The following lists identify, characterise and link to more thorough information on computer file systems. This article is about the machine. ... For library and office filing systems, see Library classification. ...

Many older operating systems support only their one "native" file system, which does not bear any name apart from the name of the operating system itself. Examples of such include the CP/M file system and the Apple DOS file system. These unnamed file systems don't appear in the following list. An operating system (OS) is the software that manages the sharing of the resources of a computer and provides programmers with an interface used to access those resources. ... CP/M is an operating system originally created for Intel 8080/85 based microcomputers by Gary Kildall of Digital Research, Inc. ... Beneath Apple DOS was a popular guide to Apple DOS. Apple DOS refers to operating systems for the Apple II series of microcomputers from 1978 through early 1983. ...

Disk file systems

Disk file systems are usually stream-oriented. Files in a stream-oriented file system are sequences of bytes, often featuring fully random-access read, write, and modify operations.

• ADFS – Acorn's Advanced Disc filing system, successor to DFS.
• AFS (Not to be confused with Andrew File System, below) – Acer Fast Filesystem, used on SCO OpenServer
• AthFS - AtheOS File System, a 64-bit journaled filesystem now used by Syllable. Also called AFS
• BFS – the Be File System used on BeOS, occasionally misnamed as BeFS
• Btrfs - A filesystem based on B-Trees, created by Oracle Corporation.
• CBMFS – The filesystem used on most Commodore 64-compatible floppy drives including the venerable 1541.
• CMDFS – A filesystem extension added to CBMFS by Creative Micro Designs, for use in their 3.5 inch floppy drives, RAM disks, and hard drive controllers.
• DTFS – Desktop File System, featuring file compression, used by SCO OpenServer
• EAFS – Extended Acer Fast Filesystem, used on SCO OpenServer
• Extent File System (EFS) – an older block filing system under IRIX.
• ext – Extended file system, designed for Linux systems
• ext2 – Second extended file system, designed for Linux systems.
• ext3 – A journalled form of ext2.
• ext3cow – A versioning file system form of ext3.
• ext4 – A new version of ext3, with support for extents.
• FAT – File Allocation Table, used on DOS and Microsoft Windows, 12-, 16- and 32-bit table depths.
  • VFAT – Version of Microsoft Windows FAT system with extension to allow long (up to 255 character) filenames instead of only the 8.3 filenames allowed in the original FAT.
  • FATX – A modified version of Microsoft Windows FAT system that is used on the original Xbox console.
• FFS (Amiga) – Fast File System, used on Amiga systems. This FS has evolved over time. Now counts FFS1, FFS Intl, FFS DCache, FFS2.
• FFS – Fast File System, used on *BSD systems
• Fossil – Plan 9 from Bell Labs snapshot archival file system.
• Files-11 – OpenVMS file system; also used on some PDP-11 systems; supports record-orientated files
• HFS – Hierarchical File System, used on older Mac OS systems
• HFS Plus – Updated version of HFS, used on newer Mac OS systems. Recent versions allow journaling.
• HPFS – High Performance File System, used on OS/2
• HTFS – High Throughput Filesystem, used on SCO OpenServer
• ISO 9660 – Used on CD-ROM and DVD-ROM discs (Rock Ridge and Joliet are extensions to this)
• JFS – IBM Journaling file system, provided in Linux, OS/2, and AIX. Supports extents.
• LFS – 4.4BSD implementation of a log-structured file system
• MFS – Macintosh File System, used on early Mac OS systems
• Minix file system – Used on Minix systems
• NILFS – Linux implementation of a log-structured file system
• NTFS – (New Technology File System) Used on Windows NT, Windows 2000, Windows XP, Windows Server 2003 and Windows Vista systems
• NetWare File System - The original NetWare 2.x - 5.x file system, used optionally by later versions.
• NSS – Novell Storage Services. This is a new 64-bit journaling file system using a balanced tree algorithm. Used in NetWare versions 5.0-up and recently ported to Linux.
• OFS – Old File System, on Amiga. Nice for floppies, but fairly useless on hard drives.
• PFS – and PFS2, PFS3, etc. Technically interesting file system available for the Amiga, performs very well under a lot of circumstances. Very simple and elegant.
• Qnx4fs - File system that used in QNX.
• ReiserFS – File system that uses journaling
• Reiser4 – File system that uses journaling, newest version of ReiserFS
• S51K – AT&T UNIX System V 1KB Filesystem, used by SCO OpenServer
• SFS – Smart File System, journaling file system available for the Amiga platforms.
• SkyFS - Developed for SkyOS to replace BFS as the operating system's main file system. It is based off BFS, but contains many new features.
• UDF – Packet based file system for WORM/RW media such as CD-RW and DVD.
• UFS – Unix File System, used on older BSD systems
• UFS2 – Unix File System, used on newer BSD systems
• VxFS Veritas file system, first commercial journaling file system^{[citation needed]}; HP-UX, Solaris, Linux, AIX
• VLIR (Variable Length Indexed Record) – a filesystem extension added by Berkeley Softworks to CBMFS, allowing full random access read and write operations, for computers running GEOS.
• WinFS - Windows Future Storage, currently still in beta and in use internally at Microsoft, it is planned as the successor to NTFS. It is uncertain whether it will be available as a service pack for Windows Vista or if it will be shipped with a later version of Windows.
• WAFL – Write Anywhere File Layout. High performance, log-structured like file system. WAFL heavily uses RAID 4, and NVRAM for transaction log replays. Used on Network Appliance systems
• XFS – Used on SGI IRIX and Linux systems
• ZFS – Used on Solaris 10 and OpenSolaris, being ported to FreeBSD 7.0 and to FUSE (not to be confused with zFS from IBM)
• STL (standard language file system) - a file system developed by IBM [1].

