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How long will it take to do an in-place upgrade?

How long you can expect an in-place upgrade of Microsoft Exchange Server to take.

How long should we expect an in-place upgrade to take on a system with approximately 7 GB over four mail stores?
Thirty minutes to an hour. The upgrade really shouldn't take all night. You want to include the upgrade in a scheduled maintenance window, just to ensure you set proper expectations for your customers. Maybe schedule it on Sunday between 2 a.m. and 3 a.m. if you are in a critical work environment based in the United States.

If it takes more than an hour, I would suggest something varies on hardware or overall performance of the disk subsystem. In other words, your mileage may vary.

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Related information from the Learning Guide:

  • Learning Guide: Exchange Migration
  • Reference Center: Migration advice

  • Dig Deeper on Exchange Server setup and troubleshooting