Storage System Hardware Owner's Manual

Contents 15
Unidentified Devices . . . . . . . . . . . . . . . . . . 236
Recovering From an Unidentified Storage Array
. . . . 236
Starting or Restarting the Host Context
Agent Software
. . . . . . . . . . . . . . . . . . . . . 239
19 Troubleshooting: Your Array . . . . . . . . . 241
Safety First—For you and Your Array . . . . . . . . . . 241
Troubleshooting Storage Array Startup Failure . . . . . 241
Troubleshooting Loss of Communication
. . . . . . . . 241
Troubleshooting External Connections
. . . . . . . . . 241
Troubleshooting Power Supply/Cooling
Fan Module
. . . . . . . . . . . . . . . . . . . . . . . . 242
Troubleshooting Array Cooling Problems . . . . . . . . 243
Troubleshooting Expansion Enclosure
Management Modules
. . . . . . . . . . . . . . . . . . 243
Troubleshooting RAID Controller Modules . . . . . . . 244
Troubleshooting Hard Drives
. . . . . . . . . . . . . . 246
Troubleshooting Array and Expansion
Enclosure Connections
. . . . . . . . . . . . . . . . . 247
Troubleshooting a Wet Storage Array
. . . . . . . . . . 248
Troubleshooting a Damaged Array
. . . . . . . . . . . 249
Troubleshooting RAID Controller Modules
. . . . . . . 249
Conditions
. . . . . . . . . . . . . . . . . . . . . . 249
Invalid Storage Array
. . . . . . . . . . . . . . . . 250
ECC Errors
. . . . . . . . . . . . . . . . . . . . . 250
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