Emergency Power-Off - HP StorageWorks XP1024 - Disk Array Owner's Manual

Emergency power-off

Caution
Caution
34
A switch is provided on the control panel for an emergency powering off.
See Figure 4 on page
If you detect an abnormal sound, smell, or smoke, power off the disk
subsystem by operating the UNIT EMERGENCY POWER OFF switch
following the procedure below. The procedure for operating the switch is as
follows:
1. Push the operator panel cover at the location where PUSH is marked,
open the operator panel cover, then operate the EMERGENCY POWER
OFF switch.
2. In using a UNIT EMERGENCY POWER OFF switch, first pull it up
and then pull it toward you as illustrated in the figure below.
Pulling the UNIT EMERGENCY POWER OFF switch on the disk array
cabinet instantly shuts down the array, neglecting the system's power-off
sequence. Jobs in process are aborted and their integrity after recovery is
not guaranteed. Therefore, this method should be used only in an
emergency and not in normal operation.
The UNIT EMERGENCY POWER OFF switch on the disk array cabinet
only partially removes power from the array. AC input power remains
present at the primary circuit. Therefore, do not use the Emergency
Power-Off switch unless you need to power off of the unit as an emergency
measure.
When pulled, a UNIT EMERGENCY POWER OFF switch locks itself to
prevent further powering on and requires a trained and qualified HP field
engineer for recovery. Any time the unit Emergency/Only OFF switch is
pulled, place a service call to Hewlett-Packard to have the switch reset and
have the disk array restored to service.
HP StorageWorks Disk Arrays XP128/XP1024 Owner's Guide
35.