I find the work Backblaze is doing is wonderful, mostly because of how open they are with their data. Watching their numbers on certain HDD failures has really

I find the work Backblaze is doing is wonderful, mostly because of how open they are with their data. Watching their numbers on certain HDD failures has really helped steer some of my recent purchasing decisions. I'm also really interested to see more details on their custom RAID replacement. Essentially raid is dead to me, and ZFS/BTRFS, etc seem to be the only way to go forward, so I hope they gpl the code. For anyone from BackBlaze reading this, I'm curious though, have you found that backplanes are becoming a primary bottleneck? Because that seems to be the case (Sata 6gb/s hurts after using things like fusion-io or even thunderbolt.) Any insights into the future of backplanes?