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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Gluster, Lustre and old (1.6.x) version of MooseFS, although this document is from 2013 and a lot of information are outdated (e.g. MooseFS had no HA for Metadata Server at that time).
File system Stores file owner POSIX file permissions Creation timestamps Last access/ read timestamps Last metadata change timestamps Last archive timestamps Access control lists
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.
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 ...
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.
Distributed NFS-protocol-emulation choice to optionally confederate clients and/or servers: Lock on branch; merge branch-to-branch LGPL: Tru64, Linux: Free Visual SourceSafe (VSS) Microsoft: Serious bug fixes only Shared Folder Merge or lock Proprietary: Windows: $500 per license approximately, or single license included with each MSDN ...
Note that many of these protocols might be supported, in part or in whole, by software layers below the file manager, rather than by the file manager itself; for example, the macOS Finder doesn't implement those protocols, and the Windows Explorer doesn't implement most of them, they just make ordinary file system calls to access remote files ...
FlexGroup provides cluster-wide scalable NAS access with NFS and CIFS protocols. [20] A FlexGroup Volume is a collection of constituent FlexVol volumes distributed across nodes (up to 200 per FlexGroup) in the cluster called just "Constituents" or "member volumes", which are transparently aggregated in a single space.