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Exchange 2010 Database Location and future DAG

Hello,
I just installed my first Exchange 2010 Mailbox Server and noticed something interesting about the installation routine: Setup did not ask me where it wanted me to store the Database and Log files.

Is this something new for Microsoft?  Do they no longer recommend that logs and databases be on different partitions from the OS?

Would that recommendation change if you were to implement Database Availability Groups (DAG)?  Would you want them to all be in the same place in order to enable failover?

Thanks,

Matt
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I didnt think that it had changed from previous versions I suppose I just found it odd that it did not let me set the stuff to begin with when creating the DB.  I found the documentation that states that you should still separate them:

Create a Mailbox Database[This topic's current status is: Content Complete.]
http://technet.microsoft.com/en-us/library/dd335229.aspx

Prerequisites
- For reliability, and in some cases for performance reasons, the database should be placed on disks that don't contain transaction logs.