I have a user on a Windows 10 machine. They work remotely, and I need to make sure their work is being backed up. This work cannot reside on the central server until complete*. The duration of the project is several months. User has their desktop and 2 external drives at their disposal. Windows built in backup will suffice for the data, but I'd also like to dedicate the 2nd drive to a bootable backup. I'd rather not walk them through a system restore if possible. Anyone have suggestions for a reliable, free, and fast (pick 2 right) app for this purpose? OS, apps, data - total volume ~100GB. Thanks in advance! *uploads to server are unscheduled, will happen if and when bandwidth allows.