Required configuration for SmartIO read caching for VxVM volumes


Required configuration for SmartIO read caching for VxVM volumes
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You can set up SmartIO for read caching for VxVM volumes with the following configurations:

A Storage Foundation RAC (SFRAC) cluster or a Storage Foundation Cluster File System High Availability (SFCFSHA) cluster. A cache area cannot be on a shared volume. The VxVM cache area must be configured as local to each node, as shared access of cache area is not supported.
A Storage Foundation High Availability (SFHA) cluster. The VxVM cache area must be configured as local to each node, as shared access of cache area is not supported.

See About SmartIO in an SFHA environment.
A stand-alone Storage Foundation system.

The volumes to be cached must have the disk group version 190 or above.

The devices used for the cache area have the following characteristics:

Utilize faster devices such as solid-state drives (SSDs) supported by Veritas Volume Manager (VxVM) to accelerate read IO performance. However, any devices supported by VxVM can be used for the cache area.
Must be initialized for use with VxVM, and must have the cdsdisk format.