IBM DS5020 Manuale Utente

IB M System Storag e DS502 0 Storage Subsys te mInstallation, User’s, and Maintenance Guide

viii IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide

One DS5020 and one EXP520 storage expansion enclosureFigure 46 shows the cabling scheme for one DS5020 storage subsystem and oneEXP520 storage expansi

One DS5020 and two EXP520 storage expansion enclosuresFigure 47 shows the cabling scheme for one DS5020 storage subsystem and twoEXP520 storage expans

One DS5020 and three or more EXP520 storage expansionenclosuresTo connect three or more storage expansion enclosures to a DS5020 storagesubsystem, alt

4. Connect port 1 of drive channel 2 on the DS5020 to port 1B on the right ESM inEXP520 three.5. Connect port 1B on the left ESM in EXP520 two to port

Perform the following steps to create the cabling scheme shown in Figure 49:1. Connect port 1A on the left ESM in EXP520 one to port 1B on the left ES

5. Connect port 1A on the left ESM in EXP520 two to port 1B on the left ESM inEXP520 four.6. Connect port 1A on the right ESM in the EXP520 four to po

Perform the following steps to create the cabling scheme shown in Figure 50:1A1BDS5020Port 2, drive channel 11A1B1A1B1A1BPort 1, drive channel 1Port 1

1. Connect port 1A on the left ESM in EXP520 one to port 1B on the left ESM inEXP520 three.2. Connect port 1A on the right ESM in EXP520 three to port

Storage expansion enclosure settingsThis section provides information about storage expansion enclosure settings. Foradditional detail, refer to the I

Important:1. The serial interface ports are intended to be used by service technicians toperform diagnostic operations on the storage subsystem. Incor

Figures1. DS5020 hot-swap drive bays ...72. Back view; controllers with two standard Fibre Channel host expansion channels ...

Storage subsystem management methodsBefore you configure the storage subsystem, determine which method of storagesubsystem management you want to use.

Direct (out-of-band) management methodThis method uses Ethernet connections from a management station to eachcontroller. You must install at least one

Connecting hosts to the DS5020 using Fibre Channel host portsThe DS5020 supports redundant direct attached connections to up to four hosts. ToMake sur

the SFP modules of the host bus adapters. Figure 54 shows the location on theRAID controllers of the DS5020 storage subsystem where the host-systemcab

For other examples of redundant host configurations, see “Fibre Channel host loopconfigurations” on page 85.Fibre Channel and iSCSI connectionsA DS502

Fibre Channel host loop configurationsYou must determine how the host systems will connect to the storage subsystem.You can connect up to four host sy

In Figure 57, the Fibre Channel switches are connected together via the inter-switchlink (ISL) to form a single SAN fabric.In Figure 58, the Fibre Cha

Figure 60 shows an example of a two-cluster configuration.iSCSI configurationsThe DS5020 storage subsystem supports 1 Gbps iSCSI connectivity. You mus

Note: The minimum DS5020 configuration is two partitions. The maximum is 128partitions. Configuration upgrades are available as upgrade options. Conta

Figure 63 shows iSCSI and Fibre Channel hosts in a multiple-port configuration.GigabitEthernetswitchHost systemwith two iSCSIconnectorsDS5020Host syst

51. Ethernet and serial port locations on DS5020 ...7952. Host-agent (in-band) managed storage subsystems ...8053. Dir

Figure 64 shows an incorrect configuration of a single host with both iSCSI andFibre Channel connections.Important: Do not cable the storage subsystem

Installing the storage subsystem configurationUsing the information gathered in the previous sections, install the host systemsand host adapters.Notes

92 IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide

Chapter 4. Operating the storage subsystemThis chapter describes operating procedures for the DS5020.For information about the optimal operation of yo

Note: When you upgrade firmware, you must upgrade all client packagecomponents to the same release level. For example, if you are upgradingyour contro

v Make sure that all ESMs are properly seated.v Make sure that all drives are properly seated.v Make sure that all SFP modules are properly seated.v C

