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Network-attached storage (NAS)

Terms related to network-attached storage (NAS), including hard disk storage definitions and words and phrases about file-level computer data storage.

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  • base address - A base address is a unique location in primary storage (or main memory) that serves as a reference point for other memory locations called absolute addresses.
  • CIFS (Common Internet File System) - CIFS (Common Internet File System) is a protocol that gained popularity around the year 2000, as vendors worked to establish an Internet Protocol-based file-sharing protocol.
  • client-server model (client-server architecture) - Client-server is a relationship in which one program (the client) requests a service or resource from another program (the server).
  • cloud storage - Cloud storage is a service model in which data is transmitted and stored on remote storage systems, where it is maintained, managed, backed up and made available to users over a network (typically the internet).
  • cloud storage API - A cloud storage API is an application program interface that connects a locally-based application to a cloud-based storage system, so that a user can send data to it and access and work with data stored in it.
  • cloud storage gateway - A cloud storage gateway is a hardware- or software-based appliance that serves as a bridge between local applications and remote cloud-based storage.
  • cluster - In a computer system, a cluster is a group of servers and other resources that act like a single system and enable high availability and, in some cases, load balancing and parallel processing.
  • clustered storage - Clustered storage is the use of two or more storage servers working together to increase performance, capacity, or reliability.
  • cold backup (offline backup) - A cold backup, also called an offline backup, is a database backup during which the database is offline and not accessible to update.
  • DHCP (Dynamic Host Configuration Protocol) - DHCP (Dynamic Host Configuration Protocol) is a network management protocol used to dynamically assign an Internet Protocol (IP) address to any device, or node, on a network so they can communicate using IP.
  • direct-attached storage (DAS) - Direct-attached storage (DAS) is computer storage that is connected to one computer and not accessible to other computers.
  • EIDE (Enhanced Integrated Drive Electronics) - Enhanced (sometimes "Expanded") IDE is a standard electronic interface between your computer and its mass storage drives.
  • Ethernet hard drive - An Ethernet hard drive is an external hard drive with a direct Ethernet interface to simplify storage networks, data centers and cloud operations.
  • external hard drive - An external hard drive is a portable storage device that can be attached to a computer through a USB or Firewire connection, or wirelessly.
  • external storage device - An external storage device, also referred to as auxiliary storage and secondary storage, is a device that contains all the addressable data storage that is not inside a computer's main storage or memory.
  • fault-tolerant - Fault-tolerant technology is a capability of a computer system, electronic system or network to deliver uninterrupted service, despite one or more of its components failing.
  • FDDI (Fiber Distributed Data Interface) - FDDI (Fiber Distributed Data Interface) is a network standard that uses fiber optic connections in a local area network (LAN) that can extend in range up to 200 kilometers (124 miles).
  • Fibre Channel - Fibre Channel is a high-speed networking technology primarily used for transmitting data among data centers, computer servers, switches and storage at data rates of up to 128 Gbps.
  • file storage - File storage stores data in a hierarchical structure, usually in a NAS system.
  • FireWire - FireWire is Apple Computer's version of a standard, IEEE 1394, High Performance Serial Bus, for connecting devices to your personal computer.
  • FreeNAS Project - The FreeNAS storage operating system is compatible with most major protocols and storage hardware and provides file sharing in a NAS environment.
  • FTP (File Transfer Protocol) - FTP (File Transfer Protocol) is a network protocol for transmitting files between computers over TCP/IP connections.
  • Gigabit Ethernet (GbE) - Gigabit Ethernet (GbE), a transmission technology based on the Ethernet frame format and protocol used in local area networks (LANs), provides a data rate of 1 billion bits per second, or 1 gigabit (Gb).
  • iSCSI (Internet Small Computer System Interface) - ISCSI is a transport layer protocol that describes how Small Computer System Interface (SCSI) packets should be transported over a TCP/IP network.
  • iSCSI target (Internet Small Computer System Interface target) - ISCSI target is a storage option in an Internet Small Computer System Interface server that manages connections between servers that need access to the targets and the iSCSI storage subsystem in a storage area network.
  • LUN masking - LUN masking is a further constraint added to zoning, subdividing access to the port so that only LUNs authorized to access a specific server can access the corresponding port.
  • mount point - Whether it comes from a partition on the same drive, a new hard drive, media inserted into an optical drive or some form of flash memory, any file system must be mounted before it can be displayed and its file system read.
