Power-Off Procedure - RAID Xanadu User Manual

6.2

Power-off Procedure

(1) When powering off, first turn off the power of the business server.
(2) Press the power button at the right end of the rear face of the disk array unit for at least five
seconds.
(The READY LED blinks rapidly if power is disrupted.)
(If two controllers are installed, press the power button on either of the controllers. You need
not press both buttons.)
(Pressing the power button for 15 seconds or longer continuously forcibly turns off the power,
which may be bad for the disk array unit. Accordingly, stop pressing the button as soon as
possible after power-off is accepted.)
In this processing, the disk array unit writes to disk all data in the cache that has not yet been
written to disk. After writing is completed, it turns off the DC power in the unit.
(3) The power of the disk array unit and of disk enclosures is turned off within ten minutes. (All
LEDs other than those on the power supplies go off and the fans stop rotating.)
(4) Turn off the AC power of the disk array unit, extended BBU, and disk enclosures.
Disconnect the AC power of the disk array unit and disk enclosures by unplugging the AC
input receptacle or disconnecting it at a breaker.
[Power-off procedure]
(1) Turn off the power
of the business
server.
Start power-off for the disk array unit and disk enclosures after power-off of the
business server is completed.
Turn off the AC power only after the RDY LEDs go off.
If one or more disk enclosures are connected to the disk array unit, always turn
off the AC power of the disk enclosures after power-off of the disk array unit is
completed.
(2) Press the power button.
Figure 6.2.1 Power-off Procedure
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(4) Turn off the AC power.
(3) Make sure that the RDY LEDs
go off.