SYSTEM STATE. A particular configuration of a system by virtue of the
position or state of each switch, circuit breaker, solid-state digital
device, or other multistate circuit device; or by virtue of the
mechanical configuration of doors, equipment, or machines that make up
the system. External states include solid-state logic outside the
facility barrier, the position of external switches, and
configurations of mechanical devices outside the HEMP barrier.
Internal states are determined by the configurations of mechanical
devices inside the HEMP barrier or by particular circuit connections
realized when such things as switches, circuit breakers, thermostatic
control, pressure controls, and door interlocks are in a particular
on/off arrangement, and electronic states occurring within the system.
And this may answer your question more specifically:
The system state contains a number of items:
COM + Database
Some of these items are only included if the specified service is
installed (AD, IIS, Certificates).
If you need to restore a server, you will need this state to recover
the registry, or your AD Domain, or IIS sites.
You can restore system state to the same server, or another server
with identical hardware. Microsoft does not support restoring system
state to different hardware (see this article), however it is possible
in some occasions, and with some parts of the system state, for
example the IIS metabase. In that guess its really a case of try it an
see, but its not a reccomended solution.
Source and more answers