Is that durability rate per-... user? project? s3-wide? Important detail left out. If there are 10,000,000 projects with 10,000 objects, then a system-wide du

Is that durability rate per-... user? project? s3-wide? Important detail left out. If there are 10,000,000 projects with 10,000 objects, then a system-wide durability of 99.999999999% would expect to drop 1 object per year.