Storage architecture

Definitions about storage and data management including backup/recovery vocabulary, business intelligence terminology, storage area networks and database management.

1000BASE-T (Gigabit Ethernet) - 1000BASE-T is Gigabit Ethernet -- 1 gigabit is 1,000 megabits per second (Mbps) on copper cables, using four pairs of Category 5 (Cat5) unshielded twisted pair (UTP) to achieve the gigabit data rate.
3D NAND flash - 3D NAND is a type of non-volatile flash memory in which the memory cells are stacked vertically in multiple layers.
3D XPoint - 3D XPoint is memory storage technology jointly developed by Intel and Micron Technology Inc.
Adobe Flash - Adobe Flash is a software platform used to create rich digital content containing animation, graphic effects, streaming video and other interactive elements to deliver engaging user experiences over many platforms, including desktops and mobile devices.
all-flash array (AFA) - An all-flash array (AFA), also known as a solid-state storage disk system or a solid-state array, is an external storage array that supports only flash media for persistent storage.
Amazon Simple Storage Service (Amazon S3) - Amazon Simple Storage Service (Amazon S3) is a scalable, high-speed, web-based cloud storage service.
archive - An archive is a collection of data moved to a repository for long-term retention, to be kept separate for compliance reasons or moved off primary storage media.
asynchronous replication - Asynchronous replication is a store-and-forward approach to backup and data protection.
backup storage device - A backup storage device is used to make copies of data that’'s actively in use.
bit (binary digit) - A bit (binary digit) is the smallest unit of data that a computer can process and store.
blade server - A blade server, sometimes referred to as a high-density server, is a compact device containing a computer used to manage and distribute data in a collection of computers and systems, called a network.
block storage - Block storage is an approach to data storage in which each volume acts as an individual hard drive that is configured by the administrator.
burn-in - Burn-in is a test in which a system or component is made to run for an extended period of time to detect problems.
byte - In most computer systems, a byte is a unit of data that is eight binary digits long.
cache memory - Cache memory, also called CPU memory, is high-speed static random access memory (SRAM) that a computer microprocessor can access more quickly than it can access regular random access memory (RAM).
CD-ROM - A CD-ROM (Compact Disc Read-Only Memory) is a type of compact disc that can only be read, not written to.
CDMA (Code-Division Multiple Access) - CDMA (Code-Division Multiple Access) refers to any of several protocols used in second-generation (2G) and third-generation (3G) wireless communications.
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.
cloud NAS (cloud network attached storage) - Cloud NAS (network attached storage) is remote storage that is accessed over the internet as if it is local.
cloud server - A cloud server is a compute server that has been virtualized, making its resources accessible to users remotely over a network.
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 programming 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 service - A cloud storage service is a business that maintains and manages its customers' data and makes that data accessible over a network, usually the internet.
cluster - Clusters are typically defined as collections or groups of items with similar or different characteristics.
cluster quorum disk - A cluster quorum disk is the storage medium on which the configuration database is stored for a cluster computing network.
clustered network-attached storage (NAS) system - A clustered network-attached storage (NAS) system is a scale-out storage platform made up of multiple NAS nodes networked together into a single cluster.
cold backup (offline backup) - A cold backup is a backup of an offline database.
cold storage - Cold storage is a computer system or mode of operation designed for the retention of inactive data.
commodity hardware - Commodity hardware in computing is computers or components that are readily available, inexpensive and easily interchangeable with other commodity hardware.
compact disc (CD) - A compact disc is a portable storage medium that can record, store and play back audio, video and other data in digital form.
