Expanding a Storage Pool By Adding a New RAID Group
You can expand the capacity of a storage pool by creating a new RAID group and adding it to the pool. QuTS hero combines the new group with the other RAID groups in the storage pool using striping (RAID 0).
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The new RAID group must have the same RAID type as all existing RAID groups in the pool.
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Adding a RAID group to a pool may change the RAID type of the pool.
The number of required disks for expansion depends on the current RAID type of the specified pool.
Pool RAID Type |
Disks Required to Expand Pool |
Pool RAID Type After Expansion |
---|---|---|
RAID 0 |
≥ 1 |
RAID 0 |
RAID 1 |
2 |
RAID 10 |
RAID 5 |
≥ 3 |
RAID 50 |
RAID 6 |
≥ 4 |
RAID 60 |
RAID-TP |
≥ 5 |
RAID-TP |
Triple Mirror |
Multiple of 3 |
Triple Mirror |
RAID 10 |
Multiple of 2 |
RAID 10 |
RAID 50 |
≥ 3 for each additional RAID 5 group |
RAID 50 |
RAID 60 |
≥ 4 for each additional RAID 6 group |
RAID 60 |
QuTS hero begins expanding the storage pool. The status of the pool changes to Expanding, and then changes back to Ready after expansion is finished.