Accountant has approx 50 gb of Quickbooks Company files and Tax Return files on a Windows 8.1 computer. We are using Carbonite online backup for an offsite backup but was wondering about setting up a scheduled backup to an external usb drive as well. I see that Windows 8.1 has "File History" and "Storage Spaces" built in to it but I don't know too much about them yet. Is Windows File History any good or is there something out there that is more reliable? For example, am I just better off with a scheduled robocopy script?