Oracle Sun Datacenter InfiniBand Switch 648, Руководство по установке

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Preparing the Site 11
Related Information
■
“InfiniBand Cable Guidelines” on page 11
■
“Connecting InfiniBand Cables” on page 108
InfiniBand Cable Guidelines
Proper InfiniBand cable installation requires the following:
1. Plan the cable routes and cable length needs, identifying problematic cable route
bends, minimizing the length of continuous vertical runs to no more than 2 meters
(7 feet), and specifying hardware to support cable routing.
See “InfiniBand Cable Path Lengths” on page 12 .
2. Carry the entire cable to the points of connection and unroll the cable from the
first connection point to the second. Keep the coil closed and pause to enable the
cable to relax as it is unrolled and moved through turns.
3. Ensure that cable route turns are larger than 85 mm (3.4 inches) radius for optical
cables and 127 mm (5 inches) radius for copper cables. Find alternative routes for
turns that are tighter.
4. Secure the cable to hard points and bundle it with soft, hook-and-loop fasteners.
See “InfiniBand Cable Bundling” on page 13 .
5. Mediate the slack between securing points to maintain minimal cable tension and
proper support.
Do not straighten the cable to
correct a bend that is too tight.
Leave the cable bend as is.
Do not hang the cable for a length
more than 2 meters (7 feet).
Minimize the hanging weight
with intermediate retention
points.
Do not drop the cable or
connectors from any height.
Gently set the cable down, resting
the cable connectors on a stable
surface.
Do not cinch the cable with hard
fasteners or cable ties. Use soft
hook-and-loop fastener for
bundling and securing cables.
Do not drag the cable or its
connectors over any surface.
Carry the entire cable to and from
the points of connection.
Do not force the cable connector
into the receptacle by pushing on
the cable. Apply connection or
disconnection forces at the
connector only.