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5.5.1.1 Connecting MC1 or MC1.5 Link Cables in Virtual Hub Mode
For an MC1 virtual hub configuration (two nodes in the cluster), connect the
BC12N-10 link cables between the Memory Channel adapters installed in
each of the systems.
_____________________ Caution _____________________
Be very careful when installing the link cables. Insert the cables
straight in.
Gently push the cable’s connector into the receptacle, and then use the
screws to pull the connector in tight. The connector must be tight to ensure
a good ground contact.
If you are setting up redundant interconnects, all Memory Channel adapters
in a system must have the same jumper setting, either VH0 or VH1.
______________________ Note _______________________
With the TruCluster Server Version 5.0A product and virtual hub
mode, there is no longer a restriction requiring that mca0 in one
system be connected to mca0 in the other system.
5.5.1.2 Connecting MC1 Link Cables in Standard Hub Mode
If there are more than two systems in a cluster, use a standard hub
configuration. Connect a BC12N-10 link cable between the Memory Channel
adapter and a linecard in the CCMHA hub, starting at the lowest numbered
slot in the hub.
If you are setting up redundant interconnects, the following restrictions
apply:
• Each adapter installed in a system must be connected to a different hub.
• Each Memory Channel adapter in a system must be connected to
linecards that are installed in the same slot position in each hub. For
example, if you connect one adapter to a linecard installed in slot 1 in
one hub, you must connect the other adapter in that system to a linecard
installed in slot 1 of the second hub.
Figure 5–1 shows Memory Channel adapters connected to linecards that are
in the same slot position in the Memory Channel hubs.
5–8 Setting Up the Memory Channel Cluster Interconnect