<div>
In addition to what Manikandan Narayanswamy mentioned, &nbsp;Exchange 2013 allows you to create multiple mailbox databases. If you are running the standard version then you can have 5 database while the enterprise edition allows up to 50 databases. <br />
<br />
<a href="https://technet.microsoft.com/en-ca/library/jj150580(v=exchg.150).aspx" rel="ugc">https://technet.microsoft.com/en-ca/library/jj150580(v=exchg.150).aspx</a>
</div>


<div>
<div class="content wysiwyg-content">
We have a journalling account set-up to capture a copy of every email for recording/legal purposes but naturally, this causes the .edb to be double the size it needs be which would kill our backup restore times. Is it possible to hold this mailbox (and other large mailboxes possibly - i.e power users) in a separate database?<br />
<br />
Is it possible to have multiple mailbox databases in Exchange 2013? If so, how?
</div>
</div>


We have a journalling account set-up to capture a copy of every email for recording/legal purposes but naturally, this causes the .edb to be double the size it needs be which would kill our backup restore times. Is it possible to hold this mailbox (and other large mailboxes possibly - i.e power users) in a separate database?

Is it possible to have multiple mailbox databases in Exchange 2013? If so, how?

In addition to what Manikandan Narayanswamy mentioned,  Exchange 2013 allows you to create multiple mailbox databases. If you are running the standard version then you can have 5 database while the enterprise edition allows up to 50 databases. 

https://technet.microsoft.com/en-ca/library/jj150580(v=exchg.150).aspx

Multiple mailbox databases - Exchange 2013

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.

Email Servers

The Microsoft Server topic includes all of the legacy versions of the operating system, including the Windows NT 3.1, NT 3.5, NT 4.0 and Windows 2000 and Windows Home Server versions.