Each LUN in an Xsan volume is a RAID array. The way you set up your arrays depends
on the storage device you’re using.
To create a set of LUNs for your SAN, use the application that comes with your RAID
system to create, for example, LUNs based on different RAID schemes or LUNs based
on array stripes. Setup scripts for creating common LUN configurations on Promise
RAID systems are available at www.apple.com/support/.