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Index ZFS

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

209 relations: Access control list, Adaptive replacement cache, Algorithm, Apple File System, Apple Filing Protocol, Apple Inc., Ars Technica, ASCII, Backronym, Backup, BeleniX, BLAKE (hash function), Block (data storage), Block-level storage, Bradley M. Kuhn, Btrfs, Cache (computing), Canonical (company), CAS latency, Character encoding, Checksum, Chipset, Cloning, Cloud storage, Clustered file system, Code name, Common Development and Distribution License, Comparison of file systems, Computer hardware, Copy-on-write, CPU cache, Crash (computing), Cryptographic hash function, Data compression, Data compression ratio, Data corruption, Data deduplication, Data degradation, Data in transit, Data Integrity Field, Data redundancy, Data scrubbing, Data striping, Database, Debian, Debian GNU/kFreeBSD, Derivative work, Device driver, Device file, Directory (computing), ..., Disk array controller, Disk formatting, Disk mirroring, Disk partitioning, Disk quota, DistroWatch, DragonFly BSD, Dyson (operating system), ECC memory, Electric current, Endianness, Error detection and correction, Error recovery control, Exbibyte, Ext4, Extended file system, Fan-out, Fibre Channel, File system, Filesystem in Userspace, Firmware, Fletcher's checksum, Fork (software development), Free and open-source software, Free Software Foundation, FreeBSD, FreeNAS, Fsck, Geli (software), Gentoo Linux, GEOM, Gigabyte, GitHub, GNU General Public License, GNU GRUB, Google Search, Google Summer of Code, Gzip, HAMMER, Hard disk drive, High availability, High- and low-level, Host adapter, Illumos, Inheritance, Input/output, Intel Matrix RAID, Intent log, IOPS, ISCSI, IXsystems, Jeff Bonwick, JFS (file system), Journaling file system, Karen Sandler, Lawrence Livermore National Laboratory, Linux, Linux distribution, List of file systems, Loadable kernel module, Log-structured File System (BSD), Logical disk, Logical volume management, Logical Volume Manager (Linux), Lookup table, LWN.net, LZ4 (compression algorithm), LZJB, MacOS, MacOS Server, Merkle signature scheme, Merkle tree, Metadata, Microsoft Windows, MidnightBSD, NAS4Free, Nesting (computing), NetApp, NetBSD, Netgear, Network delay, Network File System, Network-attached storage, Nexenta Systems, NexentaStor, NILFS, Non-RAID drive architectures, NTFS, Object model, On the fly, Online and offline, Open-source model, Open-source software, OpenIndiana, OpenSolaris, OpenZFS, Operating system, Oracle Corporation, OSv, Page cache, Parity bit, PfSense, Phoronix, POSIX, Prentice Hall, Proprietary software, RAID, Random-access memory, Ransomware, Read-modify-write, Redundancy (engineering), ReFS, Reiser4, Replication (computing), Router (computing), Samba (software), Secure Digital, Server Message Block, SHA-2, Slackware, Small office/home office, SmartOS, Snapshot (computer storage), Software Freedom Law Center, Software release life cycle, Solaris (operating system), Solid-state drive, SPARC, Standard RAID levels, STec, Inc., Storage area network, Sun Microsystems, Sun Open Storage, The Register, Thrashing (computer science), Throughput, Timeout (computing), Transaction processing, TrueOS, UB, Ubuntu (operating system), Unicode, Unix File System, Unix-like, User space, Veritas File System, Veritas Volume Manager, Versioning file system, VMware ESXi, Volume (computing), Write Anywhere File Layout, X86, XFS, Yobibyte, ZDNet, Zebibyte, Zettabyte, ZFS, 128-bit. Expand index (159 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).

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In mathematics and computer science, an algorithm is an unambiguous specification of how to solve a class of problems.

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Apple File System

Apple File System (APFS) is a proprietary file system for macOS High Sierra and later, iOS 10.3 and later, tvOS 10.2 and later, and watchOS 3.2 and later, developed and deployed by Apple Inc. It aims to fix core problems of HFS+ (also called Mac OS Extended), APFS's predecessor on these operating systems.

