Multi-tier pool

With Dynamic Tiering, you can enable the Multi-Tier pool option for an existing pool. The default is to allow tier relocation for each DP-VOL. Only the DP-VOLs for which tier relocation is enabled can undergo tier relocation. If tier relocation is disabled for all DP-VOLs in a pool, tier relocation is not performed.

Relationship between multi-tier pool and tier relocation

Example of adding a tier

If the added pool-VOL is a different media type, then a new tier is created in the pool. The tier is added to the appropriate position according to its performance. The following figure shows adding a tier.

Example of deleting a tier

If a tier no longer has any pool-VOLs when you delete them, the tier is deleted from the pool. The following figure shows deleting a tier.