I have an Imac with so much video and music that I am almost filled up. I want to get an external hard drive to add space, but also want to back up all of my files. I have looked at Backblaze and many others. I am trying to figure out the best way to back up so much data without spending a fortune. Is online backup the way to go? Imovie files take up so much space that my 1TB internal fills up almost immediately. Trying to figure out the best option. Backblaze said 2GB per day will be backed up. That means that it will never all be backed up. Help!