Kwangho Cha Jin-Soo Kim Seungryoul Maeng snapPVFS: Snapshot-Able Parallel Virtual File System. 221-228 2008 ICPADS http://dx.doi.org/10.1109/ICPADS.2008.51 conf/icpads/2008 db/conf/icpads/icpads2008.html#ChaKM08