Page 1 IBM System Storage DCS3700 Installation, User, and Maintenance Guide...
Page 3 IBM System Storage DCS3700 Installation, User, and Maintenance Guide...
Page 4 Before using this information and the product it supports, be sure to read the general information in the “Safety” on page xi and “Notices” on page 159 sections. First Edition (May 2011) Printed in the U.S.A. © Copyright IBM Corporation 2011. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
Page 5: Table Of Contents
Best practices guidelines Installing the drives . 37 DCS3700 components . Drive drawers . Chapter 3. Cabling the DCS3700 ..41 Disk Drive Modules (DDMs) . Cabling the DCS3700 Storage System . . 41 Controllers . Controller connectors (with SAS host port Controller cable connections .
Page 6 Fan assembly LEDs. . 76 Appendix C. Specifications for AC power-supply LEDs . . 77 non-IBM rack installation ..147 Drive drawer LEDs . . 78 General safety requirements for IBM products Disk drive LEDs .
Page 7 Korea Communications Commission (KCC) Taiwan Contact Information . 165 Class A Statement . . 164 People's Republic of China Class A Electronic Glossary ... . . 167 Emission Statement . .
Page 8 IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 9: Figures
Removing a fan assembly . . 121 hosts . . 59 Rear view of the storage expansion enclosure Example of DCS3700 connected to a single with the right fan assembly removed . 123 BladeCenter unit . . 60 © Copyright IBM Corp. 2011...
Page 10 . 150 Lock-out tumbler located above the drawer Rack specifications dimensions, bottom front guide . . 126 view . 151 DCS3700 storage subsystem enclosure parts list . . 137 viii IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 11 . 100 DCS3700 shipping carton dimensions . . 18 Troubleshooting. . 136 Temperature and humidity requirements for Parts listing (DCS3700 storage system and storage expansion enclosure when in storage expansion enclosure) . . 137 or in transit . 18 Storage subsystem and controller information DCS3700 altitude ranges .
Page 12 IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 13: Safety
The caution and danger statements that this document contains can be referenced in the multilingual ® ® Safety Information document that is provided with your IBM System Storage DCS3700 storage expansion enclosure. Each caution and danger statement is numbered for easy reference to the corresponding statements in the translated document.
Page 14 Class 1 Laser statement Class 1 Laser Product Laser Klasse 1 Laser Klass 1 Luokan 1 Laserlaite Apparell À Laser de Calsse 1 IEC 825-11993 CENELEC EN 60 825 Statement 4: IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 15 ≥ 18 kg (39.7 lb) ≥ 32 kg (70.5 lb) ≥ 55 kg (121.2 lb) CAUTION: Use safe practices when lifting. Statement 5: 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.
Page 16 Incorporate a readily available approved and rated disconnect device in the field wiring. CAUTION: This unit has more than one power source. To remove all power from the unit, all dc MAINS must be disconnected. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 17 Cable Warning: WARNING: Handling the cord on this product or cords associated with accessories sold with this product, will expose you to lead, a chemical known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. Safety...
Page 18 IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 19: About This Document
DCS3700, be sure to update the information in this table. Appendix B, “Rack mounting template,” on page 143 provides the rack mounting templates for installation of the DCS3700. If you want to tear out the templates from the document for use during installation, use these copies of the templates.
Page 20: Before You Call
You can solve many problems without outside assistance by following the troubleshooting procedures that IBM provides in the DS Storage Manager online help or in the documents that are provided with your system and software. The information that comes with your system also describes the diagnostic tests that you can perform.
Page 21: Essential Web Sites For Dcs3700 Support Information
For information about which products are supported by Support Line in your country or region, go to the following Web site: www.ibm.com/services/sl/products For more information about the IBM Support Line and other IBM services, go to the following Web sites: v www.ibm.com/services v www.ibm.com/planetwide...
Page 22 IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 23: Chapter 1. Introduction
DCS3700. Overview The DCS3700 is designed to meet the storage needs of the highly scalable, data streaming applications in high performance computing environments. The storage subsystem offers you data access and protection to meet your existing high performance computing storage requirements and prepare for the future.
Page 24: Fibre Channel Defined
Using a Fibre Channel arbitrated loop (FC-AL), more than 100 fibre-channel devices can be supported, compared to 15 small computer system interface (SCSI) devices. Operating system support For supported operating systems, see the latest System README file and the IBM DCS3700 product at the following Web site for additional host operating system support: www.ibm.com/systems/support/storage/config/ssic/index.jsp See “Finding Storage Manager software, controller firmware, and README files”...
Page 25: Dcs3700 Features
DCS3700 Features Table 1 summarizes the features of the DCS3700 storage subsystem and expansion enclosure. For a list of the operating specifications, such as weight, height, and heat output, see “Specifications” on page 17. Table 1. DCS3700 features General: Storage Subsystem:...
Page 26: Inventory Checklist
If any items are missing or damaged, contact your place of purchase. Notes: 1. The illustration might differ slightly from your hardware. 2. Depending on your DCS3700 order, your shipping box might contain additional materials that are not shown in the following illustration. assembly (2)
Page 27: Receiving Product Updates And Support Notifications
– Controllers (2) (for 1818 80C) v Handles (4), packaged in a smaller box inside the shipping box v DDMs (20 or more, depending on your DCS3700 order), packaged in a smaller box inside the shipping v Bezel (1) v Rack-mounting hardware kit (1), packaged in a smaller box inside the shipping box, including: –...
Page 28: Dcs3700 Components
– The storage subsystem logical drives and subsystems seem to be degraded. DCS3700 components The DCS3700 storage system directs and manages the I/O activity between a host and the drives in a RAID array. The DCS3700 expansion unit provides additional storage capacity to the storage system.
Page 29: Drive Drawers
(see Figure 2 on page 8). Each drive drawer can contain up to 12 disk drives (see Figure 3 on page 8). With the drive drawers fully populated, the DCS3700 can support up to 60 DDMs.
Page 30: Disk Drive Modules (Ddms)
There are no servicable parts in a DDM FRU. If it fails, it must be replaced in its entirety. When replacing a DDM FRU, be sure to order and install the correct DDM FRU. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 31: Controllers