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Apple Filing Protocol

The Apple Filing Protocol (AFP), formerly AppleTalk Filing Protocol, is a proprietary network protocol, and part of the Apple File Service (AFS), that offers file services for macOS and the classic Mac OS.

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Apple Inc.

Apple Inc. 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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Ars Technica

Ars Technica (a Latin-derived term that the site translates as the "art of technology") is a website covering news and opinions in technology, science, politics, and society, created by Ken Fisher and Jon Stokes in 1998.

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ASCII, abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication.

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A backronym, or bacronym, is a constructed phrase that purports to be the source of a word that is an acronym.

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In information technology, a backup, or the process of backing up, refers to the copying into an archive file of computer data so it may be used to restore the original after a data loss event.

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

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BLAKE (hash function)

BLAKE and BLAKE2 are cryptographic hash functions based on Dan Bernstein's ChaCha stream cipher, but a permuted copy of the input block, XORed with some round constants, is added before each ChaCha round.

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Block (data storage)

In computing (specifically data transmission and data storage), a block, sometimes called a physical record, is a sequence of bytes or bits, usually containing some whole number of records, having a maximum length, a block size.

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Block-level storage

Block-level storage is a concept in cloud-hosted data persistence where cloud services emulate the behaviour of a traditional block device, such as a physical hard drive.

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Bradley M. Kuhn

Bradley M. Kuhn (born 1973) is a free software activist from the United States.

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Btrfs (pronounced as "butter fuss", "better F S", "butter F S", "b-tree F S", or simply by spelling it out) is a file system based on the copy-on-write (COW) principle, initially designed at Oracle Corporation for use in Linux.

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Cache (computing)

In computing, a cache, is a hardware or software component that stores data so future requests for that data can be served faster; the data stored in a cache might be the result of an earlier computation, or the duplicate of data stored elsewhere.

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Canonical (company)

Canonical Ltd. is a UK-based privately held computer software company founded and funded by South African entrepreneur Mark Shuttleworth to market commercial support and related services for Ubuntu Linux and related projects.

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CAS latency

Column Access Strobe (CAS) latency, or CL, is the delay time between the moment a memory controller tells the memory module to access a particular memory column on a RAM module, and the moment the data from the given array location is available on the module's output pins.

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Character encoding

Character encoding is used to represent a repertoire of characters by some kind of encoding system.

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A checksum is a small-sized datum derived 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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In a computer system, a chipset is a set of electronic components in an integrated circuit known as a "Data Flow Management System" that manages the data flow between the processor, memory and peripherals.

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Cloning is the process of producing genetically identical individuals of an organism either naturally or artificially.

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Cloud storage

Cloud storage is a model of computer data storage in which the digital data is stored in logical pools.

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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 and open-source 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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Computer hardware

Computer hardware includes the physical parts or components of a computer, such as the central processing unit, monitor, keyboard, computer data storage, graphic card, sound card and motherboard.

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Copy-on-write (CoW or COW), sometimes referred to as implicit sharing or shadowing, is a resource-management technique used in computer programming to efficiently implement a "duplicate" or "copy" operation on modifiable resources.

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CPU cache

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

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Crash (computing)

In computing, a crash (or system crash) occurs when a computer program, such as a software application or an operating system, stops functioning properly and exits.

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Cryptographic hash function

A cryptographic hash function is a special class of hash function that has certain properties which make it suitable for use in cryptography.

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Data compression

In 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 is the gradual corruption of computer data due to an accumulation of non-critical failures in a data storage device.

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Data in transit

Data in transit is defined into two categories, information that flows over the public or untrusted network such as the internet and data which flows in the confines of a private network such as a corporate or enterprise Local Area Network (LAN).

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Data Integrity Field

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

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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, then correct detected errors using redundant data in the 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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A database is an organized collection of data, stored and accessed electronically.

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Debian is a Unix-like computer operating system that is composed entirely of free software, and packaged by a group of individuals participating in the Debian Project.

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Debian GNU/kFreeBSD

Debian GNU/kFreeBSD is a discontinued GNU variant released by the Debian project.

