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One DS3950 and up to six storage expansion
enclosures .

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One DS3950 and two or more storage
expansion enclosures in a mixed configuration 66

DS3950 storage subsystem and supported storage
expansion enclosure drive cabling schemes .

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. 67

DS3950 storage subsystem drive cabling rules

67

One DS3950 and one EXP395 storage
expansion enclosure

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. 70

One DS3950 and two EXP395 storage
expansion enclosures .

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. 71

One DS3950 and three or more EXP395
storage expansion enclosures

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. 72

Storage expansion enclosure settings .

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. 78

Fibre Channel loop and ID settings

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Storage expansion enclosure ID settings .

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Connecting secondary interface cables

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Configuring the storage subsystem

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Storage subsystem management methods .

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Host-agent (in-band) management method .

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Direct (out-of-band) management method .

. 81

Connecting hosts to the DS3950 using Fibre
Channel host ports .

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Fibre Channel and iSCSI connections .

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Fibre Channel host loop configurations .

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Redundant Fibre Channel host loops .

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iSCSI configurations

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. 88

DS3950 host iSCSI configurations .

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Installing the storage subsystem configuration .

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Cabling the ac power supply

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Chapter 4. Operating the storage
subsystem . . . . . . . . . . . . . 93

Performing the DS3950 Health Check process .

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. 93

Web pages.

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Hardware responsibilities.

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Powering on the storage subsystem .

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Turning on the storage subsystem .

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Installing the DS Storage Manager client.

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. 97

Monitoring status through software .

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Finding controller, storage expansion enclosure,
and drive information .

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. 99

Firmware updates .

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. 100

Troubleshooting the storage subsystem

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. 101

Checking the LEDs

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AC power supply and fan unit LEDs .

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Front LEDs .

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Battery unit LEDs .

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Controller LEDs

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Seven-segment numeric display LEDs .

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Powering off the storage subsystem .

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Turning off the storage subsystem

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Performing an emergency shutdown

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Restoring power after an unexpected shutdown

112

Recovering from an overheated power supply and
fan unit .

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Cache memory and cache battery.

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Cache memory .

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Subsystem cache battery .

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Chapter 5. Replacing components . . 121

Handling static-sensitive devices .

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Service Action Allowed Status LED .

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Replacing a controller

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Installing hard disk drives .

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Working with hot-swap E-DDMs .

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. 128

Installing hot-swap E-DDMs .

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. 130

Replacing hot-swap E-DDMs .

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Replacing multiple E-DDMs

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. 133

Replacing all E-DDMs at the same time

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. 134

Replacing the E-DDMs one at a time

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Verifying the link rate setting .

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. 138

Replacing an ac power supply and fan unit .

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Replacing a battery unit .

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Replacing an SFP module .

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Replacing a midplane

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Chapter 6. Hardware maintenance . . 155

General checkout .

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Solving problems .

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Parts listing .

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Determining basic information of drive FRUs

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. 165

Appendix A. Records . . . . . . . . 167

Identification numbers .

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Storage subsystem and controller information
record .

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. 168

Sample information record .

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. 169

Installed device records .

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. 170

Appendix B. Rack mounting templates 171

Appendix C. Specifications for
non-IBM rack installation . . . . . . 175

General safety requirements for IBM products
installed in a non-IBM rack or cabinet .

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Rack specifications

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Appendix D. Power cords . . . . . . 183

Appendix E. Additional DS3950
documentation . . . . . . . . . . . 187

DS Storage Manager Version 10 library .

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DS3950 storage subsystem library

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. 188

DS4800 storage subsystem library

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. 189

DS4700 storage subsystem library

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. 190

DS4500 storage subsystem library

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DS4400 storage subsystem library

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DS4300 storage subsystem library

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DS4200 Express storage subsystem library .

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DS4100 Storage subsystem library

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. 195

DS3950, DS4000, and DS5000 storage expansion
enclosure documents .

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DS5000 and DS4000-related documents .

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Appendix F. Accessibility . . . . . . 199

Notices . . . . . . . . . . . . . . 201

iv

IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide

Содержание DS3950

Страница 1: ...IBM System Storage DS3950 Storage Subsystem Installation User s and Maintenance Guide GA32 0953 03...

Страница 2: ......

Страница 3: ...IBM System Storage DS3950 Storage Subsystem Installation User s and Maintenance Guide GA32 0953 03...

Страница 4: ...the IBM System Storage DS3950 Storage Subsystem with controller firmware version 7 60 and to all subsequent releases and modifications until otherwise indicated in new editions This edition replaces...

Страница 5: ...nd heat dissipation 22 Shock and vibration requirements 23 Acoustic noise 23 Electrical requirements 23 Power and site wiring requirements 24 Heat output airflow and cooling 24 Chapter 2 Installing th...

Страница 6: ...bsystem 109 Performing an emergency shutdown 112 Restoring power after an unexpected shutdown 112 Recovering from an overheated power supply and fan unit 114 Cache memory and cache battery 116 Cache m...

Страница 7: ...n EMC Directive Conformance Statement 205 Germany Electromagnetic Compatibility Directive 205 Japan Voluntary Control Council for Interference VCCI Class A Statement 207 Japan Electronics and Informat...

Страница 8: ...vi IBM System Storage DS3950 Storage Subsystem Installation User s and Maintenance Guide...

Страница 9: ...three storage expansion enclosures 62 40 Cabling for one DS3950 and four storage expansion enclosures 63 41 Cabling for one DS3950 and up to six storage expansion enclosures 64 42 Cabling for one DS39...

Страница 10: ...131 80 E DDM CRU handle 131 81 Link rate LEDs 140 82 Link rate switch 140 83 Replacing a power supply and fan unit 145 84 Removing and replacing a battery unit from the controller chassis 147 85 Repl...

Страница 11: ...stic codes 108 20 Drive LED activity 129 21 Data transfer rates for drive modules 139 22 Symptom to FRU index 156 23 Parts listing DS3950 storage subsystem 164 24 Storage subsystem and controller info...

Страница 12: ...x IBM System Storage DS3950 Storage Subsystem Installation User s and Maintenance Guide...

Страница 13: ...ous to you A danger statement is placed just before the description of a potentially lethal or extremely hazardous procedure step or situation v Caution These statements indicate situations that can b...

Страница 14: ...water or structural damage v Disconnect the attached power cords telecommunications systems networks and modems before you open the device covers unless instructed otherwise in the installation and co...

