Compaq Infortrend manual Front Panel View of Controller Failure

Repeat the process to map all the logical units to host ID/LUNs.

Front Panel View of Controller Failure

What will happen when one of the controllers fails?

Should one of the controllers fail, the existing controller will automatically take over within a few seconds.

The red ATTEN LED will light up, and the message "Redundant Ctlr Failure Detected" will appear on the LCD. Users will be notified by audible alarm.

Redundant Ctlr Failure Detected

NOTE:

•Although the existing controller will keep the system working. You should contact your system vendor for a replacement controller as soon as possible. Your vendor should be able to provide the appropriate replacement unit.

•Some operating systems (SCO, UnixWare, and OpenServer, for example) will not attempt to retry accessing the hard disk drives while controller is taking over.

When and how is the failed controller replaced?

Remove the failed controller after the "working" controller has taken over. For a controller with hot-plug capability, all you have to do is to remove the failed controller.

The replacement controller has to be pre-configured as the "Secondary

Controller." (The replacement controller provided by your supplier should have been configured as the Secondary controller. It is recommended to safety check the status of the replacement controller before installing it to your redundant system. Simply attach power to the replacement and configure it as "Secondary." When safety check is done, remove the failed controller and install the replacement controller into its place.)

When the replacement is connected, the "Auto-Failback" will start automatically. If the replacement controller does not initialize, execute the following steps to bring the new controller online. Press [ENT] for 2 seconds on the existing controller to enter the main menu.

Use ▼ or ▲ to choose "View and Edit Peripheral Dev..," then press [ENT].

View and Edit Peripheral Dev

Redundant Controller 10-25