Chapter 5: Troubleshooting
111
If there is no spare drive in the Pegasus unit, you must provide the
replacement drive. See “Replacing a Physical Drive” on page 107.
Disk Array Offline/Logical Drive Offline
Disk arrays are made up of physical drives. Logical drives are created on the disk
array. When a disk array and its logical drives go Offline, the data stored in the
logical drives is no longer accessible.
RAID 0 logical drives go Offline when ONE physical drive is removed or fails.
RAID 1, 1E, 5, and 10 logical drives go Offline when TWO physical drives are
removed or fail.
RAID 6 logical drives go Offline when THREE physical drives are removed or
fail.
The Promise Utility reports these conditions in the following places:
• Dashboard icon – A red X icon appears beside the disk arrays, logical
drives, and physical drives under System Status.
• Physical Drive icon – Physical drives are shown Dead, Offline, or Missing.
• Logical Drive icon – Disk Array and Logical Drives are marked with a red X
icon.
• Event icon – Major event for the logical drive and a Warning event for the
physical drive.
Under Background Activities, no Rebuild takes place. See Repairing, below.
Repairing an Offline Disk Array or Logical Drive
RAID 1, 1E, 5, 6, and 10 Logical Drives
If a fault-tolerant logical drive, RAID 1, 1E, 5, 6, and 10, goes Offline, it may
be possible to recover your data.
RAID 0 Logical Drives
If a logical drive based on a non-fault-tolerant disk array, RAID 0, goes offline, all
of the data on the logical drive is lost.
To recreate your logical drive:
1. Identify the failed physical drive.
Warning
Take no further corrective action until you have consulted with
Technical Support! See page 121.
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