Maximum number of domain controllers in a domain

Hi,

Is there any restriction on number of domain controllers in domain?

Pls let me know if any limitation because of DNS also.

 

Personally I have run about 400 no problem. I could possibly see an issue at
around 5000 for a 2K domain or a 2K3 domain in 2K mode due to linked value
attribute issues. I seem to recall hearing about someone hitting a limit
previously around 850 or so DCs though in 2K (fixed in K3) which would seem to
indicate something was being stored in a normal multivalue attribute instead of
a multivalue linked-value attribute. I can't find any references to that at the
moment though.

 

I work in a gov't dept that currently has 2700+ DC's (nationwide) spread
evenly across 3 child domains. There was a serious issue when we hit 1000
DC's (maybe 1024) - I think it had something to do with KCC, but I do not
have the details. It is possible that network connectivity was partially at
fault (frame relay at the time - 56kb pipes) going to each server.