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pdisk descriptions

The pdisk description indicates whether the disk is configured as an Array Member, Hot Spare, or an Array Candidate.

For an array, the description column of the List SAS Disk Array Configuration screen indicates the RAID level of the array. The description column for a pdisk indicates whether the disk is configured as an Array Member, Hot Spare, or an Array Candidate.

Array Member
A 528 bytes per sector pdisk that is configured as a member of an array.
Hot Spare
A 528 bytes per sector pdisk that can be used by the controller to automatically replace a Failed disk in a Degraded RAID 5, 6, or 10 disk array. A Hot Spare disk is useful only if its capacity is greater than or equal to the capacity of the smallest disk in an array that becomes Degraded. For more information about hot spare disks, see Using hot spare disks.
Array Candidate
A 528 bytes per sector pdisk that is a candidate for becoming an Array Member or a Hot Spare.