Страница 15: ...3 CAUTION When laser products such as CD ROMs DVD drives fiber optic devices or transmitters are installed note the following v Do not remove the covers Removing the covers of the laser product could...

Страница 16: ...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 The device also might have more than...

Страница 17: ...by the NEC and IEC 60950 1 First Edition The Standard for Safety of Information Technology Equipment v Connect the equipment to a reliably grounded safety extra low voltage SELV source An SELV source...

Страница 18: ...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 xvi IBM S...

Страница 19: ...to the DS3950 storage subsystem on and off recover from an overheated power supply and fan unit troubleshoot and interpret LEDs Chapter 5 Replacing components on page 121 contains step by step instruc...

Страница 20: ...pport Guide for storage subsystems with controller firmware version 7 8x xx xx or later v DS4100 Storage Subsystem Installation User s and Maintenance Guide v DS4200 Express Storage Subsystem Installa...

Страница 21: ...n User s and Maintenance Guide v DS5000 Installation User s and Maintenance Guide v DS3950 Installation User s and Maintenance Guide v DS5020 Installation User s and Maintenance Guide 3 Mount the stor...

Страница 22: ...stem 7 Configure network settings v IBM System Storage DS Storage Manager Version 10 Installation and Host Support Guide for storage subsystems with controller firmware version earlier than 7 8x xx xx...

Страница 23: ...ion earlier than 7 8x xx xx v IBM System Storage DS Storage Manager Version 10 8 Installation and Host Support Guide for storage subsystems with controller firmware version 7 8x xx xx or later v DS St...

Страница 24: ...ill find a wide variety of sources available from IBM to assist you This section contains information about where to go for additional information about IBM and IBM products what to do if you experien...

Страница 25: ...nt version and readmes column 7 Click the link for the readme file Web sites The most current information about DS3950 DS4000 and DS5000 family storage subsystems and DS Storage Manager including docu...

Страница 26: ...em x Intel and AMD based servers http www ibm com systems support supportsite wss brandmain brandind 5000008 Fix delivery center for AIX and Linux on POWER Find the latest AIX and Linux on POWER infor...

Страница 27: ...ponsibility of the customer The customer s own insurance underwriter local fire marshal or a local building inspector or both should be consulted in selecting a fire suppression system that provides t...

Страница 28: ...xxvi IBM System Storage DS3950 Storage Subsystem Installation User s and Maintenance Guide...

Страница 29: ...hannel FC SAS or SATA E DDMs In this document the term FC SAS refers to a SAS drive with a FC SAS interposer The DS3950 supports the attachment of up to six EXP395 and EXP810 storage expansion enclosu...

Страница 30: ...The two available models 94H and 98H have the following features Note Depending on the configuration options that were purchased with your DS3950 your hardware features might differ slightly from tho...

Страница 31: ...transfer technology that moves data to and from computer storage devices such as hard drives and tape drives SAS uses a point to point serial protocol instead of the traditional parallel SCSI bus tec...

Страница 32: ...t and left assembly M5 black hex head slotted screws 12 M4 screws 4 Washers 8 8 Gbps Fibre Channel SFPs 4 Note The SFPs come preinstalled in the storage subsystem Attention The DS3950 does not ship wi...

Страница 33: ...rder these options separately Product updates and support notifications Be sure to download the latest versions of the DS Storage Manager host software DS3950 storage subsystem controller firmware sto...

Страница 34: ...ve the files in a location other than in the logical drives that were created for the storage subsystem For more information about how to complete these tasks check the DS Storage Manager online help...

Страница 35: ...Channel and the carrier assembly drive tray The FC SAS E DDMs have a FC SAS interposer card that translates the SAS drive interface to a 4 Gbps FC protocol interface of the DS3950 drive channel Each S...

Страница 36: ...of other DS4000 storage subsystems such as DS4100 or DS4300 storage subsystems The DS3950 E DDM option CRUs are not interchangeable with those of the DS4200 Express and EXP420 When replacing an E DDM...

Страница 37: ...e controller unit Connectors switch and enclosure ID The controllers support fiber optic interfaces for both the host channel and drive channel ports The controllers also contain two Ethernet ports fo...

Страница 38: ...3950 in a redundant drive loop pair the correct enclosure ID settings are x1 x2 x3 and x4 where x can be any digits that can be set Examples of incorrect settings would be 11 21 31 41 or 12 22 32 62 T...

Страница 39: ...t controller IP addresses or by assigning static IP addresses to the controller as described in the next section Complete the following steps to set up the DHCP BOOTP server and network 1 Get the MAC...

Страница 40: ...gement window opens 5 In the Subsystem Management window right click the Controller icon and select Change Network Configuration in the drop down menu The Change Network Configuration window opens 6 I...

Страница 41: ...tart 9 Add a new storage subsystem entry in the Enterprise Management window using the new assigned IP addresses Note To manage storage subsystems through a firewall configure the firewall to open por...

Страница 42: ...r supply and fan unit A Power supply and fan unit B Power connector Power switch Power connector Power switch Figure 4 Power supply and fan unit components for the DS3950 Lever Latch Figure 5 Power su...

Страница 43: ...in the event of a power failure Figure 6 shows how the battery unit slides into the battery backup slot in controller A The backup battery unit provides power to back up the cache memory of each cont...

Страница 44: ...ion of the battery unit is conveyed by indicator LEDs on the front of battery unit Battery unit LEDs on page 104 identifies the indicator LEDs on the battery unit and explains the conditions that each...

Страница 45: ...ort to a maximum of 4 Gbps Conversely an 8 Gbps SFP that is plugged into a 4 Gbps capable port will limit the speed of the port to a maximum of 4 Gbps Carefully check the SFP IBM part number option nu...

Страница 46: ...for storage subsystems with controller firmware version 7 8x xx xx or later Note For the latest information about supported servers and operating systems refer to the interoperability matrix at this W...

Страница 47: ...of the Subsystem Management window click the Drive Enclosure Component icon which is the icon furthest to the right The Drive Enclosure Component Information window opens 2 Click the ESM icon in the...

Страница 48: ...ith front cage frame and midplane Table 4 DS3950 component weights Unit Weight Drive 0 75 kg 1 65 lb Power supply and fan unit 3 60 kg 7 95 lb Controller including cache battery backup unit 2 8 kg 6 1...

Страница 49: ...r lower Table 6 Temperature and humidity requirements for storage subsystem when in storage or in transit Condition Parameter Requirement Temperature Storage range 10 65 C 14 149 F Maximum rate of cha...

