The storage capacity of a static volume can be expanded by creating a new RAID group and then adding it to the volume. This operation can be performed while the volume is online and accessible to users. QTS writes data linearly to storage pools containing multiple RAID groups. This means that QTS writes data to a RAID group until the group is full before writing data to the next RAID group.
If a static volume contains multiple RAID groups and one RAID group fails, all data on the volume will be lost. Ensure that you have a complete data backup plan.
To expand a RAID 50 or RAID 60 pool, you must create a new RAID 50 or 60 group with the same number of disks and sub-groups as the original pool. It is not possible to add additional sub-groups.
QTS creates the new RAID group and then starts rebuilding the volume. The capacity of the volume increases after RAID rebuilding is finished.