NEC NF2300-SR412E User Manual page 100

*1 – The shut down switch has a locking mechanism. To turn on/off the switch, hold
and raise the lever.
– While the shut down switch is on, the disk array unit does not accept any I/O
operation by the host system.
(The LINKUP LEDs of the controller's HL0 and HL1 go off.)
*2 – If you turn off the AC power of disk array unit during write operation (with SDN
LED flashing) by mistake, the backup mode is enabled. (In this case, the
controller's [BAT LED] goes on.)
– If you turn off the AC power of disk array unit during write operation (with SDN
LED flashing) by mistake, turn on the AC power of the entire disk array unit
again. When the disk array unit has started (when the READY LED of the
controller on the array controller stops flashing and enters the on state), turn off
the shut down switch and then turn it on to complete the write operation.
– Even if you turn off the AC power after [SDN LED] goes on, [BAT LED] goes
on in the following case:
NEC Storage DynamicDataReplication is used, but you attempt to write the
remaining cache data before executing the Unpair command.
In the above case, turn on the AC power of the entire disk array unit again.
When the disk array unit has started (when the READY LED of the controller on
the array controller stops flashing and enters the on state), turn off the shut down
switch. Then, execute the Unpair command for paired disks under NEC Storage
DynamicDataReplication, and turn on the shut down switch to complete the write
operation.
*3 – Even if you forget to turn off the shut down switch, the disk array unit starts
normally when being turned on next time, and accepts I/O operation by the host
system. (Normal operation)
– Turning off the shut down switch does not influence general operation of the disk
array unit.
– When turning off the disk array unit again, turn off the shut down switch and then
turn it on. The system starts writing data remaining in cache memory onto the
disk drive.
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