The Advanced Disc Filing System (ADFS) is a computing file system particular to the Acorn computer range and RISC OS based successors. ... Acorn Computers Ltd. ... The Disc Filing System (DFS) is a computer file system developed by Acorn Computers Ltd, and introduced in 1982 for the Acorn BBC Microcomputer. ... SCO OpenServer, previously SCO UNIX and SCO ODT, is a Unix-like computer operating system developed by Santa Cruz Operation (SCO) and now maintained by the SCO Group. ... The AtheOS file system (AFS) was originally used in the AtheOS operating system, and is now a part of the Syllable operating system. ... AtheOS was a free software operating system for x86-based computers. ... A journaling file system is a type of file system that keeps journalled metadata to avoid filesystem errors and corruption. ... Syllable is an open source hobby operating system for Intel x86 Pentium and compatible processors. ... The Be File System (BFS, occasionally misnamed as BeFS) is the native file system for the BeOS operating system. ... BeOS is an operating system for personal computers which began development by Be Inc. ... Announced by Oracle in 2007[1], Btrfs was created as a replacement for the aging ext3 Linux filesystem. ... B-trees are tree data structures that are most commonly found in databases and filesystem implementations. ... Oracle Corporation (NASDAQ: ORCL) is one of the major companies developing database management systems (DBMS), tools for database development, middle-tier software, enterprise resource planning software (ERP), customer relationship management software (CRM) and supply chain management (SCM) software. ... C-64 redirects here. ... Front view of the most common version of the Commodore 1541 disk drive, with open disk slot. ... Creative Micro Designs (CMD) is a computer technologies company which today sells PCs and equipment, but which started out in 1987 selling self-designed hardware for the Commodore 64 and C128 8-bit computers. ... SCO OpenServer, previously SCO UNIX and SCO ODT, is a Unix-like computer operating system developed by Santa Cruz Operation (SCO) and now maintained by the SCO Group. ... SCO OpenServer, previously SCO UNIX and SCO ODT, is a Unix-like computer operating system developed by Santa Cruz Operation (SCO) and now maintained by the SCO Group. ... There is also a (different) filing system called EFS under Microsoft Windows 2000. ... IRIX is a computer operating system developed by Silicon Graphics, Inc. ... The extended file system or ext was the first filesystem created specifically for the Linux operating system. ... This article is about operating systems that use the Linux kernel. ... The ext2 or second extended file system is a file system for the Linux kernel. ... This article is about operating systems that use the Linux kernel. ... The ext3 or third extended filesystem is a journalled file system that is commonly used by the Linux operating system. ... A journaling file system is a type of file system that keeps journalled metadata to avoid filesystem errors and corruption. ... Ext3cow or third extended filesystem with copy-on-write is an open source, versioning file system based on the ext3 file system. ... A versioning file system is a file system which provides for the concurrent existence of several versions of a file. ... The ext4, or fourth extended filesystem is a journalled file system that was revealed on October 10, 2006 by Andrew Morton as a compatible improvement to the ext3, featuring support for volumes up to 1024 petabytes and added extent (allocation of an area for a file to use) support. ... An extent is a contiguous area of storage in a computer file system, reserved for a file. ... File Allocation Table (FAT) is a partially patented file system developed by Microsoft for MS-DOS and was the primary file system for consumer versions of Microsoft Windows up to and including Windows Me. ... This article is about the family of closely related operating systems for the IBM PC compatible platform. ... “Windows” redirects here. ... “Windows” redirects here. ... A 8. ... FATX or XFAT is a slightly modified version of the File Allocation Table filesystem, and is designed for Microsofts Xbox video game console hard disk drive, used in an effort to reduce piracy. ... “Windows” redirects here. ... The Xbox is a sixth generation era video game console produced by Microsoft Corporation. ... The Amiga Fast File System (FFS) is an advanced file system used on the Amiga personal computer. ... This article is about the family of home computers. ... In computing, the Berkeley Fast File System (or FFS) is a file system used mostly by BSD-derivative Unix variants. ... BSD redirects here; for other uses see BSD (disambiguation). ... Fossil is the default file system in Plan 9 from Bell Labs. ... Plan 9 from Bell Labs is a distributed operating system, primarily used as a research vehicle. ... Files-11, also known as on-disk structure, is the filesystem used by Hewlett-Packards OpenVMS operating system, and also (in a simpler form) by the older RSX-11. ... OpenVMS[1] (Open Virtual Memory System or just VMS) is the name of a high-end computer server operating system that runs on the VAX[2] and Alpha[3] family of computers developed by Digital Equipment Corporation of Maynard, Massachusetts (DIGITAL was then purchased by Compaq, and is now owned... The PDP-11 was a 16-bit minicomputer sold by Digital Equipment Corp. ... Hierarchical File System (HFS), is a file system developed by Apple Computer for use on computers running Mac OS. Originally designed for use on floppy and hard disks, it can also be found on read-only media such as CD-ROMs. ... This article relates to both the original Classic Mac OS as well as Mac OS X, Apples more recent operating system. ... HFS Plus or HFS+ is a file system developed by Apple Computer to replace their Hierarchical File System (HFS) as the primary file system used on Macintosh computers. ... This article relates to both the original Classic Mac OS as well as Mac OS X, Apples more recent operating system. ... HPFS or High Performance File System is a file system created specifically for the OS/2 operating system to improve upon the limitations of the FAT file system. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... SCO OpenServer, previously SCO UNIX and SCO ODT, is a Unix-like computer operating system developed by Santa Cruz Operation (SCO) and now maintained by the SCO Group. ... ISO 9660, a standard published by the International Organization for Standardization, defines a file system for CD-ROM media. ... The CD-ROM (an abbreviation for Compact Disc Read-Only Memory (ROM)) is a non-volatile optical data storage medium using the same physical format as audio compact discs, readable by a computer with a CD-ROM drive. ... DVD (also known as Digital Versatile Disc or Digital Video Disc) is a popular optical disc storage media format. ... The Rock Ridge Interchange Protocol (RRIP, IEEE P1282) is an extension to the ISO 9660 volume format which adds POSIX file system semantics. ... Joliet is the name of an extension to the ISO 9660 file system. ... JFS is a journaling filesystem created by IBM. It is available under an open source license. ... For other uses, see IBM (disambiguation) and Big Blue. ... A journaling (or journalling) file system is a file system that logs changes to a journal (usually a circular log in a specially-allocated area) before actually writing them to the main file system. ... This article is about operating systems that use the Linux kernel. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... AIX (Advanced Interactive eXecutive) is a proprietary operating system developed by IBM based on UNIX System V. Before the product was ever marketed, the acronym AIX originally stood for Advanced IBM UNIX. AIX has pioneered numerous network operating system enhancements, introducing new innovations later adopted by Unix-like operating systems... An extent is a contiguous area of storage in a computer file system, reserved for a file. ... The Log-Structured File System (or LFS) is an implementation of a log-structured file system, originally developed for BSD. It was removed from FreeBSD and OpenBSD. In NetBSD, its still present, but it appears to be no longer completely functional as of NetBSD 2. ... The Log-Structured File System (or LFS) is an implementation of a log-structured file system, originally developed for BSD. It was removed from FreeBSD and OpenBSD. In NetBSD, its still present, but it appears to be no longer completely functional as of NetBSD 2. ... Macintosh File System (MFS) is a volume format (or disk file system) created by Apple Computer for storing files on 400K floppy disks. ... This article relates to both the original Classic Mac OS as well as Mac OS X, Apples more recent operating system. ... The Minix file system is the native file system of the Minix operating system. ... MINIX is a free/open source, Unix-like operating system (OS) based on a microkernel architecture. ... NILFS is a log-structured file system implementation for Linux. ... The Log-Structured File System (or LFS) is an implementation of a log-structured file system, originally developed for BSD. It was removed from FreeBSD and OpenBSD. In NetBSD, its still present, but it appears to be no longer completely functional as of NetBSD 2. ... NTFS is the standard file system of Windows NT, including its later versions Windows 2000, Windows XP, Windows Server 2003, Windows Server 2008, and Windows Vista. ... Windows NT (New Technology) is a family of operating systems produced by Microsoft, the first version of which was released in July 1993. ... Windows 2000 (also referred to as Win2K) is a preemptive, interruptible, graphical and business-oriented operating system that was designed to work with either uniprocessor or symmetric multi-processor 32-bit Intel x86 computers. ... Windows XP is a line of operating systems developed by Microsoft for use on general-purpose computer systems, including home and business desktops, notebook computers, and media centers. ... Windows Server 2003 is a server operating system produced by Microsoft. ... Windows Vista is a line of graphical operating systems used on personal computers, including home and business desktops, notebook computers, Tablet PCs, and media centers. ... NetWare File System (NWFS), is a file system, based on a heavily-modified version of FAT. It was used in the Novell NetWare operating system. ... NetWare is a network operating system developed by Novell, Inc. ... Novell Storage Services (NSS) is a file system used by Novells NetWare Operating system and recently ported to Linux. ... A journaling (or journalling) file system is a file system that logs changes to a journal (usually a circular log in a specially-allocated area) before actually writing them to the main file system. ... NetWare is a network operating system developed by Novell, Inc. ... This article is about operating systems that use the Linux kernel. ... On the Amiga the Old File System was the filesystem for Amiga OS before the Amiga Fast File System. ... The Professional File System is a filesystem originally developed commercially for the Amiga. ... This article is about the family of home computers. ... QNX4FS is the filesystem used by the QNX4 and QNX6 operating systems. ... QNX (pronounced either Q-N-X or Q-nix) is a commercial POSIX-compliant Unix-like real-time operating system, aimed primarily at the embedded systems market. ... ReiserFS is a general-purpose, journaled computer file system designed and implemented by a team at Namesys led by Hans Reiser who is referred to as the projects Benevolent Dictator for Life. ... A journaling (or journalling) file system is a file system that logs changes to a journal (usually a circular log in a specially-allocated area) before actually writing them to the main file system. ... Reiser4 is a computer file system, a new from scratch successor to the ReiserFS file system, developed by Namesys and sponsored by DARPA as well as Linspire. ... A journaling (or journalling) file system is a file system that logs changes to a journal (usually a circular log in a specially-allocated area) before actually writing them to the main file system. ... SCO OpenServer, previously SCO UNIX and SCO ODT, is a Unix-like computer operating system developed by Santa Cruz Operation (SCO) and now maintained by the SCO Group. ... The Smart File System (SFS) is a journalling filesystem used on Amiga computers. ... A journaling (or journalling) file system is a file system that logs changes to a journal (usually a circular log in a specially-allocated area) before actually writing them to the main file system. ... SkyOS is a proprietary operating system currently in production. ... The Universal Disk Format (UDF) is a format specification of a file system for storing files on optical media. ... The UNIX file system (UFS) is a file system used by many Unix and Unix-like operating systems. ... BSD redirects here; for other uses see BSD (disambiguation). ... UNIX file system (UFS) is a file system used by many unix operating systems. ... BSD redirects here; for other uses see BSD (disambiguation). ... The VERITAS File System, or VxFS, is an extent-based file system that was the first commercial journaling file system, and was developed by VERITAS Software. ... VERITAS Software Corp. ... A journaling (or journalling) file system is a file system that logs changes to a journal (usually a circular log in a specially-allocated area) before actually writing them to the main file system. ... HP-UX (Hewlett Packard UniX) is Hewlett-Packards proprietary implementation of the Unix operating system, based on System V (initially System III). ... Solaris is a computer operating system developed by Sun Microsystems. ... This article is about operating systems that use the Linux kernel. ... AIX (Advanced Interactive eXecutive) is a proprietary operating system developed by IBM based on UNIX System V. Before the product was ever marketed, the acronym AIX originally stood for Advanced IBM UNIX. AIX has pioneered numerous network operating system enhancements, introducing new innovations later adopted by Unix-like operating systems... GEOS (Graphic Environment Operating System) was an operating system from Berkeley Softworks (later GeoWorks). ... It has been suggested that Microsoft Rave be merged into this article or section. ... The Write Anywhere File Layout, or WAFL, is a file system designed by Network Appliance for use in their Network File System server appliances. ... The Log-Structured File System (or LFS) is an implementation of a log-structured file system, originally developed for BSD. It was removed from FreeBSD and OpenBSD. In NetBSD, its still present, but it appears to be no longer completely functional as of NetBSD 2. ... Network Appliance, Inc. ... XFS is a high-performance journaling file system created by Silicon Graphics for their IRIX operating system. ... Silicon Graphics, Inc. ... IRIX is a computer operating system developed by Silicon Graphics, Inc. ... This article is about operating systems that use the Linux kernel. ... In computing, ZFS is a file system originally created by Sun Microsystems for the Solaris Operating System. ... Solaris is a computer operating system developed by Sun Microsystems. ... OpenSolaris is an open source project created by Sun Microsystems to build a developer community around Solaris Operating System technology. ... FreeBSD is a Unix-like free operating system descended from AT&T UNIX via the Berkeley Software Distribution (BSD) branch through the 386BSD and 4. ... Filesystem in Userspace (FUSE) is a Free (GPL and LGPLed) Unix kernel module that allows non-privileged users to create their own file systems without the need to write any kernel code. ... For other uses, see IBM (disambiguation) and Big Blue. ...

