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Some researchers have made a functional and experimental analysis of several distributed file systems including HDFS, Ceph, Gluster, Lustre and old (1.6.x) version of MooseFS, although this document is from 2013 and a lot of information are outdated (e.g. MooseFS had no HA for Metadata Server at that time).
C++, C#, Java, Python, Smalltalk and XML: SQL superset Proprietary: Distributed, Parallel Query Engine ObjectStore: 7.2 (July 2011) C++, Java, interoperable with .NET SQL subset (also has own object query language) Proprietary: Embedded database supporting efficient, distributed management of C++ and Java objects.
File system Stores file owner POSIX file permissions Creation timestamps Last access/ read timestamps Last metadata change timestamps Last archive timestamps Access control lists
Network File System (NFS) is a distributed file system protocol originally developed by Sun Microsystems (Sun) in 1984, [1] allowing a user on a client computer to access files over a computer network much like local storage is accessed.
DDM also became the foundation for Distributed Relational Database Architecture, also known as DRDA. There are many peer-to-peer network protocols for open-source distributed file systems for cloud or closed-source clustered file systems, e. g.: 9P, AFS, Coda, CIFS/SMB, DCE/DFS, WekaFS, [7] Lustre, PanFS, [8] Google File System, Mnet, Chord ...
C++: Snapshot Tree Unknown NFS: 15.8 MB Visual SourceSafe: C: Snapshot File Numbers SMB, DCOM: Unknown Software Programming language Storage method Scope of change Revision IDs Network protocols Source code size
Single Namespace in ONTAP system is a name for collection of techniques used by Cluster to separate data from front-end network connectivity with data protocols like FC, FCoE, FC-NVMe, iSCSI, NFS and CIFS and therefore provide kind of data virtualization for online data mobility across cluster nodes.
Two or more DLCs can be configured for failover and/or load balancing. While DLC is an IP based protocol, it has been customized for data traffic, making it more efficient (and higher performance) than traditional NAS. In some environments, users have also used the DLC infrastructure to enable lower performance file sharing via NFS or CIFS.