disc drive

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disk drive

A storage device that holds, spins, reads and writes magnetic disks or optical discs (CD, DVD, MO, UDO). In this encyclopedia, disk ("k") refers to a magnetic disk drive, and disc ("c") means an optical drive. Magnetic disk drives contain non-removable platters; however, optical drives are receptacles for removable discs or cartridges. See magnetic disk, CD, DVD, magneto-optic disk and UDO.

The Early 1990s

This RAID II prototype in 1992, which embodied the principles of high performance and fault tolerance, was built by University of Berkeley graduate students. Housing 36 320MB disk drives, its total storage was less than the single drive in the cheapest PC only six years later. (Image courtesy of The Computer History Museum, www.computerhistory.org) See RAID.

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References in periodicals archive

Hitachi-LG Data Storage and co-conspirators participated in meetings and conversations at different times to fix prices and rig bids for optical disc drives sold to Microsoft and HP, the DOJ said.

Hitachi-LG Data Storage to plead guilty on price-fixing

Manufacturers shifted around seven million disc drives in the region this year, a 21 per cent growth over 2007 sales, according to Sofocles Socratous, senior sales manager for the Middle East, Turkey and Africa at storage leader Seagate.

HD drive sales touch $450m

When handling transactional data, which must be available 24x7x365, increased disc drive reliability is important to enterprise customers.

The revolution in hard disk drive storage: small 2.5" serial attached SCSI drives

The opening of DSC marks the first time a company that produces hard disc drives has opened its doors to its entire customer base to assist in all aspects of product development.

SEAGATE LAUNCHES DESIGN SERVICE CENTERS TO DELIVER COMPLETE DESIGN AND TIME-TO-MARKET EXPERTISE

More specifically, NCQ increases performance and disc drive life by allowing the drive to internally optimize the execution order of workloads or commands.

Supercharging SATA drive performance: Native Command Queuing makes SATA viable in workstation, server applications

Seagate Technology has unveiled the Barracuda ATA II, its new 7,200rpm ATA disc drive.

Seagate Technology unveils 7,200rpm ATA disc drive

Seagate Technology Inc says that it has achieved a world record in disc drive technology by demonstrating an areal density of over 16Gb/square inch, almost thrice the storage capacity of current hard disc drives.

-SEAGATE DEVELOPING DISK DRIVES WITH INCREASED DENSITY

For the past 40 years, longitudinal recording has been used to record information on a disc drive. In longitudinal recording, the magnetization in the bits on a disc is flipped between lying parallel and anti-parallel to the direction in which the head is moving relative to the disc.

Perpendicular recording: the next generation of magnetic recording. (Tape/Disk/Optical Storage)

Seagate recently released its Cheetah X15 disc drive, the first drive to rotate at 15,000RPM, as well as deliver more I/Os Per Second (TOPS) than what had been previously accomplished with 10,000RPM drive designs.

Examining The Design And Performance Of The Cheetah X15

Eurologic Systems announced that its network storage systems are available with Seagate Technology's 73GB disc drive, the Cheetah 73, offering Eurologic's OEM and channel partners the ability to offer end-users scalability and capacity at a price-per-megabyte, while also supporting the interface technologies essential to performance within a network storage environment.

Eurologic Runs With A Cheetah