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).
The new RAID group must have the same RAID type as all existing RAID groups in the pool.
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.