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ZFS is a combined file system and logical volume manager designed by Sun Microsystems. [1]

141 relations: Access control list, Adaptive replacement cache, Apple Inc., ASCII, BeleniX, Btrfs, Character encoding, Checksum, Clustered file system, Code name, Common Development and Distribution License, Comparison of file systems, Copy-on-write, CPU cache, Cryptographic hash function, Data compression, Data compression ratio, Data corruption, Data deduplication, Data degradation, Data Integrity Field, Data redundancy, Data scrubbing, Data striping, Debian GNU/kFreeBSD, Disk encryption, Disk mirroring, Disk partitioning, Disk quota, DistroWatch, DragonFly BSD, Electric current, Endianness, Error recovery control, Exbibyte, Ext4, Extended file system, File system, Filesystem in Userspace, Firmware, Fletcher's checksum, Fork (software development), Free and open-source software, FreeBSD, FreeNAS, Fsck, Geli (software), GEOM, GitHub, Gnome, ..., GNU General Public License, GNU GRUB, GNU variants, Google Summer of Code, Graphical user interface, Gzip, HAMMER, Host adapter, Illumos, Intent log, IOPS, ISCSI, IXsystems, Jeff Bonwick, JFS (file system), Lawrence Livermore National Laboratory, Linux, Linux kernel, List of file systems, Loadable kernel module, Log-structured File System (BSD), Logical volume management, Logical Volume Manager (Linux), LWN.net, LZJB, Merkle signature scheme, Merkle tree, Metadata, MidnightBSD, NAS4Free, NetApp, NetBSD, Netgear, Network File System, Network-attached storage, Nexenta Systems, NexentaStor, NILFS, Non-RAID drive architectures, NTFS, Object model, Open-source software, OpenIndiana, OpenSolaris, OpenZFS, Oracle Corporation, OS X, OS X Server, OSv, Page cache, PC-BSD, Phoronix, POSIX, Prentice Hall, RAID, Read-modify-write, ReFS, Reiser4, Root directory, Samba (software), SchilliX, Server Message Block, SHA-2, Small office/home office, Snapshot (computer storage), Solaris (operating system), Solid-state drive, SPARC, Standard RAID levels, STec, Inc., Sun Microsystems, Sun Open Storage, The Register, Transaction processing, TrueNAS, UB, Unicode, Unix File System, User space, Veritas File System, Veritas Volume Manager, Versioning file system, Virtual device, Volume (computing), Write Anywhere File Layout, X86, XFS, ZDNet, Zebibyte, ZFS, 128-bit. Expand index (91 more) »

Access control list

An access control list (ACL), with respect to a computer file system, is a list of permissions attached to an object.

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Adaptive replacement cache

Adaptive Replacement Cache (ARC) is a page replacement algorithm with better performance than LRU (Least Recently Used) developed at the IBM Almaden Research Center.

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Apple Inc.

Apple Inc. (commonly known as Apple) is an American multinational technology company headquartered in Cupertino, California, that designs, develops, and sells consumer electronics, computer software, and online services.

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ASCII, abbreviated from American Standard Code for Information Interchange, is a character-encoding scheme (the IANA prefers the name US-ASCII).

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BeleniX was an operating system distribution built using the OpenSolaris source base.

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Btrfs (B-tree file system, pronounced as "butter F S", "better F S", "b-tree F S", or simply by spelling it out) is a GPL-licensed copy-on-write file system for Linux.

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Character encoding

In computing, a character encoding is used to represent a repertoire of characters by some kind of an encoding system.

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A checksum or hash sum is a small-size datum from a block of digital data for the purpose of detecting errors which may have been introduced during its transmission or storage.

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Clustered file system

A clustered file system is a file system which is shared by being simultaneously mounted on multiple servers.

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Code name

A code name or cryptonym is a word or name used, sometimes clandestinely, to refer to another name, word, project or person.

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Common Development and Distribution License

Common Development and Distribution License (CDDL) is a free software license, produced by Sun Microsystems, based on the Mozilla Public License (MPL).

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Comparison of file systems

The following tables compare general and technical information for a number of file systems.

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Copy-on-write (sometimes referred to as "COW"), sometimes referred to as implicit sharing, is an optimization strategy used in computer programming.

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CPU cache

A CPU cache is a cache used by the central processing unit (CPU) of a computer to reduce the average time to access data from the main memory.

