Gartner Research

Q&A: Consolidation of Active Directory Forests and Domains

Published: 17 June 2010

ID: G00201333

Analyst(s): Andrew Walls


Consolidation of Active Directory forests and domains reduces the complexity of AD environments, but requires careful planning and coordination, and provides benefits that are difficult to quantify.

Table Of Contents
  • What is the optimal number of Active Directory forests and domains?
  • Should I have separate domains or forests for machines and users?
  • Does consolidation improve or degrade security performance?
  • Which should come first, upgrade all AD systems to a common version or consolidate?
  • In order to move machines to a new domain, do workstations and servers have to be manually reconfigured?
  • Can I cost-justify the consolidation project?
  • Once AD is consolidated, are we done?

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