Chapter 1. Product Description
EK–SMCPR–UG. A01
387404-001
1–21
4) A controlled power shut down is completed on all the subsystem cabinets.
NOTE
If the master EMU is not communicating with the array
controller or the array controller does not support a
controlled shut down, the master EMU commands all
enclosures to perform an immediate power shut down.
1.3.3.3 Expansion Enclosure Initiated Power Shut Down
NOTE
This procedure will only work when the array controller(s)
have been shut down.
When you press the PVA dc power switch on the expansion enclosure and the expansion
EMU can communicate with the master EMU, one of the following power shut down
operations occurs:
NOTE
When the expansion EMU
cannot communicate with the
master EMU, pressing the dc power switch causes an
immediate controlled power shut down of only the
expansion enclosure.
1. The slave EMU changes its status to indicate that the dc power switch was pressed.
2. The master EMU notes the change in status.
3. The master EMU notifies the array controller of the change in status.
4. When the array controller is ready, it sends a controlled power shut down command
to the master EMU.
5. A controlled power shut down is completed on all the subsystem cabinets.
NOTE
If the master EMU is not communicating with the array
controller or the array controller does not support a
controlled shut down, the master EMU commands all
enclosures to perform an immediate power shut down.