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4.4 Power Off Procedure
If you wish to power down the subsystem, please follow these steps:
If you wish to power down the subsystem, please ensure that no time-consuming
processes, like "Regenerate Logical Drive Parity" or a "Media Scan," are taking
place.
1. Stop I/O access to the system
Stop all I/O accesses from the host computers to the subsystem. Please refer to
the related documentation of your host applications and operating system.
2. Disconnect the host
The host must be disconnected from the subsystem. To do this, disconnect the
cables from both the host and the subsystem.
3. Flush the cache
Use the "Shutdown Controller" function to flush all cached data. This prepares
the RAID subsystem to be powered down.
4. Turn off the power
Turn off the power switches at the power supply modules. Once the RAID
subsystem has been powered down, other devices that are connected to the
subsystem can be powered down.
Power Off Procedure
NOTE:
Chapter 4: Connection and Operation
4-11
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