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Derivative work

In copyright law, a derivative work is an expressive creation that includes major copyright-protected elements of an original, previously created first work (the underlying work).

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Device driver

In computing, a device driver is a computer program that operates or controls a particular type of device that is attached to a computer.

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Device file

In Unix-like operating systems, a device file or special file is an interface to a device driver that appears in a file system as if it were an ordinary file.

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Directory (computing)

In computing, a directory is a file system cataloging structure which contains references to other computer files, and possibly other directories.

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Disk array controller

A disk array controller is a device which manages the physical disk drives and presents them to the computer as logical units.

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Disk formatting

Disk formatting is the process of preparing a data storage device such as a hard disk drive, solid-state drive, floppy disk or USB flash drive for initial use.

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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 or disk slicing is the creation of one or more regions on a hard disk or other secondary storage, so that an operating system can manage information in each region separately.

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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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Dyson (operating system)

Dyson is a Unix general-purpose operating system derived from Debian using the illumos kernel, libc, and SMF init system.

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ECC memory

Error-correcting code memory (ECC memory) is a type of computer data storage that can detect and correct the most common kinds of internal data corruption.

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Electric current

An electric current is a flow of electric charge.

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Endianness refers to the sequential order in which bytes are arranged into larger numerical values when stored in memory or when transmitted over digital links.

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Error detection and correction

In information theory and coding theory with applications in computer science and telecommunication, error detection and correction or error control are techniques that enable reliable delivery of digital data over unreliable communication channels.

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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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In digital electronics, the fan-out of a logic gate output is the number of gate inputs it can drive.

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Fibre Channel

Fibre Channel, or FC, is a high-speed network technology (commonly running at 1, 2, 4, 8, 16, 32, and 128 gigabit per second rates) providing in-order, lossless delivery of raw block data, primarily used to connect computer data storage to servers.

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File system

In computing, a file system or filesystem controls how data is stored and retrieved.

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Filesystem in Userspace

Filesystem in Userspace (FUSE) is a software interface 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 specific class of computer software that provides the low-level control for the device's specific hardware.

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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 software that can be classified as both free software and open-source software.

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Free Software Foundation

The Free Software Foundation (FSF) is a 501(c)(3) non-profit organization founded by Richard Stallman on 4 October 1985 to support the free software movement, which promotes the universal freedom to study, distribute, create, and modify computer software, with the organization's preference for software being distributed under copyleft ("share alike") terms, such as with its own GNU General Public License.

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

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The system utility fsck (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, macOS, and FreeBSD.

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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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Gentoo Linux

Gentoo Linux (pronounced) is a Linux distribution built using the Portage package management system.

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

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

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GitHub Inc. is a web-based hosting service for version control using Git.

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GNU General Public License

The GNU General Public License (GNU GPL or GPL) is a widely used free software license, which guarantees end users the freedom to run, study, share 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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Google Search

Google Search, commonly referred to as Google Web Search or simply Google, is a web search engine developed by Google.

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Google Summer of Code

The Google Summer of Code, often abbreviated to GSoC, is an international annual program, first held from May to August 2005, in which Google awards stipends, which depends on the purchasing power parity of the country the student's university belongs to, to all students who successfully complete a requested free and open-source software coding project during the summer.

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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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Hard disk drive

A hard disk drive (HDD), hard disk, hard drive or fixed disk is an electromechanical data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks (platters) coated with magnetic material.

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High availability

High availability is a characteristic of a system, which aims to ensure an agreed level of operational performance, usually uptime, for a higher than normal period.

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High- and low-level

High-level and low-level, as technical terms, are used to classify, describe and point to specific goals of a systematic operation; and are applied in a wide range of contexts, such as, for instance, in domains as widely varied as computer science and business administration.

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Host adapter

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

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

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Inheritance is the practice of passing on property, titles, debts, rights, and obligations upon the death of an individual.

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In computing, input/output or I/O (or, informally, io or IO) is the communication between an information processing system, such as a computer, and the outside world, possibly a human or another information processing system.

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Intel Matrix RAID

Matrix RAID is a computer storage technology marketed by Intel.

