UEBO S400 - Manual (Page 58)

UEBO S400 User Manual
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Repair a Disk Group
After the RAID level is degraded (the RAID data and the relevant file are not lost but
their security is lowered), click Repair to repair the disk group when the free disks
with the same capacity exist.
The security of the RAID data and the relevant file can be
improved through the repairing the RAID.
Caution:
Do not plug in the eSATA devices when repairing the RAID.
Expand a Disk Group