Note: If the power cords are not connected, turn off both power switches on allmodules in the configuration before connecting power cords or turning o

d. Review the status of the configuration components shown in the SubsystemManagement window by selecting the applicable component button for eachstor

http://www.ibm.com/systems/support/storage/diskBefore any planned system shutdown or after any system additions, removals, ormodifications (including

of a hard disk drive exceeding its PFAs), the Needs Attention LED does not turn on.Only the DS Storage Manager client can detect the failure.For examp

Tables1. Where to find DS5020 and DS4000-family installation and configuration procedures ...xx2. DS5020 weights ...203

http://www.ibm.com/systems/support/storage/diskAlways check the readme files that are included with the firmware packages for themost up-to-date infor

6. Check the indicator LEDs on the front and the back of the storage expansionenclosure.A green LED denotes a normal status; an amber LED denotes a ha

Table 12. Power supply and fan unit LEDsLED Normal Status Problem StatusPower supply and fan unitpowerOn OffService Action Allowed (OK toRemove)Off On

Table 13. Front LEDs and controlsLED Normal Status Problem StatusDrive Activity LED On (not blinking) - No data isbeing processedBlinking - Data is be

Table 14. Battery unit LEDsLED Normal Status Problem StatusService ActionAllowed (OK toRemove)Off OnService ActionRequired (Fault)Off OnBattery Chargi

HeartbeatLEDDiagnosticLEDCacheactiveLEDServiceactionrequiredLEDServiceactionallowedLEDHost channelspeed - L1 LEDDrive channelport bypass LEDDrive chan

Table 15. Rear controller LEDs, controls, and connectorsLED Normal Status Problem StatusService Action Allowed (OK toRemove)Off OnService Action Requi

Table 15. Rear controller LEDs, controls, and connectors (continued)LED Normal Status Problem StatusEthernet Link Activity On - link establishedOff -

When you turn on the power to the storage subsystem, the seven-segment LEDsshow 88 before the boot firmware starts to run. After the boot code starts,

Table 17. Numeric display diagnostic codes (continued)Value Controller State DescriptionLA Suspended ReservedLB Suspended Host card configuration erro

xii IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide

Statement 5:CAUTION:The power control button on the device and the power switch on the powersupply do not turn off the electrical current supplied to

Use the following procedure to turn off power to one or more storage subsystemsfor a planned shutdown. To turn off power for an unplanned shutdown, se

9. Turn off both power switches on the back of each storage expansion enclosurein the configuration.CAUTION:The power switch on the power supply and f

Risk of severe electrical shock – Never turn on the power to any equipment ifthere is evidence of fire, water, or structural damage. Doing so might ca

Recovering from an overheated power supply and fan unitEach storage subsystem contains two power supply and fan units. Each powersupply and fan unit c

v Yes - Go to step 4.v No - Perform the procedure “Troubleshooting the storage subsystem ” onpage 100 to verify that the power supplies have shut down

10. Check the status LEDs on the front and back of the storage subsystem.a. Note the status of the LEDs on the front and back of each module.A green L

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

Statement 2:CAUTION:When replacing the lithium battery, use only an equivalent type batteryrecommended by the manufacturer. If your system has a modul

interruption is caused if you remove the battery from the controller chassis, resetthe power to the storage subsystem, or if a storage expansion enclo

SafetyThe caution and danger statements that this document contains can be referencedin the multilingual IBM®Safety Information document that is provi

120 IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide

Chapter 5. Replacing componentsThis chapter contains information about replacing a controller, E-DDM CRU, powersupply and fan unit CRU, battery unit,

The Service Action Allowed status LED automatically turns on or off as conditionschange. Wait at least two minutes after you replace each component fo

5. Unpack the new controller. Save all packing materials in the event you need toreturn the new controller.6. Determine whether the replacement contro

a. Remove the LC-LC Fibre Channel cable from the SFP module. For moreinformation, see “Handling fiber-optic cables” on page 47.b. Unlock the SFP modul

125 shows the controller sliding from the storage subsystem chassis.10. If the new controller does not have the cache battery backup unit alreadyinsta

