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Disk storage system
A disk array is a disk storage system which contains multiple disk drives. It is differentiated from a disk enclosure, in that an array has cache memory
Disk_array
Data storage technology
RAID (Redundant Array of Independent Disks) is an orchestrated approach to computer data storage in which data is written to more than one secondary storage
RAID
Device that manages disk drives
A disk array controller is a device that manages the physical disk drives and presents them to the computer as logical units. It often implements hardware
Disk_array_controller
Any of a set of standard configurations of Redundant Arrays of Independent Disks
comprise a basic set of RAID ("redundant array of independent disks" or "redundant array of inexpensive disks") configurations that employ the techniques
Standard_RAID_levels
Techniques for using multiple disk drives that do not use RAID
standard for configuring multiple hard disk drives is RAID (redundant array of inexpensive/independent disks), which comes in a number of standard configurations
Non-RAID_drive_architectures
Japanese multinational engineering and electronics company
on artificial intelligence applications and data lakehouses. Servers Disk array subsystems GlobalLogic is a digital services subsidiary of Hitachi based
Hitachi
Replication of data onto multiple hard disks
semi-synchronously, or point-in-time. Replication is enabled via microcode on the disk array controller or via server software. It is typically a proprietary solution
Disk_mirroring
Controller for disk storage, usually integrated into the drive
A disk controller is a controller circuit that enables a CPU to communicate with a hard disk, floppy disk or other kind of disk drive. It also provides
Disk_controller
Electro-mechanical data storage device
A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical computer data storage device that stores and retrieves digital data
Hard_disk_drive
Index of articles associated with the same name
configurations of a RAID disk array. RAID is an acronym for redundant array of independent disks (originally redundant array of inexpensive disks). Different RAID
RAID_levels
Storage array product
discontinued SAN disk array manufactured and sold by EMC Corporation, it occupied the entry-level and mid-range of EMC's SAN disk array products. In 2011
Clariion
Computer that provides file systems in a computer network
technology has been developed to operate multiple disk drives together as a team, forming a disk array. A disk array typically has cache (temporary memory storage
File_server
Data storage virtualization technology
solutions use SAS or SATA disk arrays as the primary storage component due to their relatively low cost. The use of array enclosures increases the scalability
Virtual_tape_library
Buffer between a computer and a storage disk
called disk buffer. Note that disk array controllers, as opposed to disk controllers, usually have normal cache memory of around 0.5–8 GiB. When a disk's controller
Disk_buffer
series of RAID, disk array controllers made by Dell for its PowerEdge server computers. The controllers support SAS and SATA hard disk drives (HDDs) and
Dell_PERC
Data segmentation technique
an array of disks. Striping is used across disk drives in redundant array of independent disks (RAID) storage, network interface controllers, disk arrays
Data_striping
Topics referred to by the same term
Asynchronous array of simple processors Disk array, such as the RAID Gate array, including a field-programmable gate array (FPGA) ICL Distributed Array Processor
Array
Network which provides access to consolidated, block-level data storage
storage. SANs are primarily used to access data storage devices, such as disk arrays and tape libraries from servers so that the devices appear to the operating
Storage_area_network
Enterprise storage array
HPE Storageworks XP (XP = eXtended Platform) is a computer data storage disk array sold by Hewlett Packard Enterprise using Hitachi Data Systems hardware
HPE_XP
General category of storage mechanisms
Disk storage (also sometimes called drive storage) is a data storage mechanism based on a rotating disk. The recording employs various electronic, magnetic
Disk_storage
Software-based, block-level cache of drive data stored in the host computer's main memory
which case the cache is integrated into a hard disk drive and usually called disk buffer), or in a disk array controller, such memory should not be confused
Page_cache
Storage of digital data readable by computers, using memory and storage devices
include storage replication, disk mirroring and redundant array of independent disks (RAID). Impending failure on hard disk drives is estimable using S
Computer_data_storage
Computer storage device with no moving parts
few companies introduced SSDs in Ball Grid Array (BGA) form factors, such as M-Systems' (now SanDisk) DiskOnChip and Silicon Storage Technology's NANDrive
Solid-state_drive
Removable disk storage medium
A floppy disk, diskette, or floppy diskette is a type of disk storage made from a thin, flexible disk coated with a magnetic storage medium. It is enclosed
Floppy_disk
Providing to a computer system a logical view of physical storage