Solid state media file systems

Solid state media like Flash memory are similar to disks in their interfaces, but have different problems. While eliminating seek times, they require special handling such as Wear leveling and Error detection and correction algorithms. A USB flash drive. ... Wear levelling (also written -leveling) is a technique for prolonging the service life of some kinds of erasable computer storage media, such as flash memory. ... It has been suggested that this article or section be merged with SEC-DED. (Discuss) In mathematics, computer science, telecommunication, and information theory, error detection and correction has great practical importance in maintaining data (information) integrity across noisy channels and less-than-reliable storage media. ...

• FAT – Originally a disk file system, it is now commonly used on memory cards because of its simplicity and ubiquity.
• JFFS – Original log structured Linux file system for NOR flash media
• JFFS2 – Successor of JFFS, for NAND and NOR flash
• LogFS – Intended to replace JFFS2, better scalability. In early development.
• YAFFS – A Log structured file system designed for NAND flash, but also used with NOR flash.

File Allocation Table (FAT) is a partially patented file system developed by Microsoft for MS-DOS and was the primary file system for consumer versions of Microsoft Windows up to and including Windows Me. ... Memory cards are solid-state electronic flash memory data storage devices used with digital cameras, handheld and laptop computers, phones, music players, video game consoles and other electronics. ... The Journaled Flash File System (or JFFS) is a log-structured file system for use on NOR flash memory devices. ... The Journalling Flash File System version 2 or JFFS2 is a log-structured file system for use in flash memory devices. ... A USB Flash Memory Device Flash memory is a form of EEPROM (Electrically-Erasable Programmable Read-Only Memory) that allows multiple memory locations to be erased or written in one programming operation. ... A USB Flash Memory Device Flash memory is a form of EEPROM (Electrically-Erasable Programmable Read-Only Memory) that allows multiple memory locations to be erased or written in one programming operation. ... This article needs to be cleaned up to conform to a higher standard of quality. ...

Record-oriented file systems

In Record-oriented file systems files are stored as a collection of records. They are associated with older mainframe and minicomputer operating systems. Programs read and write whole records, rather than bytes or arbitrary byte ranges, and can seek to a record boundary but not within records. This article needs to be wikified. ... This article is about the data structure. ... For other uses, see Mainframe. ... Minicomputer (colloquially, mini) is a largely obsolete term for a class of multi-user computers which make up the middle range of the computing spectrum, in between the largest multi-user systems (traditionally, mainframe computers) and the smallest single-user systems (microcomputers or personal computers). ...

• Files-11 – early versions were record-oriented; support for "streams" was added later
• Virtual storage access method (VSAM) – Used on System/370 and MVS
• Encina SFS - A record-oriented file system from IBM [2]
• SFS (record sequential delimited) - A record-oriented file system from IBM [3]

Files-11, also known as on-disk structure, is the filesystem used by Hewlett-Packards OpenVMS operating system, and also (in a simpler form) by the older RSX-11. ... Virtual Storage Access Method (VSAM) is an IBM disk file storage scheme first used in the OS/VS2 operating system and later used throughout the MVS architecture. ... IBM logo The IBM System/370 (often: S/370) was a model range of IBM mainframes announced on June 30, 1970 as the successors to the System/360 family. ... MVS (Multiple Virtual Storage) was the most commonly used operating system on the System/370 and System/390 IBM mainframe computers. ...