B controller bay to fully latch it into place. Do not force fit. The controller isdesigned to prevent it from being inserted into the chassis incorrec

v Blank trays: A storage subsystem without a full set of E-DDMs (16) containsblank trays in the unused drive bays. Before installing new E-DDMs, you m

v E-DDM CRUs are not interchangeable between the DS5020 and other DS4000storage subsystems.Table 18. Drive LED activityLED LED state DescriptionsActiv

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

Statement 1:DANGERElectrical current from power, telephone, and communication cables ishazardous.To avoid a shock hazard:v Do not connect or disconnec

Note: Make sure that the EMC gasket does not snag on the bezel.d. Push the tray handle down until it latches into place.Replacing hot-swap E-DDMsE-DDM

Attention: After you remove an E-DDM CRU, wait 70 seconds beforereplacing or reseating the E-DDM CRU to allow it to properly spin down. Failureto do s

v Which RAID level is used on the affected drives. (RAID 0 requires you to replaceall the E-DDMs at the same time.)v How much downtime is acceptable a

Set the E-DDMs on a dry, level surface away from magnetic fields. Save thepacking material and documentation in case you need to return them.5. Perfor

a. Turn on the power to the supporting devices (for example, Ethernetswitches and management stations) before you turn off power to thestorage subsyst

Read all precautionary notes, kit instructions, and other information. Kitinstructions often contain the most current information regarding theE-DDMs

Note: The Drive fault LEDs might flash intermittently while the E-DDMs spinup.v If the Drive activity LED is off, the E-DDM CRU might not be installed

CAUTION:Do not change the link rate setting while the storage subsystem is running.Changing the link rate setting while the storage subsystem is runni

If both link rate indicator LEDs are on, the data transfer rate is set for 4 Gbps.If one link rate indicator light is on, the data transfer rate is se

c. When the procedure is completed, rerun the Recovery Guru to make surethat the problem has been corrected by selecting Recheck in the RecoveryGuru.1

Statement 2:CAUTION:When replacing the lithium battery, use only an equivalent type batteryrecommended by the manufacturer. If your system has a modul

units in the unit will automatically shut down (an over-temperature condition). If thisoccurs, you must cool the unit and restart it. See “Restoring p

4. Unpack the new power supply and fan unit. Save all packing material in caseyou need to return the failed power supply and fan unit CRU.Note: The ne

DANGERElectrical current from power, telephone, and communication cables ishazardous.To avoid a shock hazard:v Do not connect or disconnect any cables

Attention: The left and right power supply and fan units are seated in theDS5020 chassis in opposite orientations. If you cannot fully insert the powe

v Yes - Select the Recovery Guru toolbar button in the SubsystemManagement window and complete the recovery procedure. If a problem isstill indicated,

1. Use the DS Storage Manager client software to print a storage subsystemprofile.2. Locate the RAID controller that contains the failed battery unit.

Attention: This product contains a sealed Lithium Ion battery. DischargedLithium and Lithium Ion batteries are currently designated to be disposed of

DANGERSome laser products contain an embedded Class 3A or Class 3B laserdiode. Note the following.Laser radiation when open. Do not stare into the bea

Attention: Handle and install fiber-optic cables properly to avoid degradedperformance or loss of communications with devices. For specific handlinggu

Replacing a midplaneStatement 5:CAUTION:The power control button on the device and the power switch on the powersupply do not turn off the electrical

Class 1 Laser ProductLaser Klasse 1Laser Klass 1Luokan 1 LaserlaiteApparell Laser de Calsse 1ÀIEC 825-11993 CENELEC EN 60 825Statement 4:≥ 18 kg (39.7

a. Squeeze the latch and pull the lever open 90° (so that the lever ishorizontal) to release the power supply and fan unit from the latch. Thelatch is

≥ 18 kg (39.7 lb) ≥ 32 kg (70.5 lb) ≥ 55 kg (121.2 lb)CAUTION:Use safe practices when lifting.Pull the chassis outward from the front of the rack and