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Cryptographic hash function

A cryptographic hash function is a hash function which is considered practically impossible to invert, that is, to recreate the input data from its hash value alone.

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Data compression

In digital signal processing, data compression, source coding, or bit-rate reduction involves encoding information using fewer bits than the original representation.

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Data compression ratio

Data compression ratio, also known as compression power, is a computer science term used to quantify the reduction in data-representation size produced by a data compression algorithm.

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Data corruption

Data corruption refers to errors in computer data that occur during writing, reading, storage, transmission, or processing, which introduce unintended changes to the original data.

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Data deduplication

In computing, data deduplication is a specialized data compression technique for eliminating duplicate copies of repeating data.

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Data degradation

Data degradation, also known as data decay or data rot, is a colloquial computing phrase for the gradual decay of storage media.

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Data Integrity Field

Data Integrity Field (DIF) was an approach to protect data integrity in computer data storage.

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Data redundancy

In computer main memory, auxiliary storage and computer buses, data redundancy is the existence of data that is additional to the actual data and permits correction of errors in stored or transmitted data.

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Data scrubbing

Data scrubbing is an error correction technique that uses a background task to periodically inspect main memory or storage for errors, and then correct detected errors using redundant data in form of different checksums or copies of data.

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Data striping

In computer data storage, data striping is the technique of segmenting logically sequential data, such as a file, so that consecutive segments are stored on different physical storage devices.

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Debian GNU/kFreeBSD

Debian GNU/kFreeBSD is an operating system released by the Debian project.

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Disk encryption

Disk encryption is a technology which protects information by converting it into unreadable code that cannot be deciphered easily by unauthorized people.

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Disk mirroring

In data storage, disk mirroring is the replication of logical disk volumes onto separate physical hard disks in real time to ensure continuous availability.

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Disk partitioning

Disk partitioning is used to mean the partitioning or division of certain kinds of secondary storage (such as hard disk drives (HDDs)), via the creation of multiple partitions.

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Disk quota

A disk quota is a limit set by a system administrator that restricts certain aspects of file system usage on modern operating systems.

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DistroWatch is a website which provides news, popularity rankings, and other general information about various Linux distributions as well as other free software/open source Unix-like operating systems such as OpenSolaris, MINIX and BSD.

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DragonFly BSD

DragonFly BSD is a free and open source Unix-like operating system created as a fork of FreeBSD 4.8.

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Electric current

An electric current is a flow of electric charge.

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Endianness is the ordering or sequencing of bytes of a word of digital data in computer memory storage or during transmission.

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Error recovery control

In computing, error recovery control (ERC) (Western Digital: time-limited error recovery (TLER), Samsung/Hitachi: command completion time limit (CCTL)) is a feature of hard disks which allow a system administrator to configure the amount of time a drive's firmware is allowed to spend recovering from a read or write error.

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The exbibyte is a multiple of the unit byte for digital information.

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The ext4 or fourth extended filesystem is a journaling file system for Linux, developed as the successor to ext3.

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Extended file system

The extended file system, or ext, was implemented in April 1992 as the first file system created specifically for the Linux kernel.

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File system

In computing, a file system (or filesystem) is used to control how data is stored and retrieved.

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Filesystem in Userspace

Filesystem in Userspace (FUSE) is an operating system mechanism for Unix-like computer operating systems that lets non-privileged users create their own file systems without editing kernel code.

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In electronic systems and computing, firmware is a type of software that provides control, monitoring and data manipulation of engineered products and systems.

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Fletcher's checksum

The Fletcher checksum is an algorithm for computing a position-dependent checksum devised by John G. Fletcher (1934-2012) at Lawrence Livermore Labs in the late 1970s.

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Fork (software development)

In software engineering, a project fork happens when developers take a copy of source code from one software package and start independent development on it, creating a distinct and separate piece of software.

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Free and open-source software

Free and open-source software (FOSS) is computer software that can be classified as both free software and open-source software.

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FreeBSD is a free Unix-like operating system descended from Research Unix via the Berkeley Software Distribution (BSD).

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FreeNAS is a free and open-source software network-attached storage (NAS) system based on FreeBSD and the OpenZFS file system.

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The system utility fsck (for "file system consistency check") is a tool for checking the consistency of a file system in Unix and Unix-like operating systems, such as Linux and OS X.

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Geli (software)

geli is a block device-layer disk encryption system written for FreeBSD, introduced in version 6.0.

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GEOM is the main storage framework for the FreeBSD operating system.

