Using the /etc/vx/tunefstab file updates the tunable parameters at the time of mount. The file system /etc/vx/tunefstab parameters are set to be identical on all nodes by propagating the parameters to each cluster node. When the file system is mounted on the node, the /etc/vx/tunefstab parameters of the primary node are used. Symantec recommends that this file be identical on each node.

See the tunefstab(4) and vxtunefs(1M) manual pages for more information.