Apple Xsan (upgrading to Xsan 1.4) - Manual (Page 9)

Chapter 1 General Information About Upgrading Xsan 9
Promoting a Client to Standby Controller
You can temporarily change the role of a client computer so that it acts as a standby
controller during the upgrade. This allows uninterrupted access to your SAN volumes
during the upgrade.
To promote a client to controller:
1 In Xsan Admin, select the SAN in the SAN Components list and click Setup.
2 Click Computers, select the client in the computer list, and click Edit.
3 Choose Controller from the Role pop-up menu.
4 If necessary, change the network interface in the “Access the SAN via” pop-up menu to
the SAN’s Ethernet network.
5 Click OK, and then click Save.
Where to Get the Updates
There are several ways you can install the software updates mentioned in this guide.
Xsan Updates
If you have an Xsan installation disc, insert it in the computer and double-click the
installation package Install Xsan.mpkg.
If you don’t have the disc but the computer is connected to the Internet, you can open
the Software Update pane of System Preferences, click Check Now, select the
appropriate Xsan update, and click Install.
If the controller is on a private network, you can use a computer that is connected to
the Internet to download the update from www.apple.com/support/downloads/,
transfer the installer to the controller computer, and run it.
Mac OS X v10.4.7 Update
If the computer is connected to the Internet, you can open the Software Update pane
of System Preferences, click Check Now, select the Mac OS X Update Combined version
10.4.7 (or later) update, and click Install.
If the computer is on a private network, you can use a computer that is connected to
the Internet to download the update from www.apple.com/support/downloads/,
transfer the installer to the controller computer, and run it.
Mac OS X or Mac OS X Server?
The Xsan file system, the Xsan Admin application, and the Xsan User Quotas
application run identically on Mac OS X and Mac OS X Server. Any statement in this
guide about Mac OS X also applies to Mac OS X Server.