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Figure 4-14 x3950 M2: ScaleXpander cable routing
4. Ensure each server can be pulled out fully at the front of the rack and the
scalability cables are clearly routed.
4.6.2 Three-node configuration
A three-node configuration requires three 3.0 m (9.8-foot) ScaleXpander cables.
The cable diagram is shown in Figure 4-15 on page 215. One 3.0 m cable is
included with every x3950 M2 system, or with the ScaleXpander Option Kit (for
upgraded x3850 M2 systems).
The scalability cables required for a three-node configuration are listed in
Table 4-5.
Table 4-5 Scalability cables for three-node configuration
Scalability cable
3.0 m cable
3.0 m cable
3.0 m cable
214
Planning, Installing, and Managing the IBM System x3950 M2
Route the cables through
hanger brackets, balancing
the slack in the cables
between the CMAs and the
nodes and in the side of the
rack.
Connection
Node 1: scalability port 1 → node 2: scalability port 1
Node 1: scalability port 2 → node 3: scalability port 1
Node 2: scalability port 2 →node 3: scalability port 2
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