Dell PowerEdge RAID Controller S100 - Manual (Page 65)

Troubleshooting 65
Table 7-3. Warning Messages: Dell Inc. PERC S100 or PERC S300 Adapter BIOS
Warning Message Corrective Action
WARNING: Found
virtual disks
that are
Degraded This warning message appears when at least one virtual disk is
in a Degraded state and Pause if Degraded is set to ON at
the PERC Virtual Disk Management utility.
The following message appears after the warning is displayed:
--- Press <Enter> to continue, or <CTRL><R>
to enter setup ---
Press <Enter> to allow the operating system to continue with
the boot sequence, or press <Ctrl><R> to enter into the
PERC Virtual Disk Management utility to investigate the cause
of the Degraded virtual disk.
To investigate the cause, check for the following:
• Whether a physical disk in the virtual disk has failed or has
gone offline. Check the status at the Physical Disks
field. A Degraded status depends on the RAID level of the
virtual disk and the number of physical disks that have failed:
– For a virtual disk at RAID 1 or RAID 5, a single physical disk
failure causes a Degraded status.
– For a virtual disk at RAID 10, the failure of a physical disk in
each of the mirror sets creates a Degraded status for the
RAID 10. The failure of two physical disks in the same
mirror set creates a Failed status for the RAID 10.
• Whether the controller has failed, due to a firmware failure or
a component failure. A failed controller causes a virtual disk
not to boot.
For the virtual disk to recover from Degraded status, the failed
physical disk must be replaced and the virtual disk must be
rebuilt, using Dell OpenManage Server Administrator Storage
Management. When the rebuild operation is completed, the
virtual disk status changes from Degraded to Ready. For a
description of the rebuild function, see Storage Management,
located on the Dell Support website at
support.dell.com/manuals.
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