Optimizing the Performance of the Sun StorEdge QFS Shared File System

For optimum performance with Solaris Volume Manager for Sun Cluster, configure the volume manager and the file system as follows:

• Use Solaris Volume Manager for Sun Cluster to mirror the logical unit numbers (LUNs) of your disk arrays.

• If you require striping, configure the striping by using the file system's stripe option.

Mirroring the LUNs of your disk arrays involves the following operations:

• Creating RAID-0 metadevices

• Using the RAID-0 metadevices or Solaris Volume Manager soft partitions of such metadevices as Sun StorEdge QFS devices

The input/output (I/O) load on your system might be heavy. In this situation, ensure that the LUN for Solaris Volume Manager metadata or hardware RAID metadata maps to a different physical disk than the LUN for data. Mapping these LUNs to different physical disks ensures that contention is minimized.