Recovering a rack or tower server that was not unmanaged correctly

If a Converged, NeXtScale, System x, or ThinkServer server was not unmanaged correctly, you must recover the server before you can remanage it.

Recovering a rack or tower server that was not unmanaged correctly by force management
You can recover server management by managing the server again using the force-management option
Recovering a System x or NeXtScale M4 server that was not unmanaged correctly by using the management controller
You can recover System x or NeXtScale M4 server management by using the management controller.
Recovering a ThinkSystem, Converged, NeXtScale, or System x M5 or M6 server that was not unmanaged correctly by resetting the management controller to factory defaults
You can recover ThinkSystem, Converged, NeXtScale, or System x M5 or M6 server management by resetting the baseboard management-controller (BMC) in the server to factory defaults.
Recovering a ThinkSystem, Converged, NeXtScale, or System x M5 or M6 server that was not unmanaged correctly by using the cimcli
You can recover ThinkSystem, Converged, NeXtScale, or System x server management by using the cimcli to clear the CIM subscriptions.
Recovering a ThinkServer server management that was not unmanaged correctly by using the management controller interface
You can recover management of a ThinkServer server by using the management controller web interface.

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