For details on hardware and software requirements, see Qtier Requirements.
Immediately after creating a Qtier storage pool, QTS starts moving data between tiers. This data migration may affect system storage performance. You should create the Qtier storage pool during a period of low NAS activity.
Current NAS State |
Action |
---|---|
No volumes or storage pools |
Click New Storage Pool |
One or more volumes or storage pools |
Select Create > New Storage Pool |
The Create Storage Pool Wizard opens.
If you create the ultra-high speed tier using disks installed in a TL-series expansion unit, then the two tiers (high speed, capacity) must consist of disks from the same expansion unit.
For details, see RAID Types.
At least two different tiers are required in a Qtier storage pool.
For details, see RAID Types.
At least two different tiers are required in a Qtier storage pool.
For details, see RAID Types.
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.
All data on the selected disks will be deleted.
QTS creates the Qtier storage pool and starts moving data between tiers. QTS starts automatically tiering data after it has spent sufficient time analyzing data access patterns.