Pegasus R6, R4 Product Manual
110
Disk Array and Logical Drive Problems
Disk array and logical drive troubleshooting includes:
• Disk Array Degraded/Logical Drive Critical (page 110)
• Disk Array Offline/Logical Drive Offline (page 111)
• Repairing an Offline Disk Array or Logical Drive (page 111)
• Rebuilding a Disk Array (page 112)
• Incomplete Array (page 112)
• Unreadable Disk Warning (page 114)
Disk array problems typically result from a physical drive failure. The most
common problem is a degraded disk array. The RAID controller can rebuild a
degraded disk array. See “Rebuilding a Disk Array” on page 112.
Disk Array Degraded/Logical Drive Critical
Disk arrays are made up of physical drives. Logical drives are created on the disk
array.
When one of the physical drives in a disk array fails:
• The operational status of the disk array becomes Critical.
• The operational status of the logical drives becomes Critical or Degraded.
• The operational status of the physical drive becomes Dead or Offline.
The Promise Utility reports these conditions in the following places:
• Dashboard icon – A yellow ! icon beside the disk arrays, logical drives,
and physical drives under System Status.
• Physical Drive icon – Physical drives are shown Dead or Offline and marked
with a red X icon, or Missing.
• Logical Drive icon – Disk Array and Logical Drive are marked Critical with a
yellow ! icon.
RAID 6 logical drives are marked:
• Degraded with a yellow ! icon when ONE physical drive is offline.
• Critical with a yellow ! icon when TWO physical drives are offline.
RAID 0 logical drives show Offline status and a red X icon.
• Events icon – Logs a Major event for the logical drives and a Warning event
for the physical drive.
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