15. Insert the new front cage plane/midplane by aligning it with the storagesubsystem front opening and slowly sliding it into the storage subsystemch

Chapter 6. Hardware maintenanceThis chapter contains information to help you solve some of the simpler problemsthat you might have with your storage s

Table 20. Symptom-to-FRU indexProblemindicator Component Possible cause Possible solutionsAmber LED is lit Drive CRU(Drive FaultLED)Note: Thegreen Dri

Table 20. Symptom-to-FRU index (continued)Problemindicator Component Possible cause Possible solutionsAmber LED is lit(continued)Front panel(GlobalSum

Table 20. Symptom-to-FRU index (continued)Problemindicator Component Possible cause Possible solutionsAll green LEDsare offAll CRUs Subsystem power is

Table 20. Symptom-to-FRU index (continued)Problemindicator Component Possible cause Possible solutionsOne or moregreen LEDs areoffPower supplyCRUsPowe

Table 20. Symptom-to-FRU index (continued)Problemindicator Component Possible cause Possible solutionsIntermittent orsporadic powerloss to the storage

Table 20. Symptom-to-FRU index (continued)Problemindicator Component Possible cause Possible solutionsUnable to accessdrivesDrives andFibre Channelloo

Statement 8:CAUTION:Never remove the cover on a power supply or any part that has the followinglabel attached.Hazardous voltage, current, and energy l

Table 20. Symptom-to-FRU index (continued)Problemindicator Component Possible cause Possible solutionsStorage expansionenclosures are notattached to t

Table 21. Parts listing (DS5020 storage subsystem)Index DS5020 storage subsystem CRU P/N1 Rail kit 41Y51522 Battery 59Y51513 Controller, 1 GB memory,

Table 21. Parts listing (DS5020 storage subsystem) (continued)Index DS5020 storage subsystem CRU P/N8 E-DDM, 4 Gbps FC, 146.8 GB, 15,000 RPMdrive modu

Appendix A. RecordsWhenever you add options to your DS5020, be sure to update the information inthis appendix. Accurate, up-to-date records make it ea

Storage subsystem and controller information recordTable 22 provides a data sheet for recording storage subsystem names,management types, Ethernet har

Sample information recordTable 23 shows a sample information record. This network contains storagesubsystems that are managed by using both the direct

Installed device recordsUse the following table to record the number of the hard disk drives that youreplaced and the corresponding bay number.Attenti

Appendix B. Rack mounting templatesThis appendix provides duplicate copies of the rack mounting templates. If you wantto tear out the templates from t

Figure 89. Front rack mounting template168 IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide

®3U3U2U2U1U1U0U0URail assembly(Rear Left)Rail assembly(Rear right)Printed in the U.S.AREARRack MountingTemplateDS5020Rail mounting guideFigure 90. Rea

Cable Warning:WARNING: Handling the cord on this product or cords associated with accessoriessold with this product, will expose you to lead, a chemic

170 IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide

Appendix C. Specifications for non-IBM rack installationThe following instructions provide safety requirements and rack specifications forinstalling D

3. There must be an accessible and unambiguous disconnect device for eachproduct in the rack, including any power distribution unit.A disconnect devic

There must be no unique maintenance procedures or tools required forservice.11. Elevated service installations, where the product(s) to be serviced ar

Top view of non-IBM rack specifications dimensionsThe vertical distance between mounting holes must consist of sets of threeholes spaced (from bottom

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.Top Front of RackEIA Hole Spaci

For example, a four EIA drawer will have a maximum drawer weight of 63.6 kg(140 lb.).3. AC or dc power drawers need to be support based on equipment p

inlet temperature as specified in the server specifications. The perforationsshould yield at least 34 percent minimum open area per square inch.Append

178 IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide

Appendix D. Power cordsFor your safety, IBM provides a power cord with a grounded attachment plug to usewith this IBM product. To avoid electrical sho

About this documentThis document provides instructions for installing and customizing the configurationof your IBM System Storage DS5020 storage subsy

