User Manual
DS-73xxHUI-K4, DS-73xxHQI-K4, DS-90xxHUI-K8 DVR User Manual 
UM DS-73xxHUI-K4 DS-73xxHQI-K4 DS-90xxHUI-K8 092017NA  168 
Before You Start 
Make sure the hot spare disk is configured. 
1.  Enter the Physical Disk Settings interface to configure the hot spare disk. 
Figure 228, Physical Disk Settings Interface 
2.  Select a disk and click    to set it as the hot spare disk. 
Only global hot spare mode is supported. 
12.1.5  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. 
1.  Enter the Array Settings interface, Menu > System Configuration > HDD > 
RAID > Array. The status of the array is Degraded. Since the hot spare disk 
is configured, the system will automatically start rebuilding using it. 










