Apple Xsan 2 (Second Edition) - Manual (Page 6)

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Upgrading from Xsan 1.4 to Xsan 2.1
The following steps summarize how to upgrade your SAN to Xsan 2.1.
1 Back up your SAN volumes.
2 Unmount and stop the volumes.
3 Verify the integrity of the volumes.
4 Upgrade SAN computers to Xsan 1.4.2.
5 Upgrade SAN computers to Mac OS X v10.5 Leopard.
6 Update SAN computers to Mac OS X v10.5.3 or later.
7 Install Xsan 2 on SAN computers.
8 Update SAN computers to Xsan 2.1.
9 Run the SAN Setup Assistant.
a Open Xsan Admin and connect to an upgraded metadata controller.
b Add computers to the new SAN.
c Authenticate to each SAN computer.
d Add Xsan 2 serial numbers.
10 Wait for the volume upgrade to finish.
11 (Optional) Enable Spotlight on SAN volumes.
12 (Optional) Adjust failover priorities.
13 Remount volumes on clients and controllers.
Instructions for each of these steps are on the following pages.
WARNING: Don’t make any changes to Xsan settings (using either Xsan Admin or the
command-line tools) while you are upgrading your SAN controllers. If you need to
make configuration changes, wait until you finish upgrading all of your controllers.