I'm referring to the FS primitives. GPFS presents a POSIX FS, but it's primitive is blocks. Ceph is an object primitive (RADOS) and can present it a number of

I'm referring to the FS primitives. GPFS presents a POSIX FS, but it's primitive is blocks. Ceph is an object primitive (RADOS) and can present it a number of ways. And Gluster is based around files as primitives, which gives some interesting strengths and weaknesses.