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GitHub is a Web-based Git repository hosting service.

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A gnome is a diminutive spirit in Renaissance magic and alchemy, first introduced by Paracelsus in the 16th century and later adopted by more recent authors including those of modern fantasy literature.

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GNU General Public License

The GNU General Public License (GNU GPL or GPL) is the most widely used free software license, which guarantees end users (individuals, organizations, companies) the freedoms to run, study, share (copy), and modify the software.

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GNU GRUB (short for GNU GRand Unified Bootloader) is a boot loader package from the GNU Project.

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GNU variants

GNU variants is a term used by the Free Software Foundation to refer to operating systems which use GNU C Library, with application software and system libraries (in other words, the core userland) from GNU.

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Google Summer of Code

The Google Summer of Code (GSoC) is an international annual program, first held from May to August 2005, in which Google awards stipends (of US$5,500) to all students who successfully complete a requested free and open-source software coding project during the summer.

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Graphical user interface

In computer science, a graphical user interface or GUI, pronounced ("gooey") is a type of interface that allows users to interact with electronic devices through graphical icons and visual indicators such as secondary notation, as opposed to text-based interfaces, typed command labels or text navigation.

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gzip is a file format and a software application used for file compression and decompression.

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HAMMER is a high-availability 64-bit file system developed by Matthew Dillon for DragonFly BSD using B-trees.

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Host adapter

In computer hardware, a host controller, host adapter, or host bus adapter (HBA) connects a host system (the computer) to other network and storage devices.

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illumos is a free and open-source Unix operating system.

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Intent log

An intent log is a mechanism used to make computer operations more resilient in the event of failures.

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IOPS (Input/Output Operations Per Second, pronounced eye-ops) is a common performance measurement used to benchmark computer storage devices like hard disk drives (HDD), solid state drives (SSD), and storage area networks (SAN).

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In computing, iSCSI is an acronym for Internet Small Computer System Interface, an Internet Protocol (IP)-based storage networking standard for linking data storage facilities.

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iXsystems, Inc. is a privately owned American computer technology company based in San Jose, California that develops, sells and supports computing and storage solutions for small, medium and enterprise business customers.

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Jeff Bonwick

Jeff Bonwick is a Software Engineer, most notable for leading the team that developed the ZFS file system.

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JFS (file system)

Journaled File System or JFS is a 64-bit journaling file system created by IBM.

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Lawrence Livermore National Laboratory

Lawrence Livermore National Laboratory (LLNL) is a federal research facility in Livermore, California, founded by the University of California in 1952.

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Linux (pronounced or, less frequently) is a Unix-like and mostly POSIX-compliant computer operating system (OS) assembled under the model of free and open-source software development and distribution.

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Linux kernel

The Linux kernel is a Unix-like computer operating system kernel.

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List of file systems

The following lists identify, characterize, and link to more thorough information on computer file systems.

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Loadable kernel module

In computing, a loadable kernel module (or LKM) is an object file that contains code to extend the running kernel, or so-called base kernel, of an operating system.

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Log-structured File System (BSD)

The Log-Structured File System (or LFS) is an implementation of a log-structured file system (a concept originally proposed and implemented by John Ousterhout), originally developed for BSD.

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Logical volume management

In computer storage, logical volume management or LVM provides a method of allocating space on mass-storage devices that is more flexible than conventional partitioning schemes.

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Logical Volume Manager (Linux)

In Linux, Logical Volume Manager (LVM) is a device mapper target that provides logical volume management for the Linux kernel.

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LWN.net is a computing webzine with an emphasis on free software and software for Linux and other Unix-like operating systems.

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LZJB is a lossless data compression algorithm invented by Jeff Bonwick to compress crash dumps and data in ZFS.

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Merkle signature scheme

The Merkle signature scheme is a digital signature scheme based on hash trees (also called Merkle trees) and one-time signatures such as the Lamport signature scheme.

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Merkle tree

In cryptography and computer science, a hash tree or Merkle tree is a tree in which every non-leaf node is labelled with the hash of the labels of its children nodes.

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Metadata is "data about data".

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MidnightBSD is a free Unix-like, desktop-oriented operating system based on FreeBSD 6.1.

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NAS4Free is a network-attached storage (NAS) server software with a dedicated management web interface (written in PHP).

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NetApp, Inc., formerly Network Appliance, Inc., is an American computer storage and data management company headquartered in Sunnyvale, California.

