Dell PowerEdge RAID Controller S110 - Manual (Page 49)

Troubleshooting 47
A Virtual Disk is in a Degraded State
A physical disk was removed
• Install the original physical disk, if it was inadvertently removed, or replace
it with a new or used physical disk.
• Initialize a new physical disk. Perform a Rescan for all physical disks that
are replaced.
• If the physical disk was not removed, check that its cables are correctly
installed.
Physical or mechanical problems with the physical disk
• Check if the physical disk in the virtual disk has failed.
• If a physical disk was recently removed and replaced, check that it is
correctly positioned in the backplane. Check the cable connections at the
physical disk and at the motherboard. Perform a rescan.
The virtual disk has lost redundancy
• One or more physical disks in the virtual disk have failed. Due to the failed
physical disk or disks, the virtual disk is no longer maintaining redundant
(mirrored or parity) data. The failure of an additional physical disk results
in lost data.
• Replace the physical disk or disks. Rebuild the physical disk using Storage
Management. See the applicable Storage Management screen, located on
the Dell Support website at dell.com/support/manuals.
Corrupted metadata in the virtual disk
1 Delete the virtual disk that has the failed metadata.
2 Assign the physical disk as a hot spare to rebuild a redundant virtual disk.
3 To create a non-redundant virtual disk, delete and rebuild the data on a
virtual disk, and restore the data from a backup storage source.
Cannot Assign a Dedicated Hot Spare to a Virtual Disk
The RAID level does not allow a dedicated hot spare to be created
Hot spares cannot be created for Volume or RAID 0 virtual disks.
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