Powering Down The Disk Array - HP StorageWorks XP20000/XP24000 - Disk Array Owner's Manual

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Powering down the disk array

Two situations may arise when you need to power down the system:
Planned power off
Emergency power off
40 Operating the HP XP24000/XP20000 Disk Array
Label Indicator
BS-ON
LED (Amber)
PS-ON LED (Green)
PS ENABLE Switch
PS ON/OFF Switch
PS
Switch
REMOTE/LOCAL
CHK RST Switch
Description
During normal operation, this LED should be on.
ON: The disk array is plugged in and receiving power
from the primary AC outlet. The SVP is receiving
power from the outlet.
OFF: The disk array is not receiving power from the
primary AC outlet. Check the electrical outlets in your
building.
During normal operation, this LED should be on.
ON: The PS ON/OFF switch is on. If the SUB-SYSTEM
READY light (1) is also on, the disk array is ready to
receive data.
OFF: The PS ON/OFF switch is off and the disk array
is not ready to receive data.
Used to enable the PS ON/OFF switch (11). During
normal operation, this switch should be in the "Disable"
position (opposite the ENABLE position).
ENABLE: The PS ON/OFF switch can be used.
DISABLE: The PS ON/OFF switch cannot be used.
Do not change the switch position unless directed to
do so by HP service personnel.
Used to power on/off the disk array. During normal op-
eration, this switch should be in the ON position.
The switch functions only if:
the PS ENABLE switch (10) is in the ENABLE position,
AND the PS REMOTE/LOCAL switch (12) is in the LOCAL
position. Do not change the switch position unless
directed to do so by HP service personnel.
Determines how the disk array is powered on or off.
During normal operation, this switch may be in either
position, depending on your operating environment.
REMOTE: Disk array is powered on/off by the instruc-
tions of the host PCI (mainframe only).
LOCAL: Disk array is powered on/off by the PS
ON/OFF switch (11). Do not change the switch pos-
ition unless directed to do so by HP service personnel.
Used by an HP support representative to test the function-
ing of the LEDs on the control panel or to reset alarms.
Do not change the switch position unless directed to do
so by HP service personnel.