Minio is by ex-GlusterFS developers!
That gives it some credibility. Especially ability to deal with tough challenges they'll encounter in this domain. Helps to have encountered most already. ;) I'll look at it in more detail later on. I'm also more interested in it if it has many-node, HA/SSI support. What's ETA on that feature?
We are also about to finish distributed server functionality you can track the work here https://github.com/minio/minio/tree/distributed