Apple Xsan 1.1 - Manual (Page 54)

54 Chapter 3 Managing SAN Storage
Note: To have an existing file redistributed across all of the LUNs in the storage pool
(including the LUN you just added), you must make a new copy of the file. If you are
adding LUNs to speed up access to a file, be sure to duplicate the file so a new copy is
distributed across all available LUNs.
From the Command Line
You can also add LUNs to a storage pool by modifying the associated volume
configuration file and using the
cvlabel command in Terminal. For more information,
see the cvfs_config and cvlabel man pages or “The Volume Configuration File” on
page 120 and “Labeling, Listing, and Unlabeling LUNs (cvlabel)” on page 114.