Страница 50: ...ft above sea level Storage 30 5 m 100 ft below sea level to 3000 m 9842 ft above sea level Transit 30 5 m 100 ft below sea level to 12 000 m 40 000 ft above sea level Airflow and heat dissipation Figu...

Страница 51: ...stem Table 12 DS3950 sound levels Measurement Level Sound power normal operation 6 4 bels Sound pressure normal operation 68 dBA These levels are measured in controlled acoustical environments accordi...

Страница 52: ...ing currents for the DS3950 storage subsystem with ac power supply and fan unit CRUs AC power recovery After a total ac power failure after normal power is restored the storage subsystem performs powe...

Страница 53: ...tach Kits contact your marketing representative v Where racks are in rows front to front or back to back a gap of at least 1220 mm 48 in must separate the rows across the cold aisle v For proper airfl...

Страница 54: ...26 IBM System Storage DS3950 Storage Subsystem Installation User s and Maintenance Guide...

Страница 55: ...the shipping box in order to lighten the storage subsystem See Removing the CRUs on page 36 The following steps summarize the DS3950 installation process Each step below is detailed in this chapter or...

Страница 56: ...ee Connecting storage expansion enclosures to the DS3950 on page 55 11 Perform one of the following cabling tasks to enable management of the DS3950 configuration v If you are using out of band manage...

Страница 57: ...ic discharge ESD observe the following precautions v Limit your movement Movement can cause static electricity to build up around you v Handle the device carefully holding it by its edges or its frame...

Страница 58: ...DVDs Complete the following steps to prepare the DS3950 storage subsystem for installation into a rack cabinet 1 Prepare the site to meet all area environmental power and site requirements For more in...

Страница 59: ...DS Storage Manager host software If you order one or more additional host software kits the kits might also be shipped in the DS3950 shipping box The DVD also includes the DS3950 storage subsystem con...

Страница 60: ...v Review the documentation that comes with your rack enclosure for safety and cabling considerations v Install the storage subsystem in an environment with a temperature of 22 C 72 F See Environmental...

Страница 61: ...t at the 3U section where you will install the DS3950 U boundaries are shown as horizontal dashed lines in the rack mounting templates The highlighted squares on each side of the template mark the pos...

Страница 62: ...n maximum This rack conforms to the EIA standard Where you place the support rails in the rack depends on where you intend to position the storage subsystem Complete the following steps to install the...

Страница 63: ...mounting templates on page 171 Use the preceding templates Figure 12 on page 33 and Figure 13 on page 34 to identify the proper locations for inserting M5 screws when mounting the support rails and DS...

Страница 64: ...ure to do so will cause the storage subsystem to fit unevenly in the rack 12 Continue with Removing the CRUs Installing the DS3950 This section provides instructions on installing the DS3950 The insta...

Страница 65: ...to remove the blank trays Statement 4 18 kg 39 7 lb 32 kg 70 5 lb 55 kg 121 2 lb CAUTION Use safe practices when lifting Attention The storage subsystem comes with a bezel that is attached to the fron...

Страница 66: ...removing the power supply and fan unit Complete the following steps to remove a power supply and fan unit 1 Squeeze the latch and pull the lever open 90 so that the lever is horizontal to release the...

Страница 67: ...ion and identify your E DDMs You must record this information to be able to replace the E DDMs in their original order before they were removed 2 Release the latch on the E DDM CRU by pressing on the...

Страница 68: ...orm all of the remaining procedures in this chapter 2 Using a No 2 Phillips screwdriver remove the four M4 screws from the rails two screws in each rail If you do not remove these screws the storage s...

Страница 69: ...the front of the support rails b Using the M4 screws that you removed in step 2 on page 40 secure the sides in the back of the DS3950 to the rack rails c Secure the front of the DS3950 using the four...

Страница 70: ...right controllers are seated in the DS3950 chassis in opposite orientations If you cannot fully insert the controller into the controller bay flip it 180 and reinsert it 1 Slide one controller into th...

Страница 71: ...ion 1 Slide one power supply and fan unit into the storage subsystem Be sure to replace the power supply and fan units so that the lever on each power supply and fan unit opens toward the interior of...

Страница 72: ...d fan unit Replacing an E DDM Complete the following steps to replace the hot swap E DDMs that you removed before the installation Attention After you remove an E DDM CRU wait 70 seconds before replac...

Страница 73: ...troller next to the indicator lights It provides a unique identifier for each enclosure in the DS3950 storage subsystem configuration The controller automatically sets the enclosure ID number You can...

Страница 74: ...mall Form factor Pluggable transceiver SFP connects each host channel port and drive channel port to hosts and storage expansion enclosures Notes 1 IBM SFP options have been tested and approved for th...

Страница 75: ...e enough slack in the cables so they do not bend to a diameter of less than 76 mm 3 in or a radius less than 38 mm 1 5 in when extended or become pinched when retracted v Do not overtighten the cable...

Страница 76: ...not mix long wave SFPs and short wave SFPs on a single storage subsystem Use only short wave SFPs You can use the DS Storage Manager client to view the Storage Subsystem Profile to verify that you ar...

Страница 77: ...n Carefully check the SFP IBM part number option number and FRU part number to identify its speed There are no physical features that distinguish a 4 Gbps SFP from an 8 Gbps SFP Statement 3 CAUTION Wh...

Страница 78: ...n To avoid damage to the cable or to the SFP module make sure that you unplug the LC LC Fibre Channel cable before you remove the SFP module 1 Remove the LC LC Fibre Channel cable from the SFP module...

Страница 79: ...l cables The LC LC Fibre Channel cable is a fiber optic cable that you use to connect DS3950 Fibre Channel ports into one of the following devices v An SFP module installed in a Fibre Channel switch p...

Страница 80: ...result in hazardous radiation exposure DANGER Some laser products contain an embedded Class 3A or Class 3B laser diode Note the following Laser radiation when open Do not stare into the beam do not v...

Страница 81: ...er end of the LC LC cable Save the protective caps for future use 6 Connect this end of the LC LC cable to one of the following devices v An SFP module that is installed in a separate storage expansio...

Страница 82: ...astic tab when you remove the cable 1 On the end of the LC LC cable that connects into the SFP module or host bus adapter press down and hold the lever to release the latches as shown in Figure 32 Lev...

Страница 83: ...eature options To attach an EXP810 storage expansion enclosure or enclosures to the DS3950 you must purchase the Attach EXP810 to DS3950 Activation feature option Contact your IBM marketing representa...

