Rebuilding Array; Automatically Rebuilding Array - HIKVISION DS-7200HGHI-SH Series User Manual

18. Set the Hot Spare Type of the selected HDD to Global Hot Spare or the specified hot
spare for the existing array.
19. Global Hot Spare: It can be used as the hot spare for any array created in the system.
20. Specified Hot Spare (e.g. test): It can be used as the hot spare for the specified array
only.
21. Click OK to finish the settings.
Note:
When the auto-rebuild function is enabled, the hot spare disk will be automatically used for array
rebuilding if the virtual disk is in Degraded status.
Note:
At least 2 HDDs must be installed for RAID 0.
2 HDDs needs to be configured for RAID 1.
At least 3 HDDs must be installed for RAID 5.
4/6/8 HDDs need to be cofigured for RAID 10.
Note:
A physical disk count error attention box will pop-up, if the number of HDDs you select is not
compatible with the requirement of the RAID level.
Note:
The device supports creating at most 8 virtual disks.
Note:
It is recommeded to create one virtual disk of an array.

Rebuilding Array

The working status of array includes Functional, Degraded and Offline. When there is no disk
loss in the array, the working status of array will change to Functional; when the number of lost
disks has exceeded the limit, the working status of array will change to Offline; in other
conditions, the working status is Degraded. When the virtual disk is in Degraded status, you can
restore it to Functional by array rebuilding.

Automatically Rebuilding Array

Enable Auto-rebuild can start rebuilding the array automatically with the hot spare disk when the
virtual disk is in Degraded status to ensure the high security and reliability of the data. To set
auto-rebuild:
1. Enter the Firmware interface by going to Menu > System Configuration > RAID >
Firmware, as shown in Figure 138.
119