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NetBSD is an open-source, Unix-like operating system that descends from Berkeley Software Distribution (BSD), a Research Unix derivative developed at the University of California, Berkeley.

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Netgear, Inc. (stylized, trademarked, and marketed as NETGEAR) is an American global networking company that delivers products to consumers, businesses and service providers.

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Network File System

Network File System (NFS) is a distributed file system protocol originally developed by Sun Microsystems in 1984, allowing a user on a client computer to access files over a network much like local storage is accessed.

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Network-attached storage

Network-attached storage (NAS) is a file-level computer data storage server connected to a computer network providing data access to a heterogeneous group of clients.

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Nexenta Systems

Nexenta Systems, Inc. is a multinational producer of software-defined storage solutions for data storage and backup, headquartered in Santa Clara, California.

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NexentaStor is an OpenSolaris or more recently Illumos distribution optimized for virtualization, storage area networks, network-attached storage, and iSCSI or Fibre Channel applications employing the ZFS file system.

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NILFS (New Implementation of a Log-structured File System) is a log-structured file system implementation for the Linux kernel.

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Non-RAID drive architectures

The most widespread standard for configuring multiple hard drives is RAID (Redundant Array of Inexpensive/Independent Disks), which comes in a number of standard configurations and non-standard configurations.

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NTFS (New Technology File System) is a proprietary file system developed by Microsoft.

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Object model

In computing, object model has two related but distinct meanings.

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Open-source software

Open-source software (OSS) is computer software with its source code made available with a license in which the copyright holder provides the rights to study, change, and distribute the software to anyone and for any purpose.

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OpenIndiana is a free and open-source, Unix operating system derived from OpenSolaris.

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OpenSolaris was an open source computer operating system based on Solaris created by Sun Microsystems.

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The OpenZFS is an umbrella project aimed at bringing together individuals and companies that use the ZFS file system and work on its improvements, aiming as well at making ZFS more widely used and developed in a true open-source manner.

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Oracle Corporation

The Oracle Corporation is an American global computer technology corporation, headquartered in Redwood City, California.

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OS X (pronounced; originally Mac OS X) is a series of Unix-based graphical interface operating systems (OS) developed and marketed by Apple Inc. It is designed to run on Macintosh computers, having been pre-installed on all Macs since 2002.

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OS X Server

OS X Server, formerly Mac OS X Server, was a separately sold Unix server operating system from Apple Inc. architecturally identical to its desktop counterpart OS X—with additional server programs and management and administration tools.

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OSv (stylized OSv) is a cloud computing focused computer operating system released on September 16, 2013.

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Page cache

In computing, a page cache, sometimes also called disk cache, is a transparent cache for the pages originating from a secondary storage device such as a hard disk drive (HDD).

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PC-BSD or PCBSD, is a trademarked Unix-like, desktop-oriented operating system built upon the most recent releases of FreeBSD.

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Phoronix is a technology website that offers insights regarding the development of the Linux kernel, product reviews, interviews, and news regarding free and open-source software by monitoring the Linux kernel mailing list or interviews.

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POSIX, an acronym for Portable Operating System Interface, is a family of standards specified by the IEEE Computer Society for maintaining compatibility between operating systems.

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Prentice Hall

Prentice Hall is a major educational publisher owned by Pearson PLC.

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RAID (originally redundant array of inexpensive disks, now commonly redundant array of independent disks) is a data storage virtualization technology that combines multiple physical disk drive components into a single logical unit for the purposes of data redundancy, performance improvement, or both.

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In computer science, read-modify-write is a class of atomic operations (such as test-and-set, fetch-and-add, and compare-and-swap) that both read a memory location and write a new value into it simultaneously, either with a completely new value or some function of the previous value.

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Resilient File System (ReFS), codenamed "Protogon", is a Microsoft proprietary file system introduced with Windows Server 2012 with the intent of becoming the "next generation" file system after NTFS.

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Reiser4 is a computer file system, successor to the ReiserFS file system, developed from scratch by Namesys and sponsored by DARPA as well as Linspire.

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Root directory

In a computer file system, and primarily used in the Unix and Unix-like operating systems, the root directory is the first or top-most directory in a hierarchy.

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Samba (software)

Samba is a free software re-implementation of the SMB/CIFS networking protocol, and was originally developed by Andrew Tridgell.

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SchilliX is an OpenSolaris-based live CD and distribution.

