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When One of the Controller Fails...
What will happen when the one of the controllers fails?
When one of the controller fails, the other controller will take over in a
few seconds (about 8 seconds).
The red ATTEN LED will light up, and the
message
"Redundant
Detected" will appear on the LCD. The
beeper in the controller will start to beep.
The message "Controller ALERT: Redundant Controller Failure
Detected" will also appear on the screen of the terminal interface.
After a controller takes over, it will simultaneously act as both
controllers. If it is the Primary controller that failed, the Secondary
Controller becomes the Primary Controller. If the failed controller is
replaced by a new one later on, the new controller will act as the
Secondary Controller.
Some operating systems will not retry accessing the hard disk drives.
When and How is the Failed Controller Replaced?
Remove the failed controller after the take-over of the "working"
controller has been completed.
The new controller has to be pre-configured as the 'Secondary
Controller' or in the "Autocfg" mode. (Configure the new controller
without the redundant cable and SCSI cables connected.)
198
Redundant Ctlr
Ctlr
Failure
Failure Detected
User's Guide
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