[cuno]

Sorry for the late response - I didn't see your comment until now.

Our aim is to unleash all the potential that S3/Object has to offer for file system workloads. Yes, the scale of AWS S3 helps, as does erasure coding (which enhances flexibility for better load balancing of reads).

Is it suitable for every possible workload? No, which is why we have a mode called cunoFS Fusion where we let people combine a regular high-performance filesystem for IOPS, and Object for throughput, with data automatically migrated between the two according to workload behaviour. What we find is that most data/workloads need high throughput rather than high IOPS, and this tends to be the bulk of data. So rather than paying for PBs of ultra-high IOPS storage, they only need to pay for TBs of it instead. Your particular workload might well need high IOPS, but a great many workloads do not. We do have organisations doing large scale workloads on time-series (market) data using cunoFS with S3 for performance reasons.