logiosize mount option

The logiosize=size option enhances the performance of storage devices that employ a read-modify-write feature. If you specify logiosize when you mount a file system, VxFS writes the intent log in the least size bytes or a multiple of size bytes to obtain the maximum performance from such devices.

See the mount_vxfs(1M) manual page.

The values for size can be 512, 1024, 2048, 4096, or 8192.