Digital Video Recorder User Manual 
 
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Figure 13-11 Physical Disk Settings Interface 
Step 2 Select a disk and click    to set it as the hot spare disk. 
   
Only global hot spare mode is supported. 
13.2.1 Automatically Rebuilding Array 
Purpose 
When the virtual disk is in Degraded status, the device can start rebuilding the array automatically 
with the hot spare disk to ensure the high security and reliability of the data. 
Step 1 Enter the Array Settings interface. The status of the array is Degraded. Since the hot spare 
disk is configured, the system will automatically start rebuilding using it. 
Menu > HDD > RAID > Array 
 
Figure 13-12 Array Settings Interface 
If there is no hot spare disk after rebuilding, it is recommended to install a HDD into the device 
and set is as a hot spare disk to ensure the high security and reliability of the array.   
13.2.2 Manually Rebuilding Array 
Purpose 
If the hot spare disk has not been configured, you can rebuild the array manually to restore the 
array when the virtual disk is in Degraded status.