Migrating from NT4 with multiple domains (3)

Posted on 2004-11-08
Last Modified: 2010-04-19
Got a complete NT 4 setup, and want to go to 2003.  Multiple domains.  Basically, I'm looking for material to read up on for this process.  500 points will be split for advice.
Question by:neowolf219
    LVL 95

    Expert Comment

    by:Lee W, MVP
    I've done this.  It's relatively simple.  I upgraded the "master" domain first - or at least the one I wanted to be the "master" domain (ie., then I upgraded the other two domains afterward, only told them to be domains such as "" and "" (Incidentally, I did this MONTHS apart).

    Be aware that trusts in active directory become transitive - meaning that if DomainA trusts DomainB and DomainB trusts DomainC, then DomainA Trusts DomainC (this wasn't the case with NT4 domains).

    It is recommended that you flatten you domain structure though - as this article points out, many of the reasons for having multiple domains disappear with active directory:
    LVL 3

    Author Comment

    When you upgrade each domain, what did you do.  I've heard alot about putting in a new NT4 BDC, upgrading it to PDC and then migrating.  Do you (or anyone) have articles from MS knowledgebase or deployment guides for the "gotchas" that are involved.

    Thanks for the response.
    LVL 95

    Expert Comment

    by:Lee W, MVP
    From my experience, you upgrade the domains first deciding which will be the top level (, then any second level domain.  The procedure is the same as a single domain upgrade.  That is to say, you have to upgrade the PDC first.  However, what we did for the main domain was buy a new server, install NT4 on it as a bdc, promote it to PDC, then ran the upgrade to 2000.  Read through the article I posted.

    (also, as I'm sure the article states, it's best to yank one BDC from the network prior to the upgrade.  Doing so will allow you to recover if there's a problem with the Active Directory Upgrade.

    (How many users do you have?  Computers?)
    LVL 95

    Accepted Solution

    More reading:

    (And by the way, read alot - this is a MAJOR change to your network and no two paragraph answer here should really be considered sufficient to let you do an upgrade of this magnitude.

    Featured Post

    How your wiki can always stay up-to-date

    Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
    - Increase transparency
    - Onboard new hires faster
    - Access from mobile/offline

    Join & Write a Comment

    The HP utility "HP Lights-Out Online Configuration Utility for Windows Server 2003/2008" could be of great use when it comes to remotely configure a HP servers ILO WITHOUT rebooting the server. We would only need to create and run scripts using thi…
    A quick step-by-step overview of installing and configuring Carbonite Server Backup.
    This video discusses moving either the default database or any database to a new volume.
    In this seventh video of the Xpdf series, we discuss and demonstrate the PDFfonts utility, which lists all the fonts used in a PDF file. It does this via a command line interface, making it suitable for use in programs, scripts, batch files — any pl…

    745 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    18 Experts available now in Live!

    Get 1:1 Help Now