NEC S1400 NF1400-SR40E, Руководство пользователя

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7-3
c) When you power on the disk array unit for the first time, you need to provide initial setup for
the disk array unit by using the maintenance PC.
For detailed setup procedure, see Appendix C "Use of Maintenance PC".
(2) Notes on turning off AC power
The disk array unit periodically writes data in the cache memory onto a disk drive. If you turn off the
AC power before completion of write to the disk drive, the remaining data in the cache memory is
backed up by the battery backup units.
However, the backup time is limited. (The backup time depends on the number of installed battery
backup units and the battery charged status. See Section 2.2 "Write Cache Feature" for details.). To
securely protect data, write all the data remaining in cache memory in the disk array unit onto the disk
drive according to the following procedure. Then turn off the AC power according to the procedure
explained in "(3) Turning off AC power".
1. Turn off the power of the host system and the host bus adapter or the FC-AL switch.
Alternatively, offline all the paths connected to the host system that is connected with the disk
array unit.
2. Push the SHUTDOWN switch located on the front of the disk array unit by using the stick
attached to the key for at least 5 seconds.
Make sure that the POWER LED starts flashing, release the stick from the switch.
3. Confirm that [POWER LED] on the front panel of the disk array unit goes off, and then turn
off the AC power according to the procedure explained in "(3) Turning off AC power".
If [POWER LED] lights or flashes, the data in the cache memory is being written onto the
disk drive. Do not turn off the AC power.