1. Ceph http://ceph.com/. Ceph http://ceph.com/.
2. Google Colossus File System: http://static.googleusercontent.com/media/research.google.com/en/university/relations/facultysummit2010/storage_architecture_and_challenges.pdf. Google Colossus File System: http://static.googleusercontent.com/media/research.google.com/en/university/relations/facultysummit2010/storage_architecture_and_challenges.pdf.
3. Erasure Coding Support inside HDFS: https://issues.apache.org/jira/browse/HDFS-7285. Erasure Coding Support inside HDFS: https://issues.apache.org/jira/browse/HDFS-7285.
4. OpenStack: Open source software for creating private and public clouds: http://www.openstack.org/. OpenStack: Open source software for creating private and public clouds: http://www.openstack.org/.
5. Quantcast File System http://quantcast.github.io/qfs/. Quantcast File System http://quantcast.github.io/qfs/.