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Chapter 3 Storage Arrays 3-17
a. To run the Recovery Guru, select the Recovery Guru toolbar button in the Array
Management Window.
b. Complete the recovery procedure.
If the Recovery Guru directs you to replace a failed component, use the individual
lights on the modules to locate the failed component. For troubleshooting
procedures, refer to “Troubleshooting and Recovery” on page 3-22.
Note – If a fault requires you to power off an attached module, you may need to
cycle the power on all remaining modules in the storage array. Before you power off
any attached modules, contact technical support.
c. When the recovery procedure is completed, select Recheck in the Recovery
Guru to re-run the Recovery Guru and to ensure that the problem has been
corrected.
d. If the problem persists, contact technical support.
Caution – Potential data corruption. An abrupt power loss to any module in a
storage array can cause data corruption, especially if the power loss occurs when
data is being written to a disk or if the power loss occurs when write back caching is
enabled and data is being downloaded to cache memory. Before turning off power to
the modules, always wait until the Cache Active light turns off and all drive Active
lights stop flashing.
6. Check the lights on the front of each attached drive module, and verify that all
drive Active lights are on but not flashing.
If one or more drive Active lights are flashing, then data is being written to or from
the disks. Wait for all drive Active lights to stop flashing, and then go to step 7.
7. Check the Cache Active light, and then choose one of the following steps, based
on the status of the light.
Cache Active light is off - The cache contains no data. Go to step 8.
Cache Active light is illuminated - Write-back caching is enabled, and data is in the
cache. Wait for the data to clear from the cache memory and for the Fast WriteCache
or Cache Active light to turn off, and then go to step 8. For information on cache
memory protection and settings, refer to the Array Management Window online
help.