– Two-port 6 Gbps SAS – Four-port 8 Gbps FC Attention: The DCS3700 storage system controllers must be identical to each other in hardware (host port adapter and cache size) and firmware. If you install a host port adapter in one controller, you must install an identical host port adapter in the other controller.
Page 32: Host Ports
Figure 5. DCS3700 connectors Host ports The DCS3700 storage system supports 6Gbps SAS on the base controller. The controller also contains an upgradable interface slot that can support an optional 6Gbps 2-port SAS host interface card or 8Gbps 4-port FC host interface card.
Page 33: Serial Port
The DCS3700 has two hot-swappable and redundant ESM units. The ESMs are located at the back of the DCS3700 expansion enclosure. The ESM in SBB A is called ESM A, while the ESM in SBB B is called ESM B. One ESM continues to operate if the other ESM fails.
Page 34: Enclosure Id
Figure 7 shows the location of the SAS IN and OUT ports on the ESMs. The DCS3700 ESMs support automatic ESM firmware synchronization. This function allows a new ESM with a different level of ESM firmware to be automatically synchronized with the ESM firmware version in the existing ESM in the enclosure.
Page 35: Power Supplies
If one power supply is turned off or malfunctions, the other power supply maintains electrical power to the storage expansion enclosure. Note: To preserve the optimal airflow, do not remove a failed power supply FRU from the DCS3700 chassis until you are ready to replace it with a new FRU.
Page 36 Fan unit A Fan unit B ID/Diag ID/Diag Figure 10. Fan assembly components Figure 11 shows fan assembly airflow through the storage expansion enclosure. Back Front Figure 11. Storage expansion enclosure airflow IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 37: Small Form-Factor Pluggable (Sfp) Modules
Software and firmware support code upgrades To enable support for the DCS3700, you must ensure that your system's software and firmware are at the latest levels. Table 2 shows the minimum supported software and firmware levels. Table 2. Minimum DCS3700 software and firmware levels...
Page 38: Determining Firmware Levels
Storage Manager Version 10 Installation and Host Support Guide for your operating system for instructions that describe how to install the DS Storage Manager host software. If you need further assistance, please contact your IBM reseller or IBM representative to find out which controller firmware to use for DCS3700 attachment.
Page 39: Specifications
Dimensions The DCS3700 conforms to the 19-inch rack standard. Table 3 shows the dimensions of the DCS3700, with all components installed including the bezel. Table 3. DCS3700 storage expansion enclosure dimensions...
Page 40: Shipping Dimensions
Temperature and humidity Table 7 lists the acceptable temperature and humidity ranges for the DCS3700 storage expansion enclosure when in storage or in transit. Note: Substantial deviations from the suggested operating range, in either direction, if sustained for extended periods of time, will expose the unit to greater risk of failure from external causes.
Page 41: Altitude
Airflow and heat dissipation Figure 13 shows the intended airflow for the DCS3700. 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 42: Acoustic Noise
Attention: The DCS3700 does not support 90-136V AC sources. It supports 200-240V AC sources only. Ensure that the AC input is appropriate for the DCS3700 before turning the power switches to the on position.
Page 43: Power And Site Wiring Requirements For Models With Power Supply And Fan Units
Power cords and receptacles: The DCS3700 ships with two jumper cords with IEC C19 plug on one end and IEC C14 plug on the other end that are used to connect to the rack PDU outlets. It is not shipped with the power cords that can be used to connect it directly to an electrical outlet in the destination country.
Page 44: Example Of Cold Aisle/Hot Aisle Rack
2440 mm between T42 racks center lines of hot and cold aisle back Hot aisle back T42 racks front Airflow Figure 14. Example of cold aisle/hot aisle rack configuration IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 45: Chapter 2. Installing The Dcs3700
Ordering the lift tool Note: The lift tool is required only when you install a DCS3700 or when you install or remove the DCS3700 from the cabinet. Make sure that the lift tool is available on location at the time of the installation.
Page 46: United States Locations
Return the lift tool to the parts center after you complete the installation or removal of the DCS3700. United States locations In the United States, call UPS Logistics at 800–528–6070 to order the lift tool or visit the MTS/Test Equipment Service Center Web site on the IBM intranet at http://pokgsa.ibm.com/~tstesc/public/ for...
Page 47: Handling Static-Sensitive Devices
4. Install disk drives in the DCS3700 storage enclosure. See “Installing the drives” on page 37. 5. If there are other DCS3700 storage enclosures to be installed in the same rack, repeat step 2 to step 4 for the other DCS3700 units.
Page 48: Preparing For Installation
The disk drive modules (DDMs) that come with the storage enclosure are packaged in a smaller box inside the shipping box. To unpack the shipping box, complete the following steps: 1. Remove the following items from the shipping box. Do not remove the DCS3700 from the shipping box at this time.
Page 49 2. Check the items in the preceding list to make sure that you received all the necessary parts. See the “Inventory list” on page 28 for the parts that are included with the storage enclosure. Chapter 2. Installing the DCS3700...
Page 50: Inventory List
If any items are missing or damaged, contact your place of purchase. Notes: 1. The illustration might differ slightly from your hardware. 2. Depending on your DCS3700 order, your shipping box might contain additional materials that are not shown in the following illustration. assembly (2)
Page 51: Tools
Handles (4), packaged in a smaller box inside the shipping box v DDMs (20 or more, depending on your DCS3700 order), packaged in a smaller box inside the shipping v Bezel (1) v Rack-mounting hardware kit (1), packaged in a smaller box inside the shipping box, including: –...
Page 52: Preparing The Rack
Important: Before you install the storage enclosure in a rack, keep in mind the following considerations: v When DCS3700 enclosures are to be plant or field integrated into the IBM racks, the rack must be configured with PDU power cords rated for 240 volt electrical service.
Page 53: Front Rack Mounting Template
The DCS3700 is 4U high. Align the template with the rack at a U boundary. U boundaries are shown as horizontal dashed lines in the rack mounting templates. Note: The mounting holes that are shown in the following templates are round. The holes in your rack might be round, square, or threaded.
Page 54: Rear Rack Mounting Template
Printed in the U.S.A Figure 16. Rear rack mounting template Before installing the DCS3700 in a rack, you must install the rails and rack-mounting hardware that come with your storage enclosure. The DCS3700 requires an Electronic Industries Association (EIA) 310-D Type A 19-inch rack cabinet.
Page 55 1. For proper weight distribution, install the support rails as low in the rack cabinet as possible. 2. The rack cabinet must have a minimum depth of 100 cm (40 in.). 3. If you are using a non-IBM rack or cabinet, review the information in Appendix C, “Specifications for non-IBM rack installation,” on page 147.