Table 25. IBM power cords (continued)IBM power cordpart numberFeaturecode DescriptionUsed in these countries orregions39Y7917 9820 Power Cord (250v,10

Table 25. IBM power cords (continued)IBM power cordpart numberFeaturecode DescriptionUsed in these countries orregions39Y7923 9825 Power Cord (250v,10

182 IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide

Appendix E. Additional DS5020 documentationFor educational information about the DS5020 and other IBM System Storageproducts, go to http://ibmdsseries

Table 26. DS Storage Manager Version 10 titles by user tasks (continued)Title User tasksPlanning HardwareinstallationSoftwareinstallationConfiguration

DS4800 storage subsystem libraryTable 28 associates each document in the DS4800 storage subsystem library withits related common user tasks.Table 28.

DS4700 storage subsystem libraryTable 29 associates each document in the DS4700 storage subsystem library withits related common user tasks.Table 29.

DS4500 storage subsystem libraryTable 30 associates each document in the DS4500 (previously FAStT900) storagesubsystem library with its related common

DS4400 storage subsystem libraryTable 31 associates each document in the DS4400 (previously FAStT700) storagesubsystem library with its related common

DS4300 storage subsystem libraryTable 32 associates each document in the DS4300 (previously FAStT600) storagesubsystem library with its related common

DS5020 and DS4000-family storage subsystem installation tasks -General overviewFor educational information about the DS5020 and other IBM System Stora

DS4200 Express storage subsystem libraryTable 33 associates each document in the DS4200 Express storage subsystemlibrary with its related common user

DS4100 Storage subsystem libraryTable 34 associates each document in the DS4100 (previously FAStT100) storagesubsystem library with its related common

DS5000 and DS4000 storage expansion enclosure documentsTable 35 associates each of the following documents with its related common usertasks.Table 35.

Other DS5000 and DS4000-related documentsTable 36 associates each of the following documents with its related common usertasks.Table 36. DS5000 and DS

194 IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide

Appendix F. AccessibilityThis section provides information about alternate keyboard navigation, which is aDS Storage Manager accessibility feature. Ac

Table 37. DS Storage Manager alternate keyboard operations (continued)Short cut ActionAlt+ underlined letter Access menu items, buttons, and other int

NoticesThis information was developed for products and services offered in the U.S.A.IBM may not offer the products, services, or features discussed i

Adobe and PostScript are either registered trademarks or trademarks of AdobeSystems Incorporated in the United States and/or other countries.Cell Broa

Some software might differ from its retail version (if available) and might not includeuser manuals or all program functionality.Particulate contamina

Table 1. Where to find DS5020 and DS4000-family installation and configurationprocedures (continued)Installation task Where to find information or pro

205/A0153039 E. Cornwallis RoadP.O. Box 12195Research Triangle Park, North Carolina 27709-2195U.S.A.In the request, be sure to include the publication

European Union EMC Directive conformance statementThis product is in conformity with the protection requirements of EU CouncilDirective 2004/108/EC on

IBM verändert bzw. wenn Erweiterungskomponenten von Fremdherstellern ohneEmpfehlung der IBM gesteckt/eingebaut werden.EN 55022 Klasse A Geräte müssen

GlossaryThis glossary provides definitions for theterminology and abbreviations used in IBMSystem Storage DS5000 and DS4000publications.If you do not

Standard Architecture (ISA) system bus on the IBM PCAT computer. Equivalent to integrated drive electronics(IDE).auto-volume transfer/auto-disk transf

interface (FC-SCSI) hardware path ID. It is required tobe the same for all SCSI targets logically connected toan Fibre Channel adapter.drive channels.

