EonStor DS S12/S16/S24 Series Hardware Manual
3.8.6
Power Off Procedure
If you wish to power down the subsystem, please follow these steps:
NOTE
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.
Step 1.
Stop I/O access to the system.
Close your applications running on the host computers to stop all I/O access to the
subsystem.
Step 2.
Flush the cache.
Locate the C_Dirty LED on the controller module to check if there is still cached data
in the memory. Use the “Shutdown Controller” function in firmware to flush all cached
data. This prepares the RAID subsystem to be safely powered down.
Step 3.
Turn off the power.
Power off the subsystem using the power switch on each PSU. Once the subsystem
is powered down, other devices/enclosures that are connected to the subsystem can
be sequentially powered down.
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