Page 56: Installing And Removing The Handles
Do not tighten the screws until the DCS3700 is installed in the rack (see 8 on page 37). 13. Continue with “Installing the DCS3700 into a rack” on page 35.
Page 57: Removing The Handles
3. Store the handles for future use. Installing the DCS3700 into a rack To install the storage enclosure, complete the following steps. Note: For more information about how to use a lift tool, see the documentation that came with the lift tool.
Page 58 For more information about the lift tool, see “Installation overview” on page 23. b. Before you move or relocate a rack that contains DCS3700 storage enclosures, see “Relocating the DCS3700” on page 65 for additional information.
Page 59: Installing The Drives
To maintain a uniform airflow across all drive drawers, the storage enclosure must be configured with a minimum of 20 drives, with four drives in the front row of each of the five drive drawers. Chapter 2. Installing the DCS3700...
Page 60: Dcs3700 Drive Drawer With Labeled Disk
Figure 17. DCS3700 drive drawer with labeled disk drives Notes: 1. The drive drawers are preinstalled in the DCS3700, but the DDMs are shipped separately from the drive drawers. 2. Make sure that you install the storage enclosure in the rack cabinet before you install DDMs in the storage enclosure.
Page 61 Push the bezel into the front of the unit until the latches on both sides of the bezel lock it in place. 10. Continue with “Cabling the DCS3700 Storage System” on page 41. Chapter 2. Installing the DCS3700...
Page 62 IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 63: Chapter 3. Cabling The Dcs3700
SAS Host port 1, 2, 3, and 4 The DCS3700 host ports are each a x4 multilane, 6 Gbps universal mini-SAS port. Connect a SAS cable from your host system SAS host bus adapter to a host port on each controller.
Page 64: Adapters)
SAS Host Ports 1 and 2 The DCS3700 SAS host ports are each a x4 multilane, 6 Gbps universal mini-SAS port. Connect a SAS cable from your host system SAS host bus adapter to a host port on each controller.
Page 65: Mini-Sas Cable
To connect a mini-SAS cable, insert the mini-SAS connector into a mini-SAS port. Make sure that it locks into place. Illustration showing how to connect a mini-SAS cable Figure 21. Connecting a mini-SAS cable Chapter 3. Cabling the DCS3700...
Page 66: Installing Sfp Modules
DSC3700 storage system to hosts with FC host bus adapters or FC switches. Important: 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 67: Sfp Module And Protective Cap
3. Remove the protective cap from the SFP port. Save the protective cap for future use. 4. Insert the SFP module into the host port until it clicks into place. See Figure 24 on page 46. Chapter 3. Cabling the DCS3700...
Page 68: Removing Sfp Modules
Figure 25. Unlocking the SFP module latch - plastic variety v For SFP modules that contain wire tabs, unlock the SFP module latch by pulling the wire latch outward 90°, as shown in Figure 26 on page 47. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 69: Handling Fibre-Optic Cables
(3 in.), or a radius less than 38 mm (1.5 in.) or wrap them around themselves. See Figure 27 on page 48. v Loop diameter of 76 mm (3 in.) and bend radius of 38 mm (1.5 in.) for fibre optic cable are IBM DCS3700 recommended minimums. Loops or bends smaller than this recommendation may cause damage to your fibre optic cables.
Page 70: Using Lc-Lc Fibre Channel Cables
The LC-LC Fibre Channel cable is a fibre-optic cable that you use to connect into one of the following devices: v An SFP module installed in an a DCS3700 fibre channel host interface adpater. v An SFP module installed in a fibre channel switch port or fibre channel host bus adapter port.
Page 71: Connecting An Lc-Lc Cable To An Sfp Module
Figure 29. Removing fibre-optic cable protective caps 4. Carefully insert this end of the LC-LC cable into an SFP module that is installed in the DCS3700. The cable connector is keyed to ensure it is inserted into the SFP module correctly. Holding the connector, push in the cable until it clicks into place, as shown in Figure 30 on page 50.
Page 72: Removing An Lc-Lc Fibre Channel Cable
5. Remove the two protective caps from the other end of the LC-LC cable. Save the protective caps for future use. 6. Connect this end of the LC-LC cable to an SFP module that is installed in a separate DCS3700 or other DS5000 storage expansion enclosures.
Page 73: Cabling The Dcs3700 Expansion Enclosure
Figure 33. ESM connectors SAS In connector 1 Connect a SAS cable to this connector and to either the drive expansion port on the DCS3700 controller or the SAS Out (↓) connector of another DCS3700 expansion enclosure. SAS In connector 2 Connect a SAS cable to this connector and to either the drive expansion port on the DCS3700 controller or the SAS Out (↓) connector of another DCS3700 expansion enclosure.
Page 74 Connect the other end of the SAS cable to one of the In (↑) SAS connectors on the ESM located in SBB slot A in the first DCS3700 expansion enclosure. 2. Connect the of the DCS3700 expansion enclosure to the next DCS3700 expansion enclosure in the chain: a.
Page 75: Single Expansion Enclosures
Figure 34. Single Expansion Enclosures Chapter 3. Cabling the DCS3700...
Page 76: Dual Expansion Enclosures
Figure 35. Dual Expansion Enclosures IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 77: Redundant Drive Channel Pair
Redundant drive channel pair Each storage controller on the DCS3700 storage system has a drive expansion channel that contains an x4 SAS port. The storage expansion enclosures that are connected to this connector form a drive channel. The maximum number of drives that can be installed in one drive channel is 180. In a dual-controller DCS3700, one drive channel from each controller combines to form a redundant drive-channel pair.
Page 78: Host-Agent (In-Band) Management
Figure 37 on page 57 shows the direct (out-of-band) management method. Note: Do not connect the DCS3700 storage subsystem Ethernet ports to a public network or public subnet. To minimize security risks, create a private network between the DCS3700 storage subsystem and the management station.
Page 79: Installing The Storage Subsystem Configuration
For a Fibre Channel attached host, attach a fibre channel cable to each HBA. Continue with“Connecting Fibre Channel hosts to the DCS3700” on page 60 to connect the other end of each cable to the controller. Connecting SAS hosts to the DCS3700 The DCS3700 can support up to 28 hosts when attached to the SAS Connectivity Module for IBM BladeCenter and up to four hosts in a direct attached host environment.
Page 80: Dual-Controller Direct-Attached Fibre Channel Connection To Two Hbas In The Same Host (Redundant Host Connection)
2. Create a redundant host connection by connecting a second SAS cable from a second SAS HBA (or a second SAS port in the HBA) to a host port on controller B in the DCS3700 storage system. The DCS3700 can support a maximum of two redundant host connections to a base DCS3700 storage system.
Page 81: Overview Of Installing An Ibm Bladecenter Configuration To Connect To A Dcs3700
