Operation Manual

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group, configure a spare drive, enable a bitmap and recover a RAID group for a chosen
storage pool, while the data contained in the RAID group remains intact.
Expanding storage pool capacity
With this function, RAID group capacity can be expanded by replacing hard disk drives in
an array one by one. This option is supported for the following RAID types: RAID 1, RAID
5, RAID 6 and RAID 10. Follow the steps below to expand a RAID group:
1. Select a RAID group and click “Manage” > “Expand Capacity”.
2. Select at least one hard disk drive. After the description displays “Please remove
this drive”, remove the hard disk drive from the NAS or expansion enclosure.