I haven’t tried this yet, but I am seriously considering it. I already use AWS for other things, so it might be time to see if I can archive old files that I rarely use but don’t want to delete. I don’t feel like getting more hardware, and I don’t have much confidence in Apple’s iCloud. So this might be the solution: How to Use Amazon Glacier as a Dirt Cheap Backup Solution.
And if I go that route, I will need tools. This article should give me the information I need for that: The Best Tools for Uploading Files to Amazon Glacier – Digital Inspiration.