5.5 HP StorageWorks X9720 Network Storage System Administrator Guide (AW549-96026, March 2011)

12 Upgrading the X9000 Software
This chapter describes how to upgrade to the latest X9000 File Serving Software release. The
management console and all file serving nodes must be upgraded to the new release at the same
time. X9000 Clients are supported for one version beyond their release. For example, an X9000
5.3.2 client can run with a 5.4 X9000 server, but not with a 5.5 X9000 server.
IMPORTANT:
Do not start new remote replication jobs while a cluster upgrade is in progress. If replication jobs
were running before the upgrade started, the jobs will continue to run without problems after the
upgrade completes.
Upgrades can be run either online or offline:
• Online upgrades. This procedure upgrades the software while file systems remain mounted. Before
upgrading a file serving node, you will need to fail the node over to its backup node, allowing
file system access to continue. This procedure cannot be used for major upgrades, but is appropriate
for minor and maintenance upgrades.
• Offline upgrades. This procedure requires that file systems be unmounted on the node and that
services be stopped. (Each file serving node may need to be rebooted if NFS or CIFS causes the
unmount operation to fail.) You can then perform the upgrade. Clients experience a short interruption
to file system access while each file serving node is upgraded.
You can use an automatic or a manual procedure to perform an offline upgrade. Online upgrades
must be performed manually.
Automatic upgrades
The automated upgrade procedure is run as an offline upgrade. When each file serving node is
upgraded, all file systems are unmounted from the node and services are stopped. Clients will
experience a short interruption to file system access while the node is upgraded.
All file serving nodes and management consoles must be up when you perform the upgrade. If a node
or management console is not up, the upgrade script will fail and you will need to use a manual
upgrade procedure instead. To determine the status of your cluster nodes, check the dashboard on
the GUI.
NOTE:
If you are currently running the 5.4 release with a standard management console and want to convert
to an agile management console configuration, see Chapter 11. Migrate to the agile management
console first, and then perform the upgrade.
To upgrade all nodes in the cluster automatically, complete the following steps:
1. Check the dashboard on the management console GUI to verify that all nodes are up.
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