Scads: Scale-independent storage for social computing applications
radlab.cs.berkeley.edu
By the guys who came up with RISC and RAID at Berkeley.
radlab.cs.berkeley.edu
The current state of the code is that it is pretty much Research-Ware (i.e. probably not stable enough to be useful outside of the lab). However, as the project matures we will definitely be open-sourcing any useful components that are developed.
For instance, checkout a project by an undergraduate in our group that implements the record serialization we will be using for the system as a scala compiler plugin. http://code.google.com/p/avro-scala-compiler-plugin/