Apple Xsan 2 - Manual (Page 42)

Fabric configuration
You must connect the computers, storage devices, and switches in your Fibre Channel
network to form a Fibre Channel fabric. In a fabric, Fibre Channel cables connect node
ports (F or N_Port).
For more information about setting up your fabric, see the documentation that came
with your Fibre Channel switches.
Ethernet TCP/IP network
Computers on the SAN must be connected to an Ethernet network. Xsan controllers
and clients use this network instead of the Fibre Channel network to exchange file
system metadata.
If the computers on your SAN must communicate with directory servers, a corporate
or campus intranet, or the Internet, connect each SAN client and metadata controller to
two Ethernet networks: one private subnet for the SAN metadata and a separate
connection for directory service, intranet, and Internet traffic. This is especially important
if you plan to use the SAN for high-performance applications such as video editing.
IP addresses
The client and metadata controller computers need static (fixed) IP addresses for
Ethernet network connections. For the public intranet and Internet connection, you
can enter each computer’s static IP address, subnet mask, router address, and DNS
server address manually or configure a DHCP server to provide this information.
If you want the DHCP server to provide IP addresses, it must always assign the
same static IP address to each SAN computer. Don’t use DHCP to assign dynamic IP
addresses to SAN devices.
For the SAN metadata network, the SAN computers should have static private
(nonroutable) IP addresses (unless you can’t set up a separate, private Ethernet
network for SAN metadata).
If you’re setting up new computers or computers on which you’ve just installed
Mac OS X Lion or Lion Server, you can have Xsan Admin assign and manage addresses
for your private metadata network.
If you assign addresses yourself, use one of the following ranges of IP addresses on
your private (nonrouted) metadata network:
Private address range Associated subnet mask Also specified as
10.0.0.0–10.255.255.255 255.0.0.0 10/8
172.16.0.0–172.31.255.255 255.240.0.0 172.16/12
192.168.0.0–192.168.255.255 255.255.0.0 192.168/16
42 Chapter 3 Plan a SAN