The EncryptingFileSystem EFS on Microsoft Microsoft Windows Windows is a filesystem filter that provides ... key. Operation Image EFSOperation.svg thumb right 300px Operation of EncryptingFileSystem EFS works by encrypting a file with a bulk symmetric key , also known as the File Encryption Key, or FEK ... file. ref cite web url http www.anvir.com encryptingfile system.htm title EncryptingFileSystem ... b a ebafefc9 4b64 4816 8778 9fb33c8c43d9 31 Rights Management og EncryptingFile Systems.pdf title Windows Vista Session 31 Rights Management Services and EncryptingFileSystem author Kim Mikkelsen date ... to Windows Server 2008 EncryptingFileSystem date 2007 09 01 accessdate 2007 11 06 work documentation ... en us magazine 2006.05.howitworks.aspx title How IT Works EncryptingFileSystem last Muller first ... en us library dd277413.aspx EncryptingFileSystem in Windows 2000 http technet.microsoft.com en us library cc700811.aspx EncryptingFileSystem in Windows XP and Microsoft Windows Server 2003 ... EncryptingFileSystem in Windows XP and Windows Server 2003 http msdn2.microsoft.com en ... en us library bb457116.aspx Using EncryptingFileSystem in Windows XP http www.microsoft.com ... system technology Category Microsoft Windows security technology Category Windows 2000 cs EncryptingFileSystem de EncryptingFileSystem es EFS fr EncryptingFileSystem id EncryptingFileSystem it EncryptingFileSystem hu Titkos t f jlrendszer pt EncryptingFileSystem ru EncryptingFileSystem ... Group Policy . Cryptographic filesystem implementations for other operating systems are available, but generally .... Folders whose contents are to be encrypted by the filesystem are marked with an encryption ... and folders are decrypted before being copied to a volume formatted with another filesystem, like ... FileSystem date 2007 04 30 accessdate 2007 11 06 work documentation publisher Microsoft ref ref name ... msdn.microsoft.com en us library aa364223 28VS.85 29.aspx title File Encryption Windows publisher Microsoft ... more details
A systemfile is a computer file important to the operating system . More specifically, it may refer to code .sys code a Microsoft Windows file extension for system related files The System suitcase on Mac OS Any file marked with a system attribute computing attribute sys is the root directory of the Linux filesystem sysfs disambig Category Files el ko ru ... more details
2008 A filesystem sometimes written as filesystem is a method of storing and organize organizing computer ..., organization, manipulation, and retrieval by the computer s operating system . File systems are used ... protocol e.g., Network FileSystem protocol NFS , Server Message Block SMB , or 9P clients , or they may ... are most common . The filesystem is responsible for organizing these sectors into computer file files ... called cluster filesystem clusters or block data storage block s which contain a certain number of disk ... a file. However, file systems need not make use of a storage device at all. A filesystem can be used ... storage location in the computer memory . Whether the filesystem has an underlying storage device ... Allocation Table FAT in a DOS filesystem, or an inode in a Unix like filesystem. Directory ... system. The file size length of the data contained in a file may be stored as the number of blocks allocated for the file or as an exact byte count. The system time time that the file was last modified ... s device file device type e.g., Device filesystem Block devices block , Device filesystem ... user ID and Group computing group ID , and its filesystem permissions access permission settings ... file systems, such as NTFS , XFS , ext2 ext3 , some versions of Unix FileSystem UFS , and HFS ... text document, or a checksum . Hierarchical file systems The hierarchical filesystem not to be confused with Apple Computer Apple s Hierarchical FileSystem HFS was an early research interest ... the success of Unix, Ritchie extended the filesystem concept to every object in his later operating ... have to be implemented outside of the filesystem because the pipes concept does not offer truncation ... systems still use access control lists. Types of file systems Filesystem types can be classified ... filesystem is a filesystem designed for the storage of computer file files on a data storage ... , Hierarchical FileSystem HFS and HFS Plus HFS , HPFS , Unix FileSystem UFS , ext2 , ext3 , ext4 ... more details
