Cluster Installation and Configuration Guide - Windows Server 2003

With clustered systems, you can do maintenance even when users are online. Wait until a
convenient, off-peak time when one of the nodes in the cluster can be taken offline for maintenance
and its workload distributed among the remaining nodes. Before the upgrade, however, you
must evaluate the entire cluster to verify that the remaining nodes can handle the increased
workload.
Pick the node you want to upgrade, then use the Cluster Administrator to move all the clustered
resources onto one or more of the remaining nodes. You can also use scripts to move resources.
Once all the resources have been failed over to the other nodes, the selected node is ready to
upgrade. For more information about how to upgrade your Integrity servers with the latest
drivers and QFEs, see the latest Smart Setup Guide for Integrity servers at:
http://docs.hp.com/en/hw.html#Windows%2064-bit%20on%20HP%20Integrity%20Servers
Once the upgrade to the first node is complete, reboot it if necessary and move the resources
back to it. As soon as possible, repeat this process to upgrade the other nodes in the cluster. This
minimizes the amount of time the nodes are operating with different versions of software or
drivers.
Upgrading Individual Nodes 33