IBM pSeries 690 Service Manual page 1038

p690 Cable Installation and Management
In some configurations, cables that are not properly supported might damage the associated connectors.
Connector damage can be prevented by following the procedures described in this section. These
procedures must be used for installing I/O cables, administrative LAN cables, and High Performance
Switch (HPS) cables in a M/T 7040-W42 frame.
Note: Planning information for switch cable installation is detailed in "Appendix D. Cabling the pSeries
HPS" of the eServer Cluster 1600: pSeries High Performance Switch Planning, Installation, and
Service Guide.
This section describes the procedures you must follow when installing a 7040 frame, especially with
administrative LAN and High Performance Switch cables. Failure to follow these procedures might damage
network components. The objectives of these procedures are to:
v Provide HPS cables with continuous support and strain relief.
v Minimize the possibility of pin damage to the SNI ports.
v Form consistent cable groups.
v Maintain efficient cooling.
A high-level workflow for cable installation is as follows:
1. Install the frame.
2. Route all signal cables up through the tailgate.
3. Separate cables into groups based on their location and size.
Note: If a High Performance Switch is in the configuration, the cables must not be connected to SNIs
or switch port connection cards until the weight of each cable is fully supported.
4. Make certain that cable groupings do not interfere with PCI adapter slots.
5. Make certain that the cable bend radius allows clearance for closing the rear door but is not so sharp
that it places excessive strain on the cable or the associated connectors.
6. Cable the frame starting with the upper cable connections and working down.
7. Apply tailgate insert clamp supports for the cables from left to right.
The following illustration shows the tailgate assembly and standard frame extenders of a properly cabled
frame. Refer to the service guide for more parts information.
1022 Eserver pSeries 690 Service Guide