ServerNet Cluster Manual

ServerNet Cluster Manual—520575-003
4-1
4 Upgrading a ServerNet Cluster
This section describes how to upgrade a ServerNet cluster by installing new software,
adding ServerNet Switches, or both. You need to upgrade a ServerNet cluster when
the cluster cannot accept any more ServerNet nodes.
Adding cluster switches usually changes the topology of a cluster. In some cases,
before changing the topology of the cluster, you must upgrade the software running on
each node and the firmware and configuration loaded in each cluster switch.
This section also includes fallback procedures in case anything goes wrong during the
upgrade.
This section contains:
•
Benefits of Upgrading on page 4-2
•
Planning Tasks for Upgrading a ServerNet Cluster on page 4-4
•
Upgrading Software to Obtain G06.12 Functionality on page 4-17
•
Fallback for Upgrading Software to Obtain G06.12 Functionality on page 4-26
•
Upgrading Software to Obtain G06.14 Functionality on page 4-34
•
Fallback for Upgrading Software to Obtain G06.14 Functionality on page 4-50
•
Merging Clusters to Create a Split-Star Topology on page 4-54
•
Fallback for Merging Clusters to Create a Split-Star Topology on page 4-66
•
Merging Clusters to Create a Tri-Star Topology on page 4-68
•
Fallback for Merging Clusters to Create a Tri-Star Topology on page 4-89
•
Reference Information on page 4-93
Note. You can also use the OSM Service Connection instead of the TSM Service Application.
For more information, see Appendix H, Using OSM to Manage the Star Topologies
.
Note. This section assumes that you already have one or more ServerNet clusters installed
and you want to upgrade software or change the topology. If you are building a ServerNet
cluster for the first time, refer to Section 3, Installing and Configuring a ServerNet Cluster
.
If you need to do any of the following, refer to Section 6, Adding or Removing a Node
:
•
Add a node to a cluster
•
Remove a node from a cluster so you can add the node to another cluster
•
Split a large cluster into multiple smaller clusters without installing new cluster switches