NEC NF2300-SR412E User Manual page 93

<Addition procedure>
(1) Power check
Make sure that the power switches of the disk array unit and host unit are set to OFF
and the power plugs are removed from AC outlets.
When you add cache memory, confirm that the power switch of the disk
array unit is off and the [BAT LED] of each controller is off.
Do not add cache memory if the [BAT LED] of a controller is on. While
the [BAT LED] is on, the cache memory in the array controller still
contains data that is to be written into the disk drive. If you add new
cache memory in this status, the data remaining in the cache memory of
the array controller is lost.
If [BAT LED] is on, perform the procedure explained in Section 7.2 "(2)
Notes on turning off AC power" not to leave any unwritten data in the
cache memory of the array controller. After that, turn off the power switch
of the disk array unit and then add new cache memory.
(2) Removal of cables
Remove all the cables connected to the controllers. Write down the connections
between the cables to be removed and the mating connectors.
(3) Removal of controller
Loosen a screw securing the ejector of the target controller, open the ejector pulling
o
it by 90 , and then pull out the controller. (When the controller is pulled out, the
protection shutter in the unit closes and it is locked.)
Be careful that it is hot.
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