Domain Controller taking too long to authenticate users

Discussion in 'Server Networking' started by boba, Apr 3, 2008.

  1. boba

    boba Guest

    I have DC1 on VMware on SAN and DC2 standalone on same network (not on
    VMware). My DC1 was down on SAN and it took 15-20 minutes for users to login
    to network. What can I do that if DC1 is down DC2 picks up login quickly
    instead of 15-20 minutes. I would appreciate any help.

    boba, Apr 3, 2008
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  2. That is the way it is.
    DCs have different Roles.
    It takes all the DCs together to make things happen properly.

    The purpose of multiple DCs is not so that the network will keep "zipping"
    along if one does down because that won't happen. But what it does do is
    keep you from losing the Active Directory Database, which then allows you,
    in the event the DC is going to be dead for a while, to transfer all the
    FSMO Roles from the dead one to the remaining DC,...then things will keep
    going,...but "no promises" about minor delays and hickups until the Domain
    fully replicates and "settles in" with the new config.

    When the dead DC is brought back to life, the FSMO Roles can be transfered
    back to it and after a period of replication and "settling in" [again]
    things will be back to normal.

    Been there,..done that,'s happend here.

    Phillip Windell

    The views expressed, are my own and not those of my employer, or Microsoft,
    or anyone else associated with me, including my cats.
    Phillip Windell, Apr 3, 2008
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  3. Hello boba,

    Make sure that in a single forest, single domain environment all DC's are
    Global catalog servers and also DNS servers. If you use DHCP also think about
    splitting your scopes to 80/20 or 50/50

    Best regards

    Meinolf Weber
    Meinolf Weber, Apr 3, 2008
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