Andy at Backblaze here. We've looked at this and the one "issue" is the consistency of the environments from the community data. In our DCs, the drives are kept a decent temperature, hardly ever moved, and our DC tech sing to them every night (OK, just kidding about that last one). Community drives will comes from all types of environments, from pristine to dust bunny hell. Still, it might be interesting to compare the two data sets if a community cohort could be collected.