Ceph and GlusterFS comparison

GlusterFS and Ceph are both a software defined storage solution, parts of the RedHat solutions portfolio.
If at first view they can seem to be identical in what they offer (storage distributed on commodity hardware, with fault-resilience), when looking more in depth, there are some difference that can make one of the two solutions better for some use cases than the other, and vice-versa.

So, let's dig into what these 2 solutions have to offer: