Chapter 4: Subsystem Operation and Monitoring
Power Off Procedure
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4.2 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 back of controller
module to check if there is still cached data in memory.
Use the “Shutdown Controller” function 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.
4.3 System
Monitoring
Overview
The subsystem is equipped with a variety of self-monitoring features that
help keep system administrators informed of the subsystem’s operational
status. These monitoring features provide vital feedback to help you
maintain the operational integrity. Prompt response to warnings and
notifications is necessary and helps ensure the longevity of the subsystem.
Self-monitoring features include:
•
Firmware (FW)
: The RAID controller(s) in the subsystem come with
preinstalled FW, which can be accessed using either a PC hyper-
