GFS

1. Short for Global File System, GFS was first developed at the University of Minnesota and now maintained by Red Hat ( http://www.redhat.com/software/rha/gfs/ ). GFS is a File system that spans across a cluster and allows multiple computers to act as one. 
2. Short for Google File System, GFS is the file system used to run Google. Additional information about the Google File System can be found at http://labs.google.com/papers/gfs.html 

Also see: Google, File system