It can back up folders/files from one drive to another anytime you want on-demand (including with an optional direct shortcut on your desktop to run the backup), on a schedule, or at logon. Can create identical folder/file structures on the backup drive or compress the data as .ZIP or LZMA (.7z) files. Back up to another hard drive, flash drive, network drive, CD/DVD (if packet-writing software is installed), more. Can back up "in use" files like Outlook data. Unlike lots of backup software, it's not bloated, not sluggish, and not complicated. It is powerful, stable, and secure, but also simple - just pick the folders you want to be backed up and a few settings and you're done!