SystemState backup

Hi all,

Is there any way to compact my systemstate in windows 2008 before backup it in BE2012?

If somebody knows some tips to optimizing and compact my BE 2012, it will wellcome.

My job´s run at night and I have nobody to put second tape in unit, so I need to put everything in one tape.

My data have 24 GB, I´m using DAT DDS4 20/40 GB but it could not compact sufficient.

I think my problem is in "systemState" is bigger.

Thanks.