&gt; I would assume Backblaze is doing something along these lines.<p>They are using a regular filesystem on each drive and implement redundancy on top of regular files. It&#x27;s more like Swift [1] than Ceph. Which is something parent should consider too, if he&#x27;s going to deal with that much data.<p>[1] <a href="http:&#x2F;&#x2F;docs.openstack.org&#x2F;developer&#x2F;swift&#x2F;overview_architecture.html" rel="nofollow">http:&#x2F;&#x2F;docs.openstack.org&#x2F;developer&#x2F;swift&#x2F;overview_architect...</a>