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Table 4-6 Scalability cables for four-node configuration
Scalability cable
3.26m cable (longer)
3.0 m cable
3.0 m cable
3.0 m cable
3.0 m cable
3.0 m cable
To cable a four-node configuration for up to 16-socket operation:
1. Label each end of each ScaleXpander cable according to where it will be
connected to each server.
2. Connect the ScaleXpander cables to node1:
a. Connect one end of the long ScaleXpander cable to port 1 on node 1;
then, connect the opposite end of the cable to port 1 of node 4.
b. Connect one end of a short ScaleXpander cable to port 2 on node 1; then,
connect the opposite end of the cable to port 2 of node 3.
c. Connect one end of a short ScaleXpander cable to port3 on node1; then,
connect the opposite end of the cable to port 2 of node 3.
3. Route the cables through the enterprise cable management arms as follows
(refer to Figure 4-14 on page 214), ensuring that in each case, you have
enough spare length of the cable between the rear side of the server and the
first hanger bracket, and on the front side of the cable management arm:
a. Route the cable connected on port 1 of node 1 through the hanger
brackets on the cable management arms.
b. Route the cable connected on port 2 of node 1 through the hanger
brackets on the cable management arms.
c. Route the cable connected on port 2 of node 2 through the hanger
brackets on the cable management arms.
4. Connect the ScaleXpander cables to node 2:
a. Connect one end of the long ScaleXpander cable to port 1 on node 2;
then, connect the opposite end of the cable to port 1 of node 3.
b. Connect one end of a short ScaleXpander cable to port 2 on node 2; then,
connect the opposite end of the cable to port 2 of node 4.
218
Planning, Installing, and Managing the IBM System x3950 M2
Connection
Node 1: scalability port 1 → node4: scalability port 1
Node 1: scalability port 2 → node3: scalability port 2
Node 1: scalability port 3 → node2: scalability port 3
Node 2: scalability port 1 → node3: scalability port 1
Node 2: scalability port 2 → node4: scalability port 2
Node 3: scalability port 3 → node4: scalability port 3
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