Страница 84: ...nnect storage expansion enclosures to the storage subsystem perform the following steps Note The following procedures are for cold case procedures in which the DS3950 is powered down when storage expa...

Страница 85: ...orage expansion enclosure ID settings on page 78 and then refer to your storage expansion enclosure installation manual for details on setting the enclosure ID The DS3950 storage subsystem locates the...

Страница 86: ...nels Ethernet ports and dual ported Fibre Channel drive channels at the back of the DS3950 storage subsystem Note Your DS3950 hardware might differ slightly from the following illustration Notes 1 EXP...

Страница 87: ...age expansion enclosures Do not use Figure 36 as the cabling diagram Follow the instructions in DS3950 storage subsystem and supported storage expansion enclosure drive cabling schemes on page 67 for...

Страница 88: ...in Figure 37 As Figure 37 shows when you connect additional storage expansion enclosures you can connect them by using the additional port of the drive channel When you connect additional storage exp...

Страница 89: ...ology might appear to be functional but incorrect cabling can potentially have unpredictable results Storage subsystem Port 2 drive channel 1 Port 1 drive channel 1 Port 1 drive channel 2 Port 2 drive...

Страница 90: ...39 shows the correct cabling topology 1A 1B Port 2 drive channel 1 1A 1B 1A 1B 1A 1B Port 1 drive channel 1 Port 1 drive channel 2 Port 2 drive channel 2 1A 1B 1A 1B Storage subsystem Figure 39 Cablin...

Страница 91: ...closures Figure 40 shows the correct cabling topology 1A 1B Port 2 drive channel 1 1A 1B 1A 1B 1A 1B Port 1 drive channel 1 Port 1 drive channel 2 Port 2 drive channel 2 1A 1B 1A 1B 1A 1B 1B 1A Storag...

Страница 92: ...rect cabling topology 1A 1B Port 2 drive channel 1 1A 1B 1A 1B 1A 1B Port 1 drive channel 1 Port 1 drive channel 2 Port 2 drive channel 2 1A 1B 1B 1A 1B 1A 1B 1A 1B 1B 1A 1B 1B 1A 1A 1A Storage subsys...

Страница 93: ...shows a cabling topology that is incorrect because all six storage expansion enclosures are connected to a single drive port of the dual ported drive channel in each controller Chapter 3 Cabling the...

Страница 94: ...configuration in which you have more than one type of storage expansion enclosure Figure 43 on page 67 shows the cabling topology if you have three EXP395s and three EXP810s attached to the DS3950 The...

Страница 95: ...more EXP810 storage expansion enclosures The following sections show cabling schemes for supported storage expansion enclosures and the DS3950 storage subsystem v One DS3950 and one EXP395 storage exp...

Страница 96: ...e drive channel from each of controllers A and B must be connected to the same set of storage expansion enclosures to provide drive channel redundancy Do not connect a combination of more than six sto...

Страница 97: ...expansion enclosure Last EXP810 storage expansion enclosure Storage subsystem ESM port 1A ESM port 1B ESM port 1A ESM port 1A ESM port 1B ESM port 1A ESM port 1A ESM port 1B Drive channel port Other s...

Страница 98: ...1 in controller A on the DS3950 to port 1B on the left ESM of the EXP395 2 Connect either port 1 or port 2 of the dual ported drive channel 2 in controller B on the DS3950 to port 1B on the right ESM...

Страница 99: ...5 one 2 Connect port 1B on the right ESM in EXP395 one to port 1 of drive channel 2 on the DS3950 3 Connect port 1 of drive channel 1 on the DS3950 to port 1B on the left ESM in EXP395 two 4 Connect p...

Страница 100: ...rm the following steps to create the cabling scheme shown in Figure 47 1 Connect port 1A on the left ESM in EXP395 one to port 1B on the left ESM in EXP395 two 2 Connect port 1A on the right ESM in EX...

Страница 101: ...port 1 of drive channel 1 on the DS3950 6 Connect port 1B on the right ESM in EXP395 two to port 1 of drive channel 2 on the DS3950 Figure 48 on page 74 shows the cabling scheme for one DS3950 storage...

Страница 102: ...rive channel 1 on the DS3950 4 Connect port 1B on the right ESM in EXP395 two to port 1 of drive channel 2 on the DS3950 1A 1B Port 2 drive channel 1 1A 1B 1A 1B 1A 1B Port 1 drive channel 1 Port 1 dr...

Страница 103: ...1B on the left ESM in EXP395 three to port 1 of drive channel 1 on the DS3950 8 Connect port 1B on the right ESM in EXP395 four to port 2 of drive channel 2 on the DS3950 Figure 49 on page 76 shows t...

Страница 104: ...2 Port 2 drive channel 2 1A 1B 1B 1A 1B 1A 1B 1A 1B 1B 1A 1B 1B 1A 1A 1A EXP395 four EXP395 five EXP395 six EXP395 one EXP two 395 EXP three 395 Storage subsystem Figure 49 One DS3950 and a maximum o...

Страница 105: ...on the right ESM in EXP395 three to port 1 of drive channel 2 on the DS3950 7 Connect port 1A on the left ESM in EXP395 four to port 1B on the left ESM in EXP395 five 8 Connect port 1A on the left ES...

Страница 106: ...e of 00 77 However if your DS3950 enclosure ID was set to a value within the range of 00 77 it might be in conflict with the enclosure ID of one of the drive expansion enclosures that you are trying t...

Страница 107: ...ports for controller A located on the top and controller B located on the bottom on the back of the storage subsystem Figure 50 shows the location of the ports on the DS3950 storage subsystem Only on...

Страница 108: ...that the storage subsystem logical drives are mapped to is not Microsoft Windows 2000 or Server 2003 then you have to make a direct out of band management connection to the storage subsystem to set th...

Страница 109: ...ersion for your subsystem refer to the following guides for more information about setting the management connections and installing the DS3950 storage subsystem management software v IBM System Stora...

Страница 110: ...50 RAID controllers perform the following steps 1 Install SFP modules in host ports on RAID controllers A and B Note The alignment of the single ported host channels on controller A are opposite those...

Страница 111: ...ation 3 Repeat steps 1 on page 82 and 2 on page 82 for each additional redundant host connection You can create two redundant host connections for the DS3950 storage subsystem as shown in Figure 54 on...

Страница 112: ...0 supports redundant drive channel loop configurations You can build a redundant drive channel loop by connecting one or more storage expansion enclosures to the redundant RAID controllers Then use du...

