Removing / Replacing A Drive; What If A Disk Fails; Swapping Drives - Accusys ACUTA User Manual

Chapter 4 – Setting up an array

Removing / replacing a drive

What if a disk fails?

If a disk drive fails, the disk status indicator of the disk carrier will light red and the alarm will
sound. When this happens, you should replace the failed IDE disk.

Swapping drives

The hot swap function for RAID 5 arrays enables failed disks to be swapped while the array is
powered on. RAID rebuilding will be processed automatically in the background and the
ACUTA RAID subsystem will record its progress. If the host system is shut down or powered
off abnormally, the ACUTA RAID subsystem will continue the disk rebuilding process after
power is turned on again.
The failure or removal of a single drive in a RAID5 array will not lead to
failure of the array. The failure or removal of a single drive in a RAID0 array
will lead to loss of all data on the array and the entire array must be
re-initialized.
There is no need to immediately replace a failed disk in a RAID 5+spare
array. The hot spare disk will be brought on line automatically.
The alarm can be silenced by pressing the Enter / Mute button to the right of
the display.
A hard disk in a RAID 5 array should not be replaced when the system is
turned off. Doing so may leads to loss of data. Always hot swap disks in a
RAID5 array.
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