ServerNet Cluster Manual

Upgrading a ServerNet Cluster
ServerNet Cluster Manual—520575-003
4-83
Steps for Merging a Split-Star Topology and a Star
Topology to Create a Tri-Star Topology
2. Decide the configuration tags to be used by the cluster switches in each cluster
when they are combined in the tri-star topology. During the upgrade, the Add
Switch guided procedure prompts you for the configuration tag. You can use
Table 4-21 on page 4-74 to record this information. Table 4-3 on page 4-5 shows
the supported configuration tags.
3. Decide which nodes will belong to each cluster switch before and after the upgrade
to the tri-star topology. You can use Table 4-22 on page 4-75 to record this
information.
4. Log on to any node connected to the cluster using the star topology, and run the
Add Switch guided procedure:
a. From the system console of that node, choose Start>Programs>Compaq
TSM>Guided Configuration Tools>Add Switch. Online help can assist you
in performing the procedure. The guided procedure:
•
Checks the software levels of SNETMON and SANMAN on the local node
•
Checks the ServerNet II Switch firmware and configuration
•
Allows you to update the firmware and configuration if necessary
•
Tells you when to disconnect the four-lane links if necessary and connect
two-lane links
•
Allows you to test the remote connections (two-lane links)
b. In the Select Upgrade Topology dialog box, select the tri-star topology as the
topology to which you want to upgrade.
c. In the Select Switch Configuration Tag dialog box, select the following
configuration tag:
Max 24 nodes, nodes 17-24 (0x10004)
Note. If you are merging a split-star topology with a star topology to create a tri-star
topology, HP recommends configuring the star topology to support nodes 17 through 24. If
you do this, you do not have to change the ServerNet node numbers supported by the
cluster switches using the split-star topology. Those cluster switches already support
nodes 1 through 16.
Note. A cluster using a star topology uses one cluster switch per fabric and supports up to
eight ServerNet nodes. A split-star topology uses up to two cluster switches per fabric and
supports up to 16 ServerNet nodes.