User`s guide

Powering Off
007-4522-003 45
Powering Off the 2 Gb TP9100 Rack
Besides the main breaker switch at the bottom of each PDU, the rack PDUs have breaker
switches at each 12U of space so that you can power off the enclosures in groups of four
and leave the others powered on. Figure 2-3 shows their locations.
To power off the entire rack, follow these steps:
1. Ensure that users are logged off of the affected systems.
2. Move the power switch on the rear of each PSU/cooling module (2 per enclosure) to
the “Off” position (position “
I”=on, “O”=off).
3. Turn off all of the socket group breakers on each PDU (position “
I”=on, “O”=off).
These breakers can be identified by the illuminated green switches.
4. Push down the main breaker switch at the bottom of each PDU so that the word
OFF
shows.
5. If appropriate, disconnect the PDU power cords from the power sources
.