IBM PowerLinux 7R2 Installing page 45

v Use the middle cable-management bridge lances for power and communications cables.
v The outermost row of cable-management bridge lances are available for use when routing cables.
v Use the cable raceways on the sides of the rack to manage excess SPCN and power cables.
v Four cable-management bridge lances are on the top of the rack. Use these bridge lances to route the
cables from one side of the rack to the other - by routing to the top of the rack, where possible. This
routing helps to avoid having a cable bundle that blocks the cable exit opening at the bottom of the
rack.
v Use the cable management brackets provided with the system to maintain concurrent maintenance
routing.
v Maintain a minimum bend diameter of 101.6 mm (4 in.) for communications (SAS, IB, RIO, and PCIe)
cables.
v Maintain a minimum bend diameter of 50.8 mm (2 in.) for power cables.
v Maintain a minimum bend diameter of 25.4 mm (1 in.) for SPCN cables.
v Use the shortest-length cable available for each point-to-point connection.
v If cables have to be routed across the rear of a drawer, leave enough slack to reduce the tension on the
cables for maintenance of the drawer.
v When routing cables, leave enough slack around the power connection on the power distribution unit
(PDU) so that the wall-to-PDU line cord can be attached to the PDU.
v Use hook-and-loop fasteners where necessary.
Figure 22. Cable management bridge lances
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Reference information