Shared disk file systems

Shared disk file systems (also called shared storage file systems, SAN file system or even cluster file systems) are primarily used in a storage area network where all nodes directly access the block storage where the file system is located. This makes it possible for nodes to fail without affecting access to the file system from the other nodes. Shared disk file systems are normally used in a high-availability cluster together with storage on hardware RAID. Shared disk file systems normally do not scale over 64 or 128 nodes. The SAN File System, also known as SFS, is distributed file system software created by DataPlow that enables high-speed, cluster file sharing among multiple, storage area network (SAN)-attached computers. ... In computing, a storage area network (SAN) is an architecture to attach remote computer storage devices such as disk array controllers, tape libraries and CD arrays to servers in such a way that to the operating system the devices appear as locally attached devices. ... Block storage refers to the direct access to random disk blocks in computer disk storage. ... High-availability clusters (also known as HA Clusters) are computer clusters that are implemented primarily for the purpose of improving the availability of services which the cluster provides. ... For other uses, see Raid. ...

Shared disk file systems may be symmetric where metadata is distributed among the nodes or asymmetric with centralized metadata servers. Symmetry is a characteristic of geometrical shapes, equations and other objects; we say that such an object is symmetric with respect to a given operation if this operation, when applied to the object, does not appear to change it. ... Metadata is data about data. ... Symmetry is a characteristic of geometrical shapes, equations and other objects; we say that such an object is symmetric with respect to a given operation if this operation, when applied to the object, does not appear to change it. ... Metadata is data about data. ...

The current world record in file system performance (January 2006) is held by GPFS from IBM with 134 GByte/s sustained read/write to a single file on the ASC Purple at Lawrence Livermore National Laboratory, the current third fastest supercomputer. General Parallel File System (GPFS) is an IBM proprietary journaled cluster file system available for AIX and Linux since 2001. ... For other uses, see IBM (disambiguation) and Big Blue. ... ASC Purple is a supercomputer that is installed at the Lawrence Livermore National Laboratory in Livermore, CA. The computer is a collaboration between IBM Corporation and Lawrence Livermore Lab. ... Aerial view of the lab and surrounding area, facing NW. The Lawrence Livermore National Laboratory (LLNL) in Livermore, California is a United States Department of Energy (DOE) national laboratory, managed and operated by Lawrence Livermore National Security, LLC (LLNS), a limited liability consortium comprised of Bechtel National, the University of... For other uses, see Supercomputer (disambiguation). ...

• CXFS (Clustered XFS) from Silicon Graphics (SGI). Available for AIX, IRIX, Linux, Solaris and Windows. Asymmetric.
• EMC Celerra HighRoad from EMC. Available for AIX, HP-UX, IRIX, Solaris and Windows. Asymmetric.
• Files-11 on VMSclusters, released by DEC in 1983, now from HP. Symmetric.
• Global File System (GFS) from Red Hat. Available for Linux under GPL. Symmetric (GDLM) or Asymmetric (GULM).
• General Parallel File System (GPFS) from IBM. Support replication between attached block storage. Available for AIX and Linux. Symmetric.
• HP Cluster File System (CFS) (TruCluster) from HP. Available for HP-UX and Tru64 UNIX.
• Melio FS from Sanbolic. Symmetric.
• Nasan File System from DataPlow. Available for Linux and Solaris. Asymmetric.
• Oracle Cluster File System (OCFS and now OCFS2) from Oracle Corporation. Available for Linux under GPL. Symmetric.
• PolyServe file system (PSFS) from PolyServe [4] is used in their PolyServe Matrix Server [5] which focus on exporting to clients over CIFS or NFS as well as Microsoft SQL Server and Oracle 9i RAC and 10g. Available for Linux and Windows. Symmetric.
• SAN file system from DataPlow. Available for IRIX, Linux, Solaris and Windows. Symmetric.
• StorNext File System from Quantum. Asymmetric. Available for AIX, HP-UX, IRIX, Linux, Mac OS, Solaris and Windows. Interoperable with Xsan.
• QFS from Sun Microsystems. Available for Linux and Solaris. Asymmetric.
• Veritas Storage Foundation Cluster File System (CFS) from Symantec. Available for AIX, HP-UX, Linux and Solaris. Asymmetric.
• Xsan from Apple Computer. Available for Mac OS. Asymmetric. Interoperable with ADIC StorNext File System.
• VMFS from VMware/EMC Corporation. Available for VMware ESX Server. Symmetric.

The CXFS file system (CXFS) is a distributed networked file system designed by Silicon Graphics (SGI) specifically to be used in a SAN environment. ... Silicon Graphics, Inc. ... EMC Celerra HighRoad or lately re-named MPFS (Multi-Path/Multi-Protocol File System) is a Distributed Filesystem. ... EMC Corporation (NYSE: EMC) is an American manufacturer of software and systems for information management and storage. ... Files-11, also known as on-disk structure, is the filesystem used by Hewlett-Packards OpenVMS operating system, and also (in a simpler form) by the older RSX-11. ... A VMScluster is a computer cluster involving a group of computers running the OpenVMS operating system. ... The DEC logo Digital Equipment Corporation was a pioneering American company in the computer industry. ... The Hewlett-Packard Company (NYSE: HPQ), commonly known as HP, is a very large, global company headquartered in Palo Alto, California, United States. ... Global File System (or GFS) is a shared-storage journaled cluster, or distributed file system. ... Red Hat, Inc. ... The GNU logo The GNU General Public License (GNU GPL or simply GPL) is a widely-used free software license, originally written by Richard Stallman for the GNU project. ... General Parallel File System (GPFS) is an IBM proprietary journaled cluster file system available for AIX and Linux since 2001. ... For other uses, see IBM (disambiguation) and Big Blue. ... Replication refers to the use of redundant resources, such as software or hardware components, to improve reliability, fault-tolerance, or performance. ... The Hewlett-Packard Company (NYSE: HPQ), commonly known as HP, is a very large, global company headquartered in Palo Alto, California, United States. ... Tru64 UNIX is HPs (formerly Compaq; formerly DEC) 64-bit Unix operating system for the DEC Alpha AXP platform. ... The Nasan file system is operating system software, created by DataPlow, that facilitates high-speed file sharing among multiple client computers. ... OCFS stands for Oracle Cluster File System. ... Oracle Corporation (NASDAQ: ORCL) is one of the major companies developing database management systems (DBMS), tools for database development, middle-tier software, enterprise resource planning software (ERP), customer relationship management software (CRM) and supply chain management (SCM) software. ... The GNU logo The GNU General Public License (GNU GPL or simply GPL) is a widely-used free software license, originally written by Richard Stallman for the GNU project. ... Server message block (SMB) is a network protocol mainly applied to share files, printers, serial ports, and miscellaneous communications between nodes on a network. ... Network File System (NFS) is a network file system protocol originally developed by Sun Microsystems in 1984, allowing a user on a client computer to access files over a network as easily as if the network devices were attached to its local disks. ... The SAN File System, also known as SFS, is distributed file system software created by DataPlow that enables high-speed, cluster file sharing among multiple, storage area network (SAN)-attached computers. ... Quantums StorNext Data management software designed to streamline digital workflows and reduce data retention costs. ... Quantum Corporation is a manufacturer of tape drive products, based in San Jose, California. ... AIX (Advanced Interactive eXecutive) is a proprietary operating system developed by IBM based on UNIX System V. Before the product was ever marketed, the acronym AIX originally stood for Advanced IBM UNIX. AIX has pioneered numerous network operating system enhancements, introducing new innovations later adopted by Unix-like operating systems... HP-UX (Hewlett Packard UniX) is Hewlett-Packards proprietary implementation of the Unix operating system, based on System V (initially System III). ... IRIX is a computer operating system developed by Silicon Graphics, Inc. ... This article is about operating systems that use the Linux kernel. ... This article relates to both the original Classic Mac OS as well as Mac OS X, Apples more recent operating system. ... Solaris is a computer operating system developed by Sun Microsystems. ... “Windows” redirects here. ... Xsan is Apple Inc. ... QFS is a filesystem sold by Sun Microsystems. ... Sun Microsystems, Inc. ... Symantec Corporation NASDAQ: SYMC, founded in 1982, is an international corporation which sells computer software, particularly in the realms of security and information management. ... Xsan is Apple Inc. ... Apple Inc. ... ADIC StorNext File System is a shared-storage file system for use in a SAN made by ADIC. It is available for multiple plattforms - AIX, HP-UX, IRIX, Linux, Mac OS X, Solaris, UNICOS and Windows. ... VMware VMFS (Virtual Machine File System) is VMware, Inc. ... VMware Inc. ... EMC Corporation (NYSE: EMC) is an American manufacturer of software and systems for information management and storage. ... VMware Inc. ...

