How to solve error message "error Multiple database match 'Mailbox Database'. Specify a unique value"

I have one AD 2008 R2 with two Exchange servers 2010 and I created mailbox database on Exchange1 on drive E and I also want to create mailbox database on Exchange2 on drive E too but I got the error message "error Multiple database match 'Mailbox Database'. Specify a unique value".
Sida SayInfrastructure EngineerAsked:
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Muhammad MullaSystems AdministratorCommented:
It looks like you're not specifying a unique name for the Mailbox Database.

I believe that in the same Exchange organisation, mailbox database names need to be unique.

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Will SzymkowskiSenior Solution ArchitectCommented:
OfflineGeek is correct. It is also recommended that keep your database directories separate along with keeping the logs separate as well. You need unique names.

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