ESS Series
User’s Manual
93
7
Appendix B--- Disk Hot Swap Operation
The hot swap operation means you can remove disk without shut down the system and unplug
the power cable. It enhances the system recovery capability and has sound expansibility and
flexibility.
The hot swap has the following situations:
When the disk is free, hot swap operation will not result in system damage.
When the disk is working, hot swap operation will not result in system malfunction, data loss (or
can resume data).
a) From disk to RAID interface.
b) Click the edit button after the corresponding RAID group, click Remove button of the
damaged disk and click Save button. See Figure 7-1.
Figure 7-1
c)
Remove the disk from the HDD bracket,
Usually we do not recommend hot swap operation when system is running properly and
there is no damaged disk.
The hot swap disk shall be set as RAID6/RAID5/RAID1.
The hot swap disk group shall be in working status.
RAID5 and RAID 6 can only hot swap (add/remove) one disk, RAID6 can only hot swap
(add/remove) two disks. After the hot swap operation, the RAID status becomes
degrading and one more hot swap operation will result in
data loss of the whole group!
You can only add a disk after you remove one disk from the same RAID group. It is to guarantee
data security.