The following illustration shows multiple redundant direct-attached SAS host connections. This configuration is also the configuration to use for a dual-node cluster configuration. Up to four hosts can be direct attached to the DCS3700 when the optional 6Gbps 2 port SAS host interface card is installed in each controller.
Page 82: Connecting Bladecenter Hosts To The Dcs3700
To connect a SAS expansion card that is installed in a blade server to the DCS3700, complete the following steps: 1. Connect a SAS cable from the SAS host connector on the DCS3700 storage system to any SAS port on an IBM BladeCenter SAS Connectivity Module that is installed in a BladeCenter unit (port 3 is recommended).
Page 83: Direct-Attached Dual-Controller Connections
Notes: 1. The DCS3700 ships with eight storage partitions by default. For additional storage partitions, purchase an optional Storage Partition Premium Feature upgrade. Contact your IBM reseller or marketing representative for more information. 2. Installation of the optional 8Gbps 4 port Fibre Channel host interface card is required in both controllers in order to support fibre channel host connections.
Page 84: Dual-Controller Direct-Attached Fibre Channel Connections To Multiple Hbas In Multiple Hosts
Figure 41. Dual-controller direct-attached Fibre Channel connection to two HBAs in the same host (redundant host connection) The following illustration shows multiple redundant direct-attached host connections. Figure 42. Dual-controller direct-attached Fibre Channel connections to multiple HBAs in multiple hosts IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 85: San Fabric Dual-Controller, Redundent Connections
In the following illustration, the Fibre Channel switches are not connected together through an ISL. Each switch forms its own SAN fabric. This configuration is also the configuration to use for a dual-node cluster configuration. Chapter 3. Cabling the DCS3700...
Page 86: Example Of A Dual Fibre Channel San Fabric
In the following illustration, the Fibre Channel switches are not connected together. Each switch forms its own SAN fabric. Figure 45. Example of two storage subsystems in a dual Fibre Channel SAN environment IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 87: Cabling The Power Supply
Relocating the DCS3700 Before you move an DCS3700 with populated hard drive drawers, either by itself or as part of the rack that it is mounted in, you must obtain a rack relocation kit. Follow the instructions provided with the...
Page 88 IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 89: Chapter 4. Operating The Dcs3700 Storage System And Expansion Enclosure
Attention: Save these event-log files to a server disk that will remain accessible in the event of a DCS3700 storage configuration failure. Do not save these event log files only to a LUN in the DCS3700 storage subsystem.
Page 90: Hardware Inspection
Maintain an up-to-date storage subsystem profile for the storage configuration. Save the profile to a server disk that will remain accessible in case of a DCS3700 storage configuration failure. Do not save the profile only to a LUN in the storage subsystem.
Page 91: Power-Supply Switches And Connectors For Ds3500 Dc Models
“Checking the LEDs” on page 73. b. Check all LEDs on each component in the DCS3700 storage system. Make sure that all the LEDs show normal status. For information about LED status, see “Checking the LEDs” on page 73 or “Solving problems”...
Page 92: Installing The Storage Manager Client
Storage Manager software. The document is in the Documentation folder on the IBM Support Software DVD. Use that document and the online help to configure the arrays, logical drives, and host partitions for the controllers. Follow the instructions in the operating-system documentation to make the new logical drives accessible to the operating system.
Page 93: Monitoring Status Through Software
Attention: Not following the software-recovery procedures can result in data loss. In addition, always replace a failing component as soon as possible to minimize additional failures that might occur, causing loss of data access. Chapter 4. Operating the DCS3700 storage system and expansion enclosure...
Page 94: Firmware Updates
Attention: Save the storage subsystem profile before you perform any controller or ESM firmware upgrades. Save the profile and all configuration (.cfg) files to a server disk that will remain accessible in the event of a DCS3700 storage configuration failure. Do not save these files only to a LUN in the storage subsystem.
Page 95: Checking The Leds
LEDs indicate a possible failure; a blue LED on a component indicates that it is safe to remove the component. The DCS3700 also has a blue system locator LED that is lit when the menu function is selected in the Subsystem Management window, causing the Locate command to be sent to the DCS3700.
Page 96: Controller Leds
OK to remove LED (blue) When this LED is lit, it indicates that it is safe to remove the controller from the DCS3700; no activity is taking place, and no data remains in the memory cache. The normal condition of this LED is off.
Page 97: Fibre Channel Host Port Adapter Leds
SAS link service action LED (amber) When this LED is lit, it indicates a problem with the SAS link that requires service action. The normal condition of this LED is off. Chapter 4. Operating the DCS3700 storage system and expansion enclosure...
Page 98: Esm Leds
When this amber LED is lit, it indicates that the ESM has failed. Power-on LED (green) When this green LED is lit, it indicates that the ESM is receiving power. Fan assembly LEDs This section describes the storage expansion enclosure fan assembly LEDs. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 99: Ac Power-Supply Leds
1 Standby power LED (green) Future use only. 2 DC power LED (green) When this green LED is lit, it indicates that the DCS3700 is turned on and is supplying 5-volt, 12-volt, and 48-volt dc power. 3 Service Action Allowed LED (blue) When this blue LED is lit, it indicates that it is safe to remove the power supply.
Page 100: Drive Drawer Leds
This section describes the service LEDs on the disk drives. The drive power/drive activity LEDs are located on the front of the drive drawer. See “Drive drawer LEDs” for more information. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 101: Seven-Segment Numeric Display Leds
Seven-segment numeric display LEDs The seven-segment numeric display LEDs provide information about enclosure identification and diagnostics. Figure 58 on page 80 shows the numeric display LEDs. Chapter 4. Operating the DCS3700 storage system and expansion enclosure...
Page 102: Numeric Display Leds
Table 18. Controller numeric display diagnostic codes Value Description Mismatched controller board ID. Missing interconnect canister. Persistent memory errors. Persistent hardware errors. Persistent data protection errors. ACS failure. Unsupported host card. Submodel identifier not set or mismatched. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 103: Cache Memory And Cache Battery
Incompatible module. Cache memory and cache battery Each storage controller in the DCS3700 storage subsystem contains 2 GB or 4 GB of cache memory to store read and write operations. In a dual controller configuration, both controllers in the DCS3700 must have the same amount of cache memory.
