Should I use multiple Exchange 2013 Databases?

We are going to be migrating from Exchange 2007 to Exchange 2013.  Currently, we have 250 maiboxes in one database.  Would it be recommended to stick with one database again or split out into multiple databases?  At one point do I want to use multiple databases and why?

Also, is it still separate volume for database and separate for logs?
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ohmErnieAsked:
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Simon Butler (Sembee)ConsultantCommented:
Easy bit first - yes, separate spindles are preferable for logs and databases unless a very small server (less than 10 users).

As for databases, the number of users doesn't really matter. It Is the size of the database.
Most advice you will see is try to have at most 250gb of data in a single database, then move on to another one.

However there can be other reasons for having multiple databases, such as different settings on different databases, or being able to prioritise the restore of one database from backup, or just having smaller databases meaning less to restore! There are no hard and fast rules.

Simon.
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