Glossary-3
Glossary
consistency check command
The controller continuously performs a verification on a redundant
array to check data integrity. In the case of RAID 1 or 10,
consistency checks assure that the data between like blocks match.
In the case of a RAID 5, consistency checks assure that data in the
stripe and the calculated parity for the stripe match.
container
See
.
D
dead partition
See
.
degraded
A redundant (for example, a RAID 1) array in which one member
failed. The data is intact but redundancy has been compromised.
Any further failure would cause the array to fail and result in data
loss.
dirty data
Data that has been written to a
, but which has not been
“flushed” out to its final destination.
disk
A nonremovable platter in a hard drive, or removable media used
in a CD drive, floppy disk drive, or Zip drive. See also
disk ID
Unique disk identifier that consists of the channel number, ID, and
LUN (channel:ID:LUN), for example, 1:04:0. See also
drive
Device used for storing data. May contain one or more removable
or nonremovable, writable or read-only media. See also