Dell PowerEdge RAID Controller 6i - Manual (Page 117)

Troubleshooting
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Table 7-2 describes the BBU-related error messages and warnings that display
for the BIOS.
Virtual Disks Degraded
A redundant virtual disk is in a degraded state when one or more physical disks
has failed or is inaccessible. For example, a RAID 1 virtual disk consisting of
two physical disks can sustain one physical disk in a failed or inaccessible state
failure and become a degraded virtual disk.
To recover from a degraded state, the failed physical disk must be replaced and
allowed to rebuild. Upon successful completion of the rebuild process, the
virtual disk state changes from degraded to optimal. For the rebuild procedure,
see "Performing a Manual Rebuild of an Individual Physical Disk" on page 107.
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 occurs 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 then 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. In that case,
contact Dell Technical Support.
Dell_PERC6.1_UG.book Page 117 Wednesday, April 15, 2009 4:18 PM