[cmurf]

What's the storage backend being used on Windows? With even an 800MiB base, let alone 10GiB, I'm curious what happens when creating 100 containers from that base? On Linux, whether the backend is device mapper (thin), overlayfs, or Btrfs, the snapshots are fast and the cost is only the change from the base.

[friism]

Docker running on Windows comes with the same layering and CoW semantics as on Windows. If you're curious about the details, John Starks' session at DockerCon is really great: https://www.youtube.com/watch?v=85nCF5S8Qok