Using TI-10, I do a nightly backup to a NAS of my documents partition (photos, videos, etc). The NAS provides Raid-5 so I'm pretty safe against drive failures. But I still like to backup to an extra drive now and then that I take off site. Anyway, right now I simply do a file copy to a USB drive to accomplish this. But my NAS has the ability to copy specific files to it's own USB port at the touch of a button. So I was thinking I'd simply plug my USB drive into my NAS from time to time and let it copy. But in this case it would be copying a True Image image file. I like that idea because I can password protect it for taking to family's house for off site backup. BUT... is a backup of my backup this way safe enough? I've heard of people here that for whatever reason sometimes can not restore a bootable system from an image. But for just files, is an image file 99.99 percent as safe as file copy's? Or do you folks think staying with straight file copy's is a better way to backup the backup? Thanks for you input!