Required configuration for SmartIO write-back caching for a VxFS file system

You must have an Enterprise license to use SmartIO with write-back caching for Storage Foundation or Storage Foundation High Availability.

You can set up SmartIO for write-back caching for a VxFS file system with the following configurations:

In the case of CFS, write-back caching uses LLT transport to mirror the write-back data. Application writes that are cached are also written to the remote cache before the write is returned.

Symantec recommends that you configure LLT over a high bandwidth network such as a 10GigE network to avoid impact to the throughput.

For information on configuring LLT, see the Symantec Storage Foundation Cluster File System High Availability Installation Guide.

The file system must have the following characteristics: