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A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material. The platters are paired with magnetic heads, usually arranged on a moving actuator arm, which read and write data to the platter surfaces. Data is accessed in a random-access manner, meaning that individual blocks of data can be stored and retrieved in any order. HDDs are a type of non-volatile storage, retaining stored data when powered off. Modern HDDs are typically in the form of a small rectangular box.
Small Computer System Interface is a set of standards for physically connecting and transferring data between computers and peripheral devices. The SCSI standards define commands, protocols, electrical, optical and logical interfaces. The SCSI standard defines command sets for specific peripheral device types; the presence of "unknown" as one of these types means that in theory it can be used as an interface to almost any device, but the standard is highly pragmatic and addressed toward commercial requirements. The initial Parallel SCSI was most commonly used for hard disk drives and tape drives, but it can connect a wide range of other devices, including scanners and CD drives, although not all controllers can handle all devices.
Internet Small Computer Systems Interface or iSCSI is an Internet Protocol-based storage networking standard for linking data storage facilities. iSCSI provides block-level access to storage devices by carrying SCSI commands over a TCP/IP network. iSCSI facilitates data transfers over intranets and to manage storage over long distances. It can be used to transmit data over local area networks (LANs), wide area networks (WANs), or the Internet and can enable location-independent data storage and retrieval.
Western Digital Corporation is an American computer drive manufacturer and data storage company, headquartered in San Jose, California. It designs, manufactures and sells data technology products, including data storage devices, data center systems and cloud storage services.
Seagate Technology Holdings plc is an American data storage company. It was incorporated in 1978 as Shugart Technology and commenced business in 1979. Since 2010, the company has been incorporated in Dublin, Ireland, with operational headquarters in Fremont, California, United States.
A disk array controller is a device that manages the physical disk drives and presents them to the computer as logical units. It almost always implements hardware RAID, thus it is sometimes referred to as RAID controller. It also often provides additional disk cache.
Self-Monitoring, Analysis and Reporting Technology is a monitoring system included in computer hard disk drives (HDDs) and solid-state drives (SSDs). Its primary function is to detect and report various indicators of drive reliability with the intent of anticipating imminent hardware failures.
The HP Storageworks XP is a computer data storage disk array sold by Hewlett Packard Enterprise using Hitachi Data Systems hardware and adding their own software to it. It's based on the Hitachi Virtual Storage Platform and targeted towards enabling large scale consolidation, large database, Oracle, SAP, Exchange, and online transaction processing (OLTP) environments.
LaCie is an American-French computer hardware company specializing in external hard drives, RAID arrays, optical drives, Flash Drives, and computer monitors. The company markets several lines of hard drives with a capacity of up to many terabytes of data, with a choice of interfaces. LaCie also has a series of mobile bus-powered hard drives.
Adaptec was a computer storage company and remains a brand for computer storage products. The company was an independent firm from 1981 to 2010, at which point it was acquired by PMC-Sierra, which itself was later acquired by Microsemi, which itself was later acquired by Microchip Technology.
A NetApp FAS is a computer storage product by NetApp running the ONTAP operating system; the terms ONTAP, AFF, ASA, FAS are often used as synonyms. "Filer" is also used as a synonym although this is not an official name. There are three types of FAS systems: Hybrid, All-Flash, and All SAN Array:
- NetApp proprietary custom-build hardware appliances with HDD or SSD drives called hybrid Fabric-Attached Storage
- NetApp proprietary custom-build hardware appliances with only SSD drives and optimized ONTAP for low latency called ALL-Flash FAS
- All SAN Array build on top of AFF platform, and provide only SAN-based data protocol connectivity.
OCZ was a brand of Toshiba that was used for some of its solid-state drives (SSDs) before they were rebranded with Toshiba. OCZ Storage Solutions was a manufacturer of SSDs based in San Jose, California, USA and was the new company formed after the sale of OCZ Technology Group's SSD assets to Toshiba Corporation. Since entering the memory market as OCZ Technology in 2002, the company has targeted its products primarily at the computer hardware enthusiast market, producing performance DDR RAM, video cards, USB drives, power supplies, and various cooling products. SSD devices with the OCZ brand that are using SATA III, PCI Express, Serial attached SCSI and USB 3.0 interfaces, for both client and enterprise applications are currently being produced. OCZ Storage Solutions was dissolved on April 1, 2016 and absorbed into Toshiba America Electronic Components, Inc, which later then became Kioxia.
A solid-state drive (SSD) is a solid-state storage device that uses integrated circuit assemblies to store data persistently, typically using flash memory, and functioning as secondary storage in the hierarchy of computer storage. It is also sometimes called a semiconductor storage device, a solid-state device or a solid-state disk, even though SSDs lack the physical spinning disks and movable read–write heads used in hard disk drives (HDDs) and floppy disks. SSD also has rich internal parallelism for data processing.
ATTO Technology, Inc. is a manufacturer of storage connectivity products for data-intensive computing. ATTO manufactures Fibre Channel and SAS/SATA host bus adapters, RAID adapters, Fibre Channel switches, protocol conversion bridges, storage controllers, MacOS iSCSI initiator software and acceleration software with storage interface connectivity to SATA, SAS, Fibre Channel, Thunderbolt devices, Ethernet and NVMe.
Intel Rapid Storage Technology (RST) is a driver SATA AHCI and a firmware-based RAID solution built into a wide range of Intel chipsets. Currently also is installed as a driver for Intel Optane temporary storage units.
A storage area network (SAN) or storage network is a computer network which provides access to consolidated, block-level data 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 system as direct-attached storage. A SAN typically is a dedicated network of storage devices not accessible through the local area network (LAN).
EqualLogic products are iSCSI-based storage area network (SAN) systems marketed by Dell. Dell has 3 different lines of SAN products: EqualLogic, Compellent and Dell PowerVault. Before the acquisition by Dell in January 2008, EqualLogic was an independent company.
IBM Storwize systems were virtualizing RAID computer data storage systems with raw storage capacities up to 32 PB. Storwize is based on the same software as IBM SAN Volume Controller (SVC).
LSI Corporation was an American company based in San Jose, California which designed semiconductors and software that accelerate storage and networking in data centers, mobile networks and client computing.
Dell EMC Unity is one of Dell EMC’s mid-range storage array product lines. It was designed from the ground up as the next generation midrange unified storage array after the EMC VNX and VNXe series, which evolved out of the EMC Clariion SAN disk array.
References
- ↑ "Box Hill and Artecon Set Date for Shareholder Vote on Merger". www.boxhill.com:80. Archived from the original on 30 August 2000. Retrieved 14 January 2022.
- ↑ "East Coast Meets West Coast in New Merger -".
- ↑ thefreelibrary.com, Chaparral Network Storage starts IPO
- ↑ SOCALTECH LLC, Dot Hill moves, new headquarters in Longmont, Colorado, June 16, 2010
- ↑ finance.yahoo.com, HILL, NASDAQ
- ↑ NY Times, Dot Hill Systems Corporation, HILL: Nasdaq; Technology/Computer Hardware
- ↑ "Seagate Technology to Acquire Dot Hill Systems | News Archive | Seagate US".