Technical data

Listing and Managing Server Hardware
Powering Server Cabinets On and Off
HP System Partitions Guide: Administration for nPartitions—rp7410
EMSP—[e-mail]
255
Changes in cabinet power status do not affect the standby power that
supplies system utilities such as the service processor (GSP or MP) and
keeps some fans running. These utilities and fans can receive power as
long as standby power is enabled.
The way in which standby power is enabled and disabled differs for
various HP server models. On HP Superdome servers, standby cabinet
power is switched using the power breakers on the rear of the cabinet.
On HP rp8400 servers, standby power is enabled through the power
cords connecting to the inputs on the rear of the cabinet.
Cabinet Power
Switch
This procedure (Virtual Front Panel, and using the cabinet power switch)
turns a cabinet’s 48-volt power on or off using cabinet hardware.
Step 1. Log in to the system’s service processor and access the Virtual Front
Panel for the system.
From the service processor Main menu, enter VFP to access the Virtual
Front Panel menu, then enter S to access the “system VFP” that displays
the current status for all partitions.
Step 2. Check the VFP status to see whether any cabinet hardware is running
HP-UX.
Any nPartition whose state is “HP-UX heartbeat” is running HP-UX and
thus should not have its hardware powered off until after HP-UX is shut
down.
Type ^b (Control-b) to exit the VFP.
Step 3. Shut down HP-UX running on any cabinet hardware that you plan to
power off.
Step 4. Confirm that nobody else is using or servicing the cabinet hardware you
plan to power on or off.
You should both physically inspect the hardware, and check whether
others are remotely accessing the system’s service processor (using the
Command menu’s WHO command).
Step 5. Access the cabinet hardware and flip the power switch (located on the
cabinet’s front) to the on or off position in order to power the cabinet on
or off.
HP Restricted / DRAFT
DRAFT NOV 2001