Distributed file systems

Distributed file systems are also called network file systems. Normally many implementations have been made, they are location dependent and they have access control lists (ACLs), unless otherwise stated below. // For the Microsoft distributed file system (DFS), see Distributed File System (Microsoft). ... The access control list (ACL) is a concept in computer security, used to enforce privilege separation. ...

• 9P, the Plan 9 from Bell Labs and Inferno distributed file system protocol. One implementation is v9fs. No ACLs.
• Andrew File System (AFS) is scalable and location independent, has a heavy client cache and uses Kerberos for authentication. Implementations include the original from IBM (earlier Transarc), Arla and OpenAFS.
• Apple Filing Protocol (AFP) from Apple Computer.
• DCE Distributed File System (DCE/DFS) from IBM (earlier Transarc) is similar to AFS and focus on full POSIX file system semantics and high availability. Available for AIX and Solaris under a proprietary software license.
• NetWare Core Protocol (NCP) from Novell is used in networks based on NetWare.
• Network File System (NFS) originally from Sun Microsystems is the standard in UNIX-based networks. NFS may use Kerberos authentication and a client cache.
• Self-certifying File System (SFS), a global network file system designed to securely allow access to file systems across separate administrative domains.
• Server Message Block (SMB) originally from IBM (but the most common version is modified heavily by Microsoft) is the standard in Windows-based networks. SMB is also known as Common Internet File System (CIFS) or Samba file system. SMB may use Kerberos authentication.

9P, or the Plan 9 Filesystem Protocol, is a network protocol developed for the Plan 9 distributed operating system as the means of connecting the components of a Plan 9 system (site). ... Plan 9 from Bell Labs is a distributed operating system, primarily used as a research vehicle. ... Inferno is an operating system for creating and supporting distributed services. ... Client and server implementations of the 9P distributed file system protocol for Unix-based operating systems. ... It has been suggested that OpenAFS be merged into this article or section. ... For other uses, see cache (disambiguation). ... Kerberos is the name of a computer network authentication protocol, which allows individuals communicating over an insecure network to prove their identity to one another in a secure manner. ... For other uses, see IBM (disambiguation) and Big Blue. ... An editor has expressed a concern that the subject of the article does not satisfy the notability guideline or one of the following guidelines for inclusion on Wikipedia: Biographies, Books, Companies, Fiction, Music, Neologisms, Numbers, Web content, or several proposals for new guidelines. ... Arla is an implementation of the AFS file system developed at the Royal Institute of Technology in Stockholm. ... OpenAFS is an open source implementation of the Andrew file system (AFS). ... The Apple Filing Protocol (AFP) is a layer 6 (presentation layer) network protocol that offers file services for Mac OS X and Classic Mac OS. In Mac OS X, AFP is one of several file services supported including Server Message Block (SMB), Network File System (NFS), File Transfer Protocol (FTP... Apple Inc. ... The DCE Distributed File System (DCE/DFS) is the remote file access protocol used with the Distributed Computing Environment. ... The Distributed Computing Environment (DCE) is a software system developed in the early 1990s by a consortium that included Apollo Computer (later part of Hewlett-Packard), IBM, Digital Equipment Corporation, and others. ... For other uses, see IBM (disambiguation) and Big Blue. ... An editor has expressed a concern that the subject of the article does not satisfy the notability guideline or one of the following guidelines for inclusion on Wikipedia: Biographies, Books, Companies, Fiction, Music, Neologisms, Numbers, Web content, or several proposals for new guidelines. ... POSIX or Portable Operating System Interface[1] is the collective name of a family of related standards specified by the IEEE to define the application programming interface (API) for software compatible with variants of the Unix operating system. ... A protocol and associated execution that ensures a certain relative degree of computing-system operational continuity in any downtime event. ... AIX (Advanced Interactive eXecutive) is a proprietary operating system developed by IBM based on UNIX System V. Before the product was ever marketed, the acronym AIX originally stood for Advanced IBM UNIX. AIX has pioneered numerous network operating system enhancements, introducing new innovations later adopted by Unix-like operating systems... Solaris is a computer operating system developed by Sun Microsystems. ... It has been suggested that closed source be merged into this article or section. ... The NetWare Core Protocol (NCP) is a network protocol used in some products from Novell, Inc. ... Novell Inc. ... NetWare is a network operating system developed by Novell, Inc. ... Network File System (NFS) is a network file system protocol originally developed by Sun Microsystems in 1984, allowing a user on a client computer to access files over a network as easily as if the network devices were attached to its local disks. ... Sun Microsystems, Inc. ... Kerberos is the name of a computer network authentication protocol, which allows individuals communicating over an insecure network to prove their identity to one another in a secure manner. ... For other uses, see cache (disambiguation). ... In computing, Self-certifying File System (SFS) is a global and decentralized, distributed file system for Unix-like operating systems, while also providing transparent encryption of communications as well as authentication. ... Server Message Block (SMB) is an application-level network protocol mainly applied to shared access to files, printers, serial ports, and miscellaneous communications between nodes on a network. ... For other uses, see IBM (disambiguation) and Big Blue. ... Microsoft Corporation, (NASDAQ: MSFT, HKSE: 4338) is a multinational computer technology corporation with global annual revenue of US$44. ... Samba logo. ... Kerberos is the name of a computer network authentication protocol, which allows individuals communicating over an insecure network to prove their identity to one another in a secure manner. ...

Distributed fault tolerant file systems

Distributed fault tolerant replication of data between nodes (between servers or servers/clients) for high availability and offline (disconnected) operation. Fault-tolerance or graceful degradation is the property of a system that continues operating properly in the event of failure of some of its parts. ... A protocol and associated execution that ensures a certain relative degree of computing-system operational continuity in any downtime event. ... In telecommunication, the term off-line has the following meanings: 1. ...

• Coda from Carnegie Mellon University focuses on bandwidth-adaptive operation (including disconnected operation) using a client-side cache for mobile computing. It is a descendant of AFS-2. It is available for Linux under the GPL.
• Distributed File System (Microsoft) (Dfs) from Microsoft focuses on location transparency and high availability. Available for Windows under a proprietary software license.
• InterMezzo from Cluster File Systems uses synchronization over HTTP. Available for Linux under GPL but no longer in development since the developers are working on Lustre.

