installation

Appendix D. Power Cords

Appendix E. Additional DS3950 Documentation

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Summary of Contents for IBM DS3950