Apple Xsan 1.4 - Manual (Page 51)

Chapter 2 Setting Up a Storage Area Network 51
Preparing LUNs
Xserve RAID systems usually come preconfigured with two RAID 5 arrays, one on
each side (on each controller). So, out of the box, each Xserve RAID provides two LUNs.
If this suits your needs, no other preparation is needed.
If you want to set up some other combination of RAID arrays or slices, you need to do
so using the RAID Admin application before you can add the resulting LUNs to your
SAN’s storage pools. For help using RAID Admin, see Using RAID Admin 1.2 and Disk
Utility (available at www.apple.com/server/documentation/). For information about
choosing a RAID scheme, see “Choosing RAID Schemes for LUNs” on page 44.
Note: You don’t need to use Disk Utility to format arrays or slices for use with Xsan.
The LUNs are labeled and initialized when you add them to a storage pool using Xsan
Admin. After they are labeled, the LUNs can’t be modified using Disk Utility.
Be sure to create arrays of similar size if you plan to combine them into the same
storage pool. For more information, see “Assigning LUNs to Storage Pools” on page 46.
Using the Xsan Admin Application
You use the Xsan Admin application to set up and manage SANs. You can use Xsan
Admin to manage a SAN from any computer that has access to the SAN’s TCP/IP
subnet.
Xsan Admin is installed in /Applications/Server/.