ServerNet Cluster Manual

ServerNet Cluster Manual—520575-003
6-1
6 Adding or Removing a Node
This section describes how to change the size of an already-installed ServerNet
Cluster or a node in a cluster. This section includes:
Adding a Node to a ServerNet Cluster
You can add nodes to a ServerNet cluster until the cluster reaches the maximum
number of nodes supported for the topology. (The tri-star topology supports up to 24
nodes.) You can add only one node at a time. HP recommends that you use the guided
procedure to add a node.
1. Review the Planning Checklist in Section 2, Planning for Installation, to ensure that
you are ready to add a node. In particular, you must make sure that the node
meets the software requirements for the topology used by the cluster.
2. Verify that $ZEXP and $NCP are started and configured properly, as described in
Section 3, Installing and Configuring a ServerNet Cluster.
3. Verify that MSGMON, SANMAN, and SNETMON are configured and started as
described in Section 3, Installing and Configuring a ServerNet Cluster.
4. Use the guided configuration procedure to configure and add a node to an already-
installed ServerNet cluster.
From the system console of the server you are adding, choose
Start>Programs>Compaq TSM>Guided Configuration Tools> Configure
ServerNet Node. Online help is available to assist you in performing the
procedure.
Heading Page
Adding a Node to a ServerNet Cluster
6-1
Removing a Node From a ServerNet Cluster 6-2
Moving a Node From One ServerNet Cluster to Another 6-4
Moving ServerNet Cables to Different Ports on the ServerNet II Switches 6-5
Expanding or Reducing a Node in a ServerNet Cluster 6-11
Splitting a Large Cluster Into Multiple Smaller Clusters 6-11
Note. You can use OSM instead of TSM for any of the procedures described in this manual.
For information on using OSM instead of TSM, see Appendix H, Using OSM to Manage the
Star Topologies.
Note. If the topology used by your cluster will not support any more nodes, you must change
the topology. See Section 4, Upgrading a ServerNet Cluster
.
Note. Before using the guided procedure, be sure to review the online help topic “Read
Before Using.” This topic contains important information about software requirements that
must be met before you run the procedure.