(hard disk, optical disk, tape, etc.) in the enterprise as a single pool of storage." A "storage system" is also known as a storage array, disk array, or
Storage_virtualization
Way to identify a logical unit in computer storage
typical multi-disk drive has multiple physical SCSI ports, each with one SCSI target address assigned. An administrator may format the disk array as a RAID
Logical_unit_number
magnetic disk storage devices from 1956 to 2003, when it sold its hard disk drive business to Hitachi. Both the hard disk drive (HDD) and floppy disk drive
History of IBM magnetic disk drives
History_of_IBM_magnetic_disk_drives
Stacked combination of two or more standard RAID levels
levels (where "RAID" stands for "redundant array of independent disks" or "redundant array of inexpensive disks") to gain performance, additional redundancy
Nested_RAID_levels
Obsolete form of removable media
Disk packs and disk cartridges were early forms of removable media for computer data storage, introduced in the 1960s. A disk pack is a layered grouping
Disk_pack
Storage array product
which evolved out of the EMC Clariion SAN disk array. Clariion’s predecessor, HADA (High Availability Disk Array) was developed in 1991 by Data General Corporation
Dell_EMC_Unity
Symbios Logic Inc. was a manufacturer of SCSI host adapter chipsets and disk array storage subsystems. It was originally established as the NCR Microelectronics
Symbios_Logic
Data storage device
supplementary back-ups, and transferring of computer files. Compared with floppy disks or CDs, they are smaller, faster, have significantly more capacity, and
USB_flash_drive
Computer network equipment or software that analyzes network traffic
increasingly common, combined with a disk array. These devices record packets or packet headers to a disk array.[citation needed] Packet analyzers can:[citation
Packet_analyzer
Linux-based operating system for network-attached storage
and manage storage arrays in hardware-agnostic ways, allowing users to use nearly any combination of hard drives to create a disk array, regardless of model
Unraid
Topics referred to by the same term
second-generation mobile phone systems Hitachi Disk Array Management Program, a software for managing disk storage array Damage-associated molecular pattern, a
Damp
Form of non-volatile memory used in computers and other electronic devices
XT often included magnetic disk drives, and larger amounts of RAM, allowing them to load their operating systems from disk into RAM, with only a minimal
Read-only_memory
exposes itself to the operating system as one logical disk while the array itself consists of several disks. The operating system either does not know that
Logical_disk
across all disks of a declustered array. Under traditional RAID, an entire disk storage system of, say, 100 disks would be split into multiple arrays each of
Non-standard_RAID_levels
Form of computer memory
in contrast with other direct-access data storage media (such as hard disks and magnetic tape), where the time required to read and write data items
Random-access_memory
Network-attached storage
by Gartner in its 2014 Magic Quadrant for General-Purpose Disk Arrays as a leader in the disk storage market because its management team invests heavily
Dell_EMC_Isilon
Recording of information in a storage medium
preservation Digital Revolution Disaggregated storage Disk drive performance characteristics Disk storage Distributed block storage Electronic quantum
Data_storage
Group of electrical connectors specifically aligned
disk array controller or multiple connectors that can be connected to one or more controllers in arbitrary way. Backplanes are commonly found in disk
Backplane
Data storage company
Flexline disk arrays. 2001 - StorageTek introduces virtual networking. 2002 - StorageTek introduces BladeStore, a disk array based on ATA disk technology
StorageTek
Topics referred to by the same term
scheduling Slice (disk), a logical division or partition of a hard disk Array slicing, an operation that extracts certain elements from an array Bit slicing
Slice
Computer bus used for data storage systems
Hard disk drives are accessed over one of a number of bus types, including parallel ATA (PATA, also called IDE or EIDE; described before the introduction
Hard_disk_drive_interface
Algorithm for caching data
Eduardo Pinheiro, Ricardo Bianchini, Energy conservation techniques for disk array-based servers, Proceedings of the 18th annual international conference
Cache_replacement_policies
Early form of read-only memory
Partition Table Disk array Disk image Disk mirroring Disk aggregation Disk partitioning Memory segmentation Locality of reference Logical disk Storage virtualization
Core_rope_memory
Computer memory type used for data preservation
Partition Table Disk array Disk image Disk mirroring Disk aggregation Disk partitioning Memory segmentation Locality of reference Logical disk Storage virtualization
5D_optical_data_storage
Type of memory used on processors that require high transfer rate memory
Partition Table Disk array Disk image Disk mirroring Disk aggregation Disk partitioning Memory segmentation Locality of reference Logical disk Storage virtualization
High_Bandwidth_Memory
the same NAS front-end but could connect via Fibre Channel to any SAN disk array.[citation needed] After the burst of the dot-com bubble, in February,
Auspex_Systems
