Promise Technology FastTrak SX Series Version 4.4 - Manual (Page 78)

Promise Array Management
74
Array Critical
When a disk drive fails on a fault-tolerant array (RAID 1, 0+1 and 5) for any
reason, the Array goes Critical. The array can still read and write data but fault
tolerance has been lost.
An Array Critical icon displays in Tree View and the alarm (if enabled) beeps
quickly to call your attention to the condition.
Figure 72. An Array in Critical condition highlighted in Tree View (left)
and shown in red in Information View (right).
Your first action is to identify which disk drive has failed.
1. Click on the Controller icon to expand it.
2. Click on the Array icon to expand it.
3. Observe and compare the disk drives under the Controller with those under
the Array.
Figure 73. The drives under the Controller should match those under the
Array.
Drives 1, 2 and 3 are assigned
to this array.
Only drives 1 and 3 appear in
the array.
Drive 2 is suspect.