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Add SSDs to an SSD storage pool in ONTAP

Contributors netapp-thomi netapp-aherbin netapp-lenida netapp-dbagwell
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When you add solid state drives (SSDs) to an SSD storage pool, you increase the storage pool's physical and usable sizes and allocation unit size. The larger allocation unit size also affects allocation units that have already been allocated to local tiers.

Before you begin

You must have determined that this operation will not cause you to exceed the cache limit for your HA pair. ONTAP does not prevent you from exceeding the cache limit when you add SSDs to an SSD storage pool, and doing so can render the newly added storage capacity unavailable for use.

About this task

When you add SSDs to an existing SSD storage pool, the SSDs must be owned by one node or the other of the same HA pair that already owned the existing SSDs in the storage pool. You can add SSDs that are owned by either node of the HA pair.

The SSD you add to the storage pool must be the same size as disk currently used in the storage pool.

System Manager

Beginning with ONTAP 9.12.1, you can use System Manager to add SSDs to an SSD storage pool.

Steps

  1. Click Storage > Tiers and locate the Storage Pools section.

  2. Locate the storage pool, click Menu options icon, and select Add Disks.

  3. Choose the disk type and select the number of disks.

  4. Review the estimate cache size.