Migrating MS DHCP Server on small network while clients are active

My customer's network has about 20 PCs on it.  I have two servers with the DHCP Server role installed--an old one, which currently handles all DHCP requests, and a new one, which is presently unconfigured.  

Given that this is a small, relatively unchanging network, can I migrate from one server to the other while clients are online and working, provided I do it quickly?  I'd use the following procedure:  export DHCP data from old server, stop DHCP server service on old server, import DHCP data on new server, authorize new server, deauthorize old server.  I can't imagine this would interrupt client connectivity if done quickly, but perhaps I'm wrong?
AA-in-CAAsked:
Who is Participating?

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

x
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.

Scott CSenior EngineerCommented:
No, you are correct.  The clients will continue to have their DHCP lease for the configured amount of time.  8 days I believe is the default.

By the time they need a new lease, you will have the new DHCP scope configured and up.  

Your users shouldn't notice a thing.

In fact I did just this a couple of weeks ago when bringing up a new 2012 R2 server to replace a 2003 one.

I had to have one of  them do a ipconfig /release /renew as their lease was still good.

You can tell if they are using the new DHCP server by doing an ipconfig /all and seeing which DHCP server they are using.

Or if you want to look like a rock star.....ipconfig /all | find /i "DHCP server"

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
AA-in-CAAuthor Commented:
Migrated them to the new server and everything went flawlessly, just as you indicated.  Nobody even noticed a change.  Thanks for your help!
Scott CSenior EngineerCommented:
Anytime.
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
DHCP

From novice to tech pro — start learning today.