ServerNet Cluster Manual

Installing and Configuring a ServerNet Cluster
ServerNet Cluster Manual—520575-003
3-25
Installing a ServerNet Cluster Using the Split-Star
To p ol ogy
Installing a ServerNet Cluster Using the
Split-Star Topology
A ServerNet cluster using a split-star topology has up to two cluster switches per fabric
and can support up to 16 nodes.
You construct a split-star topology by installing the two star groups of the split-star as
independent clusters and then connecting the clusters using the Add Switch guided
procedure. Each of the two star groups uses one switch per fabric and supports up to
eight nodes. Each star group is a valid subset of the split-star topology and can
operate independently of the other star group if necessary.
Table 3-6 lists the tasks for installing a ServerNet cluster using a split-star topology.
Task 1: Decide Which Nodes Will Occupy the Two Star Groups of
the Split-Star Topology
Each star group of the split-star topology can support up to eight nodes. You can use
the following form to plan which nodes will belong to each star group of the split-star
topology.
Note. To install a valid subset of the split-star topology, use the following procedure, but skip
the steps for constructing the unneeded star group and connecting the four-lane links.
Table 3-6. Task Summary for Installing a ServerNet Cluster Using a Split-Star
Topology
√ Description Page
Task 1: Decide Which Nodes Will Occupy the Two Star Groups of the
Split-Star Topology
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Task 2: Route the Fiber-Optic Cables for the Four-Lane Links 3-26
Task 3: Install the Two Star Groups of the Split-Star Topology 3-26
Task 4: Use the Guided Procedure to Prepare to Join the Clusters 3-27
Task 5: Connect the Four-Lane Links 3-27
Task 6: Configure Expand-Over-ServerNet Lines for the Remote Nodes 3-29
Task 7: Verify Operation of the Cluster Switches 3-29
Task 8: Verify Cluster Connectivity 3-29
Note. If the four-lane link connecting the X1/Y1 and X2/Y2 cluster switches exceeds 80
meters, all nodes in the cluster must meet the requirements in Table 2-4 on page 2-11.