RAID rebuilds take too long and disk failure likelihood during a rebuild increases with rebuild time. That pointed Exablox towards object technology but with filer access.
The OneBlox filer involves customers buying an empty 8-slot Oneblox node with 4 x 1GbitE ports, at $10K list, and populating it with 3.5-inch disk drives which the Exablox OS turns into a filer resource using an underlying object storage technology. All the management is cloud-based and the system discovers new nodes and adds them into a clustering scheme, the OneBlox Ring, using peer-to-peer technology.
I see the "not a RAID thing" but I don't see the "disk failure likelihood during a rebuild does not increase with rebuild time." If your disk croaks, new copies of the objects previously on that disk need to be created from the objects elsewhere on the system. A subsequent disk croak will still propel your data into never-never land.