HP StorageWorks XP12000 HP StorageWorks XP12000 Disk Array Owner's Guide (AE00 - Page 29

Planned power off, Emergency power off, To power off the disk array in an emergency:

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Planned power off Occasionally, you may need to plan a site power outage, such as during alterations to the data center, inspections, or work by the electric company. If a scheduled power outage will affect the disk array, contact your HP support representative to schedule a planned power off. CAUTION: Only a trained HP support representative can shut down and power off the disk array. Do not attempt to power down the disk array other than during an emergency. Emergency power off In an emergency, it is critical to remove power to the disk array as quickly as possible. CAUTION: Performing the emergency power off procedure immediately shuts down the disk array, neglecting the array's normal power off sequence. Jobs in process are aborted and their integrity after recovery is not guaranteed. Use this power off method only in an emergency. Only a qualified HP support representative can reset the switch and restore power to the disk array. Emergency situations in which you should consider performing the emergency power off procedure are: • A physical location catastrophe such as a flood, hurricane, tornado, or earthquake • Any circumstance that presents the threat of injury or death to a person • You detect any smoke, abnormal loud noise, or smell coming from the disk array To power off the disk array in an emergency: 1. Locate the UNIT EMERGENCY POWER OFF switch on the back side of the DKC. Its location is shown in the following figure. XP12000 Disk Array Owner's Guide 29

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Planned power off
Occasionally, you may need to plan a site power outage, such as during alterations to the data
center, inspections, or work by the electric company. If a scheduled power outage will affect the disk
array, contact your HP support representative to schedule a planned power off.
CAUTION:
Only a trained HP support representative can shut down and power off the disk array.
Do not attempt to power down the disk array other than during an emergency.
Emergency power off
In an emergency, it is critical to remove power to the disk array as quickly as possible.
CAUTION:
Performing the emergency power off procedure immediately shuts down the disk array, neglecting the
array's normal power off sequence. Jobs in process are aborted and their integrity after recovery is not
guaranteed. Use this power off method
only
in an emergency. Only a qualified HP support representative
can reset the switch and restore power to the disk array.
Emergency situations in which you should consider performing the emergency power off procedure
are:
•
A physical location catastrophe such as a flood, hurricane, tornado, or earthquake
•
Any circumstance that presents the threat of injury or death to a person
•
You detect any smoke, abnormal loud noise, or smell coming from the disk array
To power off the disk array in an emergency:
1.
Locate the UNIT EMERGENCY POWER OFF switch on the back side of the DKC. Its location is
shown in the following figure.
XP12000 Disk Array Owner's Guide
29