Procedure: Powering off a Storwize V7000 Gen2
control enclosure ........... 281
Procedure: Powering off a Storwize V7000 Gen2
node canister ............ 282
Procedure: Collecting information for support 283
Procedure: Rescuing node canister software
from another node (node rescue) ...... 283
Procedure: FCoE host-linking ....... 285
Procedure: Removing and replacing the lid of a
Storwize V7000 Gen2 node canister ..... 285
Procedure: Understanding Storwize V7000 Gen2
volume dependencies ......... 286
Storwize V7000 replaceable units ....... 287
Storwize V7000 2076-524 Gen2 replaceable units 288
Storwize V7000 2076-1xx and 2076-3xx Gen1
replaceable units ........... 291
Replacing parts............. 294
Preparing to remove and replace parts .... 295
Replacing a node canister ........ 295
Replacing a fan module ......... 298
Replacing an expansion canister ...... 299
Replacing an SFP transceiver ....... 302
Replacing a power supply unit for a control
enclosure .............. 305
Replacing a power supply unit for an expansion
enclosure .............. 310
Replacing the battery in a node canister ... 315
Replacing a battery in a power supply unit .. 316
Releasing the cable retention bracket .... 320
Replacing a 3.5 inch drive assembly or blank
carrier ............... 320
Replacing a 2.5 inch drive assembly or blank
carrier ............... 324
Replacing enclosure end caps ....... 328
Replacing a SAS cable to an expansion
enclosure .............. 329
Replacing a control enclosure chassis .... 332
Replacing an expansion enclosure chassis ... 343
Replacing a Storwize V7000 Gen2 enclosure
midplane .............. 350
Replacing the support rails ........ 362
Replacing node canister memory modules... 369
Replacing a host interface adapter ..... 371
Replacing a CMOS battery ........ 374
General storage system procedures ...... 375
Procedure: SAN problem determination ... 375
iSCSI performance analysis and tuning .... 376
Fibre Channel link failures ........ 378
Ethernet iSCSI host-link problems ..... 379
Recover system procedure ......... 380
When to run the recover system procedure .. 382
Fix hardware errors .......... 382
Removing system information for node canisters
with error code 550 or error code 578 using the
service assistant ........... 384
Running system recovery using the service
assistant .............. 384
Recovering from offline volumes using the CLI 386
What to check after running the system
recovery .............. 387
Backing up and restoring the system configuration 389
Backing up the system configuration using the
CLI................ 390
Restoring the system configuration ..... 392
Deleting backup configuration files using the
CLI................ 394
Chapter 6. Call home and remote
support .............. 397
Testing a call home connection ....... 397
Establishing an AOS connection ....... 397
Establishing a lights-out AOS connection ... 397
Establishing a lights-on AOS connection ... 398
Chapter 7. Recovery procedures ... 401
User ID and system access ......... 401
Accessing a file module as root ...... 401
Recovering from losing the root password... 401
Resetting the NAS ssh key for configuration
communications ........... 402
Working with NFS clients that fail to mount
NFS shares after a client IP change ..... 403
Working with file modules that report a stale
NFS file handle............ 403
File module-related issues ......... 404
Restoring System x firmware (BIOS) settings 404
Recovering from file systems that are offline
after the volumes came back online ..... 406
Recovering from a multipath event ..... 406
Recovering from an NFSD service error ... 407
Recovering from an SCM error ...... 407
Recovering from an httpd service error.... 408
Recovering from an sshd_data service error .. 408
Recovering from an sshd_int service error ... 409
Recovering from an sshd_mgmt service error 409
Recovering from an sshd_service service error 409
Control enclosure-related issues ....... 410
Recovering when file volumes come back online 410
Recovering when a file volume does not come
back online ............. 410
Recovering from offline compressed volumes 410
Recovering from a 1001 error code ..... 411
Restoring data ............. 414
Restoring asynchronous data ....... 414
Restoring Tivoli Storage Manager data .... 415
Upgrade recovery ............ 416
Chapter 8. Troubleshooting
compressed file systems ...... 427
Recovery procedure: Increase capacity of the
storage pool .............. 428
Recovery procedure: Adding additional capacity
for offline compressed file systems ...... 429
Monitoring file system compression ...... 432
Appendix. Accessibility features for
IBM Storwize V7000 Unified ..... 435
Notices .............. 437
Trademarks .............. 439
Contents v