Domain Controller as File Share Witness for an Exchange 2010 DAG

Edit – post removed!

This post was originally written based on the Exchange 2010 beta bits before the Technet documentation was updated to reflect the actual required permissions for a DAG’s FSW. Consequently, it had a major error. You’ll want to visit Devin’s page for a full explanation and the correct way to set up the DAG. Always helps when you can read the documentation, right? 🙂


Recent content I've written for you—just for you!— to enjoy while you're here.


Quick commentary and links to other sources you'll find interesting. I promise.


Some personal background, links to related projects, and other ways to connect.

Hi there. My name is Tom Pacyk and this is my small home on the web. I love the intersection of design, technology, and communication, which is a combination that led me to a career in sales and marketing roles at places like Zoom and ServiceNow. They're a bit old now, but I also had the opportunity to publish a couple of books along the way.

Portland, Oregon is home for me, my wife Beth, and our three kids, but I'm actually a Midwestern transplant—I grew up in the Chicago suburbs and went to school at Purdue and Illinois. When I find some free time I'm probably going to concerts, rooting for the Portland Timbers, or working on my Sunshine Burn Photography project.