Page 104: Cache Memory
IBM part number for the battery unit available when you call. (C007) Replace the battery units in the DCS3700 storage system when they are identified as failing by the Storage Manager Subsystem Management window, or when the battery fault LEDs light. See “Controller LEDs”...
Page 105: Turning Off The Storage Subsystem
Attention: Write caching is suspended while a battery pack is either charging or self-testing. Turning off the storage subsystem The DCS3700 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 106 Run the Recovery Guru by clicking Recovery Guru in the toolbar in the Subsystem Management window. b. Complete the recovery procedure. If the Recovery Guru directs you to replace a failed component, use the individual LEDs to locate the failed component. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 107: Performing An Emergency Shutdown
LEDs to stop flashing. 7. Turn off the ac power switch on the rear of the DCS3700 storage system in the storage subsystem. Note: Until the power switch on each power supply is turned off, power remains turned on for both controllers.
Page 108: Recovering From An Overheated Power Supply
See “Powering on the DCS3700” on page 68 for details about the correct power-on sequence.
Page 109 No: Go to step 6 6. Turn off both power switches on the DCS3700 storage system (see Figure 9 on page 13 and then power-off all connected DCS3700 expansion enclosures. Wait 1 minute and then turn on power to all connected DCS3700 expansion enclosures.
Page 110 When the procedure is completed, select Recheck in the Recovery Guru. This runs the Recovery Guru again to make sure that the problem is corrected. d. If the problem remains, contact your IBM technical-support representative. 11. Replace the bezel on the storage enclosure, if applicable.
Page 111: Chapter 5. Replacing Components
Replacing components This chapter contains information about replacing components or installing optional devices in the DCS3700 storage system and DCS3700 expansion unit. Attention: To avoid overheating the storage enclosure and causing damage to its components, replace failed parts within 10 minutes, unless otherwise indicated. The Recovery Guru in the Storage Manager software identifies failed parts.
Page 112: Removing A Controller
91. Attention: Handle and install cables correctly to avoid degraded performance or loss of communication with devices. See Chapter 3 "Cabling the DCS3700" in this document for more information. 3. Disconnect all attached interface cables from the controller. Be sure to label each cable so that you can reconnect it correctly.
Page 113: Removing And Installing A Cover
Make sure that the power LEDs on both power supplies are lit. If the status of either of the power supplies is not Optimal, replace that power supply before you proceed with the controller replacement procedure. To replace a controller in a DCS3700 storage system, complete the following steps. Chapter 5. Replacing components...
Page 114 Attention: v If you are replacing a failed controller with a replacement controller from IBM Service, check to ensure that you have ordered the replacement controller that contains the same amount of cache memory that is installed in the failed controller. Also, transfer the cache backup battery and cache backup flash memory module to the replacement controller.
Page 115: Removing And Replacing A Controller
Pull the controller out of the bay. c. Place the controller on a level surface. Attention: The DCS3700 replacement controller ships with a temporary filler. Place the temporary filler in the controller chassis bay after the failed controller is removed, to maintain proper airflow and cooling.
Page 116: Cache Backup Flash Memory Device Location
Attention: Remove the temporary filler before you install the replacement controller. 16. Install the new controller. a. Make sure that the release levers on the controller are in the open position. b. Slide the controller into the bay until it stops. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 117: Removing And Disposing Of The System-Board Lithium Battery
(Needs Attention) status? v Yes: Click Recovery Guru in the Subsystem Management window toolbar, and complete the recovery procedure. If the problem remains, contact your IBM technical-support representative. v No: Go to step 24.
Page 118: Installing An Optional Host Interface Adapter
For information on disposal of batteries outside the United States, see http://www.ibm.com/ ibm/environment/products/batteryrecycle.shtml or contact your local waste disposal facility. In the United States, IBM has established a return process for reuse, recycling, or proper disposal of used batteries. For information on proper disposal of these batteries, contact IBM at 1-800-426-4333.
Page 119: Removing A Controller
Procedure 1. Read the "Safety" information and "Best practices" information found in the prolog and Chapter 1 of this document. 2. Turn off the storage subsystem. 3. Disconnect the cables that are connected to the controller. 4. Remove the controller from the chassis. Figure 64.
Page 120: Removing The Host Port Adapter Filler Panel
Slide the controller into the bay until it stops. c. Push the release levers to the closed position. 14. Reconnect the cables that you disconnected in step 3 on page 97. 15. Turn on the storage subsystem. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 121: Removing An Optional Host Interface Adapter
(Needs Attention) status? v Yes: Click Recovery Guru in the Subsystem Management window toolbar, and complete the recovery procedure. If the problem remains, contact your IBM technical-support representative. v No: Go to step 21.
Page 122: Working With Hot-Swap Ddms
DDM FRUs: – When adding DDM FRUs, if you are not installing all 60 DDM FRUs into the DCS3700, install the DDM FRUs in each drive drawer in the front row (slots 1, 4, 7, and 10). To maintain uniform airflow across all drive drawers, the storage expansion enclosure must be configured with a minimum of 20 drives, with four drives in the front row of each of the five drive drawers (slots 1, 4, 7, and 10).
Page 123: Installing Hot-Swap Hard Disk Drives
DDM is removed or installed. These DDMs are known as hot-swap DDMs. Installing hot-swap hard disk drives With the exception of the DCS3700 storage subsystem initial power up, you should add DDMs while the storage expansion enclosure is turned on and running. Complete the following steps to install hot-swap...
Page 124: Opening The Drive Drawer
Figure 70. Aligning the drive c. Lower the drive straight down; then, rotate the drive handle down until the drive snaps into place under the drive release lever. See Figure 71 on page 103. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 125: Replacing Hot-Swap Hard Disk Drives
Drive handle Release latch Figure 71. Locking the drive in place 7. Push the drive drawer all the way back into the storage expansion enclosure, closing the levers on each side of the drive drawer. 8. Install the bezel on the front of the storage expansion enclosure. See “Replacing the bezel” on page 118 for the steps to install the bezel.
Page 126: Replacing Multiple Ddms