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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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Input/output operations per second (IOPS, pronounced eye-ops) is an input/output performance measurement used to characterize 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 Systems 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 products and services.

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Jeff Bonwick

Jeff Bonwick invented and led development of the ZFS file system, which was used in Oracle Corporation's ZFS storage products as well as startups including Nexenta, Delphix, Joyent, and Datto, Inc.

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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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Journaling file system

A journaling file system is a file system that keeps track of changes not yet committed to the file system's main part by recording the intentions of such changes in a data structure known as a "journal", which is usually a circular log.

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Karen Sandler

Karen Sandler is the executive director of the Software Freedom Conservancy, former executive director of the GNOME Foundation, an attorney, and former general counsel of the Software Freedom Law Center.

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Lawrence Livermore National Laboratory

Lawrence Livermore National Laboratory (LLNL) is an American federal research facility in Livermore, California, United States, founded by the University of California, Berkeley in 1952.

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Linux is a family of free and open-source software operating systems built around the Linux kernel.

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Linux distribution

A Linux distribution (often abbreviated as distro) is an operating system made from a software collection, which is based upon the Linux kernel and, often, a package management system.

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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 (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 disk

A logical disk, logical volume or virtual disk (VD or vdisk for short) is a virtual device that provides an area of usable storage capacity on one or more physical disk drive(s) in a computer system.

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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 to store volumes.

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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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Lookup table

In computer science, a lookup table is an array that replaces runtime computation with a simpler array indexing operation.

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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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LZ4 (compression algorithm)

LZ4 is a lossless data compression algorithm that is focused on compression and decompression speed.

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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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macOS (previously and later) is a series of graphical operating systems developed and marketed by Apple Inc. since 2001.

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MacOS Server

macOS Server, formerly Mac OS X Server and OS X Server, is a separately sold operating system add-on which provides additional server programs along with management and administration tools for macOS.

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Merkle signature scheme

In hash-based cryptography, 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 leaf node is labelled with the hash of a data block and every non-leaf node is labelled with the cryptographic hash of the labels of its child nodes.

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Metadata is "data that provides information about other data".

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Microsoft Windows

Microsoft Windows is a group of several graphical operating system families, all of which are developed, marketed, and sold by Microsoft.

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MidnightBSD is a free Unix-like, desktop-oriented operating system originally forked from FreeBSD 6.1, and periodically updated with code and drivers from later FreeBSD releases.

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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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Nesting (computing)

In computing science and informatics, nesting is where information is organized in layers, or where objects contain other similar objects.

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NetApp, Inc. is a hybrid cloud data services company headquartered in Sunnyvale, California.

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NetBSD is a free and 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 NETGEAR) is a multinational computer networking company based in San Jose, California, with offices in about 25 other countries.

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Network delay

Network delay is an important design and performance characteristic of a computer network or telecommunications network.

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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 computer 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 company that markets computer software for data storage and backup, headquartered in San Jose, 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 or NILFS2 (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 disk 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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On the fly

On the fly is a phrase used to describe something that is being changed while the process that the change affects is ongoing.

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Online and offline

In computer technology and telecommunications, online indicates a state of connectivity, and offline indicates a disconnected state.

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Open-source model

The open-source model is a decentralized software-development model that encourages open collaboration.

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Open-source software

Open-source software (OSS) is a type of computer software whose source code is released under a license in which the copyright holder grants users 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 and based on illumos.

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OpenSolaris is a discontinued, open source computer operating system based on Solaris created by Sun Microsystems.

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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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Operating system

An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs.

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Oracle Corporation

Oracle Corporation is an American multinational computer technology corporation, headquartered in Redwood Shores, California.

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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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Parity bit

A parity bit, or check bit, is a bit added to a string of binary code to ensure that the total number of 1-bits in the string is even or odd.

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pfSense is an open source firewall/router computer software distribution based on 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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The Portable Operating System Interface (POSIX) 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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Proprietary software

Proprietary software is non-free computer software for which the software's publisher or another person retains intellectual property rights—usually copyright of the source code, but sometimes patent rights.

