exchange 2007 purge deleted data

have an exchange 2007 server, its near the 250gb limit. deleted data from mailboxes but it hasn't released from the store yet as I'm sure there is a setting to allow to retrieve deleted items somewhere that I am not aware of .

I need to purge this deleted data, how do I do so to free up space.
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Purge deleted mailboxes:
$mailboxes = Get-ExchangeServer | Where-Object {$_.IsMailboxServer –eq $true} | ForEach-Object { Get-MailboxStatistics –Server $_.Name | Where-Object {$_.DisconnectDate –notlike ‘’}} | select displayname, mailboxguid, database
$mailboxes | ForEach { Remove-Mailbox -Database $_.Database -StoreMailboxIdentity $_.MailboxGuid -confirm:$false }

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DhananjayTechnical ConsultantCommented:
You have perform the de-fragmentation  on the exchange server database.  Before defragmentation run online defragmentation of the database to make more free space. Event id 1221 in application show how much free space available in your exchange database.

To perform the defragmentation refer below link :
Simon Butler (Sembee)ConsultantCommented:
The 250gb limit is a soft limit, so you can increase it.
Plus you can have more than one database on the server.
I wouldn't recommend following the advice to offline defrag the database, because that requires downtime and is not risk free. Create a new database, move the content to it and drop the original.

Or just increase the database limit - you can go up to 8tb.


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jlaveryAuthor Commented:
simon how do i increase that db size.. there a reg entry somewhere?
Simon Butler (Sembee)ConsultantCommented:
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