Sun's current shared file system, QFS, suffers from a number of deficiencies. In an effort to remedy some of these deficiencies, our team is modifying shared QFS to take advantage of object based storage. Based on our past work as part of the DARPA HPC phase II effort at Sun, we made the decision to use the ANSI T10 OSD standard as our storage building block. Unfortunately, there are no existing products that support this standard. As such, we are also developing an OSD product based on Sun's COMSTAR open source SCSI target infrastructure. Both the shared QFS file system and the OSD SCSI target will be open sourced. Much of our recent work, while challenging, is more of an advanced engineering effort than a research effort. However, we are addressing a number of issues which we believe have not yet been reported in the literature. As an example, there is a relationship between the file system client's coordination semantics and the OSD's transaction semantics.