infobox filesystem name BFS full name Be FileSystem developer Be Inc. introduction os BeOS Advanced ... range Unknown date resolution 1s forks streams Yes attributes POSIX ACLs Read, Write, Execute filesystem permissions Yes, POSIX RWX per owner, group and all compression No encryption No OS BeOS , Magnussoft ZETA ZETA , Haiku operating system Haiku , SkyOS , Syllable operating system Syllable The Be File ... any confusion with Boot FileSystem is the native filesystem for the BeOS . BFS was developed by Dominic ... filesystem design.pdf title Practical FileSystem Design with the Be FileSystem publisher Morgan ... filesystem . ref cite web url http www.theregister.co.uk 2002 03 29 windows on a database sliced ..., as the filesystem headers consume from 600KB to 2MB, rendering floppy disks virtually useless. Like its predecessor, OFS Old Be FileSystem, written by Benoit Schillings , was also called ... database . Whilst intended as a 64 bit capable filesystem, the size of some on disk structures ... blocks in a pathological worst case, depending on the degree of filesystem fragmentation fragmentation ... part, documented in the book Practical FileSystem Design with the Be FileSystem . ref name ... implementations for Linux . In early 1999, Makoto Kato developed a Be FileSystem driver for Linux ... Szeleney announced that he had developed a fork of this OpenBFS filesystem for use in his SkyOS ... of file systems AtheOS FileSystem References Reflist External links http arstechnica.com open source news 2010 06 the beos filesystem.ars The BeOS filesystem an OS geek retrospective Filesystem Category Disk file systems Category BeOS Category Haiku de Be FileSystem fr BeOS filesystem gl BFS it Be FileSystem pl BeFS pt Be FileSystem ru BeFS uk BeFS ... Map br 0xEB Master Boot Record MBR directory struct B tree file struct inode s bad blocks struct inodes max filename size 255 characters max files no Unlimited max volume size 2 Exabyte EB max file size ... more details
Summary Scanned by User Ant Ant . Category System 7 band album covers Licensing Non free album cover Non free media rationale Description Cover art for System Express album Source scan of CD cover Portion All Resolution Medium, 500px square low quality for print media Article System Express Purpose This album cover is the primary means of visual identification of the album discussed in the System Express article Replaceability No replacement available other information ... more details
There is also a different filesystem called EncryptingFileSystem EFS under Microsoft Windows 2000 . EFS Extent FileSystem is an older block filesystem used in Silicon Graphics IRIX versions prior to the 5.3 release. EFS has been superseded by XFS . External links http aeschi.ch.eu.org efs EFS support for Linux http cvsweb.netbsd.org bsdweb.cgi src sys fs efs EFS support for NetBSD Compu storage stub Category Disk file systems ... more details
4.0 for the experimental Ficus filesystem Ficus filesystem . This design provided for code reuse among filesystem types with differing but similar semantics e.g. , an encryptingfilesystem could reuse all of the naming and storage management code of a non encryptingfilesystem . Heidemann ...Refimprove date October 2009 OS A virtual filesystem VFS or virtual filesystem switch is an abstraction layer on top of a more concrete filesystem . The purpose of a VFS is to allow client applications ... of those types without having to know what type of filesystem they are accessing. A VFS specifies ... filesystem. Therefore, it is easy to add support for new filesystem types to the kernel ... to release, which would require that concrete filesystem support be recompiled, and possibly modified ... filesystem support built for a given release of the operating system would work with future versions of the operating system. Implementations One of the first virtual filesystem mechanisms ... calls to access local Unix FileSystem UFS file systems and remote Network FileSystem protocol NFS ... of the MS DOS File Allocation Table FAT filesystem developed at Sun that plugged into the SunOS ... the filesystem implementations in modern BSD derivatives including Mac OS X . Other Unix virtual file systems include the FileSystem Switch in System V Release 3 , the Generic FileSystem in Ultrix , and the VFS in Linux . In OS 2 and Microsoft Windows , the virtual filesystem mechanism is called the Installable FileSystem . The Filesystem in Userspace FUSE mechanism allows userland computing userland code to plug into the virtual filesystem mechanism in Linux, NetBSD , FreeBSD , OpenSolaris ... Shell extension Shell namespace extensions however, they do not support the lowest level filesystem .... Single file virtual file systems Sometimes Virtual FileSystem refers to a file or a bunch of files not necessarily inside a concrete filesystem that acts as a manageable container which should provide ... more details
