Managing Hot-plugable controllers

Removing a controller

If you are replacing a controller, you should first add the new controller (see ``Adding a controller'') before removing the old controller.

CAUTION: You cannot remove the controller that supports the root filesystem without bringing down the system.

To remove a controller:

Select the slot containing the controller to be removed (click on the slot icon).
Turn on the attention indicator for the selected slot (optional). See ``Turning a slot attention indicator on or off''.
Suspend the driver instance for the controller. See ``Suspending a driver instance''.
NOTE: If you replaced a controller, you already suspended the driver instance for the controller you are removing when you added the new one.
Turn off power to the slot. See ``Turning slot power off''.
If the slot has a power LED verify that it is off.
Release the interlock for the slot (if it has one).
The Hot-plug Manager displays an unlocked interlock indicator (open padlock).
Disconnect the cable(s) and physically remove the controller from the slot.
NOTE: If you replaced a controller, you already moved cables from the old controller to the new one.
If you replaced a controller you might have already resumed the suspended driver instance onto the new controller, but if you do not need the suspended driver instance, delete it. See ``Deleting a driver''.