Hamsterdan writes: Backblaze, which open sourced their Storage Pod a few years ago, is now giving drive failure rates. They currently have over 27,000 consumer grade drives spinning in Backblaze storage pods.
Almost 13,000 each are Seagate and Hitachi drives, almost 3000 Western Digital drives and a too small for statistical reporting smattering of Toshiba and Samsung drives.
One cool thing: Backblaze buys drives the way you and I do: they get the cheapest drives that will work. Their workload is almost hundred percent write. Because they spread the incoming writes over several drives their workload isn't very performance intensive either.
Yev from Backblaze here -> since we've always used consumer level gear and actually designed our storage pods around them, we factored higher failure rates and inconsistencies in to the equations. We know that drives fail (this is why we started an online backup company), and we designed around it so that even if we lose drives or entire arrays, it isn't fatal to the storage. You can read the philosophy here (http://blog.backblaze.com/2011/07/20/petabytes-on-a-budget-v2-0revealing-more-secrets/).
Yev w/ Backblaze here -> Even though we did not prevent people from purchasing drives (we rarely bought ALL of the drives within any given location, and if so, it was before a shipment was delivered), a lot of our users were able to backup to us for $5/month instead of purchasing a higher price drive do backup to locally, then when prices started going down they were able to purchase the local drive as well.