There's another benchmark somewhere showing S3 can max out a 100Gbps instance. https://github.com/dvassallo/s3-benchmark https://github.com/dvassallo/s3-benchm

There's another benchmark somewhere showing S3 can max out a 100Gbps instance. https://github.com/dvassallo/s3-benchmark https://github.com/dvassallo/s3-benchmark Another potential issue is ListBucket rate limiting. If you have lots of small objects, you'll spend most of the time waiting to discover the names than transferring data