The project doesn't provide a POSIX filesystem directly. But, instead provides a block device (think AWS EBS).

The initial goals that are in this release:

1. An abstraction for replicated storage between machines in a cluster.

2. A block device "application" on top that an ext4 filesystem could be run on. This is like an EBS.

In the future someone might build other applications like "object storage" or filesystems and we would love to get the feedback on the API to do that. But, that isn't in the initial goals and we will be focusing on the storage and block layers for the time being.