The hardware part seems to be completely solved with blackblaze designs: https://www.backblaze.com/blog/open-source-data-storage-server/ https://www.backblaze.

The hardware part seems to be completely solved with blackblaze designs: https://www.backblaze.com/blog/open-source-data-storage-server/ https://www.backblaze.com/blog/open-source-data-storage-serv... Therefore the only question left is what to use as the software for this.