CompactFlash card (CF card) - A CompactFlash card (CF card) is a memory card format developed by SanDisk in 1994 that uses flash memory technology to store data on a very small portable device.
complementary metal-oxide semiconductor (CMOS) - A complementary metal-oxide semiconductor (CMOS) is the semiconductor technology used in most of today's integrated circuits, also known as chips or microchips.
composable infrastructure - Composable infrastructure is a framework that decouples device resources in order to treat them as services.
configuration management database (CMDB) - A configuration management database (CMDB) is a file -- usually in the form of a standardized database -- that contains all relevant information about the hardware and software components used in an organization's IT services and the relationships among those components.
continuous data protection (CDP) - Continuous data protection (CDP), also known as continuous backup, is a backup and recovery storage system in which all the data in an enterprise is backed up whenever any change is made.
converged network adapter (CNA) - A converged network adapter (CNA) is a single network interface device that provides the functionality of both a Fibre Channel (FC) host bus adapter (HBA) and a TCP/IP Ethernet network interface card (NIC).
copy data management (CDM) - Copy data management (CDM) is an approach to reducing storage consumption that involves eliminating the unnecessary duplication of production data.
data archiving - Data archiving moves data that is no longer actively used to a separate storage device for long-term retention.
data availability - Data availability is a term used by computer storage manufacturers and storage service providers to describe how data should be available at a required level of performance in situations ranging from normal through disastrous.
data center capacity planning - Data center capacity planning ensures that an IT organization has enough facility space, power and computing resources to support average and peak workloads.
data mart (datamart) - A data mart is a repository of data that is designed to serve a particular community of knowledge workers.
data protection management (DPM) - Data protection management (DPM) is the administration, monitoring and management of backup processes to ensure backup tasks run on schedule and data is securely backed up and recoverable.
data reduction - Data reduction lowers the amount of capacity required to store data.
dedicated cloud - A dedicated cloud is a single-tenant cloud infrastructure, which essentially acts as an isolated, single-tenant public cloud.
Dell EMC - Dell EMC is an American multinational technology company that offers products and services across all areas of computing, networking and storage.
DHCP (Dynamic Host Configuration Protocol) - DHCP (Dynamic Host Configuration Protocol) is a network management protocol used to dynamically assign an IP address to any device, or node, on a network so it can communicate using IP.
direct access - In computer storage, direct access is the process of reading and writing data on a storage device by going directly to where the data is physically located on the device rather than having to move sequentially from one physical location to the next to find the correct data.
direct access storage device (DASD) - A direct access storage device (DASD) is a type of secondary storage device that supports direct access to the stored data, as opposed to sequential access, which is slower and less efficient.
Direct Memory Access (DMA) - Direct Memory Access (DMA) is a capability provided by some computer bus architectures that enables data to be sent directly from an attached device to the computer's main memory.
direct-attached storage (DAS) - Direct-attached storage (DAS) is a type of storage that is attached directly to a computer without going through a network.
disk array - A disk array, also called a storage array, is a data storage system used for block-based storage, file-based storage or object storage.
disk mirroring (RAID 1) - Disk mirroring, also known as RAID 1, is the replication of data across two or more disks.
distributed file system (DFS) - A distributed file system (DFS) is a file system that enables clients to access file storage from multiple hosts through a computer network as if the user was accessing local storage.
DRBD (Distributed Replicated Block Device) - DRBD (Distributed Replicated Block Device) is a Linux-based software component that facilitates the replacement of shared storage systems by networked mirroring.
ducting (data center cooling) - Ducting is an approach to air management that uses a series of metal or plastic pipes to carry heated or cooled air from one place to another.
EEPROM (electrically erasable programmable read-only memory) - EEPROM (electrically erasable programmable read-only memory) is a user-modifiable ROM.
email archiving - Email archiving is a systematic approach to saving and protecting the data contained in emails to enable fast retrieval.
eMMC (embedded MultiMediaCard) - An embedded MultiMediaCard (eMMC) is a small storage device made up of NAND flash memory and a simple storage controller.
EPROM (erasable programmable read-only memory) - EPROM (erasable programmable read-only memory) is memory that does not lose its data when the power supply is cut off.
exbibyte (EiB) - An exbibyte (EiB) is a unit that measures data capacity.
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.
failover - Failover is a backup operational mode in which the functions of a system component are assumed by a secondary component when the primary becomes unavailable.
failover cluster - In computing, a failover cluster refers to a group of independent servers that work together to maintain high availability of applications and services.
fault tolerance - Fault tolerance is the capability of a system 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).
