ServerNet Cluster Manual

Upgrading a ServerNet Cluster
ServerNet Cluster Manual—520575-003
4-68
Merging Clusters to Create a Tri-Star Topology
Merging Clusters to Create a Tri-Star Topology
To create a tri-star topology supporting up to 24 nodes, you can do one of the
following:
•
Merge three clusters that currently use one cluster switch per fabric (supporting up
to eight nodes each).
•
Merge a cluster that uses one cluster switch per fabric (supporting up to eight
nodes) with another cluster that uses two cluster switches per fabric (supporting up
to 16 nodes).
You cannot merge two clusters if both clusters currently use two cluster switches per
fabric. (32-node clusters are currently not supported.)
This section contains the following subsections:
•
Example: Merging Three Star Topologies to Create a Tri-Star Topology on
page 4-68
•
Steps for Merging Three Star Topologies to Create a Tri-Star Topology on
page 4-73
•
Example: Merging A Split-Star Topology and a Star Topology to Create a Tri-Star
Topology on page 4-78
•
Steps for Merging a Split-Star Topology and a Star Topology to Create a Tri-Star
Topology on page 4-82
Example: Merging Three Star Topologies to Create a Tri-Star
Topology
The following example begins with three ServerNet clusters running any of the
following RVUs:
•
G06.09
•
G06.10
•
G06.11
•
G06.12
•
G06.13
All three clusters use the star topology (or are subsets of other topologies that include
only one cluster switch per fabric and support up to eight nodes). The upgrade:
•
Installs new versions of the release 3 software listed in Table 4-6 on page 4-8 on all
nodes
Note. The tri-star topology (three cluster switches per fabric) requires that all nodes run 06.13
with the SPRs listed in Ta bl e 4 -6
on page 4-8 or a later G-series RVU (without SPRs). G06.13
or a later G-series RVU is required because versions of the operating system earlier than
G06.13 do not support the tri-star topology. In addition, the cluster switches must be loaded
with the T0569AAE firmware and configuration.