Symantec Backup Exec 12.5 with SP 4 Test Run byte size completely different from actual backup

Posted on 2011-10-14
Last Modified: 2013-12-01
Have Symantec Backup Exec 12.5 SP4.  Test run's on SBS 2008 server show 124GB of data to back up according to data selected and tape drive can handle up to 150GB.  When ACTUAL backups occur, we are getting up to 280GB trying to get backed up!  It absolutely makes no sense.  All data manually checked is around 124GB, so the test run seems fine, but the actual backups are really, really off.  Any suggestions?  I cannot find any solutions to this.

Question by:AFIN

    Author Comment

    Follow up:  Discovered that backup Exec 12.5 for some reason does not enumerate Exchange 2007 mailbox size when doing test runs.  Is this accurate???  Now the actual data size makes sense because it appears all that 150GB or so of email data was missing from the test runs.  Very frustrating.

    LVL 42

    Accepted Solution

    That sounds about correct.  Backup 12.5 uses GRT technology which goes into the information store without using mapi client to go into each individual mailbox and pull emails directly from it.

    Author Closing Comment

    Thanks, i figured somthing was up with it.  That was helpful.  Also kind of deceiving on Symantec's part, since you relay on the test runs to give some accurate info to base what kind of storage need is apparent.

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