Disk Array Degraded; Disk Array Offline; Disk Array Management - D-Link DNS-1250-04 User Manual

 RAID level migration
 Disk array transport

Disk Array Degraded

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, a
RAID 1, 5 and 10 volume will (or in the case of a RAID 6, two drives must
fail):
 The operational status of the disk array becomes Degraded.
 The operational status of logical drives becomes Critical.
 The operational status of physical drive becomes Dead or Offline.

Disk Array Offline

When a disk array and its logical drives go Offline, the data stored in the
logical drives is no longer accessible.
 Logical drives based on fault-tolerant disk arrays, RAID 1, 5, and 10, go
Offline when two physical drives are removed or fail.
 RAID 6 can continue to operate when two physical drives are removed
or fail. It will fail when three physical drives are removed or fail.
 Logical drives based on non-fault tolerant disk arrays, RAID 0, go
Offline when a one physical drive is removed or fails.
3.7.4

Disk Array Management

To view disk array information:
1. Click the Storage tab.
2. Click the Disk Array button.
3. Mouse-over the disk array you want to see and click the View button.
Disk array information includes:
 Disk Array ID – DA0, DA1, DA2, etc.
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