Apple Xsan 2 - Manual (Page 57)

Chapter 4 Set up a SAN 57
Be sure to create arrays of the same size if you plan to add them to the same affinity
tag (or the same storage pool of a custom volume). For more information, see “Assign
LUNs to affinity tags” on page 48.
Use the server setup assistant to configure controllers
You use the server setup assistant to configure servers as Xsan metadata controllers.
The server setup assistant runs when you start up a new server or a server on which
you have performed a clean installation of Mac OS X Lion Server. When using the
server setup assistant to set up your primary metadata controller, you can choose how
to manage Xsan users and groups.
Manage users and groups with Xsan Admin
When using the server setup assistant to set up your primary metadata controller,
you can choose to manage SAN users and groups with Xsan Admin. This option is
recommended if you don’t have a directory server and you expect to have up to 20
SAN users. These users will have local home folders on their computers (not network
home folders on the server).
Important: You can choose to manage users and groups with Xsan Admin only
when you use the server setup assistant to set up your primary metadata controller.
You can’t configure this option after setting up the primary controller with the server
setup assistant.
If you choose this option, the server setup assistant makes the primary metadata
controller an Open Directory master server. Then Xsan Admin configures standby
metadata controllers as Open Directory replica servers. For the Open Directory master
and replicas, the directory administrator’s user name is Directory Administrator, the
short name is diradmin, and the password is initially the same as the password of the
administrator account that you create with the server setup assistant.
Xsan Admin also configures Xsan client computers with Xsan 2 to connect to your
Xsan primary metadata controller for Open Directory user and group accounts.
Use an existing Open Directory server
If you have an Open Directory server, you can have the server setup assistant configure
your primary metadata controller to get users and groups from it. Then when you set
up your SAN, the Xsan setup assistant configures standby metadata controllers and
client computers to connect to the Open Directory server for users and groups.