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Server Message Block

In computer networking, Server Message Block (SMB), one version of which was also known as Common Internet File System (CIFS), operates as an application-layer network protocol mainly used for providing shared access to files, printers, and serial ports and miscellaneous communications between nodes on a network.

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SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the NSA (U.S. National Security Agency).

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Small office/home office

Small office/home office (or single office/home office; SOHO) refers to the category of business or cottage industry that involves from 1 to 10 workers.

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Snapshot (computer storage)

In computer systems, a snapshot is the state of a system at a particular point in time.

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Solaris (operating system)

Solaris is a Unix operating system originally developed by Sun Microsystems.

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Solid-state drive

A solid-state drive (SSD) (also known as a solid-state disk though it contains no actual disk, nor a drive motor to spin a disk) is a solid-state storage device that uses integrated circuit assemblies as memory to store data persistently.

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SPARC (from "scalable processor architecture") is a RISC instruction set architecture (ISA) developed by Sun Microsystems and introduced in mid-1987.

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Standard RAID levels

In computer storage, the standard RAID levels comprise a basic set of RAID configurations that employ the techniques of striping, mirroring, or parity to create large reliable data stores from multiple general-purpose computer hard disk drives (HDDs).

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STec, Inc.

sTec is a computer data storage technology company headquartered in California,Bloomberg BusinessWeek.

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Sun Microsystems

Sun Microsystems, Inc. was a company that sold:computers, computer components,:computer software, and:information technology services and that created the Java programming language, Solaris Unix and the Network File System (NFS).

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Sun Open Storage

Sun Open Storage was an open source computer data storage platform developed by Sun Microsystems.

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The Register

The Register (nicknamed El Reg or The Reg) is a British technology news and opinion website co-founded in 1994 by Mike Magee, John Lettice and Ross Alderson.

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Transaction processing

In computer science, transaction processing is information processing that is divided into individual, indivisible operations called transactions.

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TrueNAS is an enterprise computer data storage appliance based on the FreeNAS operating system and the OpenZFS file system manufactured by iXsystems of San Jose, California.

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UB may refer to.

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Unicode is a computing industry standard for the consistent encoding, representation, and handling of text expressed in most of the world's writing systems.

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Unix File System

The Unix file system (UFS; also called the Berkeley Fast File System, the BSD Fast File System or FFS) is a file system used by many Unix and Unix-like operating systems.

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User space

A modern computer operating system usually segregates virtual memory into kernel space and user space.

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Veritas File System

The VERITAS File System (or VxFS; called JFS and OnlineJFS in HP-UX) is an extent-based file system.

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Veritas Volume Manager

The Veritas Volume Manager, VVM or VxVM is a proprietary logical volume manager from Veritas (now part of Symantec).

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Versioning file system

A versioning file system is any computer file system which allows a computer file to exist in several versions at the same time.

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Virtual device

A virtual device in Unix is a file such as:/dev/null or:/dev/urandom, that is treated as a device, as far as user level software is concerned, but is generated by the kernel without reference to hardware.

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Volume (computing)

In the context of computer operating systems, a volume or logical drive is a single accessible storage area with a single file system, typically (though not necessarily) resident on a single partition of a hard disk.

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Write Anywhere File Layout

The Write Anywhere File Layout (WAFL) is a file layout that supports large, high-performance RAID arrays, quick restarts without lengthy consistency checks in the event of a crash or power failure, and growing the filesystems size quickly.

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x86 is a family of backward compatible instruction set architectures based on the Intel 8086 CPU and its Intel 8088 variant.

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XFS is a high-performance 64-bit journaling file system created by Silicon Graphics, Inc (SGI) in 1993.

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ZDNet is a business technology news website published by CBS Interactive, along with TechRepublic and SmartPlanet.

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The zebibyte is a multiple of the unit byte for digital information.

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ZFS is a combined file system and logical volume manager designed by Sun Microsystems.

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While there are currently no mainstream general-purpose processors built to operate on 128-bit integers or addresses, a number of processors do have specialized ways to operate on 128-bit chunks of data.

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Redirects here:

FUSE ZFS port for Linux, L2ARC, L2arc, MacZFS, Native ZFS Linux port, O3X, OpenZFS on OS X, RAID-Z, RAID-Z1, RAID-Z2, RAID-Z3, Z filesystem, ZFS on Linux, ZFS release history, Zetabyte File System, Zettabyte File System, Zfs.


[1] https://en.wikipedia.org/wiki/ZFS

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