Coda is a distributed filesystem, developed at Carnegie Mellon University since 1987, under the direction of Mahadev Satyanarayanan. ... Carnegie Mellon University is a private research university in Pittsburgh, Pennsylvania, United States. ... This article is about operating systems that use the Linux kernel. ... The GNU logo The GNU General Public License (GNU GPL or simply GPL) is a widely-used free software license, originally written by Richard Stallman for the GNU project. ... The Microsoft Distributed File System, or DFS, is a set of client and server services that allow a large enterprise to organize many distributed SMB file shares into a distributed file system. ... Microsoft Corporation, (NASDAQ: MSFT, HKSE: 4338) is a multinational computer technology corporation with global annual revenue of US$44. ... A protocol and associated execution that ensures a certain relative degree of computing-system operational continuity in any downtime event. ... “Windows” redirects here. ... It has been suggested that closed source be merged into this article or section. ... InterMezzo is a distributed file system written for Linux, distributed with a GPL licence. ... Cluster File Systems, Inc. ... HTTP (for HyperText Transfer Protocol) is the primary method used to convey information on the World Wide Web. ... This article is about operating systems that use the Linux kernel. ... The GNU logo The GNU General Public License (GNU GPL or simply GPL) is a widely-used free software license, originally written by Richard Stallman for the GNU project. ... Lustre is an Open Source file system for Network-attached storage, generally used for large scale cluster computing. ...

Distributed parallel file systems

Distributed parallel file systems stripe data over multiple servers for high performance. They are normally used in high-performance computing (HPC). Parallel may refer to: Parallel (geometry) Parallel (latitude), an imaginary east-west line circling a globe Parallelism (grammar), a balance of two or more similar words, phrases, or clauses Parallel (manga), a shōnen manga by Toshihiko Kobayashi Parallel (video), a video album by R.E.M. The Parallel, an... It has been suggested that this article or section be merged into Supercomputing. ...

Some of the distributed parallel file systems use object storage device (OSD) (In Lustre called OST) for chunks of data together with centralized metadata servers. An Object Storage Device (OSD) enables the creation of self-managed, shared and secure storage for storage networks. ... Metadata is data about data. ...

• Ceph from University of California, Santa Cruz. (Fault-tolerance in their roadmap.) Available for Linux under LGPL from Sourceforge.
• Lustre from Cluster File Systems. (Lustre has failover, but multi-server RAID1 or RAID5 is still in their roadmap for future versions.) Available for Linux under GPL, and for Microsoft Windows under a proprietary license.
• Parallel Virtual File System (PVFS, PVFS2). Available for Linux under GPL.
• Starfish is a POSIX-compatible, N-way redundant file system created by Digital Bazaar Inc. and published under a pseudo-open source license. Available for Linux and Mac OS. Windows support is available via Samba.

“UCSC” redirects here. ... This article is about operating systems that use the Linux kernel. ... The GNU Lesser General Public License (formerly the GNU Library General Public License) or LGPL is a free software license published by the Free Software Foundation. ... SourceForge is a collaborative revision control and software development management system. ... Lustre is an Open Source file system for Network-attached storage, generally used for large scale cluster computing. ... Cluster File Systems, Inc. ... This article is about operating systems that use the Linux kernel. ... The GNU logo The GNU General Public License (GNU GPL or simply GPL) is a widely-used free software license, originally written by Richard Stallman for the GNU project. ... “Windows” redirects here. ... PVFS is an Open Source distributed file system, generally used for large scale cluster computing. ... This article is about operating systems that use the Linux kernel. ... The GNU logo The GNU General Public License (GNU GPL or simply GPL) is a widely-used free software license, originally written by Richard Stallman for the GNU project. ... POSIX or Portable Operating System Interface[1] is the collective name of a family of related standards specified by the IEEE to define the application programming interface (API) for software compatible with variants of the Unix operating system. ... This article is about operating systems that use the Linux kernel. ... This article relates to both the original Classic Mac OS as well as Mac OS X, Apples more recent operating system. ...

Distributed parallel fault tolerant file systems

Distributed file systems, which also are parallel and fault tolerant, stripe and replicate data over multiple servers for high performance and to maintain data integrity. Even if a server fails no data is lost. The file systems are used in both high-performance computing (HPC) and high-availability clusters. Parallel may refer to: Parallel (geometry) Parallel (latitude), an imaginary east-west line circling a globe Parallelism (grammar), a balance of two or more similar words, phrases, or clauses Parallel (manga), a shōnen manga by Toshihiko Kobayashi Parallel (video), a video album by R.E.M. The Parallel, an... Fault-tolerance or graceful degradation is the property of a system that continues operating properly in the event of failure of some of its parts. ... In computer science and telecommunications, the term data integrity has the following meanings: The condition in which data is identically maintained during any operation, such as transfer, storage, and retrieval. ... It has been suggested that this article or section be merged into Supercomputing. ... High-availability clusters (also known as HA Clusters) are computer clusters that are implemented primarily for the purpose of improving the availability of services which the cluster provides. ...

All file systems listed here focus on high availability, scalability and high performance unless otherwise stated below. A protocol and associated execution that ensures a certain relative degree of computing-system operational continuity in any downtime event. ... It has been suggested that this article or section be merged with Scale (computing). ...

• dCache by Fermilab and DESY is available free of charge (although it is not Free/Open Source Software due to license restrictions on distribution of modified versions)
• ExaFS distributed file system from Exanet. Runs as part of ExaStore, a Linux based NAS solution that runs on commodity Intel based hardware, serving NFS v2/v3, SMB/CIFS and AFP to Windows, Mac OS, Linux and other UNIX clients. Available under a proprietary software license.
• Gfarm file system uses OpenLDAP or PostgreSQL for metadata and FUSE or LUFS for mounting. Available for Linux, FreeBSD, NetBSD and Solaris under X11 License.
• GlusterFS A tuneable, high-performance cluster filesystem that is part of the GNU Clustering Platform. Available for any POSIX operating system under the GPL.
• Google File System (GFS) from Google focus on fault tolerance, high throughput and scalability. Not freely available.
• IBRIX Fusion from IBRIX. Available for Linux under a proprietary software license.
• MogileFS from Danga Interactive is not POSIX compliant, uses a flat namespace, application level, uses MySQL for metadata and HTTP for transport. Available for Linux (but may be ported) under GPL.
• OneFS distributed file system from Isilon. BSD based OS on dedicated Intel based hardware, serving NFS v3 and SMB/CIFS to Windows, Mac OS, Linux and other UNIX clients under a proprietary software license.
• Panasas ActiveScale File System (PanFS) from Panasas uses object storage devices. Available for Linux under a proprietary software license.
• PeerFS from Radiant Data Corporation focus on high availability and high performance and uses peer-to-peer replication with multiple sources and targets. Available for Linux under a proprietary software license.
• TerraGrid Cluster File System from Terrascale Technologies Inc implements on demand cache coherency and uses industrial standard iSCSI and a modified version of the XFS file system. Available for Linux under a proprietary software license.

