I am looking for a backup solution for a mix of laptops and desktops. All of these machines are Win 7 machines. I am thinking of a NAS, or local backups using the Windows backup tool. I also have the ability to backup to a network drive, but i do not want to hog our network resources doing a backup. There are approx. 20 different machines that need to be backed up on a routine basis. Does anyone have any recommendations for software or hardware solutions that do not cost a ton? We have Symantec backup exec, but due to other backup jobs that are running, it is not a viable solution. Any recommendations would be highly appreciated.