User manual

Promise Array Management
68
Array Offline
When a disk drive fails on a non-fault-tolerant array (RAID 0) for any reason, the
Array goes Offline. The array cannot read or write data. All of the data on the
array will be lost unless the failed drive is restored to operation.
A fault-tolerant array (RAID 1 or 0+1) will go Offline if two disk drives fail.
An Array Offline
icon displays in Tree View and the alarm (if enabled) beeps
quickly to call your attention to the condition.
Your first action is to identify which disk drive has failed.
1. Click on the Disk View icon to expand it.
2. Click on the Array View icon to expand it.
3. Look for the drive that was part of this Array but is now missing. Observe
and compare the disk drives under the Controller with those under the Array.
In the example above, two disk drives attached to the FastTrak controller
were assigned to a RAID 0 array.
The disk drive on Channel 1 is present, but the second drive is not. The
second is the failed drive.
4. When you have identified the failed drive, check its connections and run the
drive manufacturer's diagnostic program in an effort to restore the drive to
operation.
There is no Rebuild function for a non-fault-tolerant array.