We have a DAG consisting of two nodes on an exchange 2010 SP2 RU3. Node A has 10 DB Active and Node B has 10 DBs which are copies of Node A. I am seeing an inconsistency between the total size of all mailboxes in a database and the amount of white space displayed in PS. Let take an eexamble:
DB1 has 200 Users. If I do a getmailboxstatistices and add all totalitemsize of each mailbox it ammounts to : 600,000,000,000 bytes. However the size of DB1.edb is 750,000,000,000. If I issue the commandGet-MailboxDatabase 'DB1' -Status | FL AvailableNewMailboxSpace I get 50 MB. So basically I am seeing a difference of 139 GB between the size of the edb file and the total size of all the 200 mailboxes on that DB yet it's only showing 50 MB white space. Am I missing something? What could be populating all of that 139 GB? By the way, this behavior is seen on all databases.
Thanks