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10.2.2 Rebuild an Array
The array status includes Functional, Degraded, and Offline. To ensure the high security and
reliability of the data stored in an array, take immediate and proper maintenance of the arrays
according its status.
Functional
No disk loss in the array.
Offline
The number of lost disks has exceeded the limit.
Degraded
If any HDD fails in the array, the array degrades. Restore it to Functional status by rebuilding the
array.
Configure a Hot Spare Disk
The hot spare disk is required for the disk array automatic rebuilding.
Steps
1. Go to Storage → RAID Setup → Physical Disk.
2. Click
of an available HDD to set it as the hot spare disk.
Automatically Rebuild an Array
The video recorder can automatically rebuild degraded arrays with the hot spare disks.
Before You Start
Create hot spare disks. For details, refer to Configure a Hot Spare Disk.
Steps
1. Go to Storage → RAID Setup → Array.
Network Video Recorder User Manual
Figure 10-10 Physical Disk
149
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