The focus here is not deduplication. However, if you want to think of it in those terms, it is sharing data at the 'layer' granularity (not block, not file, but

The focus here is not deduplication. However, if you want to think of it in those terms, it is sharing data at the 'layer' granularity (not block, not file, but a bunch of files) and that's co-ordinated by Docker. The main property of this filesystem is that it is layer aware; it clones layers efficiently and optimizes common workflows in the docker ecosystem.