My method is pretty close to yours: 1. Google Drive (got 2 years of 100GB space with Chromebook), was previously using Dropbox This provides me a backup local

My method is pretty close to yours: 1. Google Drive (got 2 years of 100GB space with Chromebook), was previously using Dropbox This provides me a backup locally on the computer and one off site. 2. I have an external hard drive connected to the workstation that runs an update weekly to give me a third copy of all my data. I switch out the drive with a second external drive on a weekly basis. If my computer dies, I have Google Drive and then the external hard drive x2. If the external hard drive fails then no big deal. If Google drive wipes out everything still no big deal. I backup around 70GB. *edit: The OSes I use are Windows 8.1, ChromeOS, and OSX,