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Chapter 2. Operating the controller unit
This chapter describes the tasks required to operate the controller unit.
Tasks overview
Perform the tasks shown in
Task
Accessing the controls
Turning on or off the power
Monitoring controller unit
status through software
Checking fault indicator
lights for component failures
©
Copyright IBM Corp. 2000
Table 1
to maintain the controller unit after it is installed.
Table 1: Tasks overview
Description
To access the controller CRUs, battery, controller
fan, and indicator lights, you must remove the
controller unit bezel.
The controller unit usually runs continuously.
However, you might need to turn off and on the
power to move the controller unit or to perform
maintenance procedures.
Run the storage-management software
continuously. This software checks the storage
subsystem for failures and displays messages
indicating the type of failure and the recovery
procedure.
Component failures are indicated by lights on the
front and back of the controller unit and are
monitored by the storage-management software.
Note: The indicator lights identify problems
with the controller unit components, but you
might need more information to thoroughly
diagnose and repair the unit. Therefore, it is
important to use the storage-management
software to continuously monitor the status of the
controller unit.
See
"Accessing the
controls" on page
11
"Turning on the
power" on page 12
and
"Turning off
the power" on
page 13
"Monitoring status
through software"
on page 14
"Checking the
indicator lights" on
page 15
9
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