Fibre Channel Protocol (FCP) for small computersystem interface (SCSI). A high-level fibre-channelmapping layer (FC-4) that uses lower-level fibre-cha

(EISA) further expanded the data path to 32 bits. Seealso Extended Industry Standard Architecture.initial program load (IPL). The initialization proce

logical drive data to verify that it can be accessed, andoptionally scans the logical drive redundancyinformation.medium access control (MAC). In loca

Standard Architecture (EISA) bus. ISA and EISA boardsplug into an IA or EISA slot, while high-speed PCIcontrollers plug into a PCI slot. See also Indu

Table 1. Where to find DS5020 and DS4000-family installation and configurationprocedures (continued)Installation task Where to find information or pro

serial ATA. The standard for a high-speed alternativeto small computer system interface (SCSI) hard drives.The SATA-1 standard is equivalent in perfor

elements must be defined to grant access to hostcomputers and host groups using logical drive-to-LUNmappings.striping. Splitting data to be written in

212 IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide

IndexAa hot-swap E-DDMreplacing 130a hot-swap hard disk drivereplacing 130about this document xixac power cords and receptacles 24ac power recovery 23

Ddata sheet 164devices, installing and replacing 121DHCP serversample network 11diagnostic interface port 79direct management method 81document organi

Health Check process 93heat dissipation 21heat output 24host adapter, connecting to RAID controller 82host-agent management method 80hot swapdrive bay

power supply and fan units (ac)description 13power-fan canisterrecovering from shutdown 114power, restoring after an emergency 112powering offfor plan

storage subsystem configurationsaving 6storage subsystem configuration, installing 91storage subsystem profilesaving 6submodel ID 99support code upgra

218 IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide

Table 1. Where to find DS5020 and DS4000-family installation and configurationprocedures (continued)Installation task Where to find information or pro

Part Number: 49Y0289Printed in USA(1P) P/N: 49Y0289

Table 1. Where to find DS5020 and DS4000-family installation and configurationprocedures (continued)Installation task Where to find information or pro

2. Click the link for your storage subsystem (for example, DS5020).3. When the subsystem support page opens, click the Download tab.4. Under the Downl

Premium feature activationActivate a DS5020 or DS4000 premium feature by using the online tool:http://www-912.ibm.com/PremiumFeatures/jsp/keyInput.jsp

Fire suppression systemsA fire suppression system is the responsibility of the customer. The customer’s owninsurance underwriter, local fire marshal,

IB M System Storag e DS502 0 Storage Subsys te mInstallation, User’s, and Maintenance Guide

xxviii IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide

Chapter 1. IntroductionThis chapter describes the operating specifications, features, and components forthe IBM System Storage DS5020 Storage Subsyste

storage management, copy service options, and optional advanced disasterrecovery functions are available for the DS5020, including FlashCopy®,VolumeCo

Contact your IBM sales representative or reseller for more information about thevarious DS5020 and options.Operating system supportFor supported opera

– RAID controllers (2)– AC power supply and fan units (2)– Fiber-optic cables (2)– Battery units (2)– Power cables (2 rack jumper line cords)– Diagnos

– Box ID labels (used to label the enclosure IDs on the front of the DS5020)Note: If you ordered additional premium features or entitlements, the prem

Note: Do not overload the circuits that power your storage subsystem andstorage expansion enclosures. Use additional pairs of ac powerdistribution uni

Enhanced Disk Drive Modules (E-DDMs)The hot-swap drive bays that are accessible from the front of your storagesubsystem are shown in Figure 1.The DS50

Using non-supported E-DDM options or FRUs will result in the E-DDM being lockedout by the DS5020 controller firmware and might also damage the drive c

Connectors, switch, and enclosure IDThe controllers support fiber-optic interfaces for both the host channel and drivechannel ports. The controllers a

Note:Before using this information and the product it supports, be sure to read the general information in “Safety” on page xiii and“Notices” on page

Controller BController AFibre Channelhost channelsEthernetportsSerialportEnclosure IDDual-porteddrive channelEnclosure IDEthernetportsSerialportDual-p

Setting up IP addresses for DS5020 storage controllersAfter you install DS Storage Manager (as described in the DS Storage ManagerInstallation and Sup

2. Start the DS Storage Manager client software. The Enterprise Managementwindow opens.3. Add the DS5020 subsystem to the Enterprise Management domain

