... is an anagram of OMG FILES!
MogileFS is a scalable software-defined storage like Ceph, Openstack Swift and GlusterFS. MogileFS is suitable for data-intensive tasks such as cloud storage and media streaming. See High Level Overview for an intro to what it is.
Read our Getting Started guide to have a try!
Have some mogile-y wisdom you want to share? Please do! Just send PR on our document repo.