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7.2
Power On/Off of Disk Array Unit
This section describes how to turn on or off the power of the disk array unit. Turning on or
off the power carelessly may cause some data to be broken, some software to operate
incorrectly, and/or the unit to be defected.
(1) Turning on AC power
a)
b)
[Power-on procedure]
Turn on the power switches in the following order (1) to (3):
Before turning on the AC power, check for loose disk drives by pushing each
disk drive.
Turn on all the disk enclosures connected with the array controller, and then
turn on the array controller. Alternatively, turn on the array controller and all
the disk enclosures connected with the array controller at the same time.
The disk array unit has the redundant power configuration to prevent the entire
unit from shutting down due to a single failure. Therefore, when turning on
the disk array unit, turn on all the power switches (of the array controller and
disk enclosures) at the rear of the unit.
When turning on the power switches, confirm that the POWER GOOD LED
(green) of the power supply and the POWER LED (green) on the front panel of
the unit go on. Power supply starts, and the POWER LED (green) is on while
the power switches are on.
The disk array unit performs the self-test and initialization immediately after
the power is turned on. When the self-test and initialization terminate and the
disk array unit becomes ready, the READY LED on the array controller stops
flashing and enters the on state.
Confirm that the READY LED is on, and then turn on the host system.
The disk array unit takes four minutes (at maximum) to start.
(1) Power switches of disk enclosures
(2) Power switches of array controller
(May be turned on at the same time the power switches of disk enclosures are turned on.)
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(3) Host system
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