6. In the Change Network Configuration window, click on the Controller A andController B tabs and type the new TCP/IP addresses in their applicable fi

Figure 6 shows a power supply and fan unit and the airflow through the storagesubsystem.Battery unitsStatement 2:Figure 6. Power supply and fan unit a

CAUTION:When replacing the lithium battery, use only an equivalent type batteryrecommended by the manufacturer. If your system has a module containing

controller will start a battery learning cycle to determine whether the battery currentcapacity is sufficient. Data caching starts after the battery i

The storage subsystem supports a fiber-optic interface for host and storageexpansion enclosure connections. You must install a Small Form-factor Plugg

Software and firmware support code upgradesTo enable support for the DS5020, you must make sure that your system softwareand firmware are the correct

You must perform this step for each individual controller.To obtain the drive firmware (and ATA translator card firmware) version:Right-click the Driv

ContentsFigures ...ixTables ...xiSafety ...xiiiAbout this document ...

the storage subsystem in different configurations. Table 3 lists the weight of eachcomponent.Table 2. DS5020 weightsUnitWeightMaximum1Empty2ShippingDS

Table 5. Temperature and humidity requirements for storage subsystem when in storage or intransitCondition Parameter RequirementTemperature Storage ra

Table 8 lists the KVA, watts, and Btu calculations. These values assume the powersupplies have a 73 percent efficiency and a power factor of 0.99. The

These levels are measured in controlled acoustical environments according to ISO7779 and are reported in accordance with ISO 9296. The declared sound

Power cords and receptacles: The storage subsystem ships with two jumpercords used to connect to the rack PDU. You must purchase the power cords thata

1220 mm coldaisle width2440 mm betweencenter lines of hotand cold aislePerforated tilesor gratingsbackbackT42 racksT42 racksT42 racksCold aisleHot ais

26 IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide

Chapter 2. Installing the storage subsystemThis chapter provides the information that you need to install the storage subsysteminto a rack cabinet.Bef

5. Before removing the DS5020 from the shipping box, remove the componentsfrom the DS5020 chassis to lighten the unit. See “Removing the CRUs” onpage

13. Turn on the power to the attached storage expansion enclosure and theDS5020 storage subsystem using the procedure described in “Powering on thesto

Power and site wiring requirements ...23Heat output, airflow, and cooling ...24Chapter 2. Installing the storage subsystem .

Support railsDS5020StoragesubsystemBackupbattery unitControllerAC power supplyand fan unitM5 x 8 mmscrews (12)M4 x 8 mmscrews (4)Small Form-factorPlug

Attention: The mounting rails, mounting hardware, and line jumper cordsmight be packed beneath the DS5020 in the shipping box. To remove theseitems fr

v Sufficient space to install the storage subsystemv Enough stability to support the weight of the fully configured storage subsystemand associated sy

Use the following templates (Figure 13 and Figure 14 on page 34) to identify theproper locations for inserting M5 screws when mounting the support rai

Before installing the DS5020 in a rack cabinet, you must install the rails andrack-mounting hardware that come with your storage subsystem. The DS5020

1. Make sure that the rack cabinet has already been installed.2. Make sure that a stabilizer has been correctly attached to the bottom front ofthe rac

v The lip on the rail lines up with the bottom of the storage subsystem (the 0Uboundary in Figure 14 on page 34).5. Using a No. 2 Phillips screwdriver

installed the support rails (as listed in “Installing the support rails” on page 32).Alternately, you can use these instructions to lighten the DS5020

3. Place the controller on a level surface.4. Repeat step 1 through step 3 for the second controller.Removing an ac power supply and fan unitStatement

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-DDMCo

Host-agent (in-band) management method...80Direct (out-of-band) management method ...81Connecting hosts to the DS5020 using Fibre

5. Place the E-DDM CRU horizontally on a level surface.Attention: Do not stack E-DDM CRUs on top of one another. Protect theE-DDM CRUs from vibrations

4. Secure the storage subsystem. Figure 20 shows how to secure the storagesubsystem to the rack.a. Align the front mounting holes on each side of the