Type of computer memory
bitline segments are provided. The advantage of the open bitline array is a smaller array area, although this advantage is slightly diminished by the dummy
Dynamic_random-access_memory
Computer data storage partitioning standard
Partition Entry Array, stored at the beginning of the disk, there is a backup GPT header and Partition Entry Array, stored at the end of the disk. The backup
GUID_Partition_Table
Early type of computer memory
capacitors, magnetostrictive delay lines, and delay lines built using rotating disks to transfer data to a read head at one point on the circumference from a
Delay-line_memory
Computer error correction technique
scrubbing, a RAID controller may periodically read all hard disk drives in a RAID array and check for defective blocks before applications might actually
Data_scrubbing
Data recovery utility
TestDisk is a free and open-source data recovery utility that helps users recover lost partitions or repair corrupted filesystems. TestDisk can collect
TestDisk
Isolation of malfunctioning computer resources
backup crosses the fence and, for example, tries to control the same disk array as the primary, a data hazard may occur. Mechanisms such as STONITH are
Fencing_(computing)
Topics referred to by the same term
may refer to: Data reliability (disambiguation), a property of some disk arrays in computer storage Reliability (computer networking), a category used
Reliability
Type of computer memory
equipment: CPU register files, internal CPU caches and GPU caches, hard disk buffers, etc. LCD screens also may employ memory-in-pixel (MiP) SRAM to hold
Static_random-access_memory
66-telescope radio observatory in Chile
The Atacama Large Millimeter/submillimeter Array (ALMA) is an astronomical interferometer of 66 radio telescopes in the Atacama Desert of northern Chile
Atacama Large Millimeter Array
Atacama_Large_Millimeter_Array
Computer memory that loses its contents when unpowered
addition to usually being faster than forms of mass storage such as a hard disk drive, volatility can protect sensitive information, as it becomes unavailable
Volatile_memory
levels. Array controller based encryption describes the encryption of data occurring at the disk array controller before being sent to the disk drives
Array controller based encryption
Array_controller_based_encryption
Computer memory that does not lose its contents after being turned off
types of computer data storage devices (e.g. disk storage, hard disk drives, optical discs, floppy disks, and magnetic tape), and early computer storage
Non-volatile_memory
Type of computer memory
versions of the specifications. They formalize overclocking the memory array by usually 33%. As with standard SDRAM, most generations double the internal
LPDDR
Internet Protocol-based storage networking standard for linking data storage facilities
storage into storage arrays while providing clients (such as database and web servers) with the illusion of locally attached SCSI disks. It mainly competes
ISCSI
Stored data in computer systems
storage, and can begin a restore in milliseconds. An internal hard disk or a disk array (maybe connected to SAN) is an example of an online backup. This
Backup
Component that stores information
memory, most types of magnetic computer storage devices (e.g. hard disk drives, floppy disks and magnetic tape), optical discs, and early computer storage
Computer_memory
Computer memory architecture
For example, always-on spinning disks are online, while spinning disks that spin down, such as massive arrays of idle disk (MAID), are nearline. Removable
Memory_hierarchy
Storage virtualisation appliance
LUN) from a real, external disk array, virtualized by the SVC. An MDisk is the base to create an image mode VDisk. Managed Disk Group - (MDisk Group) a group
IBM_SAN_Volume_Controller
calculating parity data, and for maintaining data integrity when writing to a disk array that uses a parity drive or data striping. An RPU may perform these calculations
RAID_processing_unit
Errors in computer data that introduce unintended changes to the original data
applied. Certain levels of RAID disk arrays have the ability to store and evaluate parity bits for data across a set of hard disks and can reconstruct corrupted
Data_corruption
Supercomputer in Italy
disk storage in RAID-1 configuration 16 additional nodes are also equipped with: 2x NVidia Quadro RTX8000 48 GB (for visualisations) 6.4 TB NVMe disk
Leonardo_(supercomputer)
Topics referred to by the same term
(cognitive architecture) Clarion (programming language) CLARiiON, an EMC disk array Clarion nightsnake (Hypsiglena unaocularis), a small colubrid snake Clarion
Clarion
Magnetic tape data storage technology
hundreds or thousands of LTO cartridges and dozens of mechanisms. Compared to disk or flash storage, LTO offers high-capacity removable cartridges with a lower
Linear_Tape-Open
EMC Corporation's term for redundant copies of data in a disk array
In disk arrays, a business continuance volume (BCV) is EMC Corporation's term for an independently addressable copy of a data volume, that uses advanced
Business_continuance_volume
Flat, usually circular disc that encodes binary data
often printed or stamped onto the disc itself. Unlike the 31⁄2-inch floppy disk, most optical discs do not have an integrated protective casing and are therefore
