Steps to upgrade 2003 SBS with Exchange to 2012r2 Server with Exchange

I am upgrading my Small Business Server 2003 running Exchange 2005 to Server 2012r2 and Exchange 2013.  I am hoping that I can get a majority of the new server setup while keeping the existing SBS running.  I only have about 50 exchange accounts so I am taking this opportunity to do some "Clean Up" and manually setup all the account since there is not a direct upgrade path from 2005 to 2013.  I plan on backing everyone's mailbox to a PST and importing into their new account.  First question; Can I run them side by side while setting up since the SBS is a Primary Domain Controller?  What are the basic steps or obstacles?
TrailShredderIT ManagerAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Simon Butler (Sembee)ConsultantCommented:
"Can I run them side by side while setting up since the SBS is a Primary Domain Controller"


You cannot run Exchange 2013 in an environment with Exchange 2003.

I wouldn't do a PST migration for 50 users. The disruption it can cause would be too huge. Quick migration to Exchange 2010, rip out the SBS server, then up again to 2013. Zero downtime, zero risk, almost zero disruption.


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Server Software

From novice to tech pro — start learning today.