Fast FileSystem may refer to Berkeley Fast FileSystem , as used by the various BSD variants Amiga Fast FileSystem , as used by AmigaOS Disambig de Fast FileSystem sv Fast FileSystem ... more details
Network filesystem may refer to A distributed filesystem , which is accessed over a computer network Network FileSystem protocol , a specific brand of distributed filesystem. disambig ... more details
A distributed filesystem is a filesystem where data is distributed across multiple nodes. Distributed filesystem can also refer to Shared disk filesystem , a different approach, also known as cluster filesystem. Distributed FileSystem Microsoft , the Microsoft distributed filesystem DFS DCE Distributed FileSystem , the distributed filesystem from The Open Group and earlier from IBM Distributed data store disambig ... more details
High Throughput FileSystem HTFS is the journaling filesystem journaling filesystem used by current versions of SCO OpenServer . It is the successor of EAFS . Category Computer file systems compu storage stub ... more details
No footnotes date March 2010 Infobox filesystem name ext full name Extended filesystem developer introduction os Linux introduction date April 1992 partition id directory struct Table file struct bitmap free space , table metadata bad blocks struct Table max filename size max files no max volume size max file size filename character set dates recorded date range date resolution forks streams attributes filesystem permissions POSIX compression directory struct encryption No OS The extended filesystem or ext was implemented in April 1992 as the first filesystem created specifically for the Linux operating system. It has metadata structure inspired by the traditional Unix FileSystem UFS and was designed by R my Card to overcome certain limitations of the Minix filesystem . It is the first of the extended file systems. It was superseded by both ext2 and xiafs , between which there was a competition, which ext2 won because of its long term viability. Other extended file systems There are other members in the extended filesystem family ext2 , the second extended filesystem. ext3 , the third extended filesystem. ext4 , the fourth extended filesystem. See also List of file systems Comparison of file systems External links http e2fsprogs.sourceforge.net ext2intro.html History of Linux file systems Design and Implementation of the Second Extended Filesystem Filesystem DEFAULTSORT Extended FileSystem Linux stub Compu storage stub Category 1992 software Category Disk file systems Category Linux file systems cs Extended filesystem da Ext filsystem es Extended filesystem eo Ext fr Extended filesystem ko it Extended filesystem nl Extended FileSystem ja Ext pl Ext pt Ext ru Ext tr Ext ... more details
These file systems have been the default filesystem of the Apple Computer Apple Macintosh The Macintosh FileSystem or MFS, 1984 1985, full support discontinued with System 7.6.1 The Hierarchical FileSystem or HFS, 1985 until the release of Mac OS X, still supported as of 2007 The HFS Plus Hierarchical FileSystem Plus or HFS , released 1998, default since Mac OS X disambig ... more details
Unreferenced stub auto yes date December 2009 The AtheOS filesystem AFS was originally used in the AtheOS operating system , and is now a part of the Syllable operating system Syllable operating system. AFS started with exactly the same data structure s as the Be FileSystem , BFS, and extended its feature set in many ways. As such, AFS is a 64 bit journaled filesystem with support for file attributes. File indexing and soft deletion s are also partially supported. A few definitions Journaled All filesystem transactions are first written to a journal before they are executed. When mounted, the filesystem replays everything in the journal. So, if something catastrophic occurs as data is being written to the filesystem, the filesystem can recover. File Attributes Name value pairs tacked on to a file. For example, an audio file might have attributes for Artist, Title, and Album. This lets the filesystem search files in intelligent and flexible ways example search for all songs by Elton John that exist on the drive. File Indexing A persistent and up to date list of all files with a specific attribute, and the value of that attribute. So, the system may have an index for the Artist attribute on MP3 files. This speeds searching, but slows system performance when large numbers of files are created. Soft Deletions When the filesystem is told to delete a file, the file is actually hidden, and removed later by other means. In AFS, files are moved to an invisible directory and only deleted when the filesystem is next mounted. DEFAULTSORT Atheos FileSystem Category Disk file systems Compu storage stub lt AtheOS fail sistema pl AtheOS FS fi AtheOS tiedostoj rjestelm ... more details
