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Exchange 2016 Whitespace

Rick Ranck
Rick Ranck asked
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Exchange 2016 cu3.  

In the past I was able to delete mail/mailboxes and it would create white space within my database.  

I would check my white space with the follow power shell command.  
Get-MailboxDatabase "datebasename" -Status | fl Name,AvailableNewMailboxSpace

Recently when deleted about 10GB of mailboxes the white space never showed up and my database continues to grow.

The Mailbox database limits are set to 0 for keep deleted items and mailboxes.  Also, the default retention setting are set for each mailbox.  

Does anyone know what else I can check or why my whitespace isn't freeing up?
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Commented:
Hello,

Check your retention policy and run a backup. These are the two things that can keep mail and mailboxes in your database after you deleted them.



Thanks and Regards,
Rick RanckIT Director

Author

Commented:
no retention policy is applied for each mailbox, and I have backups run each night.
IT Architect
CERTIFIED EXPERT
Distinguished Expert 2017
Commented:
If you don't have any disk space issue or anything pressing you to clear up whitespace. I advise you to leave it on Exchange to manage it. If you just want to check whitespace, in some cases you might need to dismount and mount db again. Here is a KB for you to check:

http://markgossa.blogspot.com/2015/11/exchange-2016-mailbox-database-whitespace.html

However, i would advise not to dismount the db, as that can cause outage for users.
AmitIT Architect
CERTIFIED EXPERT
Distinguished Expert 2017

Commented:
Any update?