Страница 113: ...ant host direct attached configurations as shown in Figure 55 on page 86 v Single SAN fabric configuration as shown in Figure 56 on page 86 v Dual SAN fabric configuration as shown in Figure 57 on pag...

Страница 114: ...o host adapters Host system with two host adapters Host system with two host adapters Storage subsystem Storage subsystem Figure 55 Examples of redundant host direct attached Fibre Channel SAN configu...

Страница 115: ...e subsystem Host system with two host adapters Host system with two host adapters Switch Switch Figure 57 Example of a dual SAN fabric configuration Host system with two host adapters Host system with...

Страница 116: ...e port configuration as shown in Figure 60 on page 89 v Multiple host multiple port configuration as shown in Figure 61 on page 89 v iSCSI and Fibre Channel hosts multiple port configuration as shown...

Страница 117: ...multiple port and redundant path and controller configuration You can replace the two gigabit Ethernet switches in the illustration with one large gigabit Ethernet switch that has the required number...

Страница 118: ...HBA Fibre Channel switch Controller A Controller B Fibre Channel ports iSCSI ports Fibre Channel ports Host 2 with two single port iSCSI HBAs iSCSI ports Storage subsystem Figure 62 Example of iSCSI...

Страница 119: ...have unpredictable results Figure 64 on page 92 shows an example of a multiple host multiple port multiple switch configuration Gigabit Ethernet switch Host with two single port iSCSI HBAs and one du...

Страница 120: ...onnect the ac power supply cable 1 Using the supplied strap tie the power supply cord to the rail to provide strain relief for the power cord 2 Connect the power cable to the power supply 3 Plug the s...

Страница 121: ...ogs periodically for regular Health Check monitoring regardless of the state of the Recovery Guru You can collect all these logs at once and zip them into a single file by clicking Advanced Troublesho...

Страница 122: ...ical information and download device drivers and updates For DS3950 DS4000 and DS5000 information go to the following Web site http www ibm com systems support storage disk For the latest information...

Страница 123: ...to the overall health of the system Powering on the storage subsystem This section contains instructions for turning the storage subsystem on under normal and emergency situations When you turn on an...

Страница 124: ...EDs light on any of the storage expansion enclosures To verify the Fibre Channel connections between the drive expansion enclosures make sure that no Port Bypass LEDs for connections to other storage...

Страница 125: ...eshooting procedures see Chapter 6 Hardware maintenance on page 155 c When the recovery procedure is completed select Recheck in the Recovery Guru This action reruns the Recovery Guru to make sure tha...

Страница 126: ...n a location other than the logical drives created for the DS3950 Always refer to the readme that is included with the DS3950 storage subsystem firmware package whether the firmware is accessed by the...

Страница 127: ...drive failure on a drive varies depending on the drive status hot spare unassigned RAID level current logical drive status and so on Depending on the circumstances a PFA flag on a drive can indicate...

Страница 128: ...subsystem For optimal operation of the DS3950 and its attached storage expansion enclosures the storage expansion enclosure ESM firmware the DS3950 controller firmware the hard drive firmware and the...

Страница 129: ...s on the storage subsystem to help locate a failed component 1 Open the Subsystem Management window 2 Select the component button for each storage expansion enclosure in this storage subsystem and vie...

Страница 130: ...r During power on the indicator LEDs flash intermittently as the storage subsystem and components complete the power up process In addition to checking for faults you can use the LEDs on the front of...

Страница 131: ...tatus Drive Activity LED On not flashing No data is being processed flashing Data is being processed Off Drive Fault LED Off flashing Drive volume or storage array locate function On not flashing Glob...

Страница 132: ...ary Fault LED turns on if a fault condition is detected in any component in the storage subsystem configuration including all attached storage expansion enclosures The Global Power Global Summary Faul...

Страница 133: ...ler options and other components see the Parts listing on page 164 Heartbeat LED Diagnostic LED Cache active LED Service action required LED Service action allowed LED Host channel speed L1 LED Drive...

Страница 134: ...hannel Speed L2 See Table 18 on page 107 Link Speed Model 98H only On 1 Gbps Off 100 Mbps Not applicable Heartbeat LED Diagnostic LED Cache active LED Service action required LED Service action allowe...

Страница 135: ...d drive channel LED definitions L1 L2 Definition Off Off When both LEDs for a host or drive channel are off this indicates one or more of the following conditions v The host or drive channel ports are...

Страница 136: ...age subsystem state information In general these codes are displayed only when the storage subsystem is in a non operational state The storage subsystem might be non operational due to a configuration...

Страница 137: ...situation occurs see Restoring power after an unexpected shutdown on page 112 Turning off the storage subsystem Use the following procedure to turn off the power for the DS3950 Attention Except in an...

Страница 138: ...eview the following information before you continue with the power off procedure below Turn off the power to each device based on the following shutdown sequence 1 Turn off power to the host before th...

Страница 139: ...s the status Optimal on all configuration components v Yes Go to step 6 v No Go to step 5 5 To diagnose and correct the fault complete the following steps a Run the Recovery Guru by selecting the Reco...

Страница 140: ...re failure in the power system or in the midplane Complete the following steps to shut down the system during an emergency 1 If you have time stop all I O activity to the storage subsystem by shutting...

Страница 141: ...quired 3 Check the system documentation of the hardware devices that you want to turn on and determine the proper startup sequence Note Be sure to turn on all of the storage expansion enclosures and v...

Страница 142: ...r than 55 C do not assume the power supply and fan unit CRU is bad Take action to cool down the environment first When the operating environment temperature is within the specified operating environme...

Страница 143: ...power switch on each controller in the storage subsystem power off all connected storage expansion enclosures and flip the disconnected devices to the OFF position Wait 1 minute and then turn on power...

Страница 144: ...he battery Each RAID controller in the DS3950 storage subsystem contains either 1 GB or 2 GB of cache memory to store read and write operations Both RAID controllers in the DS3950 must have the same a...

Страница 145: ...ger client to check your cache memory settings before assuming a hardware failure Figure 71 shows the locations of the Cache Active LEDs on the front of the RAID controllers Subsystem cache battery Th...

Страница 146: ...the Storage Manager online help Replace the battery only when it is in a failed state as indicated by the Storage Manager Recovery Guru Each power supply and fan unit has green Battery LEDs on the ba...

Страница 147: ...new battery is installed to replace a failed battery or when the subsystem power is turned on after months of inactivity Attention Write caching is suspended while a battery pack is either charging o...

