Difference in PST size Share on Facebook Post on reddit Tweet on Twitter Share on LinkedIn Home › Forums › Server Operating Systems › SBS 2000 / 2003 / 2008 / 2011 › Difference in PST size This topic has 2 replies, 2 voices, and was last updated 1 year, 2 months ago by pennyramsey. Viewing 1 post (of 1 total) Author Posts jantje.vlaamMember May 20, 2012 at 3:28 pm #158780 I love PST files, i trust the backup, but with an PST file i can do more. The mailbox size of the users on a SBS 2008 server range from a few 100 MB’s to multiple gigs. When i take an example and look in Outlook 2010 to the mapsize, it says it is 3221891 KB large. A mere 3GB. When i export all mailboxes to a PST file with a script using the Exchange powershell, the exported PST file for this user is 7,5GB large. If i look at the statistics with the powershell, the mailbox is 2854MB large. So what is the extra 4GB of data in the exported PST file???? Is it deleted mail still on the server? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.