Apple Xsan 2 (Third Edition) - Manual (Page 52)

Preparing LUNs
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/.
Finding the Drive Modules That Belong to a LUN
To see which physical drive modules belong to a LUN, you can use Xsan Admin to turn
on the drive activity lights on the RAID system that hosts the LUN.
Click to turn on
drive lights for
selected LUN.
To find a LUN’s drives:
In Xsan Admin, select LUNs in the SAN Assets list, select a LUN in the list of LUNs,
m
and click the “Identify LUN Using RAID Lights” button in the lower-right corner of the
window. Then, look at your RAID hardware to find the drives that have activity lights
on solid.
52 Chapter 4 Managing SAN Storage