Virtual Disk States; Failure States; Failure Status By Virtual Disk Raid Level - Dell PowerEdge RAID Controller S100 User Manual

Table B-3. Virtual Disk States
State Definition
Degraded A physical disk in a redundant virtual disk has failed. Additional failures
might result in lost data.
Failed One or more physical disks have failed. The virtual disk has gone offline.
The virtual disk cannot restore the data.
Non-Raid A Non-Raid physical disk is automatically linked to a Non-Raid virtual
disk for use with a PERC S100 controller or PERC S300 controller.
Normal A virtual disk has been created and its preparation process has been
completed.
Ready A redundant virtual disk has been created, and is ready for additional
preparation.

Failure States

Whether a virtual disk is marked as Failed or Degraded depends upon what
RAID level virtual disk it is, and how many physical disks of the virtual disk
have failed. In Table B-4 note the changes in state.
If a rescan of all channels is performed after disconnecting a physical disk, the
state of every virtual disk using the disconnected physical disk changes from
the Ready state to either the Failed or Degraded state, depending on the
virtual disk's RAID level.
For additional information about rescanning to update storage configuration
changes, see the OpenManage documentation available on the Dell Support
website at support.dell.com/manuals.
Table B-4. Failure Status by Virtual Disk RAID Level
Virtual Disk RAID Level
RAID 1, RAID 5
RAID 10
Volume, RAID 0
RAID 1 or RAID 5
RAID 10
Failure Status Description
Degraded A single physical disk fails.
Degraded A single physical disk fails in one or
more of the mirrored sets.
Failed A single physical disk fails.
Failed Two or more physical disks fail.
Failed Two physical disks in a mirrored set
fail.
Appendix B
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