RA4000e Series User manual
32
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 disk.
The failure or removal of a single drive in a R5 array will not lead to failure of
the array. The failure or removal of a single drive in a R0 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 R5+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.
Swapping drives
The hot swap function for R5 arrays enables failed disks to be swapped while the array is
powered on. RAID rebuilding will be processed automatically in the background and the
RA4000e Series will record its progress. If the host system is shut down or powered off
abnormally, the RA4000e Series will continue the disk rebuilding process after power is turned
on again.
A hard disk in a R5 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 R5 array.