NAS State |
Action |
---|---|
No volumes or storage pools |
Click New Storage Pool. |
One or more volumes or storage pools |
Click Create, and then select New Storage Pool. |
The Create Storage Pool Wizard window opens.
You cannot select disks from multiple expansion units.
If the expansion unit is disconnected from the NAS, the storage pool becomes inaccessible until it is reconnected.
For data safety, you cannot select disks that have the status Warning.
The status In Use means that a disk is currently formatted as an external disk, and may contain current user data.
If you select a disk with the status In Use, QTS will temporarily stop all disk storage services on the NAS in order to unmount the disk, and then delete all data and partitions on the disk.
All data on the selected disks will be deleted.
QTS displays all available RAID types and automatically selects the most optimized RAID type.
Number of disks |
Supported RAID Types |
Default RAID Type |
---|---|---|
One |
Single |
Single |
Two |
JBOD, RAID 0, RAID 1 |
RAID 1 |
Three |
JBOD, RAID 0, RAID 5 |
RAID 5 |
Four |
JBOD, RAID 0, RAID 5, RAID 6, RAID 10 |
RAID 5 |
Five |
JBOD, RAID 0, RAID 5, RAID 6 |
RAID 6 |
Six or more |
JBOD, RAID 0, RAID 5, RAID 6, RAID 10, RAID 50 Note:
RAID 10 requires an even number of disks. |
RAID 6 |
Eight or more |
JBOD, RAID 0, RAID 5, RAID 6, RAID 10, RAID 50, RAID 60 |
RAID 6 |
Use the default RAID type if you are unsure of which option to choose.
For details, see RAID Types.
The designated hot spare automatically replaces any disk in the RAID group that fails.
For RAID 50 or RAID 60, a spare disk must be configured later. You should configure a global spare disk so that all subgroups share the same spare disk.
The selected disks are divided evenly into the specified number of RAID 5 or 6 groups.
A higher number of subgroups results in faster RAID rebuilding, increased disk failure tolerance, and better performance if all the disks are SSDs.
A lower number of subgroups results in more storage capacity, and better performance if all the disks are HDDs.
If a RAID group is divided unevenly, the excess space becomes unavailable. For example, 10 disks divided into 3 subgroups of 3 disks, 3 disks, and 4 disks will provide only 9 disks of storage capacity.
Over-provisioning reserves a percentage of SSD storage space on each disk in the RAID group to improve write performance and extend the disk's lifespan. You can decrease the amount of space reserved for over-provisioning after QTS has created the RAID group.
To determine the optimal amount of over-provisioning for your SSDs, download and run SSD Profiling Tool from App Center.
QTS issues a warning notification when the percentage of used pool space is equal to or above the specified threshold.
A confirmation message appears.
QTS creates the storage pool and then displays the information on the Storage/Snapshots screen.