Apple Xsan (upgrading to Xsan 1.4) User Manual

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Chapter 2

Upgrading to Xsan 1.4 on Mac OS X version 10.4

Step 1:

If needed, upgrade SAN controllers to Mac OS X v10.4.7

Xsan 1.4 requires Mac OS X (or Mac OS X Server) v10.4.7. If your SAN controllers are
running an earlier version of Mac OS X, you must upgrade the controllers to v10.4.7
(or later) before you upgrade Xsan.

Important:

If you want your SAN volumes to remain available to clients during the

upgrade, upgrade your SAN controllers one at a time so there is always a standby
controller ready to take control of any volume currently hosted by the controller you
are upgrading.

Note:

If you want, you can use the

cvadmin fail

command to force failover and then

verify that it was successful before you upgrade a controller (instead of relying on
failover to take place behind the scenes when you restart the computer). For more
information, see the

cvadmin

man page.

To upgrade your controllers to Mac OS X v10.4.7:

If the controller is currently running any version of Mac OS X v10.4 Tiger, skip to
step 3 below.

If the controller is running any version of Mac OS X v10.3 Panther, insert the Mac OS X
v10.4 software installation disc in a controller computer and double-click the Install
Mac OS X icon.

When you reach the Select Destination pane of the installer, click Options and select
Upgrade Mac OS X.

Important:

Be sure to select the upgrade installation, not the clean installation. If you

perform a clean installation of the operating system, the controller will lose its copy of
the Xsan configuration files.

Restart the controller computer when prompted by the installer.

Run the Mac OS X v10.4.7 update installer on the controller.

If the controller is connected to the Internet, you can open the Software Update pane
of System Preferences, click Check Now, and install the Mac OS X (or Mac OS X Server)
v10.4.7 (or later) update.

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.

Restart the controller when prompted.

Repeat steps 1 through 4 above for each controller on your SAN.