Maximum number of domain controllers in a domain

Discussion in 'Active Directory' started by Ramanashree, Sep 1, 2005.

  1. Ramanashree

    Ramanashree Guest


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

    Pls let me know if any limitation because of DNS also.
    Ramanashree, Sep 1, 2005
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  2. 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.
    Joe Richards [MVP], Sep 1, 2005
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  3. Ramanashree

    MMM Guest

    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.
    MMM, Sep 2, 2005
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