Comparison of distributed file systems

In computing, a distributed file system (DFS) or network file system is any file system that allows access to files from multiple hosts sharing via a computer network. This makes it possible for multiple users on multiple machines to share files and storage resources.

Distributed file systems differ in their performance, mutability of content, handling of concurrent writes, handling of permanent or temporary loss of nodes or storage, and their policy of storing content.

Locally managed

Client Written in License Access API
Ceph C++ LGPL librados (C, C++, Python, Ruby), S3, Swift, FUSE
FhGFS C / C++ FRAUNHOFER FS (FhGFS) EULA,[1]

GPLv2 client

 POSIX
GlusterFS C GPLv3 libglusterfs, FUSE, NFS, SMB, Swift, libgfapi
ObjectiveFS[2] C Proprietary POSIX, FUSE
MooseFS C GPLv2 POSIX, FUSE
Quantcast File System C Apache License 2.0 C++ client, FUSE (C++ server: MetaServer and ChunkServer are both in C++)
Lustre C GPLv2 POSIX, liblustre, FUSE
OpenAFS C IBM Public License Virtual file system, Installable File System
Tahoe-LAFS Python GNU GPL 2+ and other[3] HTTP (browser or CLI), SFTP, FTP, FUSE via SSHFS, pyfilesystem
HDFS Java Apache License 2.0 Java and C client, HTTP
XtreemFS Java, C++ BSD License libxtreemfs (Java, C++), FUSE
Ori[4] C, C++ MIT libori, FUSE

Remote access

Name Run by Access API
Amazon S3 Amazon.com HTTP (REST/SOAP)
Google Cloud Storage Google HTTP (REST)
SWIFT (part of OpenStack) Rackspace, Hewlett-Packard, others HTTP (REST)
Microsoft Azure Microsoft HTTP (REST)
Cleversafe Cleversafe HTTP (REST)

Comparison

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Lustre and old (1.6.x) version of MooseFS, although this document is over 2 years old and a lot of information may be outdated (e.g. MooseFS has at the time of writing this stable 2.0 and beta 3.0 version and HA for Metadata Server - since 2.0 and it is not mentioned in this document).[5]

See also

References

  1. ↑ "FRAUNHOFER FS (FhGFS) END USER LICENSE AGREEMENT". Fraunhofer Society. 2012-02-22.
  2. ↑ "ObjectiveFS official website".
  3. ↑ "About Tahoe-LAFS".
  4. ↑ "Ori: A Secure Distributed File System".
  5. ↑ Séguin, Cyril; Depardon, Benjamin; Le Mahec, Gaël. "Analysis of Six Distributed File Systems" (PDF). HAL.


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