Running NT 4.0

Backup programs: Backup Exec, Arcserve IT or NT Backup

If I am backing up a F760 filer which only has one qtree with NTFS security and the root volume is setup for NTFS security. If I map the filer C$ from a NT server and backup the filer from this mapped drive where I can see the ~snapshot directory, will snapshot be backed up by the NT backup programs I have listed above? If so how much data will the backups contain (-ex- The active file systems plus the snapshgots)?