We help IT Professionals succeed at work.

Recomended Size of exchange database

XemOsiatis asked
Last Modified: 2010-03-06
Is there any kind of official recomened size of the exchange database?
I heard about 50Gb but nothing official.
Watch Question

This one is on us!
(Get your first solution completely free - no credit card required)
tigermattSite Reliability Engineer
Most Valuable Expert 2011

In Exchange Enterprise edition there is no limit to the size of your databases. However, since you have the ability to create multiple databases, it is a good idea to create one for your management staff, and another for general staff. This separates the mailboxes, and also allows you to set different mailbox quotas for these different "types" of users.

Gereally speaking, the speed of your backup and restore defines the top limit to the size of an information store.  The figure that is often quoted as the sweet spot beyond which you suffer extended backup/restore delays is 75GB, but it's really a question you need to answer for yourself once you've considered all the factors that are relevant to you.

If you go down the road of creating multiple databases (Enterprise version), then the current advice to to create a new storage group for each DB - this is because transaction logs are shared per storage group, not per database, and by keeping to one DB per storage group you maximise the seperation of your transaction logs, and thus simplify any DR scenario that needs you to reply transaction logs.

Hopefully I didn't offend anyone...
I think the question was about an official MS statement regarding the 50GB limit, which was posted on my first comment.

Gain unlimited access to on-demand training courses with an Experts Exchange subscription.

Get Access
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Empower Your Career
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Unlock the solution to this question.
Join our community and discover your potential

Experts Exchange is the only place where you can interact directly with leading experts in the technology field. Become a member today and access the collective knowledge of thousands of technology experts.

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.