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Comparison of distributed file systems

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See also: Comparison of distributed parallel fault-tolerant 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

FOSS

Client Written in License Access API High availability Shards Efficient Redundancy Redundancy Granularity Initial release year Memory requirements (GB)
Alluxio (Virtual Distributed File System) Java Apache License 2.0 HDFS, FUSE, HTTP/REST, S3 hot standby No Replication[1] File[2] 2013
Ceph C++ LGPL librados (C, C++, Python, Ruby), S3, Swift, FUSE Yes Yes Pluggable erasure codes[3] Pool[4] 2010 1 per TB of storage
Coda C GPL C Yes Yes Replication Volume[5] 1987
GlusterFS C GPLv3 libglusterfs, FUSE, NFS, SMB, Swift, libgfapi Yes Yes Reed-Solomon[6] Volume[7] 2005
MooseFS C GPLv2 POSIX, FUSE master No Replication[8] File[9] 2008
Quantcast File System C Apache License 2.0 C++ client, FUSE (C++ server: MetaServer and ChunkServer are both in C++) master No Reed-Solomon[10] File[11] 2012
IPFS Go Apache 2.0 or MIT HTTP gateway, FUSE, Go client, Javascript client, command line tool Yes with IPFS Cluster Replication[12] Block[13] 2015[14]
Kertish-DFS Go GPLv3 HTTP(REST), CLI, C# Client, Go Client Yes Replication 2020
LizardFS C++ GPLv3 POSIX, FUSE, NFS-Ganesha, Ceph FSAL (via libcephfs) master No Reed-Solomon[15] File[16] 2013
Lustre C GPLv2 POSIX, NFS-Ganesha, NFS, SMB Yes Yes No redundancy[17] No redundancy[18] 2003
MinIO Go Apache Licence 2.0 AWS S3 API Yes Yes Reed-Solomon[19] Object[20] 2014
OpenAFS C IBM Public License Virtual file system, Installable File System Replication Volume[21] 2000 [22]
OpenIO[23] C AGPLv3 / LGPLv3 Native (Python, C, Java), HTTP/REST, S3, Swift, FUSE (POSIX, NFS, SMB, FTP) Yes Pluggable erasure codes[24] Object[25] 2015 0.5
RozoFS C, Python GPLv2 FUSE, SMB, NFS, key/value Yes Mojette[26] Volume[27] 2011[28]
SeaweedFS Go, Java Apache License 2.0 HTTP (REST), POSIX, FUSE, S3, HDFS replicated filer store Reed-Solomon[29] Volume[30] 2015
Tahoe-LAFS Python GNU GPL [31] HTTP (browser or CLI), SFTP, FTP, FUSE via SSHFS, pyfilesystem Reed-Solomon[32] File[33] 2007
HDFS Java Apache License 2.0 Java and C client, HTTP, FUSE[34] transparent master failover No Reed-Solomon[35] File[36] 2005
XtreemFS Java, C++ BSD License libxtreemfs (Java, C++), FUSE Replication[37] File[38] 2009
Ori[39] C, C++ MIT libori, FUSE Replication Filesystem[40] 2012

Proprietary

Client Written in License Access API
BeeGFS C / C++ FRAUNHOFER FS (FhGFS) EULA,[41]

GPLv2 client

POSIX
ObjectiveFS[42] C Proprietary POSIX, FUSE
Spectrum Scale (GPFS) C, C++ Proprietary POSIX, NFS, SMB, Swift, S3, HDFS
MapR-FS C, C++ Proprietary POSIX, NFS, FUSE, S3, HDFS, CLI
PanFS C, C++ Proprietary DirectFlow, POSIX, NFS, SMB/CIFS, HTTP, CLI
Infinit[43] C++ Proprietary (to be open sourced)[44] FUSE, Installable File System, NFS/SMB, POSIX, CLI, SDK (libinfinit)
Isilon OneFS C/C++ Proprietary POSIX, NFS, SMB/CIFS, HDFS, HTTP, FTP, SWIFT Object, CLI, Rest API
Scality C Proprietary FUSE, NFS, REST, AWS S3
Quobyte Java, C++ Proprietary POSIX, FUSE, NFS, SMB/CIFS, HDFS, AWS S3, TensorFlow Plugin, CLI, Rest API

