The state of a RAID level-1, level-1E, level-5, level-5EE, level-6, level-10, or level-50 logical device that contains a failed drive. If a degraded logical device sustains another drive failure the data cannot be recovered.
Note:
A RAID level-6 logical device moves to the degraded state if one or two
drives fail. To determine the number of drive failures, right-click the drive
in the Adaptec Storage Manager, select Properties, then select the Status tab.
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