Replacing An Interconnect Chassis; Removing The Interconnect From The Rack; Interconnect Fan Tray - HP Cluster Platform Interconnects v2010 Manual

Figure 5-6: Interconnect Fan Tray

5.4 Replacing an interconnect chassis

The communications ports on the interconnect face toward the rear of the rack.
The location of the interconnect in the rack depends on the specific configuration
of your cluster. Up to four 14U interconnects might be installed in a single rack,
and their rack positions might vary depending on the configuration rules for your
system. The most common location for the 3U and 5U interconnects is at rack
position 0, at the very bottom of the rack.
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A fully loaded 14U interconnect weighs approximately 32 kg (70 lb).
Removing a fully loaded 14U chassis requires at least two people
suitably equipped and trained to lift the interconnect out of the rack.
If you are removing any size switch from the topmost position in a
rack, always use two people and a stable, elevated work platform or
equivalent.

5.4.1 Removing the interconnect from the rack

You remove an interconnect from the rear of the rack, which might have limited
working room depending on how close the rack is located to walls or other racks.
Take note of the safety warning concerning the safe handling of the interconnect.
A Myrinet system interconnect with a a 5U (9-slot) chassis uses a different type of
rack kit than the larger Myrinet interconnect models. The larger interconnect also
requires a ventilating baffle. Subsequently, there are two different procedures for
removing and replacing an interconnect chassis in the rack. The two procedures
are described in this section.
Procedure a 5U Interconnect
To remove a 5U system interconnect from the rack, use the following procedure:
1. Bring the cluster to an appropriate state for switch component removal and
put the rack into a safe and stable state for component removal.
2. At the rack's power distribution unit (PDU), power off the circuit that supplies
power to the interconnect. Disconnect the power cable at the rear of the
interconnect chassis.
3. Prepare a suitable work surface and clear a pathway for removal of the
interconnect. Ensure that there are no cables or other obstructions underfoot.
4. At the rear of the rack, ensure that the high-speed network cables are properly
labeled for their appropriate ports. This is important if you are planning to
replace a defective interconnect.
Warning _______________________
Replacing components 5-5