The following are methods for upgrading DDMs: v Replacing all the DDMs at the same time This method requires that you back up the data on the affected DDMs and then turn off the DCS3700 storage subsystem. Attention: Turn off the DCS3700 storage system before you turn off the DCS3700 expansion enclosure.
Page 127: Replacing All Ddms At The Same Time
Compare the kit instructions with this procedure to determine if you need to modify this procedure. 2. Use the DS Storage Manager software to check the status of the DCS3700. Correct any problems that are reported. 3. Perform a complete backup of the DDMs that you are replacing.
Page 128 Turn off power to the DCS3700 storage system before you power off the DCS3700 expansion enclosure. Turn off both power supply switches on the back of the storage subsystem.
Page 129: Replacing The Drives One At A Time
9. Turn on the power to each device, based on the power-on sequence in step 8 on page 106. To turn on power to the DCS3700 storage system and expansion enclosures, turn on the power-supply switches on the back of the enclosures. You must turn on both power-supply switches to take advantage of the redundant power supplies.
Page 130 9. When reconstruction is finished on the new DDM, repeat step 5 through step 8 for each additional DDM that you want to install. 10. Use the DS Storage Manager software to configure the additional space on the new DDMs. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 131: Replacing An Ac Power Supply
Replacing an ac power supply About this task (L003) The power supplies are customer replaceable units (CRUs) and do not require preventive maintenance. Use only the supported power supplies for the storage subsystem. Each power supply has a built-in sensor that detects the following conditions: v Over-voltage v Over-current v Overheated power supply...
Page 132 7. Make sure that the Service Action Allowed LED is lit. Do not remove the power supply if the LED is off. For more information about the Service Action Allowed LED, see “Service Action Allowed LED” on page 89. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 133 DANGER When working on or around the system, observe the following precautions: Electrical voltage and current from power, telephone, and communication cables are hazardous. To avoid a shock hazard: v Connect power to this unit only with the provided power cord. Do not use the provided power cord for any other product.
Page 134: Replacing A Power Supply
Go to step 17. v The fault and ac power LEDs are lit but the dc power LED is off: The power supply is faulty. Turn off the power switch and contact your IBM technical-support representative for a replacement power supply.
Page 135: Replacing A Battery
Replacing a battery About this task The controller in the DCS3700 storage system contains a rechargeable battery backup unit that provides power to back up the cache memory onto flash memory in the event of a power failure. Each battery unit contains a sealed, rechargeable SMART lithium ion battery.
Page 136: Removing A Battery Unit From The Controller
Slide the battery unit out of the controller in the direction that is indicated by the arrow. c. Dispose of the battery as required by local ordinances or regulations. For more information, see the IBM Systems Environmental Notices and User's Guide on the support DVD that shipped with your unit.
Page 137: Replacing The Memory Cache Dimm
a. Slide the battery pack into the controller until the battery-pack connector pins are firmly seated in the controller battery connector. b. Tighten the captive fastener to secure the battery pack in place. 10. Install the cover (see “Removing and installing a cover” on page 91). 11.
Page 138: Removing The Dimm
Place the controller on a level surface. 3. Remove the cover (see “Removing and installing a cover” on page 91). 4. Remove the DIMM from the connector. Figure 77. Removing the DIMM from the controller IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 139: Installing The Dimm
a. Open the retaining clip on each end of the DIMM connector. b. Lift the DIMM out of the connector. 5. If the DIMM is functional, place the DIMM in a static-protective package until you are ready to install Installing the DIMM About this task Complete the following steps to install the DIMM in the controller: Procedure...
Page 140: Replacing The Bezel
1. Remove the bezel by completing the following steps: a. At the front of the storage expansion enclosure, remove the bezel by pressing inward on the latches (see Figure 80 on page 119). IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 141: Working With Environmental Service Modules
Latch Latch Figure 80. Removing the bezel b. Pull the bezel toward you to remove it from the enclosure. 2. Install the bezel by completing the following steps: a. Orient the bezel to the front of the storage expansion enclosure (see Figure 80). b.
Page 142: Replacing A Fan Assembly
7. Push the release levers to the closed position. 8. Connect the SAS cables to the ESM. 9. Turn on the power. 10. Go to http://www.ibm.com/servers/storage/support/ to check for ESM code updates. For more information, see the download instructions on page 1. Replacing a fan assembly Use this procedure to replace a failed fan assembly.
Page 143 Orient the fan assembly to the fan assembly bay and push the fan assembly all the way into the bay. Note: Although both fan assemblies (left and right) are identical, they are seated in the DCS3700 enclosure in opposite orientations. If the fan assembly cannot be fully inserted in the fan assembly bay, rotate it 180 degrees and reinsert it.
Page 144: Replacing A Drive Drawer
Use the Storage Manger Subsystem Management window to prepare the drive drawer for removal: 1) Open the Subsystem Management window for the DCS3700 storage subsystem. 2) Select Advanced -> Troubleshooting -> Prepare for Removal. A Prepare for Removal window displays.
Page 145: Rear View Of The Storage Expansion Enclosure
a. At the rear of the drive tray, remove the right fan assembly. See “Replacing a fan assembly” on page 120 for the steps to remove a fan assembly. Figure 83 shows the area with the fan assembly removed. Attention: If you are performing this procedure with the power turned on, you must reinstall the fan assembly within 5 minutes.
Page 146: Vertical Mounting Bracket That Connects To The
Remove the left cable chain. i. Reinstall the left fan assembly. See “Replacing a fan assembly” on page 120 for the steps to install a fan assembly. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 147: Drive Drawer Release Lever On The Side Of The Drive Drawer
Attention: If you are performing this procedure with the power turned on, you must reinstall the fan assemblies before you remove the drive drawer. Otherwise, the equipment could overheat. 5. Remove the drive drawer by completing the following steps: a. At the front of the storage expansion enclosure, pull the handles on the drive drawer to be removed until the drive drawer stops.
Page 148: Lock-Out Tumbler Located Above The Drawer
90 seconds or until it is recognized by the DS Storage Manager. See “Installing hot-swap hard disk drives” on page 101 for the steps to install the drives. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 149 12. The Service Action Allowed LED on the replaced drive drawer should be turned off automatically by the controllers. If it is not turned off automatically, open the script window for the DCS3700 storage subsystem, and execute the following SMcli script command: set enclosure [enclosureID] drawer [drawerID] serviceAllowedIndicator=off;...