Страница 148: ...120 IBM System Storage DS3950 Storage Subsystem Installation User s and Maintenance Guide...

Страница 149: ...rs can handle and possibly damage the device v While the device is still in its static protective package touch it to an unpainted metal part of the storage subsystem for at least two seconds This dra...

Страница 150: ...pes of host ports FC or iSCSI and same FRU part number Inserting a non compatible controller causes the controller to be placed in a lockout state by the other controller in the DS3950 chassis Note Th...

Страница 151: ...e replacement controller will serve as controller A or controller B controller A is inserted in the left controller bay controller B is inserted in the right controller bay and then apply the controll...

Страница 152: ...C LC Fibre Channel cable from the SFP module For more information see Handling fiber optic cables on page 47 b Unlock the SFP module latch v For SFP modules that contain plastic tabs unlock the SFP mo...

Страница 153: ...CRU 9 Slowly pull the lever away from the chassis to remove the controller from the bay Use two hands when releasing the controller levers Figure 75 shows the controller sliding from the storage subsy...

Страница 154: ...the controller is fully operational 15 Remove the antistatic protection 16 Use the DS Storage Manager client Subsystem Management window to check the status of all components in the storage subsystem...

Страница 155: ...IBM DS3000 DS4000 or DS5000 storage subsystem 1 Remove the hard disk drive filler if it exists 2 Install the hard disk drive starting in drive slot 0 or the next available drive slot 3 Install additio...

Страница 156: ...open without either a drive blank or an E DDM CRU inserted v E DDM CRUs The DS3950 storage subsystem supports 4 Gbps Fibre Channel FC SAS and SATA E DDMs The link rate setting speed must be set accor...

Страница 157: ...50 an insufficient load to the enclosure power supplies might cause them to intermittently appear as failed falsely indicating the power supplies are bad All of the E DDMs in the DS3950 storage subsys...

Страница 158: ...the drive tray connects into a printed circuit board called the midplane The midplane sets the Fibre Channel loop ID automatically based on the setting of the enclosure ID switch and the physical loc...

Страница 159: ...the E DDM by doing the following Note The hard disk drive comes installed in a drive tray Do not attempt to detach the drive from the tray a Release the latch on the drive CRU by pressing on the insid...

Страница 160: ...ient software to print a new storage system profile 2 Determine the location of the E DDM that you want to remove Attention Never hot swap an E DDM CRU when its associated green Activity LED is flashi...

Страница 161: ...e subsystem before you turn off the attached storage expansion enclosures After replacing all the E DDMs you must reconfigure the new E DDMs and restore data from backup See the procedure in Replacing...

Страница 162: ...to be performed to restore the data in the event that the array failed because of an addition E DDM failed while the array is in degraded state Replacing all E DDMs at the same time Use this procedur...

Страница 163: ...al drives from the host before you power off the storage subsystem Attention To turn off all power to the storage subsystem you must turn off both power supply and fan unit switches and disconnect bot...

Страница 164: ...must turn on both power supply and fan unit switches to take advantage of the redundant power supplies 10 Check the green Drive activity LEDs and the amber Drive fault LEDs above the new E DDM CRUs M...

Страница 165: ...e 29 4 Unpack the new E DDMs Set the E DDMs on a dry level surface away from magnetic fields Save the packing material and documentation in case you need to return the E DDMs 5 Use the DS Storage Mana...

Страница 166: ...nstruction to finish the Drive activity LED stops flashing Note The Drive activity LED will continue to flash after reconstruction is finished if there is I O activity to that E DDM In that case use t...

Страница 167: ...t set the link rate on the storage expansion enclosure to the same rate as the storage subsystem to which it is connected Information about supported DS3950 DS4000 and DS5000 storage subsystems can be...

Страница 168: ...to avoid damage from static electricity For details about handling static sensitive devices see Handling static sensitive devices on page 29 4 Locate the link rate switch Figure 81 shows the location...

Страница 169: ...e c When the procedure is completed rerun the Recovery Guru to make sure that the problem has been corrected by selecting Recheck in the Recovery Guru 11 If the problem persists contact IBM Customer a...

Страница 170: ...power supply and fan units are hot swappable and redundant however if the fans in one power supply and fan unit fail you must replace the entire failed power supply and fan unit within 72 hours to mai...

Страница 171: ...the failed power supply and fan unit CRU Note The new power supply and fan unit CRU comes with an instruction sheet and label sheet The instruction sheet provides instructions on placing the applicab...

Страница 172: ...utlet 3 Remove signal cables from connectors 4 Remove all cables from devices 9 Turn off the power switch and unplug the power cord from the failed power supply and fan unit 10 Squeeze the latch and p...

Страница 173: ...at the power supply unit is connected to The power cord might be faulty Go to step 16 v Fault and ac power LED are on but the power LED is off The power supply and fan unit is faulty Turn the power su...

Страница 174: ...has failed You can also use the DS Storage Manager client to check the status of the battery Because write caching is disabled when either one of the battery units fail replace the failed battery unit...

Страница 175: ...ery unit that is indicated as failed by the LEDs 4 Put on antistatic protection 5 To remove the failed battery unit from the RAID controller press the orange battery unit latch toward the black batter...

Страница 176: ...n the new battery unit 8 Insert the new battery unit into the controller chassis Make sure the new battery unit is inserted in the correct orientation in the battery unit bay Press the battery unit fu...

Страница 177: ...strates installing an SFP module Electrostatic discharge can damage sensitive components To prevent electrostatic discharge damage to the storage subsystem use proper antistatic protection when handli...

Страница 178: ...the Fibre Channel cable is good and the SFP on the other end of the Fibre Channel connection is working properly When finished go to step 12 v Bypass LED and Fault LED are off Go to step 12 12 Is the...

Страница 179: ...rical current from the device make sure that all power cords are disconnected from the power supply and fan unit input connectors 2 Label and remove the power cords from the power supply and fan units...

Страница 180: ...drive CRUs if the storage subsystem has them See Removing an E DDM on page 39 for instructions Place E DDMs on ESD protected surface Attention Do not stack E DDM CRUs on top of each other Protect the...

Страница 181: ...t approximately two inches Grab the two sides of the front cage frame and remove it from the chassis Note The front cage frame might be tightly secured in the chassis Mount the DS3950 chassis back in...

Страница 182: ...them to guide you 21 Re insert the controllers and reconnect the Fibre Channel cables 22 Re insert the power supply and fan units and reconnect the power supply cords 23 Turn on the power to the attac...