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RAID (Redundant Array of Independent Disks, originally Redundant Array of Inexpensive Disks) is a data storage virtualization technology that combines multiple physical disk drive components into one or more logical units for the purposes of data redundancy, performance improvement, or both.

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Random-access memory

Random-access memory (RAM) is a form of computer data storage that stores data and machine code currently being used.

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Ransomware is a type of malicious software from cryptovirology that threatens to publish the victim's data or perpetually block access to it unless a ransom is paid.

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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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Redundancy (engineering)

In engineering, redundancy is the duplication of critical components or functions of a system with the intention of increasing reliability of the system, usually in the form of a backup or fail-safe, or to improve actual system performance, such as in the case of GNSS receivers, or multi-threaded computer processing.

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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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Replication (computing)

Replication in computing involves sharing information so as to ensure consistency between redundant resources, such as software or hardware components, to improve reliability, fault-tolerance, or accessibility.

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Router (computing)

A router is a networking device that forwards data packets between computer networks.

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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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Secure Digital

Secure Digital (SD) is a non-volatile memory card format developed by the SD Card Association (SDA) for use in portable devices.

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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 United States National Security Agency (NSA).

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Slackware is a Linux distribution created by Patrick Volkerding in 1993.

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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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SmartOS is a free and open-source SVR4 hypervisor, based on the UNIX operating system that combines OpenSolaris technology with Linux's KVM virtualization.

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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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Software Freedom Law Center

The Software Freedom Law Center (SFLC) is an organization that provides pro bono legal representation and related services to not-for-profit developers of free software/open source software.

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Software release life cycle

A software release life cycle is the sum of the stages of development and maturity for a piece of computer software: ranging from its initial development to its eventual release, and including updated versions of the released version to help improve software or fix software bugs still present in the software.

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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) is a solid-state storage device that uses integrated circuit assemblies as memory to store data persistently.

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SPARC, for Scalable Processor Architecture, is a reduced instruction set computing (RISC) instruction set architecture (ISA) originally developed by Sun Microsystems.

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Standard RAID levels

In computer storage, the standard RAID levels comprise a basic set of RAID (redundant array of independent disks) 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 an American computer data storage technology company headquartered in California,Bloomberg BusinessWeek.

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Storage area network

A storage area network (SAN) is a Computer network which provides access to consolidated, block level data storage.

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Sun Microsystems

Sun Microsystems, Inc. was an American company that sold computers, computer components, software, and information technology services and created the Java programming language, the Solaris operating system, ZFS, the Network File System (NFS), and SPARC.

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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) is a British technology news and opinion website co-founded in 1994 by Mike Magee, John Lettice and Ross Alderson.

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Thrashing (computer science)

In computer science, thrashing occurs when a computer's virtual memory resources become saturated, leading to a constant state of paging (rapidly exchanging data in memory for data on disk), to the exclusion of most application-level processing.

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In general terms, throughput is the maximum rate of production or the maximum rate at which something can be processed.

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Timeout (computing)

In telecommunications and related engineering (including computer networking and programming), the term timeout or time-out has several meanings, including.

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Transaction processing

Transaction processing is information processing in computer science that is divided into individual, indivisible operations called transactions.

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TrueOS (formerly PC-BSD or PCBSD) is a Unix-like, desktop-oriented operating system built upon the most recent releases of FreeBSD-CURRENT.

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UB or Ub may refer to.

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Ubuntu (operating system)

Ubuntu (stylized as ubuntu) is a free and open source operating system and Linux distribution based on Debian.

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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 supported by many Unix and Unix-like operating systems.

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A Unix-like (sometimes referred to as UN*X or *nix) operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification.

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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 (which was part of Symantec until January 2016).

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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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VMware ESXi

VMware ESXi (formerly ESX) is an enterprise-class, type-1 hypervisor developed by VMware for deploying and serving virtual computers.

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Volume (computing)

In computer data storage, 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 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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The yobibyte is a multiple of the unit byte for digital information.

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

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

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The zettabyte 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 and now owned by Oracle Corporation.

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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-Z1, RAID-Z2, RAID-Z3, RAIDZ, 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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