HP 376227-B21 - ProLiant InfiniBand 4x Fabric Copper Switch Installatiehandleiding - Pagina 26
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ProLiant Linux Installation Overview & Planning
Attach Cables
Bundles of cables should not be "tie-wrapped" with a tie-gun. These fasteners create pinch points on the
cables that can crush the dielectric material and create impedance discontinuities. Rather, cables should be
bundled using velcro strapping or other less compressive bundling techniques.
Cable Routing and Bend Limits
Pre-form the cables to the bent condition prior to installation if possible. This reduces any undue strain at the
plug/receptacle connection at the time of installation.
Handling or installing an InfiniBand technology cable in a manner that results in a tight bend radius or
excessive twisting can result in immediate or latent failure of the cable.
Attach Cables
The connectors include a latching mechanism. The latching and unlatching mechanism varies by
manufacturer, and prior to installing cables, familiarize yourself with how to engage and disengage the latch.
If the cable plug is not properly oriented to fit onto the port receptacle (as you attempt to insert the cable in
the port), do not twist the plug to achieve the correct orientation. Instead, reach back a few feet on the cable,
and twist the bulk cable to allow the plug to rotate to the proper orientation. Doing this prevents the
rotational forces from acting right at the plug terminations.
Attach cables to switches and HCAs assuring that the latch is engaged on each connection. Pull or push
evenly across the width of the lanyard to latch or unlatch the plug connector. Pulling abruptly on the lanyard,
or pulling on only one side of the lanyard will prevent the latch/unlatch operation from occurring, and could
damage or break the lanyard.
Care should be taken such that the mounting of the cable to switch or adapter does not place unnecessary
stress on the connection as depicted below:
Figure 2-12
Correct & Incorrect Cable Installation
Attach to other HP Fabric Clustering System devices:
Attach the free end of the cable to a compatible HP Fabric Clustering System switch or adapter. Push the
connector in until you hear it click into the locked position.
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Switch or Adapter
Cable
Switch or Adapter
Switch or Adapter
Chapter 2