A single EC2 report worker needs local scratch disk; a fleet of workers needs a shared POSIX tree; durable citizen blobs need object storage. Which pairing is correct?
Select an answer to reveal the explanation.
Short Explanation
Scratch for one machine is a block volume (EBS). A shared folder for the fleet is EFS. Forever blobs for citizens are S3. Match the storage type to how the app opens the bytes.
Full Explanation
EBS provides block storage attached to an instance (scratch/local filesystem for one worker). EFS provides a shared NFS/POSIX filesystem for many instances. S3 provides durable object storage for blobs. Mixing those roles or treating instance store as durable multi-worker citizen storage is incorrect.