FDISK - FDISK is a disk utility included in all versions of MS-DOS, Windows and Linux for formatting or partitioning a hard disk drive, or to delete different portions of it.
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.
Fibre Channel (FC) port types - A Fibre Channel port is a hardware pathway into and out of a node that performs data communications over an FC link.
Fibre Channel over Ethernet (FCoE) - Fibre Channel over Ethernet (FcoE) is a storage protocol that enables Fibre Channel (FC) communications to run directly over Ethernet.
Fibre Channel switch (FC switch) - A Fibre Channel (FC) switch is a networking device that's compatible with the FC protocol and designed for use in a dedicated storage area network (SAN).
file server - A file server is a computer responsible for the storage and management of data files so that other computers on the same network can access the files.
flash controller (flash memory controller) - A flash controller is the part of solid-state flash memory that communicates with the host device and manages the flash file system directory.
flash memory - Flash memory, also known as flash storage, is a type of nonvolatile memory that erases data in units called blocks and rewrites data at the byte level.
flash solid-state drive (SSD) - A flash solid-state drive (SSD) is a non-volatile storage device that stores persistent data in flash memory.
flash storage - Flash storage is any type of drive, repository or system that uses flash memory to write and store data for an extended period.
floating gate transistor (FGT) - A floating gate transistor (FGT) is a complementary metal-oxide semiconductor (CMOS) technology capable of holding an electrical charge in a memory device that is used to store data.
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).
gigabyte (GB) - A gigabyte (GB) -- pronounced with two hard Gs -- is a unit of data storage capacity that is roughly equivalent to 1 billion bytes.
green cloud - Green cloud refers to the potential environmental benefits that green IT services delivered over the internet can offer to individual companies and society as a whole.
green networking - Green networking is the practice of selecting energy-efficient networking technologies and products and minimizing resource use whenever possible.
Hadoop as a service (HaaS) - Hadoop as a service (HaaS), also known as Hadoop in the cloud, is a big data analytics framework that stores and analyzes data in the cloud using Hadoop.
hard disk drive (HDD) - A computer hard disk drive (HDD) is a non-volatile data storage device.
HD-DVD (high-definition DVD) - HD-DVD (high-definition DVD) is a defunct high-capacity optical storage medium that was once seen as the successor to the DVD.
HDD form factor (hard disk drive form factor) - HDD form factor (hard disk drive form factor) is the size or geometry of a data storage device equipped with one or more magnetic-coated spinning platters and one or more moving actuator arms with magnetic heads to read and write information.
heartbeat (computing) - In computing, a heartbeat is a program that runs specialized scripts automatically whenever a system is initialized or rebooted.
high availability (HA) - High availability (HA) is the ability of a system to operate continuously without failing for a designated period of time.
holographic storage (holostorage) - Holographic storage is computer storage that uses laser beams to store computer-generated data in three dimensions.
host bus adapter (HBA) - A host bus adapter (HBA) is a circuit board or integrated circuit adapter that connects a host system, such as a server, to a storage or network device.
hot plugging - Hot plugging is the addition of a component to a running computer system without significant interruption to the operation of the system.
hot swap - A hot swap describes the act of removing components from or plugging them into a computer system while the power remains switched on.
hybrid flash array - A hybrid flash array is a solid-state storage system that contains a mix of flash memory drives and hard disk drives.
hybrid hard drive (HHD) - A hybrid hard drive (HHD), sometimes known as a solid-state hybrid drive (SSHD), is a mass storage device that combines a conventional hard disk drive and a NAND flash module.
hyperconverged appliance (HCI appliance) - A hyperconverged appliance (HCI appliance) is a hardware device that provides multiple data center management technologies within a single box.
I/O (input/output) - I/O (input/output), pronounced "eye-oh," describes any operation, program or device that transfers data to or from a computer.
IDE (Integrated Drive Electronics) - IDE (Integrated Drive Electronics) is an electronic interface standard that defines the connection between a bus on a computer's motherboard and the computer's disk storage devices.
information - Information is stimuli that has meaning in some context for its receiver.
IOPS (input/output operations per second) - IOPS measures the maximum number of reads and writes to non-contiguous storage.
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.