Page 150 IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 151: Chapter 6. Hardware Maintenance
Use the indicator lights, the diagnostics and test information, the symptom-to-FRU index, and the connected server HMM to diagnose problems. The PD maps found in the IBM System Storage DS5000 Problem Determination Guide may provide you with additional diagnostic aids.
Page 152: Troubleshooting Problems In The Dcs3700 Storage Subsystem
LEDs to be lit. (Drive PFA exceeded or nominal temperature exceeded errors are examples.) Follow the corrective actions in the Recovery Guru window. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 153 Amber LED is lit storage controller Unsupported controller Controller configurations do not match. (continued) fault LED (service Check that host daughter card and cache action LED may memory are the same in both controllers. also be lit) Front panel Fibre Channel connection Check that the CRUs are properly installed.
Page 154 Check for and solve one of the following situations: All amber and green All drives v storage enclosures are not correctly connected to the DCS3700. LEDs are slowly v DCS3700 does not have the correct firmware version. (activity and fault...
Page 155 If any other LEDs are lit, replace the midplane. Contact your IBM technical-support representative. All drives Midplane failure Replace the DCS3700. Contact your IBM technical-support representative. The DCS3700 expansion Verify that the expansion enclosure is enclosure is connected to connected to a supported storage unsupported storage subsystem.
Page 156 1. Make sure that the SAS cables are undamaged and correctly connected. 2. Replace the SAS cables. ESM failure Contact your IBM technical support representative. Random errors Subsystem Midplane failure Replace the DCS3700. Contact your IBM technical-support representative. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 157 Replace the drive. See “Replacing problem with the ESM or components” on page 89 for more controller. information. Incorrect firmware Make sure that the DCS3700 has the version correct firmware version. In a dual-controller Replace the failed controller and ESM. See storage subsystem, one “Replacing components”...
Page 158: Parts Listing
ESM or the controller. Also, consider replacing the device at the other end of the SAS cable. Parts listing Figure 88 on page 137 and the following table provide a parts listing for the DCS3700. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 159: Dcs3700 Storage Subsystem Enclosure Parts
Figure 88. DCS3700 storage subsystem enclosure parts list Table 22. Parts listing (DCS3700 storage system and expansion enclosure) Index DCS3700 (MT 1818-80E, 80C) FRU P/N Rail kit 59Y5414 Fan assembly 90Y8598 Power supply, 1755w, AC 90Y8593 Controller with 2GB Cache DIMM, no host interface...
Page 160 Table 22. Parts listing (DCS3700 storage system and expansion enclosure) (continued) Index DCS3700 (MT 1818-80E, 80C) FRU P/N Chassis assembly, includes midplane and disk drive 90Y8591 drawers 8GB SFP module, short wave 49Y4123 PDU jumper cable Cable, Fibre Channel, 1M...
Page 161: Appendix A. Records
Whenever you add options to your storage expansion enclosure, 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. Identification numbers Record and retain the following information.
Page 162: Storage Subsystem And Controller Information Record
For a sample information record, see Table 24 on page 141. Table 23. Storage subsystem and controller information record Storage Management Controllers-Ethernet and IP addresses, and host Host-IP address and host subsystem name method name name IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 163: Sample Information Record
Sample information record Table 24 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 24. Sample information record Storage subsystem Management Controllers-Ethernet and IP addresses, and Host-IP address and name method host name...
Page 164: Installed Device Records
Attention: If you replace a hard disk drive in the wrong drive bay it might cause a loss of data. Table 25. Hard disk drive record Bay Number Hard disk drive serial number Replaced hard disk drive serial number IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 165: Appendix B. Rack Mounting Template
M5 screws when mounting the support rails and DCS3700 to a rack. The locations for the M5 screws are highlighted in the templates. The DCS3700 is 4 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 166: Front Rack Mounting Template
Install second Install first Install first Install second Install second FRONT Rack Mounting Template Rail assembly Rail assembly (front left) (front right) Install first Install first Figure 89. Front rack mounting template IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 167: Rear Rack Mounting Template
Rear bracket Rear bracket REAR Rack Mounting Template Rail assembly Rail assembly (rear left) (rear right) Rail mounting guide ® Printed in the U.S.A Figure 90. Rear rack mounting template Appendix B. Rack mounting template...
Page 168 IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 169: Appendix C. Specifications For Non-Ibm Rack Installation
The general safety requirements for IBM products installed in non-IBM racks are: 1. Any product or component that plugs into either an IBM power distribution unit or mains power (via a power cord), or uses any voltage over 42 V ac or 60 V dc (considered to be hazardous voltage) must be Safety Certified by a Nationally Recognized Test Laboratory (NRTL) for the country in which it will be installed.
Page 170 CSA- approved nonconductive step ladder (unless other arrangements have been made with the local IBM Service Branch Office). Products installed over 2.9 m (9 ft.) above the floor requires a Special Bid to be completed before they can be serviced by IBM service personnel.
Page 171: Rack Specifications
Rack specifications When installing a DCS3700 storage system or DCS3700 storage expansion enclosure into a non-IBM rack, follow the specifications below. 1. The rack or cabinet must meet the EIA Standard EIA-310-D for 19-inch racks published August 24, 1992. The EIA-310-D standard specifies internal dimensions, for example, the width of the rack opening (width of the chassis), the width of the module mounting flanges, the mounting hole spacing, and the depth of the mounting flanges.
Page 172: Rack Specifications Dimensions, Top Front
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 Storage System or eServer rails to fit in your rack or cabinet (see Figure 91 on page 149).
Page 173: Rack Specifications Dimensions, Bottom Front
Planning Representative to ensure a safe installation into your environment for rack mounting loads and floor loading. Weight for one DCS3700 fully loaded is 102.27 kg (255 lbs). The load per EIA unit that a standard EIA rack enclosure must be able to support is 25.49 kg (56.2 lbs) per unit.
Page 174 The perforations should yield at least 34 percent minimum open area per square inch. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 175: Appendix D. Power Cords
