State of Michigan Turns to Immersion for Large Scale Exchange Migration

MDIT Background

The State of Michigan's Department of Information Technology (MDIT) is responsible for providing centralized hosting services for Michigan's state agencies, including a variety of mainframes and some 4,000 servers. Since 2004, MDIT has migrated 36 aging agency-based computer/server rooms and equipment into one of three secure data centers. This consolidation has improved the security, reliability, manageability and availability of critical agency applications. It has saved the State of Michigan over $19 million and reclaimed 30,000 square feet of office space.

Immersion's Challenge

For nearly a decade, MDIT managed both Exchange and GroupWise email systems for its users. MDIT had approximately 20,000 users on the Microsoft Exchange messaging platform and approximately 40,000 on the GroupWise messaging platform. The users were distributed across Michigan and each office size varied from a single user to hundreds of users. MDIT hired Immersion Technology Services to migrate all existing GroupWise email and archives into Microsoft Exchange.

MDIT Migration Success

Converting such a large amount of users with minimal disruption of the business day was an essential requirement of this contract. However, business days for many users, such as law enforcement, included a 24 hour work day. Our team was diligent in fulfilling this requirement and all switching of employee mailboxes was closely monitored and occurred with the least disruption in their work days.

Immersion Technology Services not only met MDIT's requirements, but we also accomplished this large-scale complex migration ahead of schedule and within budget. Our project deliverables included the following:

  • Pre-migration actions included email/archive information gathering and validation.
  • Migration actions included migrating all existing GroupWise emails and archives to Microsoft Exchange. Immersion was also responsible for any email/archive repairs.
  • Post-migration actions included troubleshooting client issues and any post office clean-up


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