Run a Stable LizardFS
After some evaluation, LizardFS is my recommended distributed file system. It provides redundancy for huge amounts of storage and is fast enough to serve as docker storage backend. But still there are a lot of pitfalls that could make you loose your data. Here is a collection of my learnings.
Backup Ubuntu to Docker
Setting up a server for backing up your ubuntu home, e.g. from your notebook, is a task, done in just ten minutes. All you need is a publicly available server running docker.