Canadian Standards Association (CSA). Attention: The DCS3700 does not support 90-136V AC sources. It supports 200-240V AC sources only. Ensure that the AC input is appropriate for the DCS3700 before turning the power switches to the on position.
Page 176: Ibm Power Cords
Argentina, Paraguay, Uruguay C19 to IRAM 2073 39M5346 9881 2.5m, 15A/250V, Korea (Democratic People’s Republic of), Korea (Republic of) C19 to KSC 8305 39M5535 9884 2.5m, 16A/250V, Brazil C19 to IEC 60083/75 IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 177 Table 26. IBM power cords (continued) IBM power cord part Feature number code Description Used in these countries or regions 39M5366 9885 2.5m, 20A/250V, Taiwan C19 to CNS 10917-3 Appendix D. Power cords...
Page 178 IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 179: Appendix E. Component Weights
Appendix E. Component weights Because of the size and weight of the DCS3700 storage enclosure, a lift tool and two trained service technicians are required to install the enclosure in a rack or remove the enclosure from a rack. If a lift tool is not available, you must reduce the weight of the storage enclosure before you lift it, as follows: v Remove two power supplies and make sure that the hard disk drive drawers are empty;...
Page 180 IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 181: Notices
Consult your local IBM representative for information on the products and services currently available in your area. Any reference to an IBM product, program, or service is not intended to state or imply that only that IBM product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe on any IBM intellectual property right may be used instead.
Page 182: Trademarks
If you are viewing this information in softcopy, the photographs and color illustrations may not appear. Trademarks IBM, the IBM logo, and ibm.com are trademarks or registered trademarks of International Business Machines Corporation in the United States, other countries, or both. If these and other IBM trademarked ® ™...
Page 183: Particulate Contamination
If IBM determines that the levels of particulates or gases in your environment have caused damage to the storage expansion enclosure, IBM may condition provision of repair or replacement of storage expansion enclosure or parts on implementation of appropriate remedial measures to mitigate such environmental contamination.
Page 184: 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 185: United Kingdom Telecommunications Safety Requirement
This product is in conformity with the protection requirements of EU Council Directive 2004/108/EC on the approximation of the laws of the Member States relating to electromagnetic compatibility. IBM cannot accept responsibility for any failure to satisfy the protection requirements resulting from a non-recommended modification of the product, including the fitting of non-IBM option cards.
Page 186: Japan Vcci Council Class A Statement
Please note that this equipment has obtained EMC registration for commercial use. In the event that it has been mistakenly sold or purchased, please exchange it for equipment certified for home use. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 187: People's Republic Of China Class A Electronic Emission Statement
People's Republic of China Class A Electronic Emission Statement Russia Electromagnetic Interference (EMI) Class A 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...
Page 188 IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 189: Glossary
AT-attached. Peripheral devices that are compatible adapter. A printed circuit assembly that transmits user with the original IBM AT computer standard in which data input/output (I/O) between the internal bus of signals on a 40-pin AT-attached (ATA) ribbon cable...
Page 190 A drive loop consists of one channel from each controller combined to form one pair of redundant DASD. See direct access storage device. drive channels or a redundant drive loop. Each drive IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 191 Drive loops are more Extended Industry Standard Architecture (EISA). A commonly referred to as drive channels. See drive bus standard for IBM compatibles that extends the channels. Industry Standard Architecture (ISA) bus architecture to 32 bits and allows more than one central processing DRAM.
Page 192 Also simultaneously. known as an Advanced Technology Attachment Interface (ATA). host bus adapter (HBA). An interface between the fibre-channel network and a workstation or server. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 193 Internet Protocol (IP). A protocol that routes data logical unit number (LUN). An identifier used on a through a network or interconnected networks. IP acts small computer system interface (SCSI) bus to as an intermediary between the higher protocol layers distinguish among up to eight devices (logical units) and the physical network.
Page 194 Web, intranets, or CD-ROM; and can be viewed with the Acrobat Reader, which is software from Adobe NVS. See nonvolatile storage. Systems that can be downloaded at no cost from the Adobe Systems home page. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 195 RVSD. See recoverable virtual shared disk. program temporary fix (PTF). A temporary solution SAI. See Storage Array Identifier. or bypass of a problem diagnosed by IBM in a current unaltered release of the program. SA Identifier. See Storage Array Identifier.
Page 196 A switch and the collection of devices access memory (DRAM), which must be regularly connected to it that are not in other groups. IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 197 switch zoning. See zoning. Presumably, the actual recipient is a software application running at the IP address and listening to synchronous write mode. In remote mirroring, an the port. option that requires the primary controller to wait for the acknowledgment of a write operation from the TSR program.
Page 198 IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 199: Index
LEDs 73 heat output 21 Drive drawer Collect All Support Data 6 host bus adapter 30 LEDs 78 Component weights for DCS3700 157 host interface adapter drive FRUs 100 components installing 96 drive installation 37 2 Gbps hard disk drives 7...
Page 200 153 removing an LC-LC cable 50 particulate contamination 161 static-protective package 45 patents 159 Small Form-Factor Pluggable modules power cord use by country 153 described 15 power cords 153 IBM System Storage DCS3700: Installation, User, and Maintenance Guide...
Page 202 Part Number: 90Y8588 Printed in USA (1P) P/N: 90Y8588...

IBM System Storage DCS3700 Installation, User's, And Maintenance Manual

Figures

Safety

About this Document

Chapter 1. Introduction

Chapter 2. Installing the DCS3700

Chapter 3. Cabling the DCS3700

Chapter 4. Operating the DCS3700 Storage System and Expansion Enclosure

Chapter 5. Replacing Components

Chapter 6. Hardware Maintenance

Appendix A. Records

Appendix B. Rack Mounting Template

Appendix C. Specifications for Non-IBM Rack Installation

Appendix D. Power Cords

Appendix E. Component Weights

Notices

Glossary

Index

Quick Links

Troubleshooting

Related Manuals for IBM System Storage DCS3700

Summary of Contents for IBM System Storage DCS3700