Exchange 2007 - large EDB but no mailboxes

I'm looking at a database on my Exchange server and the .edb database file is like 118GB. How do I see what is taking up all that space?

The server the database is on is called MAIL7, so I ran the powershell query;

Get-ExchangeServer MAIL7 | get-mailbox | Sort database, name | ft name, database

it came back and listed only 5 mailboxes. None of them belonged to the Database that is 118GB in size...
garryshapeAsked:
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Will SzymkowskiSenior Solution ArchitectCommented:
This is by design.

Exchange databases never decrease in size. Once the physical size has grown it never decreases. Even if you move mailboxes to another database the source database physical size does not change.

If you have no mailboxes present on this database then you can simply unmout the database and delete the EDB file.

You will also need to remove Arbitration mailboxes as well before doing so.

Will.
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garryshapeAuthor Commented:
Ok cool thanks so much. Is that the design of 2007, 2010 and 2013?
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garryshapeAuthor Commented:
It doesn't look like I can get-mailbox -arbitration on my Exchange 2007 server, would there be any other ways of finding those.
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Will SzymkowskiSenior Solution ArchitectCommented:
Yeah that is how the databases are architect  in all versions of Exchange.

Will.
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garryshapeAuthor Commented:
Cool thanks a lot!
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ryanlochheadCommented:
This is white space you have to reclaim it.
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