Страница 183: ...h additional diagnostic aids Solving problems This section contains information to help you solve some of the problems you might have with your storage subsystem Table 22 on page 156 contains the prob...

Страница 184: ...er Fault LED Note Controller Service Action Allowed LED will also be lit RAID controller failure Replace the RAID controller See your controller documentation for more information See Chapter 5 Replac...

Страница 185: ...D is lit also replace the RAID controller Front panel Global Summary Fault LED General machine fault A Fault LED is lit somewhere on the storage subsystem check for Amber LEDs on CRUs General machine...

Страница 186: ...lashing All drive CRUs The DS3950 controllers are going through start of day process booting up Wait up to five minutes for the controllers to complete the booting process If the drive Activity LEDs a...

Страница 187: ...roller drive SFP port does not operate at 4 Gbps Use the Recovery Guru menu function in the Storage Manager Client Subsystem Management window to verify the problem and replace the SFP with a 4 Gbps S...

Страница 188: ...technical support representative Several CRUs Hardware failure Replace the affected CRUs If this does not correct the problem replace the RAID controllers followed by the midplane Contact an IBM techn...

Страница 189: ...removed the empty drive slots must be filled with other drives or blank drive trays to ensure optimal air flow Drives are incompatible Power to incompatible drives is turned off when they are inserte...

Страница 190: ...pport representative Hard disk drive is not visible in RAID management software Several CRUs Drive or drives failed Replace failed drive or drives Fibre Channel cable failed Replace Fibre Channel cabl...

Страница 191: ...ubsystem supports up to 32 drives which includes 16 drives in the DS3950 chassis and the 16 more drives if an EXP395 storage expansion enclosure is attached To attach more than 32 drives you much purc...

Страница 192: ...er controller that have 2 GB cache memory 1 GB per controller 69Y2731 Model 98H controllers with four 8 Gbps FC host ports two per controller and four 1 GB iSCSI host ports two ports per controller 69...

Страница 193: ...0 RPM drive module 81Y2464 10 Cage assembly 59Y5249 Empty drive filler panel 42D3315 Cable fiber optic 1 m 39M5699 Cable fiber optic 5 m 39M5700 Cable fiber optic 25 m 39M5701 LC wrap plug assembly 39...

Страница 194: ...o determine the drive capacity and the drive FRU part number A sample IBM hologram label is shown in the following figure Do not refer to the drive properties given here Refer to the drive properties...

Страница 195: ...a whenever you contact your IBM technical support representative Identification numbers Record and retain the following information Product name IBM System Storage DS3950 Storage Subsystem Machine typ...

Страница 196: ...st or Domain Name System DNS table The information is also helpful if you add storage subsystems after initial installation Refer to your Storage Manager documentation for detailed instructions about...

Страница 197: ...tion record Storage subsystem name Management method Controllers Ethernet and IP addresses and host name Host IP address and host name Controller A Controller B Finance Direct Hardware Ethernet addres...

Страница 198: ...orresponding bay number Attention If you replace a hard disk drive in the wrong drive bay it might cause a loss of data Table 26 Hard disk drive record Bay number Hard disk drive serial number Replace...

Страница 199: ...gure 91 on page 173 to identify the proper locations for inserting M5 screws when mounting the support rails and DS3950 to a rack The locations for the M5 screws are highlighted in the templates The D...

Страница 200: ...assembly front right FRONT Rack Mounting Template Install first Install second Install second Install first Install second Install first Install first Install second Figure 90 Front rack mounting tem...

Страница 201: ...2U 1U 1U 0U 0U Rail assembly rear left Rail assembly rear right Printed in the U S A REAR Rack Mounting Template Rail mounting guide Figure 91 Rear rack mounting template Appendix B Rack mounting temp...

Страница 202: ...174 IBM System Storage DS3950 Storage Subsystem Installation User s and Maintenance Guide...

Страница 203: ...trays power distribution unit uninterruptible power supplies multi outlet strips or any other products installed in the rack or cabinet that connect to hazardous voltage Examples of OSHA approved NRTL...

Страница 204: ...by the National Electrical Code and the Canadian Electrical Code The total load connected to the power distribution unit must be less than the rating of the power distribution unit For example a powe...

Страница 205: ...on Planning Representative if in doubt 12 There must not be any special education or training required for safe servicing of any of the product s installed in the racks Contact your Installation Plann...

Страница 206: ...he rack or cabinet must be 719 mm 28 3 in apart and the internal width bounded by the mounting flanges at least 494 mm 19 45 in for the IBM Storage System or eServer rails to fit in your rack or cabin...

Страница 207: ...r 6 75 mm min 15 9 mm 15 9 mm 12 7 mm 15 9 mm 15 9 mm 12 7 mm Figure 93 Rack specifications dimensions top front view Bottom Front of Rack EIA Hole Spacing 6 75 mm min 15 9 mm 15 9 mm 15 9 mm 15 9 mm...

Страница 208: ...ht be required 5 The rack or cabinet must have stabilization feet or brackets installed both in the front and rear of the rack or have another means of preventing the rack cabinet from tipping while t...

Страница 209: ...to maintain the required drawer ambient inlet temperature as specified in the server specifications The perforations should yield at least 34 percent minimum open area per square inch Appendix C Spec...

Страница 210: ...182 IBM System Storage DS3950 Storage Subsystem Installation User s and Maintenance Guide...

Страница 211: ...ree conductor cord a maximum of 15 feet in length and a tandem blade grounding type attachment plug rated 15 amperes 250 volts For units intended to be operated at 230 volts outside the U S Use a cord...

Страница 212: ...deloupe Guinea Guinea Bissau Hungary Iceland Indonesia Iran Kazakhstan Kyrgyzstan Laos Peoples Democratic Republic of Latvia Lebanon Lithuania Luxembourg Macedonia former Yugoslav Republic of Madagasc...

Страница 213: ...8m Israel 39Y7919 9828 Power Cord 250v 10A 2 8m Liechtenstein Switzerland 39Y7922 9829 Power Cord 250v 10A 2 8m Bangladesh Lesotho Maceo Maldives Namibia Nepal Pakistan Samoa South Africa Sri Lanka S...

Страница 214: ...186 IBM System Storage DS3950 Storage Subsystem Installation User s and Maintenance Guide...

Страница 215: ...ger Version 10 library Table 28 associates each document in the DS Storage Manager Version 10 library with its related common user tasks Table 28 DS Storage Manager Version 10 titles by user tasks Tit...

