HP StorageWorks Clustered File System (software-only) 3.6.1 Windows Storage Server Edition upgrade guide (T4422 - 96001, August 2008)

Chapter 3: Rolling Upgrades 12
• The server with the numerically highest primary IP address must be
upgraded first. Then continue to upgrade the servers in descending
order of IP address, with the server with the lowest primary IP
address being upgraded last.
• For upgrades from HP Clustered File System 3.4.x, it is important to
upgrade all nodes in the cluster within a short time frame. We do not
recommend running the cluster for an extended period of time with
only some of the nodes upgraded to 3.6.1. The new configuration data
repository and new logging facility will not become fully functional
until all nodes are upgraded. If the cluster is only partially upgraded,
alerts raised by nodes running 3.6.1 will be improperly logged by
nodes running 3.4.x. Also, until the entire cluster is upgraded, many
services that are run on 3.6.1 nodes must be run as local system
administrator.
• The 3.6.1 version of the stand-alone HP CFS Management Console can
be used during the upgrade to connect to servers running either 3.4.x
or 3.6.1. However, there can be a long delay when opening the console
on a server running 3.6.1. The console should be used only to view the
cluster status; do not make configuration changes other than those
specified in the upgrade procedure (such as installing a new license).
Do not install the stand-alone Management Console on a 3.4.x or 3.6.1
server as it can conflict with the console that is installed with HP
Clustered File System.
• For upgrades from HP Clustered File System 3.4.x, you will need to
install a new license file during the upgrade. If the new file is not in
place when you start HP Clustered File System, license violations will
be reported on the Management Console and in the cluster log, and
the product will shut down after one hour and 45 minutes.
• If a server is temporarily out of the cluster during the upgrade (for
example, for maintenance), you will need to upgrade it to 3.6.1 before
returning it to the cluster.
• If you are upgrading to the 64-bit operating system, be sure to install
the 64-bit version of the HBA driver and the 64-bit version of HP
Clustered File System and FS Option for Windows.