HP StorageWorks XP48 - Disk Array, Owner'S Manual

Page: 38 / 124

38 HP SureStore E Disk Array XP512/XP48: Owner’s Guide
Powering Off the Disk Array
Situations may arise in the operation of the disk array that require the user
to power off the disk array. These situations include:
• UNIT EMERGENCY POWER OFF
• Planned power-off
UNIT EMERGENCY POWER OFF
An emergency is a critical situation such as a physical plant catastrophe
such as a flood, hurricane, tornado, or a threat of injury or death to a person.
In an emergency, the critical need is to quickly remove power from the disk
array. A quick restart is not necessary.
In an emergency, the operator should trip the UNIT EMERGENCY
POWER OFF switch. The UNIT EMERGENCY POWER OFF switch is
located on the control panel.
Caution
Use this switch only in case of an emergency. An HP Service Representative
is required to reset the UNIT EMERGENCY POWER OFF and to power on
the disk array.
To power off the disk array in an emergency:
1. Open the control panel cover by pushing on the point marked PUSH.
2. Pull the UNIT EMERGENCY POWER OFF switch, figure 6 (page 36),
up and then out toward you as illustrated on the switch.
3. Call the HP support center. The UNIT EMERGENCY POWER OFF
switch must be reset by an HP Service Representative before the disk
array can be powered on again.