In development: Aerial view of the Fermilab site. ... The DESY (Deutsches Elektronen Synchrotron, German Electron Synchrotron) is the biggest German research center for particle physics, with sites in Hamburg and Zeuthen. ... Exanet Ltd. ... ExaStore, a clustered NAS solution from Exanet, comprises a patented NAS software, including the fully distributed ExaFS™ file system, Intel-based Linux servers (nodes), standard gigabit Ethernet networking components and Fibre channel attached storage array. ... “Windows” redirects here. ... This article relates to both the original Classic Mac OS as well as Mac OS X, Apples more recent operating system. ... This article is about operating systems that use the Linux kernel. ... Filiation of Unix and Unix-like systems Unix (officially trademarked as UNIX®, sometimes also written as or ® with small caps) is a computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs including Ken Thompson, Dennis Ritchie and Douglas McIlroy. ... It has been suggested that closed source be merged into this article or section. ... Gfarm file system is an Open Source distributed file system, generally used for large scale cluster computing. ... OpenLDAP is a free, open source implementation of the Lightweight Directory Access Protocol (LDAP). ... PostgreSQL is a free software object-relational database management system (ORDBMS), released under a BSD-style license. ... Filesystem in Userspace (FUSE) is a Free (GPL and LGPLed) Unix kernel module that allows non-privileged users to create their own file systems without the need to write any kernel code. ... This article is about operating systems that use the Linux kernel. ... FreeBSD is a Unix-like free operating system descended from AT&T UNIX via the Berkeley Software Distribution (BSD) branch through the 386BSD and 4. ... NetBSD is a freely redistributable, open source version of the Unix-like BSD computer operating system. ... Solaris is a computer operating system developed by Sun Microsystems. ... The MIT License, originated at the Massachusetts Institute of Technology, is a license for the use of certain types of computer software. ... GlusterFS is a Free software parallel distributed file system, capable of scaling to several peta-bytes. ... POSIX or Portable Operating System Interface[1] is the collective name of a family of related standards specified by the IEEE to define the application programming interface (API) for software compatible with variants of the Unix operating system. ... The GNU logo The GNU General Public License (GNU GPL or simply GPL) is a widely-used free software license, originally written by Richard Stallman for the GNU project. ... Not to be confused with GmailFS. Google File System (GFS) is a proprietary distributed file system developed by Google for its own use. ... This article is about the corporation. ... In computer science, Fault-tolerance is the property of a computer system to continue operation at an acceptable quality, despite the unexpected occurrence of hardware or software failures. ... In communication networks, throughput is the amount of digital data per time unit that is delivered over a physical or logical link, or that is passing through a certain network node. ... It has been suggested that this article or section be merged with Scale (computing). ... The IBRIX Fusion Software Suite comprises a highly scalable parallel file system, fully-integrated logical volume manager, high-availability features, and a comprehensive management interface. ... This article is about operating systems that use the Linux kernel. ... It has been suggested that closed source be merged into this article or section. ... MogileFS was created by Danga Interactive for use with LiveJournal. ... Danga Interactive is a software and Internet company most widely known for its LiveJournal service. ... POSIX or Portable Operating System Interface[1] is the collective name of a family of related standards specified by the IEEE to define the application programming interface (API) for software compatible with variants of the Unix operating system. ... MySQL (pronounced (IPA) , my S-Q-L[1]) is a multithreaded, multi-user SQL database management system (DBMS)[2] which has, according to MySQL AB, more than 10 million installations. ... HTTP (for HyperText Transfer Protocol) is the primary method used to convey information on the World Wide Web. ... This article is about operating systems that use the Linux kernel. ... The GNU logo For other uses of GPL, see GPL (disambiguation). ... Isilon Systems is a data storage systems company and develops disk-based storage systems designed to store and deliver large digital files, including images, video, audio content, and other unstructured data. ... “Windows” redirects here. ... This article relates to both the original Classic Mac OS as well as Mac OS X, Apples more recent operating system. ... This article is about operating systems that use the Linux kernel. ... Filiation of Unix and Unix-like systems Unix (officially trademarked as UNIX®, sometimes also written as or ® with small caps) is a computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs including Ken Thompson, Dennis Ritchie and Douglas McIlroy. ... It has been suggested that closed source be merged into this article or section. ... An Object Storage Device (OSD) enables the creation of self-managed, shared and secure storage for storage networks. ... This article is about operating systems that use the Linux kernel. ... It has been suggested that closed source be merged into this article or section. ... A protocol and associated execution that ensures a certain relative degree of computing-system operational continuity in any downtime event. ... A peer-to-peer (or P2P) computer network is a network that relies on the computing power and bandwidth of the participants in the network rather than concentrating it in a relatively few servers. ... This article is about operating systems that use the Linux kernel. ... It has been suggested that closed source be merged into this article or section. ... Cache coherence refers to the integrity of data stored in local caches of a shared resource. ... Internet SCSI (iSCSI) is a network protocol standard, officially ratified on 2003-02-11 by the Internet Engineering Task Force, that allows the use of the SCSI protocol over TCP/IP networks. ... XFS is a high-performance journaling file system created by Silicon Graphics for their IRIX operating system. ... This article is about operating systems that use the Linux kernel. ... It has been suggested that closed source be merged into this article or section. ...

• zFS from IBM (not to be confused with ZFS from Sun Microsystems) focus on cooperative cache and distributed transactions and uses object storage devices. Under development and not freely available.
• Hadoop Distributed File System - free GoogleFS clone in development
• HAMMER/ANVIL by Matt Dillon
• OASIS from ETRI. Very similar to the Lustre or Panasas. Available for Linux via. special technology transfer program provided by ETRI.
• parallax http://www.cl.cam.ac.uk/~akw27/papers/parallax-hotos-final.pdf

For other uses, see IBM (disambiguation) and Big Blue. ... In computing, ZFS is a file system originally created by Sun Microsystems for the Solaris Operating System. ... Sun Microsystems, Inc. ... A distributed transaction is a database transaction that must be synchronized among multiple participating databases which are distributed among different physical locations. ... An Object Storage Device (OSD) enables the creation of self-managed, shared and secure storage for storage networks. ... Hadoop is a collection of Free Java software previously developed by the Nutch project but now maintainted by Lucene[1]. The system includes a distributed filesystem reminiscent of GoogleFS named the Hadoop Distributed File System (or just DFS[1]), a clone of MapReduce called HadoopMapReduce[2] and a few other... Matt Dillon is a computer scientist, born July 1, 1966 in the Bay Area and living in Berkeley, California. ... For the English rock band, see Oasis (band). ... Lustre is an Open Source file system for Network-attached storage, generally used for large scale cluster computing. ... This article is about operating systems that use the Linux kernel. ... For other uses, see Parallax (disambiguation). ...

Special purpose file systems

• archfs (archive)
• Barracuda WebDAV plugin. Secure Network File Server for embedded devices.
• Callback File System a virtual file system for Windows
• cdfs (reading and writing of CDs)
• cfs (caching)
• compFUSEd (overlay transparent read-write compression, FUSE based )
• Cramfs (small footprint compressed read-only)
• Cromfs is a user-space (FUSE based) read-only filesystem using an efficient LZMA compression algorithm.
• Davfs2 (WebDAV)
• Freenet – Decentralized, censorship-resistant
• ftpfs (ftp access)
• FUSE (file system in userspace, like LUFS but better maintained)
• FuseCompress (based on FUSE, provides transparent compression)
• GmailFS (Google Mail File System)
• JFFS/JFFS2 (file systems designed specifically for flash devices)
• lnfs (long names)
• LUFS (Linux userland file system - seem to be abandoned in favour of FUSE)
• MVFS – MultiVersion File System, proprietary, used by Rational ClearCase.
• nntpfs (netnews)
• ParFiSys (Experimental parallel file system for massively parallel processing)
• plumber (Plan 9) (interprocess communication – pipes)
• relayfs
• romfs
• SODA: a Lease-based Consistent Distributed File System - (early 1990s)
• SquashFS (compressed read-only)
• tmpfs
• UMSDOS – FAT file system extended to store permissions and metadata, used for Linux.
• UnionFS – stackable unification file system, which can appear to merge the contents of several directories (branches), while keeping their physical content separate
• wikifs (Plan 9) (wiki wiki)
• YAFFS - Yet Another Flash File System. Multi-OS support, especially useful for large NAND flash arrays.
• WDK.VFS - SiteAdmin CMS Virtual File System introduced by Evgenios Skitsanos
• Non-Volatile File System -- the "non-volatile file system" for flash memory introduced by Palm, Inc..