Страница 216: ...y Table 29 associates each document in the DS3950 storage subsystem library with its related common user tasks Table 29 DS3950 storage subsystem document titles by user tasks Title User Tasks Planning...

Страница 217: ...Tasks Planning Hardware Installation Software Installation Configuration Operation and Administration Diagnosis and Maintenance IBM System Storage DS4800 Storage Subsystem Installation User s and Main...

Страница 218: ...IBM System Storage DS4700 Storage Subsystem Installation User s and Maintenance Guide U U U U U IBM System Storage Quick Start Guide Quick Reference for the DS4700 and DS4200 Sections 2 3 and 4 also...

Страница 219: ...s Title User Tasks Planning Hardware Installation Software Installation Configuration Operation and Administration Diagnosis and Maintenance IBM TotalStorage DS4500 Storage Subsystem Installation User...

Страница 220: ...ardware Installation Software Installation Configuration Operation and Administration Diagnosis and Maintenance IBM TotalStorage DS4400 Fibre Channel Storage Server User s Guide U U U U U IBM TotalSto...

Страница 221: ...ation Operation and Administration Diagnosis and Maintenance IBM TotalStorage DS4300 Storage Subsystem Installation User s and Maintenance Guide U U U U U IBM TotalStorage DS4300 Rack Mounting Instruc...

Страница 222: ...g Hardware Installation Software Installation Configuration Operation and Administration Diagnosis and Maintenance IBM System Storage DS4200 Express Storage Subsystem Installation User s and Maintenan...

Страница 223: ...system document titles by user tasks Title User Tasks Planning Hardware Installation Software Installation Configuration Operation and Administration Diagnosis and Maintenance IBM TotalStorage DS4100...

Страница 224: ...tion User s and Maintenance Guide U U U U U U IBM System Storage DS4000 EXP810 Storage Expansion Enclosure Installation User s and Maintenance Guide U U U U U IBM TotalStorage DS4000 EXP700 and EXP710...

Страница 225: ...ce Information U U U U IBM TotalStorage DS4000 FC2 133 Host Bus Adapter Installation and User s Guide U U IBM TotalStorage DS4000 FC2 133 Dual Port Host Bus Adapter Installation and User s Guide U U I...

Страница 226: ...198 IBM System Storage DS3950 Storage Subsystem Installation User s and Maintenance Guide...

Страница 227: ...other required host software components Table 39 defines the keyboard operations that enable you to navigate select or activate user interface components The following terms are used in the table v N...

Страница 228: ...nt to select press Ctrl Spacebar to select the drive If you press Spacebar alone when multiple drives are selected then all selections are removed Use the Ctrl Spacebar combination to deselect a drive...

Страница 229: ...S OF NON INFRINGEMENT MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE Some states do not allow disclaimer of express or implied warranties in certain transactions therefore this statement may not...

Страница 230: ...tion 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 Corp registered...

Страница 231: ...y not IBM Some software might differ from its retail version if available and might not include user manuals or all program functionality Particulate contamination Attention Airborne particulates incl...

Страница 232: ...lina U S A Documentation format The publications for this product are in Adobe Portable Document Format PDF and should be compliant with accessibility standards If you experience difficulties when you...

Страница 233: ...conform la norme NMB 003 du Canada Australia and New Zealand Class A Statement Attention This is a Class A product In a domestic environment this product might cause radio interference in which case t...

Страница 234: ...den angemessene Ma nahmen zu ergreifen und daf r aufzukommen Deutschland Einhaltung des Gesetzes ber die elektromagnetische Vertr glichkeit von Ger ten Dieses Produkt entspricht dem Gesetz ber die ele...

Страница 235: ...chnology Industries Association JEITA Statement Japanese Electronics and Information Technology Industries Association JEITA Confirmed Harmonics Guideline products less than or equal to 20 A per phase...

Страница 236: ...ss 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 f2c00790 208 IBM System...

Страница 237: ...rnal Fibre Channel link and vice versa Also called an I O adapter host adapter or Fibre Channel adapter advanced technology AT bus architecture A bus standard for IBM compatibles It extends the XT bus...

Страница 238: ...ing The name of a community contained in each Simple Network Management Protocol SNMP message concurrent download A method of downloading and installing firmware that does not require the user to stop...

Страница 239: ...ome into close enough proximity to discharge environmental service module ESM canister A component in a storage expansion enclosure that monitors the environmental condition of the components in that...

Страница 240: ...e also asynchronous write mode Global Copy remote mirroring Metro Mirroring graphical user interface GUI A type of computer interface that presents a visual metaphor of a real world scene often of a d...

Страница 241: ...evice in the Physical and Data Path maps LAN See local area network LBA See logical block address local area network LAN A computer network located on a user s premises within a limited geographic are...

Страница 242: ...l SNMP a station that runs management application programs that monitor and control network elements NMI See non maskable interrupt NMS See network management station non maskable interrupt NMI A hard...

Страница 243: ...sk on a server node configured to provide continuous access to data and file systems in a cluster redundant array of independent disks RAID A collection of disk drives array that appears as a single v...

Страница 244: ...to convert signals between optical fiber cables and switches An SFP is smaller than a gigabit interface converter GBIC See also gigabit interface converter SNMP See Simple Network Management Protocol...

Страница 245: ...rticular TL_port Transmission Control Protocol TCP A communication protocol used in the Internet and in any network that follows the Internet Engineering Task Force IETF standards for internetwork pro...

Страница 246: ...218 IBM System Storage DS3950 Storage Subsystem Installation User s and Maintenance Guide...

Страница 247: ...rives 6 battery unit 15 battery units 7 controllers 7 power supply and fan units 7 SFP modules 7 weights 20 Concepts Guide 187 configuration installing the storage subsystem 92 contamination particula...

Страница 248: ...stem Storage DS3950 battery unit 15 battery unit LEDs 104 cache memory and cache battery 116 Health Check process 93 installing the configuration 92 identification numbers 167 in band management metho...

Страница 249: ...cable 54 static protective package 49 Small form Factor Pluggable modules described 16 replacing 148 SNMP traps 11 specifications 19 specifications fiber optic cables 47 startup sequence 95 static se...

Страница 250: ...222 IBM System Storage DS3950 Storage Subsystem Installation User s and Maintenance Guide...

Страница 251: ......

Страница 252: ...Part Number 00Y5046 Printed in USA GA32 0953 03 1P P N 00Y5046...

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