I am not sure I understand exactly how this works and wanted to look into this before space becomes a major issue.
The exchange server is running on a virtual machine and has a limit of 256 GB on the drive that contains the database. Currently the drive is at aprox 215 GB.
I had a few users who had huge mail boxes delete old items.
I ran the cmdlet to get the database size after the items were deleted and it is still too large aprox 205 GB.
I then ran the cmdlet to see the size of the white space / available new mailbox space and it is aprox 40 GB.
My question is will exchange use this 40 GB of white space going forward? Or will I have to figure out a way to defrag the database, wich will be a challange becuase of the limited storage space or have to move the mail boxes to a different database some where else to gain the 40 GB back.