Exchange 2010 Storage Limitations

AJKBOC
AJKBOC used Ask the Experts™
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Does anyone know what the limitations of Exchange server 2010 are? Basically what I am interested in, is to know the limit of the whole database of the mail server, and what the limitations for the user’s mailboxes are?

Can it handle a 20, 30 or even 50 Gigabytes mailbox?

Thanks
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Awarded 2009
Top Expert 2010

Commented:
have a look at: http://msexchangeteam.com/archive/2009/11/09/453117.aspx
Microsoft recommend that a stand alone mailbox database should not exceed 200GB that's not to say it won't go higher this is just a recommendation.

Mestha also has a good document here: http://blog.sembee.co.uk/archive/2009/07/21/105.aspx

Author

Commented:
Do you know the limitation of a single mailbox? Not the whole database.
Awarded 2009
Top Expert 2010

Commented:
I don't think there is one, I have never seen one and I have users with 20GB+ mailbox stores.
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Author

Commented:
That doesn't make sense. If Microsoft says that the mail server database should not exceed 200GB, how can there be no limit to a single mailbox?

Are you telling me that if I have an exchange server with a single user on it, that youser could have a mailbox up to 200GB?
Awarded 2009
Top Expert 2010

Commented:
Microsoft are recommending that your database shouldn't exceend 200GB (according to the link I posted earlier) but they also state in the same article that databases for resilient systems shouldn't exceed 2TB

As I said they are not hard limits, but you can also have multiple databases on the same system and if you had one user with a 200GB mailbox give them their own database!
Awarded 2009
Top Expert 2010

Commented:
It does look like the mailbox limit size is 10GB or 100,000 objects
Awarded 2009
Top Expert 2010

Commented:
Although in saying that I cannot find any hard and fast information to support this from Microsoft.
Satya PathakLead Technical Consultant

Commented:
I would suggest you please read this MS kb.
http://msexchangeteam.com/

Author

Commented:
SatyaPathak: I really don’t have the time to go through a 100 pages article full of irrelevant information, just to find the information I need. (Mailbox limitation). That is why I give 500 points for this question. For a fast answer.
Awarded 2009
Top Expert 2010

Commented:
I have found information suggesting the limit is 10GB but it's not Microsoft documentation
Awarded 2009
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Commented:

Author

Commented:
I have just spoken with Microsoft and I have to say, I’m extremely disappointed in what they told me. The official Microsoft reply is that a user’s mailbox can only get up to 10GB in Exchange 2010.

I currently have users on a Sun Java Communications Suite mail server with mailboxes up to 67GB and getting bigger. Problem free!!!

So any arguments I had for migrating to Exchange 2010 are now irrelevant. It just cannot be done.

Demazter, you get the points.
Are you kidding me... I got mailboxes bigger than 10GB on my Exchange 2003 server... now what the heck must I do?

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