  • multiprotocol storage - Multiprotocol storage, also known as unified or federated storage, supports protocols traditionally associated with SAN block-based and NAS file-based storage in a single device.
  • NAS enclosure (network-attached storage enclosure) - NAS enclosures provide shared storage to all users connected to a network, and vary in models appropriate for home offices to enterprises.
  • NAS filer (network-attached storage filer) - NAS filers add scalable, expandable storage for file-serving purposes in data sharing, cloud applications, Internet and enterprise networks, in both Fibre Channel SANs and Ethernet LANs.
  • NAS gateway - A NAS gateway is a NAS (network-attached storage) system in which the storage media are externally attached, typically over a Fibre Channel interface.
  • NDMP (Network Data Management Protocol) - NDMP (Network Data Management Protocol) is an open protocol used to control data backup and recovery communications between primary and secondary storage in a heterogeneous network environment.
  • Network File System (NFS) - The Network File System (NFS) is a client/server application that lets a computer user view and optionally store and update files on a remote computer as though they were on the user's own computer.
  • network-attached storage (NAS) - Network-attached storage (NAS) is dedicated file storage that enables multiple users and heterogeneous client devices to retrieve data from centralized disk capacity.
  • Network-attached storage (NAS) vocabulary quiz - How much do you know about the essential terminology related to network-attached storage (NAS)? Take our quiz to find out.
  • Panasas - Panasas is a scale-out NAS (network-attached storage) vendor that produces hardware and software for demanding technical and enterprise environments.
  • physical address - A physical address is a binary number in the form of logical high and low states on an address bus that corresponds to a particular cell of primary storage (also called main memory), or to a particular register in a memory-mapped I/O (input/output) device.
  • primary storage (main storage) - Primary storage is the collective methods and technologies used to capture and retain digital information that is in active use and critical for an organization’s operations.
  • QNAP Systems Inc. (Quality Network Appliance Provider Systems Inc.) - QNAP Systems Inc.
  • Qumulo - Qumulo is a Seattle-based storage vendor that specializes in selling its data-aware storage software application called the Qumulo Core.
  • scale-out storage - Scale-out storage is a network-attached storage (NAS) architecture in which the total amount of disk space can be expanded as needed, even if some of the new drives reside in other storage arrays.
  • SCSI (Small Computer System Interface) - Definition: The Small Computer System Interface (SCSI) is a set of parallel interface standards used to attach disk drives and other peripherals to a computer.
  • secondary storage - Secondary storage is persistent storage for noncritical data that doesn't need to be accessed as frequently as data in primary storage or that doesn't have the same performance or availability requirements.
  • serial-attached SCSI (SAS) - Serial-attached SCSI (SAS) is a point-to-point protocol used to transfer digital data between servers and SAS storage devices.
  • server-side flash - Server-side flash is the use of a solid state drive with flash memory in a server.
  • storage filer - A storage filer is a file server designed and programmed for high-volume data storage, backup, and archiving.
  • TCP/IP - TCP/IP stands for Transmission Control Protocol/Internet Protocol and is a suite of communication protocols used to interconnect network devices on the internet.
  • throughput - Throughput is a term used in information technology that indicates how many units of information can be processed in a set amount of time.
  • unified storage (multiprotocol storage) - Unified storage -- sometimes called network unified storage or multiprotocol storage -- is a storage system that makes it possible to run and manage files and applications from a single device.
  • virtual NAS - Virtual NAS is a virtual machine (VM) that acts as a file server for network-attached storage (NAS).
  • virtual storage area network (VSAN) - A virtual storage area network (VSAN) is a logical partition in a physical storage area network (SAN).
  • Western Digital Corporation (WDC) - Western Digital Corporation (often referred to as WDC, Western Digital) is a data storage device manufacturer founded in 1970 and headquartered in San Jose, Calif.
  • What is a SAN? Ultimate storage area network guide - A storage area network (SAN) is a dedicated high-speed network or subnetwork that interconnects and presents shared pools of storage devices to multiple servers.
  • What is failover? - Failover is a backup operational mode in which the functions of a system component (such as a processor, server, network, or database, for example) are assumed by secondary system components when the primary component becomes unavailable through either failure or scheduled down time.
  • Zadara VPSA and ZIOS - Zadara Storage provides block, file or object storage with varying levels of compute and capacity through its ZIOS and VPSA platforms.
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