Expanding a storage pool by adding disks to a RAID group
The total storage capacity of a storage pool can be expanded by adding one or more additional disks to a RAID group. This operation can be performed while the pool is online and accessible to users.
To expand a RAID 50 or RAID 60 group, every sub-group must be expanded with the same number of disks.
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Verify the following:
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The storage pool you want to expand contains at least one RAID group of type: RAID 5, RAID 6, RAID 50, RAID 60, or RAID-TP.
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The NAS contains one or more free disks. Each free disk must be the same type as the other disks in the RAID group (either HDD or SSD), and have a capacity that is greater than or equal to the smallest disk in the group.
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The status of the storage pool that you want to expand is Ready or Warning (Threshold Reached).
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- Go to Storage & Snapshots > Storage > Storage/Snapshots.
- Select a storage pool.
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Click Manage.
The Storage Pool Management window opens.
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Select Action > Expand
Pool.
The Expanding Storage Pool Wizard window opens.
- Select Add new disk(s) to an existing RAID group.
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Select a RAID group.
The group must be of type: RAID 5, RAID 6, RAID 50, RAID 60, or RAID-TP.
- Click Next.
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Select one or more disks.
Important:
The maximum number of disks you can select depends on the RAID type after expansion. Subtract the existing number of disks from the RAID type's maximum total number of disks in order to determine the maximum selectable number of disks. For RAID 50 or 60, further divide this number by the number of sub-groups.
RAID Type
Maximum Total Number of Disks
RAID 5
16
RAID 6
16
RAID 50
30
RAID 60
30
RAID-TP
24
Warning:All data on the selected disks will be deleted.
- Click Next.
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Click Expand.
A confirmation message appears.
- Click OK.
- Optional: For a RAID 50 or RAID 60 pool, repeat these steps for each sub-group.
QuTS hero starts rebuilding the RAID group. The storage capacity of the pool increases after RAID rebuilding is finished.