Infobox Software name IBM SAN FileSystem screenshot caption developer IBM latest release version 2.2.3 127 latest release date March 2007 operating system Linux server br IBM AIX operating system AIX , Linux, Solaris operating system Solaris , Microsoft Windows Windows and Windows and Linux VMware guests Client genre filesystem license Proprietary software Proprietary website http www 03.ibm.com servers storage software virtualization sfs index.html www.ibm.com The IBM SAN FileSystem is a distributed, heterogeneous filesystem developed by IBM to be used in storage area network s. There are many virtualization features included, such as allowing heterogeneous operating system s to access the same data and file spaces. IBM discontinued selling the SAN FileSystem in April 2007. It has been replaced by IBM General Parallel FileSystem GPFS . External links http www 03.ibm.com servers storage software virtualization sfs index.html SAN FileSystem at IBM DEFAULTSORT Ibm San FileSystem Category Shared disk file systems Category IBM storage devices SAN FileSystem compu storage stub ... more details
The Logic FileSystem is a research filesystem which replaces pathnames with expressions in propositional logic . It allows file metadata to be queried with a superset of the Boolean algebra logic Boolean syntax commonly used in modern search engine s. The actual name is the Logic Information Systems FileSystem, and is abbreviated LISFS to avoid confusion with the log structured filesystem LFS . An implementation of the Logic FileSystem is available at the LISFS website http lfs.irisa.fr . It is intended to be used on Unix like operating systems and is a bit difficult to install, as it needs several non standard OCaml modules. References Ferr , S bastian and Ridoux, Olivier 2000 . http www.irisa.fr LIS slides dood2000.pdf A FileSystem Based on Concept Analysis . Padioleau, Yoann and Ridoux, Olivier 2003 . http www.usenix.org events usenix03 tech padioleau.html A Logic FileSystem . Padioleau, Yoann and Ridoux, Olivier 2005 . http www.usenix.org events usenix05 tech general padioleau.html A Parts of FileFileSystem . External links The Logical Information Systems http lfs.irisa.fr homepage broken . operating system stub Category Computer file systems Category Semantic file systems ... more details
Unreferenced stub auto yes date December 2009 The Remote FileSystem RFS was a distributed filesystem developed by AT&T in the 1980s. It was first delivered with UNIX System V Release 3 SVR3 . Compared to Network FileSystem protocol NFS it made quite different design decisions. Instead of focusing on reliable operation in the presence of failures, it focused on preserving UNIX filesystem semantics ... to files. Users needn t know where a file is located. Remote system call interface ACCESS SYSACCT CHDIR Change directory CHMOD Change file mode CHOWN Change file owner CHROOT CLOSE Close a file CREAT Create a file EXEC Execute a file EXECE Execute a file with an environment FCNTL FSTAT Stat a file using a file descriptor FSTATFS Stat a filesystem using a file descriptor IOCTL LINK First half of link operation LINK1 Second half of link operation MKNOD Make block or character special file OPEN Open a file READ Read from a file SEEK Seek on a file STAT Stat a file using pathname STATFS Stat a filesystem using pathname UNLINK UTIME UTSSYS Return information about a mounted files WRITE GETDENTS Read directory entries in a filesystem MKDIR RMDIR SRMOUNT Server side of remote mount SRUMOUNT Server side of remote unmount COREDUMP Dump core request WRITEI Internal form of write system call READI Internal form of read system call RSIGNAL Sendremote signal SYNCTIME Synchronize time between ... to disk. See also AppleTalk Network FileSystem protocol Network FileSystem Samba software Samba Server Message Block WebDAV Category Internet protocols Category Network file systems Category Network related software Category System V Compu storage stub ... to keep track of how many times a file has been opened, if any process has Lock computer science locked the file, etc. RFS was a product from Bell Laboratories . People involved in the creation of RFS ... Shah , and Kang Yueh . Features Provides complete UNIX POSIX file semantics. File locking, etc. Allows ... more details
