Sunday, November 29, 2009

Exchange 2010 and maximum databases per server

Exchange Server 2010 Standard Edition allows a maximum of 5 databases per Mailbox server. Exchange Server 2010 Enterprise Edition allows a maximum of 100 databases server. That is a *maximum* number of databases including all active and passive databases. So, Standard Edition *can* be a member of a database availability group, but it can have no more than 5 total database (the active and passive databases combined.)

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6 Comments:

At 8:35 PM, Blogger 美麗 said...

Give a fool enough rope and he will hang himself.
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At 5:22 PM, Blogger Ben Serebin said...

Hello Jim,

I've seen different answers to this, but from my research and hearing this from Microsoft reps, DAG requires Exchange 2010 Enterprise on both sides. An Enterprise Server OS license has been mentioned as well. So, I'm a bit confused you stated Standard and Enterprise Exchange can be mixed. Can you confirm this or point to a MS TechNet article that states this? I can't find ANY MS articles about DAG requirements.

Thank you,
-Ben

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At 12:50 AM, Blogger 完蛋 said...

Happy New Year~~!!!............................................................

 
At 11:26 AM, Blogger Mike Crowley said...

DAG requires Enterprise because it uses clustering. it is not a limitation of database count.

 
At 11:28 AM, Blogger Mike Crowley said...

sorry, to be clear - enterprise edition of windows. dag can run on standard.

 
At 5:59 PM, Blogger Zeroc001 said...

Jim, stumbled upon this post and wanted to clarify:

According to MS Press Exchange 2010Best Practices book, it states that limit is 100 *ACTIVE* copies per DAG member is the limit. Passive DB copies are capped at 257.

See Page 29 in Best Practices book. What's the verdict?

 

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