Apple Xsan 1.1 - Manual (Page 20)

20 Chapter 1 Overview of Xsan
You can also control user access to folders on a volume by specifying owner, group,
and general access permissions as you would in the Finder.
You can also set up zones in the underlying Fibre Channel network to segregate users
and volumes.
Expanding Storage
There are two ways you can add free space to an Xsan volume:
 Add Xserve RAID systems (new LUNs) to existing storage pools
 Add entire new storage pools to volumes
Both methods require you to unmount and remount the volume on clients.
You can also add new volumes to a SAN at any time.
For information on expanding Xsan storage, see “Adding Storage” on page 52.
Xsan Capacities
The following table lists limits and capacities for Xsan volumes.
Parameter Maximum
Number of computers in a SAN (controllers and clients) 64
Number of storage pools in a volume 512
Number of LUNs in a storage pool 32
Number of LUNs in a volume 512
Number of files in a volume 4,294,967,296
LUN size 2 TB
Volume size 16 TB (Mac OS X v10.3)
1024 TB (Mac OS X v10.4)
File size 16 TB (Mac OS X v10.3)
1024 TB (Mac OS X v10.4)
Volume name length 70 characters
File or folder name length 251 characters
SAN name length 255 characters
Storage pool name length 255 characters
LUN name (label or disk name) 242 characters