Yev from Backblaze | Somewhat. Luckily, not all the drives fail at the same time. If a drive fails in one pod we replace it, so even if there is a large fall-off after 5-6 years, it won't be like we are losing a majority of our farm in one fell swoop. We buy our gear as we need it and have lots of drives to spare, so unless all drives automatically shut off after 6 years (which they don't) we should be OK ;-)
Based on the linear extrapolation they make over the third year failure data into the future (to calculate an estimated half life of roughly 6 years), I would say they probably have not.