Orphan date February 2009 Opera FileSystem was a filesystem used in 3DO Interactive Multiplayer 3DO discs. Recently was implemented in Linux http www.stack.nl svdb operafs OperaFS and can be read and copied in CloneCD v4.2 or later. Category Disk file systems comp stub ... more details
orphan date August 2010 The Fusion Flash FileSystem is a filesystem for computer s, using embedded Flash memory , written in ANSI C , targeted at embedded system uses where Flash, Random access memory RAM or Read only memory ROM is used for the file Data storage device storage media . It uses a OSI model layered device driver Computer architecture architecture , using a simple binding model, to allow operating system agnostic or independent Porting portability meaning that the filesystem is compatible with most operating systems and is thus not bound to any one Real time operating system RTOS . As embedded file systems typically require low memory usage, Fusion is compact. The memory is also fully dynamic, not a read only ROM style filesystem. According to the vendor s web site, it is Multithreading computer hardware multithread capable and File Allocation Table FAT12 FAT16 FAT32 compatible. It also features wear leveling , post Error detection and correction error correction and data compression . As with many commercial file systems, Fusion FileSystem is accompanied by a full suite of supporting software modules which include error correction, file compression, Fusion Standard C lib , driver model and an I O manager. Category Flash file systems storage software stub ... more details
A clustered filesystem is a filesystem which is shared by being simultaneously Mount computing mounted ... , most of which do not employ a clustered filesystem. While many computer cluster s don t use clustered file systems, unless servers are underpinned by a clustered filesystem the complexity of the underlying storage environment increases as servers are added. Shared disk A shared disk filesystem ... filesystem, a shared disk filesystem adds a mechanism for concurrency control which conventional filesystems intended for local consistent and serialization serializable view of the filesystem ... architectural approaches to a shared disk filesystem. Some distribute file information ... ALICE will be using a 4 Gbit s Fibre Channel Storage area network SAN with a clustered filesystem ... July 2007 accessdate 2007 07 20 ref Examples Ceph New Dream Network DataPlow Nasan FileSystem DataPlow SAN FileSystem SFS GlusterFS Z Research IBM General Parallel FileSystem GPFS Microsoft Cluster Shared Volumes CSV OCFS Oracle Cluster FileSystem OCFS PolyServe storage solutions Quantum Corporation Quantum StorNext FileSystem StorNext FileSystem SNFS , ex ADIC, ex CentraVision FileSystem CVFS Silicon Graphics clustered filesystem CXFS Red Hat Global FileSystem GFS Sanbolic Melio FS clustered filesystem Sun QFS TerraScale Technologies TerraFS Tiger Technology metaSAN clustered filesystem Veritas Cluster FileSystem VMware VMFS Xsan For more, see Category Shared disk file systems or List ... and a filesystem, like a SAN shared disk filesystem. NAS typically uses file based protocols as opposed to block based protocols such as Network FileSystem protocol NFS popular on UNIX systems , SMB CIFS CIFS Server Message Block Common Internet FileSystem used with MS Windows systems , or Apple ..., clients must be unaware of the physical location of a file. A single global filesystem is presented to clients, so the filesystem itself deals with allocations and low level failures. Examples ... more details
A special filesystem presents non file elements of an operating system as files. Device File Systems main device filesystem Many special file systems are used to transact data and control devices as if they were files. The mechanism has appeared as far back as DOS and may be referred to as device nodes . This includes devfs , used in Unix like systems. udev , a newer type used in Linux 2.6. Others Some are close to being device file systems, such as sysfs . Procfs maps processes into filespace. Category Special purpose file systems computer stub ... more details
