ServerNet Cluster Manual

ServerNet Cluster 6770 Hardware Installation and Support Guide—522544-002
H-1
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Using OSM to Manage the Star
Topologies
The contents of this section were formerly part of the ServerNet Cluster 6770
Supplement. That supplement has been incorporated into this manual for easier
access and linking to the information.
OSM supports all network topologies of a ServerNet cluster: the star topologies (star,
split-star, and tri-star) and the newer layered topology. If you use the OSM software to
manage a cluster with one of the star topologies, this section describes the differences
between the OSM Service Connection and the TSM Service Application.
ServerNet Cluster Resource Appears at Top Level of Tree Pane
The OSM Service Connection does not have a cluster tab as the TSM Service
Application does. As a result, you do not need to switch between cluster resources and
system resources. You can see all resources in the tree pane at the same time.
Some Cluster Resources Are Represented Differently in OSM
The OSM representation of the 6770 switch used in the star topologies is more
complete than the TSM representation. In particular, the ServerNet II Switch, the AC
Transfer Switch, and the UPS now appear as separate resources. To view these
resources, expand the Switch Module resource.
The OSM names for some cluster resources are different from the TSM names:
TSM Name OSM Name
Switch-to-Node Link Switch PIC (PICs 0 through 7 connect to the nodes.)
Switch-to-Switch Link Switch PIC (PICs 8 through 11 connect to other switches.)
Local Node ServerNet Local Node
Remote Node ServerNet Remote Node
Note. The full name for a Switch PIC is in the form: Switch PIC $ZZSMN.X.1.2. The last digit
in the name is the PIC number. In this example, the last digit is 2, indicating that this PIC is
used for connections to nodes.