Ich hab diesen Beitrag hier gefunden:
source: OS Support - OS Help from OS Experts
Quote:
Originally Posted by LauraEHunterMVP
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From a DC in your domain that is still online (there is no need to, nor would I recommend, powering the DC back on at this point), perform a metadata cleanup of the old DC as follows: Delete Failed DCs from Active Directory
If you wish to re-introduce this DC into your environment, power it up while NOT CONNECTED TO YOUR PRODUCTION NETWORK, and run dcpromo with the /forceremoval switch, after which you can reconnect it to your network and re-run dcpromo as though it is a normal member server that you are promoting for the first time.
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Default tombstone lifetime is 60 days; this can be lengthened or shortened, but 60 is the default.
As the DC has been offline for more than 60 days, the point here is that the OP -cannot- safely turn on that DC again without incurring a USN rollback state within his domain.
The appropriate steps here are:
Metadata cleanup/seize any necessary FSMO roles from an existing DC.
dcpromo /forceremoval on the tombstoned DC -while physically disconnected from the network-.
Do with the no-longer-tombstoned-DC as you will
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Was ich jetzt nicht verstanden habe ist die Vorgehensweise.
Wenn ich den Server nicht umbenenne und einfach "offline, also ohne Netzwerkkabel" dcpromo /Forceremoval ausführe und dann wieder dcpromo (online natürlich) mache, solls das gewesen sein?
Die Metadaten muss ich im jedenfall löschen oder?