nofootnotes date September 2008 In computing, the term object based filesystem refers to an architectural blueprint for List of file systems Distributed file systems distributed file systems . An object based filesystem splits file metadata such as the filename, its size and access times from file data and stores them on different File server servers . File metadata is stored on metadata servers, the file data is split into so called objects and stored on object storage servers. The filesystem client employs metadata and object storage servers to present a full filesystem Abstraction computer science abstraction to the User computing users . The object based filesystem architecture has several advantages The filesystem Client computing client accesses file content directly via object storage servers. Metadata servers are only contacted once when the file is opened, thereby eliminating the metadata bottleneck of block based distributed file systems. The size of these objects can usually be configured on per file basis. This allows the stripe width to be adapted to the access properties of an individual file when the objects of a file are Data striping striped across multiple object storage servers. File systems that follow an object based architecture include Lustre filesystem Lustre and EXOFS exofs . Sources cite journal last Mesnier first M. coauthors Ganger G., Riedel E title Object based storage journal IEEE Communications Magazine 2003 volume 8 pages 84 90 cite conference first M. last Factor coauthors Meth K. Naor D., Rodeh O., Satran J. title Object storage The future building block for storage systems booktitle Local to Global Data Interoperability Challenges and Technologies pages 119 123 publisher IEEE Computer Society date 2005 url http ieeexplore.ieee.org xpl freeabs all.jsp?arnumber 1612479 doi 10.1109 LGDI.2005.1612479 accessdate compu storage stub Category Computer file systems ... more details
Semantic File Systems are filesystem s used for information persistence which structure the data according to their semantics and intent, rather than the location as with current file systems. It allows the data to be addressed by their content associative access and querying for the data. See also WinFS Semantic Web Tagsistant Logic FileSystem External links https blueprints.launchpad.net ubuntu spec tag based filesystem A tag based filesystem for ubuntu http www.organise fw.org media documents paper iswc2008.pdf Towards Semantic FileSystem Interfaces, Proceedings of the International Semantic Web Conference 2008 http www.objs.com survey OFSExt.htm Semantic File Systems http www.psrg.lcs.mit.edu publications Papers sfs.pdf Semantic FS MIT Programming Systems Research Group http www.prashblog.com 2008 08 code page.html SemFS A Semantic approach to File Systems http transparentag.sourceforge.net TransparenTag FileSystem compatible with point n click and command line interfaces http www.namesys.com whitepaper.html ReiserFS future vision broken link http www.doi.org 10.1007 978 3 642 02121 3 8 The Sile Model A Semantic FileSystem Infrastructure for the Desktop http semanticweb.org wiki SemFS Related Work and Publications external list of related work on semantic file systems http tagxfs.sourceforge.net tagxfs A tag based user space filesystem extension. Category Semantic file systems computer stub ... more details
Infobox software name Gfarm filesystem logo Image Gfarm logo.png developer http www.apgrid.org Asia Pacific Grid latest release version 2.4.1 latest release date December 31, 2010 operating system Linux , FreeBSD , NetBSD , Solaris Operating System Solaris genre Distributed filesystem license X11 License X11 website http datafarm.apgrid.org Gfarm filesystem Gfarm filesystem is an Open Source distributed filesystem , generally used for large scale cluster computing . The name is derived from the Grid Data Farm architecture it implements. Grid Datafarm is a petascale data intensive computing project initiated in Japan. The project is a collaboration among High Energy Accelerator Research Organization KEK , National Institute of Advanced Industrial Science and Technology AIST , the University of Tokyo, Tokyo Institute of Technology and University of Tsukuba. The challenge involves construction of a Peta to Exascale parallel filesystem exploiting local storages of PCs spread over the worldwide Grid. See also Distributed filesystem List of file systems Distributed parallel fault tolerant file systems List of file systems, the distributed parallel fault tolerant filesystem section References Osamu Tatebe, Kohei Hiraga, Noriyuki Soda, Gfarm Grid FileSystem , New Generation Computing, Ohmsha, Ltd. and Springer, Vol. 28, No. 3, pp.257 275, 2010. External links http datafarm.apgrid.org Gfarm filesystem Home Page http sourceforge.net projects gfarm Gfarm project page at SourceForge http www.hpcc.nectec.or.th wiki index.php Gfarm files system Gfarm Wiki at Nectec HPCC Category Distributed file systems Category Linux file systems Category Network file systems Compu storage stub ... more details
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