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)
IBM Cloud Object Storage IBM (formerly Cleversafe)[45] 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 from 2013 and a lot of information are outdated (e.g. MooseFS had no HA for Metadata Server at that time).[46]

The cloud based remote distributed storage from major vendors have different APIs and different consistency models.[47]

See also

References

  1. ^ "Caching: Managing Data Replication in Alluxio".
  2. ^ "Caching: Managing Data Replication in Alluxio".
  3. ^ "Erasure Code Profiles".
  4. ^ "Pools".
  5. ^ Satyanarayanan, Mahadev; Kistler, James J.; Kumar, Puneet; Okasaki, Maria E.; Siegel, Ellen H.; Steere, David C. "Coda: A Highly Available File System for a Distributed Workstation Environment" (PDF). {{cite journal}}: Cite journal requires |journal= (help)
  6. ^ "Erasure coding implementation".
  7. ^ "Setting up GlusterFS Volumes".
  8. ^ Only available in the proprietary version 4.x "[feature] erasure-coding #8".
  9. ^ "mfsgoal(1)".
  10. ^ "The Quantcast File System" (PDF).
  11. ^ "qfs/src/cc/tools/cptoqfs_main.cc".
  12. ^ Erasure coding plan: "Reed-Solomon layer over IPFS #196"., "Erasure Coding Layer #6".
  13. ^ "CLI Commands: ipfs bitswap wantlist".
  14. ^ "Why The Internet Needs IPFS Before It's Too Late".
  15. ^ "Configuring Replication Modes".
  16. ^ "Configuring Replication Modes: Set and show the goal of a file/directory".
  17. ^ "Lustre Operations Manual: What a Lustre File System Is (and What It Isn't)". Reed-Solomon in progress: "LU-10911 FLR2: Erasure coding".
  18. ^ "Lustre Operations Manual: What a Lustre File System Is (and What It Isn't)". File-level redundancy plan: "File Level Redundancy Solution Architecture".
  19. ^ "MinIO Erasure Code Quickstart Guide".
  20. ^ "MinIO Storage Class Quickstart Guide".
  21. ^ "Replicating Volumes (Creating Read-only Volumes)".
  22. ^ https://www.openafs.org/release/openafs-1.0.html
  23. ^ "OpenIO SDS Documentation". docs.openio.io.
  24. ^ "Erasure Coding".
  25. ^ "Declare Storage Policies".
  26. ^ "About RozoFS: Mojette Transform".
  27. ^ "Setting up RozoFS: Exportd Configuration File".
  28. ^ "Initial commit".
  29. ^ "Erasure Coding for warm storage".
  30. ^ "Replication".
  31. ^ "About Tahoe-LAFS".
  32. ^ "zfec -- a fast C implementation of Reed-Solomon erasure coding".
  33. ^ "Tahoe-LAFS Architecture: File Encoding".
  34. ^ "MountableHDFS".
  35. ^ "HDFS-7285 Erasure Coding Support inside HDFS".
  36. ^ "Apache Hadoop: setrep".
  37. ^ "Under the Hood: File Replication".
  38. ^ "Quickstart: Replicate A File".
  39. ^ "Ori: A Secure Distributed File System".
  40. ^ Mashtizadeh, Ali Jose; Bittau, Andrea; Huang, Yifeng Frank; Mazières, David. "Replication, History, and Grafting in the Ori File System" (PDF). {{cite journal}}: Cite journal requires |journal= (help)
  41. ^ "FRAUNHOFER FS (FhGFS) END USER LICENSE AGREEMENT". Fraunhofer Society. 2012-02-22.
  42. ^ "ObjectiveFS official website".
  43. ^ "The Infinit Storage Platform".
  44. ^ "Infinit's Open Source Projects".
  45. ^ "IBM Plans to Acquire Cleversafe for Object Storage in Cloud". www-03.ibm.com. 2015-10-05. Retrieved 2019-05-06.
  46. ^ Séguin, Cyril; Depardon, Benjamin; Le Mahec, Gaël. "Analysis of Six Distributed File Systems" (PDF). HAL.
  47. ^ "Data Consistency Models of Public Cloud Storage Services: Amazon S3, Google Cloud Storage and Windows Azure Storage". SysTutorials. Retrieved 19 June 2017.
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