CDfs is a virtual Linux file system that provides access to individual data and audio tracks on compact discs. ... CFS is an acronym for: Canada Flight Supplement Canadian Forces Station - see Canadian Forces Base Canadian Federation of Students Central Flying School Central Flying School RAAF Chicken fried steak Chronic fatigue syndrome Church Farm School Co-operative Financial Services Combat Flight Simulator Completely Fair Scheduler, a Linux operating system scheduler... The compressed ROM filesystem (or cramfs) is a read-only Linux filesystem designed for simplicity and space-efficiency. ... Davfs2 is a Linux file system driver that allows you to mount a WebDAV server as a local disk drive. ... WebDAV was a working group of the Internet Engineering Task Force (IETF). ... For other uses, see Freenet (disambiguation) Freenet is a decentralized censorship-resistant peer-to-peer distributed data store aiming to provide electronic freedom of speech through strong anonymity. ... Filesystem in Userspace (FUSE) is a Free (GPL and LGPLed) Unix kernel module that allows non-privileged users to create their own file systems without the need to write any kernel code. ... Filesystem in Userspace (FUSE) is a Free (GPL and LGPLed) Unix kernel module that allows non-privileged users to create their own file systems without the need to write any kernel code. ... GmailFS is a virtual file system developed by Richard Jones which allows users to mount and use their Gmail email accounts storage as a local disk drive. ... The Journaled Flash File System (or JFFS) is a log-structured file system for use on NOR flash memory devices. ... The Journalling Flash File System version 2 or JFFS2 is a log-structured file system for use in flash memory devices. ... A USB flash drive. ... Plan 9 filesystem enabling use of long filenames on filesystems which do not support them. ... Filesystem in Userspace (FUSE) is a Free (GPL and LGPLed) Unix kernel module that allows non-privileged users to create their own file systems without the need to write any kernel code. ... MVFS (MultiVersion File System) is a virtual filesystem which displays specific versions of data stored in ClearCase. ... Rational ClearCase is a software tool for revision control (configuration management, SCM etc) of source code and other software development assets. ... Massively Parallel Processing is a term used in Computer Engineering. ... The plumber, in the Plan 9 operating system, is a mechanism for interprocess communication, somewhat similar to copy and paste. ... Paraphrasing from the official website: Relayfs is a filesystem for the Linux operating system that makes per-CPU kernel buffers look like files (that can be mmaped and directly read) from non-kernel (i. ... In computing, the Rom Filesystem is an extremely simple filesystem lacking many features, intended for burning important files onto an EEPROM. It is available on Linux, and possibly other UNIX-like systems. ... Squashfs (.sfs) is a free (GPL) compressed read-only file system for the Linux operating system. ... tmpfs is a common name for a temporary file storage facility on many Unix-like operating systems. ... UMSDOS is a filesystem driver for Linux that simulates the more advanced features of a UNIX filesystem while using an MS-DOS style FAT partition. ... UnionFS is a Linux filesystem service which implements a union mount for Linux file systems. ... Wikifs is a wiki file system for the Plan 9 operating system. ... Look up Wiki in Wiktionary, the free dictionary. ... This article needs to be cleaned up to conform to a higher standard of quality. ... Non-Volatile File System (NVFS) is a Flash memory File System introduced in the release of Palms latest Personal Digital Assistant handheld models Tungsten T5, Tungsten E2, Palm TX, and Treo 650. ... A USB flash drive. ... Palm, Inc. ...

Pseudo- and virtual file systems

• devfs
• procfs – pseudo-file system, used to access kernel information about processes
• specfs (Special File System for device files )
• sysfs (Linux)

devfs is an umbrella term for special-purpose file systems present on many Unix-like operating systems, used for presenting device files, an abstraction for accessing I/O and other peripherals. ... On Unix-like computer systems, procfs is short for process filesystem: a pseudo-filesystem which is used to access kernel information about processes. ... On Unix-like computer systems, specfs is short for special filesystem: This is not a physical or network file system by any means and it does not have a mount point either. ... Sysfs is a virtual file system provided by the 2. ... This article is about operating systems that use the Linux kernel. ...

Encrypted file systems

• eCryptfs - a stacked cryptographic filesystem in the Linux kernel since 2.6.19
• Secure Shell File System (SSHFS) - locally mount a remote directory on a server using only a secure shell login.
• EncFS, GPL Encrypted file system in user-space
• Rubberhose filesystem
• PhoneBookFS
• Solid File System - (SolFS) cross-platform single-file virtual file system with encryption and compression
• EFS – Encrypted file system for Microsoft Windows systems. An extension of NTFS
• FSFS - Fast Secure File System Project Home page
• TrueCrypt – Free open-source disk encryption software for Windows Vista/XP/2000 and Linux – Project Home Page

SSHFS (Secure SHell FileSystem) is a file system for Linux (and other operating systems with a FUSE implementation, such as Mac OS X) capable of operating on files on a remote computer using just a secure shell login on the remote computer. ... Secure Shell or SSH is a network protocol that allows data to be exchanged over a secure channel between two computers. ... EncFS is a Free (GPLed) FUSE-based cryptographic filesystem that transparently encrypts files, using an arbitrary directory as storage for the encrypted files. ... Disk encryption is a computer security technique that encrypts data stored on a computers mass storage and automatically decrypts the information when an authorized user requests it. ... The Encrypting File System (EFS) is a file system with filesystem-level encryption available in Microsofts Windows 2000 and later operating systems. ... “Windows” redirects here. ... NTFS is the standard file system of Windows NT, including its later versions Windows 2000, Windows XP, Windows Server 2003, Windows Server 2008, and Windows Vista. ...

Fault tolerant file systems

• RAIF Redundant Array of Independent Filesystems - stackable RAID-like file system
• Datalight Reliance (tm) - transactional file system for 32 bit embedded systems from Datalight, Inc.
• ERTFS ProPlus64 - it comes with integrated Failsafe operation it contains a default journaling mode.

Redundant Array of Independent Filesystems (RAIF) is a RAID-like stackable fan-out file system. ...

See also

• Shared file access
• Comparison of file systems
• Filing OSID
• Computer storage
• Concurrent Versions System - CVS

In computing, a shared resource is a device or piece of information on a computer that is accessed from another computer via a network, as if it were a local resource. ... The following tables compare general and technical information for a number of file systems. ... The Filing Open Service Interface Definition (OSID) is an O.K.I. specification. ... This article does not cite any references or sources. ... The Concurrent Versions System (CVS), also known as the Concurrent Versioning System, is an open-source version control system invented and developed by Dick Grune in the 1980s. ...

External links

• File Systems