5. Continue with one of the following actions:v If you did remove the DS5020 CRUs before installation (as described in“Removing the CRUs” on page 36),

Replacing an ac power supply and fan unitStatement 5:CAUTION:The power control button on the device and the power switch on the powersupply do not tur

along the sides of the power supply and fan unit bay. After the guide pins fit intothe notches and power supply and fan unit fits snugly into the slot

Chapter 3. Cabling the storage subsystemAfter the storage subsystem is installed in its permanent location, you must cable itto hosts, drives, and oth

Fibre Channel loop and ID settingsWhen you install a hard disk drive in the storage subsystem, the drive tray plugsinto a printed circuit board called

Statement 3:CAUTION:When laser products (such as CD-ROMs, DVD drives, fiber-optic devices, ortransmitters) are installed, note the following:v Do not

Installing SFP modulesThe DS5020 requires SFP modules. SFP modules convert electrical signals tooptical signals that are required for Fibre Channel tr

v The operational or redundant loop performance is not affected when you installor remove an SFP module.v You must insert the SFP module into a port b

Parts listing...160Appendix A. Records ...163Identification numbers ...163Storage subsyste

3. Remove the protective cap from the SFP port. Save the protective cap for futureuse.4. Insert the SFP module into the host port until it clicks into

v For SFP modules that contain wire tabs, unlock the SFP module latch bypulling the wire latch outward 90°, as shown in Figure 29.3. With the SFP latc

Connecting an LC-LC cable to an SFP moduleComplete the following steps to connect an LC-LC Fibre Channel cable to an SFPmodule:Statement 3:CAUTION:Whe

4. Carefully insert this end of the LC-LC cable into an SFP module that is installedin the DS5020. The cable connector is keyed so it will be inserted

Removing an LC-LC Fibre Channel cableComplete the following steps to remove an LC-LC Fibre Channel cable:Attention: To avoid damaging the LC-LC cable

In the initial installation of the DS5020, you can add only new storage expansionenclosures to the DS5020 storage subsystem. This means there must be

Overview of steps to connect storage expansion enclosures to astorage subsystemTo connect storage expansion enclosures to the storage subsystem, perfo

1. Follow the instructions in the Installation, User’s, and Maintenance Guide foryour DS5000 or DS4000 storage expansion enclosure to set up and mount

Important: The DS5020 supports the connection of a maximum of six storageexpansion enclosures per redundant drive channel pair. The DS5020supports one

One DS5020 and one storage expansion enclosureIf you are cabling one DS5020 storage subsystem to one storage expansionenclosure, Figure 37 shows the c

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One DS5020 and two storage expansion enclosuresIf you are cabling one DS5020 storage subsystem and two storage expansionenclosures, connect one storag

Important: Do not cable the DS5020 storage subsystem and two storageexpansion enclosures as shown in Figure 39. A storage array with theincorrect stor

One DS5020 and three storage expansion enclosuresIf you are cabling one DS5020 storage subsystem and three storage expansionenclosures, Figure 40 show

One DS5020 and four storage expansion enclosuresIf you are cabling one DS5020 storage subsystem and four storage expansionenclosures, Figure 41 shows

One DS5020 and up to six storage expansion enclosuresIf you are cabling one DS5020 storage subsystem and up to six storage expansionenclosures, Figure

Figure 43 on page 66 shows a cabling topology that is incorrect because all sixstorage expansion enclosures are connected to a single drive port of th

Important: Do not cable the storage subsystem and storage expansion enclosuresas shown in Figure 43. A storage array with the incorrect storagetopolog

EXP520s are denoted in the graphic as 1 while the EXP810s are denoted as2.)DS5020 storage subsystem and supported storage expansionenclosure drive

1. Do not connect a combination of more than six EXP520 or EXP810 storageexpansion enclosures to the two ports of a dual-ported drive channel. Failure

13. The DS5020 supports the intermix of SATA and Fibre Channel E-DDMs withinthe same drive enclosure.ESM BESM AEXP810ESM BESM AEXP810First EXP810stora