Dell PowerEdge RAID Controller 6E - Manual (Page 119)

Troubleshooting
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Table 7-2 describes the BBU-related error messages and warnings.
Virtual Disks Degraded
A redundant virtual disk is in a degraded state when one or more physical disks
have failed or are inaccessible. For example, if a RAID 1 virtual disk consists of
two physical disks and one of then fails or become inaccessible, the virtual
disk become degraded.
To recover a virtual disk from a degraded state, you must replace the failed
physical disk and rebuild it. Once the rebuilding process is complete, the virtual
disk state changes from degraded to optimal. For information on rebuilding the
disk, see "Performing a Manual Rebuild of an Individual Physical Disk" on
page 108.
Table 7-2. Backup Battery Unit Errors and Warnings
Message Meaning
Memory/Battery problems
were detected. The
adapter has recovered,
but cached data was
lost. Press any key to
continue.
This message displays under the following
conditions:
• The adapter detects that the cache in the
controller cache has not yet been written to the
disk subsystem.
• The controller detects an Error-Correcting
Code (ECC) error while performing its cache
checking routine during initialization.
• The controller discards the cache rather than
sending it to the disk subsystem because the
data integrity cannot be guaranteed.
To resolve this problem, allow the battery to
charge fully. If the problem persists, the battery
or adapter DIMM might be faulty; contact
Dell Technical Support.
Dell_PERC6.2_UG.book Page 119 Wednesday, June 24, 2009 6:08 PM