Optical_disc
Type of computer memory used from 1955 to 1975
least two wires pass through each core, forming a two-dimensional X-Y-wired array of cores. When an electrical current above a certain threshold is applied
Magnetic-core_memory
American data storage company
patent for the first disk array sub system and in the same year, they launched their first ever data storage device: a floppy disk controller named FD1771
Western_Digital
Index of articles associated with the same name
communications controller chip Peripheral DMA controller Disk controller Floppy disk controller Disk array controller, also known as a RAID controller, a type
Controller_(computing)
Data recording made of plastic film
the same functions, and therefore, replace it. Such as for example, hard disk drives in computers replacing cassette tape readers, such as the Atari Program
Magnetic_tape
Replaceable device used for the distribution and storage of video games
However, the manufacturing of ROM cartridges was more expensive than floppy disks, and the storage capacity was smaller. ROM cartridges and slots were also
ROM_cartridge
American computer hardware company
39 – via Gale. Sullivan, Kristina (July 6, 1992). "BusTek to Acquire Disk-Array Maker Chantal Systems". PC Week. 9 (27). Ziff-Davis: 139 – via Gale. Fisher
BusLogic
American supercomputer and AI firm (1983–1994)
Machines also introduced an early commercial redundant array of independent disks (RAID) 2 disk array, the DataVault, circa 1988. Thinking Machines computers
Thinking_Machines_Corporation
Data structure for approximate set membership
disk accesses to retrieve specific hyphenation patterns. With sufficient memory, an error-free hash could be used to eliminate all unnecessary disk accesses;
Bloom_filter
Type of computer memory
Jacob, B.; Ng, S. W.; Wang, D. T. (2008). Memory Systems: Cache, DRAM, Disk. Morgan Kaufmann. p. 333. ISBN 9780080553849. Kalter, H. L.; Stapper, C.
DDR_SDRAM
Data storage device
storage medium such as solid-state drive (SSD) with a higher-capacity hard disk drive (HDD). The intent is adding some of the speed of SSDs to the cost-effective
Hybrid_drive
Line of PowerPC-based computers
height. A third model in a smaller rack-mount case without the large disk array, the Network Server 300 (code named "Deep Dish", as in a deep dish pizza)
Apple_Network_Server
Write once computer memory
them into a device called a PROM programmer. A typical PROM device has an array of memory cells. The bipolar transistors in the cells have an emitter that
Programmable_ROM
1992 computer architecture
includes a main chassis with ten 40MHz dual-XDBus slots and several disk arrays. The system boards connect to two XDBuses for extra bandwidth, and provide
Sun4d
American hard disk drive manufacturer (1987–1999)
Areal Technology, Inc., was an American hard disk drive manufacturer active from 1987 to 1999. The company was one of the first to produce hard drives
Areal_Technology
Method to store and retrieve computer data using optics
make use of other technologies such as magnetism, such as floppy disks and hard disks, or semiconductors, such as flash memory. Optical storage in the
Optical_storage
International radio telescope project
Square Kilometre Array (SKA) is an intergovernmental international radio telescope project being built in Australia (low-frequency) and South Africa (mid-frequency)
Square_Kilometre_Array
Computer hardware device
to communicate with peripheral devices include ESCON and newer FICON. Disk array controller Fibre Channel Host Bus Adapters Host controller interface for
Host_adapter
Discontinued computer memory type
bulk resistance, in conjunction with a stackable cross-grid data access array, using a technology known as Ovonic Threshold Switch (OTS). Initial prices
3D_XPoint
Magnetic data storage device
systems, as main memory rapidly fell off. Drums were then replaced by hard disk drives for secondary storage, which were somewhat slower but both less expensive
Drum_memory
Computer memory used for small quantities of data
individual bytes to be erased and reprogrammed. EEPROMs are organized as arrays of floating-gate transistors. EEPROMs can be programmed and erased in-circuit
EEPROM
Process of encoding and decoding binary data to and from synthesized strands of DNA
other functions, DNA can also be another type of storage medium such as hard disk drives and magnetic tapes. In 2013, an article led by researchers from the
DNA_digital_data_storage
notifications. Then a human administrator connects another node, like a disk array, to the fabric. This event is known at first only to a single switch,
Registered state change notification
Registered_state_change_notification
Early type of solid state computer memory
supply has been turned off and back on is called non-volatile. It is an array of floating-gate transistors individually programmed by an electronic device
EPROM
happening. A zone can include host and LUNS. The LUNS are exported by the DISK ARRAY, the hosts are the clients (servers, computers). Each host in a zone can
Persistent_binding
matrices, rod arrays, drums, drum arrays, etc., the engineers at IBM's San Jose California laboratory invented the hard disk drive. The disk drive created
History_of_hard_disk_drives
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