Active Directory Migration


Business Situation

The customer had expanded through acquisition and all business units were using different Active Directory domains at varying levels of support and function. As a result, Active Directory policies were separately maintained creating fragmentation across the group in terms of configuration. This directly resulted in inefficiencies in deploying new configurations, reporting on compliance, and integrating with applications that required Active Directory.

The challenge

The customer had decided on a target Active Directory with a single Forest and single Domain for the entire group.

  • Challenge was defining a target Active Directory configuration and support model that would meet the requirements of the group.
  • The next challenge was how to migrate existing users and computers to the new Active Directory.
  • Implementing the Azure AD Sync to O365 for Password Synchronisation
  • Make sure the Application /resources residing at legacy domain also accessible from new domain after the migration.

The solution

Enmarq was responsible for establishing the programme of work for defining the Active Directory configuration, defining the support model, defining the migration processes, and commencing the first migrations.

The Active Directory configurations was focused on developing a central Active Directory with appropriate local delegation. As such, the configuration of security groups, Organisational Units, and Group Policy Objects to support a role based delegation model was defined.

A cross forest Active Directory migration process was defined with a range of Experts. The migration process acknowledged the requirements for a period of co-existence across both existing and new Active Directory environments, including consideration for AD dependent applications such as Microsoft Exchange.

Enmarq has decided to go with Quest Migration Manager Tool for Users, Computer / File Server / Application Server Migration.



Customer Benefits

  • Ease of administration since all the resources come under single domain.
  • Flexibility of accessing the resources from anywhere
  • Since all the locations are interconnected and have individual WDC’s the availability in increased.
  • Delegation of administration.
  • Increased reliability
  • Reduced IT cost through elimination of server maintenance