Xsan Capacities
The following table lists limits and capacities for Xsan volumes.
Parameter
Maximum
Number of volumes on a SAN
16
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
Limited only by the size of the RAID array
Volume size
Limited only by the number and size of LUNs
File size
Approximately 2
63
bytes
Volume name length
70 characters (A–Z, a–z, 0–9, and _ )
File or folder name length
251 ASCII characters
Storage pool name length
255 ASCII characters
Affinity name length
255 ASCII characters
LUN name (label or disk name)
242 ASCII characters
20
Chapter 1
Overview of Xsan
21
Learn about Xsan hardware and software requirements,
and about planning guidelines and performance tips that
can help you design a SAN to meet your needs.
This chapter contains:
Xsan hardware and software requirements (page
Â
21)
SAN planning guidelines (page
Â
25)
Hardware and Software Requirements
Your SAN environment must satisfy requirements in these areas:
Supported computers
Â
Supported storage devices
Â
Fibre Channel fabric, adapters, and switches
Â
Ethernet network
Â
Directory services (optional)
Â
Outgoing mail service (optional)
Â
Supported Computers
To join an Xsan 2.2 SAN, computers must meet the following minimum requirements.
Base Systems
Clients and controllers must be Mac Pro or Xserve computers with Intel processors.
Â
(Client computers with PowerPC G5 processors running Xsan 2.1.1 can join a
SAN hosted by Xsan 2.2 controllers, to access volumes that don’t use extended
attributes.)
2