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2010 vs 2013

i have 02 quires

1. can we create DAG in both standard and enterprise edition of exchange 2010 and 2013?
2. can we create 05 in standard and 100 databases in enterprise in exchange 2010 and 2013?
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Exchange_Don
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Exchange_Don
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VB ITSSpecialist ConsultantCommented:
1. can we create DAG in both standard and enterprise edition of exchange 2010 and 2013?
Yes, you can use DAG in both Exchange 2010 and Exchange 2013.

2. can we create 05 in standard and 100 databases in enterprise in exchange 2010 and 2013?
Exchange 2010 and 2013 Standard both have a limit of 5 databases.

Exchange 2010 Enterprise has a limit of 100 databases whereas Exchange 2013 Enterprise has a limit of 50 databases.
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VB ITSSpecialist ConsultantCommented:
Note that if you plan on using DAGs, you need to be running the Enterprise version of Windows Server if Exchange is installed on either Windows Server 2008 or 2008 R2 as Windows Server 2008/2008 R2 Standard does not come with the Windows Failover Clustering component that is required for DAGs.

You can use the Standard version of Windows starting from Server 2012 though. Confusing, I know.
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Exchange_DonAuthor Commented:
are you sure about this Exchange 2013 Enterprise has a limit of 50 databases? isn't it 100?
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VB ITSSpecialist ConsultantCommented:
My apologies, it was 50 at RTM but looks like it was increased to 100 in CU2. I distinctly remember the limit of 50 as it surprised me when I first read the release notes for Exchange 2013. At least it's been raised to 100 now like it should have been. First few lines here confirm this: http://technet.microsoft.com/en-us/library/bb232170%28v=exchg.150%29.aspx

Note that this limit refers to the maximum number of databases that can be mounted at any given time. You can create as many as you want. Recovery databases are also excluded from this limit.
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