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.)
Labels: Exchange 2010
posted by Jim McBee @ 4:56 PM
5 comments
5 Comments:
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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DAG requires Enterprise because it uses clustering. it is not a limitation of database count.
sorry, to be clear - enterprise edition of windows. dag can run on standard.
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?
Hi Zeroc,
Please check in below Technet Article.
https://technet.microsoft.com/en-in/library/ee832790(v=exchg.141).aspx
As discussed in Understanding Mailbox Database Copies, a DAG member can host one copy of each mailbox database, with a maximum of 100 databases per server in the Enterprise Edition of the product (both active and passive copies count toward this limit). This means that there is a limit of 1,600 databases supported by a 16-member DAG (100 database copies per server × 16 servers per DAG ÷ 1 copy per database = 1,600 databases per DAG).
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