Owner's manual

12 Managing a ServerNet Cluster
A ServerNet cluster is a collection of NonStop servers connected together using the ServerNet protocol.There are
two generations of ServerNet clusters:
• The first-generation ServerNet cluster is built around the HP NonStop Cluster Switch (model 6770) and can
support up to 24 nodes. It is built using one of the star topologies (star, split-star, or tri-star).
For information about ServerNet clusters built with the star topologies, see the ServerNet Cluster Manual, the
ServerNet Cluster 6770 Hardware Installation and Support Guide, and the ServerNet Cluster Supplement for
NS-Series Servers.
• The second-generation ServerNet cluster is built around the HP NonStop ServerNet Switch (model 6780) and
can support up to 64 nodes. It is built using a layered topology.
For information about ServerNet clusters built with the layered topology, see the ServerNet Cluster 6780 Planning
and Installation Guide , the ServerNet Cluster 6780 Operations Guide, and the ServerNet Cluster Supplement
for NS-Series Servers.
Using the OSM Service Connection, you can monitor and maintain the ServerNet cluster resources. The hardware
resources in a cluster differ depending on the topology of the ServerNet cluster. For details about the resources that
make up each type of ServerNet cluster, see Cluster Resources.
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