Except the EFS is really slow with small amounts of data and you collect/burn credits based on throughput so small amounts of data and load means you will probably be better of with a tape drive.
For a 10 GiB EFS drive you get a base throughput of 0.5 MiB/s and can burst up to 100 MiB/s for 7 minutes per day
For a 10 GiB EFS drive you get a base throughput of 0.5 MiB/s and can burst up to 100 MiB/s for 7 minutes per day