Adaptec 7220ss User Guide

If the other controller was unplugged then plugged 

back in or replaced by a different controller, the surviving 
controller will automatically unkill the other controller.

To unkill the other controller:

From the System Menu, select Other Controller Menu and 
press Enter.

The Other Controller menu is only available if the system is 
configured to run in active-active mode.

The Other Controller menu appears.

Select Unkill Other and press Enter.

The system confirms that you want to make the change. 

Select Yes and press Enter to make the change. 

The other controller boots. 

Press Esc to return to the Other Controller menu.

You can disable SCSI channel 3 from the Flash Utility.

Because disabling SCSI channel 3 may affect the 

configuration of nonvolatile memory, SCSI channel 3 
cannot be disabled if host data is present. Shut down the 
controller gracefully to flush out host data (see 

), or select Clear Battery Back Up 

from the Flash Utility menu, which will clear the host data.

Disabling SCSI channel 3 results in only one available host channel, 
meaning that the controller can only be run in stand-alone single-
port mode.