HP Data Protector Command to find total retained size of backup

Hi Guys,

I am having a problem to find out the total data retained by DP.

Normally I use below command to find out total backedup data volume in a given period of time:

  omnirpt -report session_statistics -timeframe 2014/01/01 00:00 2014/02/01 12:00

So to get the total retain size I used the start date a bit earlier like:

 omnirpt -report session_statistics -timeframe 1990/01/01 00:00 2014/02/01 12:00

But the confusion is the total size it returns is very huge which I suspect it summed up all the size of backup images despite of their expiration time. And I don't want this. I just want what is the size of current valid backed up data?

Any help would be appreciated.

Regards,

TE