Norton 360 backup taking up lots of disk space (possibly)

Norton Security | Norton Internet Security
1

All of a sudden, my disk is almost full.  I'm wondering if the Norton 360 Backup has done a huge backup.  If I can find it, is it okay for me to delete the backup file?   

2

All of a sudden, my disk is almost full.  I'm wondering if the Norton 360 Backup has done a huge backup.  If I can find it, is it okay for me to delete the backup file?