[Samba] maximum ad domain controller unavialability time

Alex MacCuish alex at maccuish.org.uk
Tue Apr 14 09:02:03 UTC 2020

HI Valery

A DC is never "removed" automatically from AD, but, at least from the 
Windows perspective, the longest period would be the tombstone lifetime. 
After this has passed, the DC would have objects "lingering", as the 
deletion of an object could have already occurred at other DCs and then 
the marker of the deletion itself removed, which of course means there 
is no way to communicate the deletion after this final point. I believe 
Windows automatically blocks replication and disables the netlogon 
service when it detects such a situation. I'm not sure what samba would do.


On 14/04/2020 09:37, Zhuchenko Valery via samba wrote:
> Hi, all.
> What is greatest period for AD DC (non FSMO) can be unavailable, for
> example, because network segment is unavailable for long time (3, 4 weeks)?
> Is the controller will be removed from AD automatically?
> And what to do after this network segment will become available?
> I have read about tombstoneLifeTime attribute of Directory Service
> (Configuration, Services, Windows NT), which default value is 180 days.
> But what is about replication?
> Thank you for your explanation.
> Best regards,
> Valery

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