*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 Link UP LEDs of the controller's HL0 and HL1 go off.)
*2 – If you turn off the AC power of the 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 the disk array unit during write operation (with SDN LED flashing) by mistake, turn on the AC power of the entire disk array unit (including the power of the additional disk enclosure) 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 board 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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