System Recover running on Windows SBS 2008

I have SBS 2008 which is running System Recovery 2011. The full backup takes 2:30 hours to complete. My question is when the indepented backup is finished it will has the changes after the backup started?

For example the back is starting at 10:00 (and the users are working on the server) and is finishing at 12:30. If I restore this drive it will has the changes after 10:00?

Thanks in advance