drums but faster and more expensive than Tertiary storage tape drives . ref The IBM 350 RAMAC Disk File, ASME Award, Feb 27, 1984. ref The commercial usage of hard diskdrives began in 1956 with the shipment of an IBM 305 RAMAC system including IBM Model IBM magnetic diskdrives IBM 350 350 disk ... patent for diskdrives ref http chmhdd.wetpaint.com page Disk Drive Patent Disk Drive Patent ref . Each generation of diskdrives replaced larger, more sensitive and more cumbersome ... required high current AC power due to the large motors required to spin the large disks. Hard diskdrives ... 1996 Disk Trend Report Rigid DiskDrives, Figure 2 Unit Shipment Summary ref As of January 2012, desktop hard diskdrives typically had a capacity of 500 to 2000 gigabyte s, while the largest capacity ..., only the media platters were removable. The IBM magnetic diskdrives IBM 350 IBM 350 Disk File ... an average access time of just under 1 second. The IBM magnetic diskdrives IBM 1301 IBM 1301 ... in 1961, Bryant Computer Products introduced its 4000 series diskdrives. These massive units stood ... 2010 01 03 ref The first disk drive to use removable media was the IBM magnetic diskdrives IBM 1311 ... the IBM magnetic diskdrives IBM 3340 IBM 3340 Winchester disk drive, the first significant ... introduced the first of its series of Storage Module Device SMD diskdrives using conventional .... 1980s, the PC era As the 1980s began, hard diskdrives were a rare and very expensive optional feature on personal computers PCs however by the late 80s, hard diskdrives were standard on all but the cheapest PC. Most hard diskdrives in the early 1980s were sold to PC end users by System ... drive, and soon thereafter internal hard diskdrives proliferated on personal computers. External hard diskdrives remained popular for much longer on the Apple Macintosh . Every Mac made between ... IBM magnetic diskdrives IBM 350 IBM 350 , first commercial disk drive, 5 million characters 1961 IBM ... more details
of hard diskdrives has not changed since the IBM 1301. Disk drive performance and characteristics are measured .... IBM manufactured 8 inch floppy diskdrives from 1969 until the middle 1980s but was not a significant manufacturer of smaller sized floppy diskdrives. ref 1986 Disk Trend Report Flexible DiskDrives shows IBM production only of 8 inch FDDs and states, IBM will end internal production of 8 inch drives by 1987. ref IBM always offered its magnetic diskdrives for sale but did not offer ... DiskDrives, Electronic News, September 14, 1981 ref By 1996 IBM had stopped making hard diskdrives ... Rigid DiskDrives, Specifications Section ref ref name Star IBM s disk drive family has three new ... diskdrives, such as Direct Access Storage Device , Disk File and Diskette File however, here the current ... diskdrives in the foreground File IBM 350 RAMAC.jpg thumb RAMAC mechanism at Computer History Museum ... magnetic diskdrives IBM 355 IBM 355 Random Access Memory was announced for the IBM 650 computer ... patent for diskdrives ref http chmhdd.wetpaint.com page Disk Drive Patent Disk Drive Patent ref ... IBM 1311 DiskDrives.jpg thumb IBM 1311 DiskDrives Model 2 Slave & Model 3 Master The IBM 1311 Disk ... an opportunity for other manufacturers to sell plug compatible diskdrives for use with IBM computers ... on top of the drives The IBM 2314 Disk Access Storage Facility was introduced on April 22, 1965, one ... control unit, a 2312 single drive module, and two 2313 four drive modules for a total of 9 diskdrives ... drives. 2314 Model B with 2319 diskdrives were available in three, six and nine drive models. A 2844 ... access to two separate diskdrives in the Storage Facility. IBM 3330 File DysanRemovableDiskPack.agr.jpg ..., but the code name stuck. The significance of this product, and the reason that diskdrives in general ... capacity of 34 gigabytes in a single drive box. ref see 1994 Disk Trend Report, Rigid DiskDrives ... DASD Model 1 had two 1.0 GB HDDs while the Model 2 had two 1.5 GB HDDs. 9330 family of diskdrives ... more details
Notability Products date October 2009 Refimprove date November 2009 The term disk to disk , or D2D , generally refers to disk to disk backup. With D2D, a computer hard disk is backed up to another hard disk rather than to a tape or floppy. D2D is often confused with virtual tape , but differs in that it enables multiple backup and recovery operations to simultaneously access the disk directly by using a true file system. ref citebook title Backup and recovery first W. Curtis last Preston edition 2 publisher O Reilly Media year 2006 ISBN 0596102461 pages 219 ref Typical advantages of disk to disk Higher speed and higher capacity, relative to tape or floppy, resulting in shorter backup and recovery windows. Non linear recovery of data, enabling a specific file to be restored quicker and simpler than with tape. Lower total cost of ownership due to increased automation and lower hardware costs. Citation needed date August 2008 Remote backup services Remote backup service s are closely related to D2D backup as they are most often stored remotely on disk. The only major difference is that the data tends to be held at a remote location and these services are often provided by List of backup software Managed backup providers . References refs compu storage stub Category Computer backup Category Disk cloning ... more details
Unreferenced date October 2011 Infobox short story See Wikipedia WikiProject Novels or Wikipedia WikiProject Books name The Disk title orig El Disco translator author Jorge Luis Borges country Argentina language Spanish language Spanish series genre Fantasy , short story published in The Book of Sand book The Book of Sand publisher media type Print pub date 1975 english pub date 1977 The Disk is a 1975 in literature 1975 short story written by Argentina Argentinian writer Jorge Luis Borges . It appears in the collection The Book of Sand book The Book of Sand . Synopsis The story deals with a woodcutter who lives in the midst of a deep wood in old England and who has never seen the sea. He tells the reader that at one time a man, who asks lodging from him appears at his door. The woodcutter notes that the man was elderly, as he referred to England as Saxony , which, at the time, was a sign of age. The day after the man wishes to leave, but before he does, he says that he is a King and is descended from Odin . He tells the woodcutter that he is exiled, but that he shall always be a king, because he holds the Disk of Odin, the sole thing in the world that has but one side. He opens his hand and shows the disk the woodcutter sees only an empty palm, but thereafter touches it, feeling a chill in the fingers and seeing a flash. He makes a false claim that he has a full chest of gold and wants to trade it for the disk, because he knows the man will decline. And the man does, to which the woodcutter replies that the man may go. When he turns around, the woodcutter kills the man with an axe. He then drags the body and throws it into the river. He then comes back and searches for the disk, which he never finds. See also portal Novels Bibliography of Jorge Luis Borges Jorge Luis Borges DEFAULTSORT Disk, The Category 1975 short stories Category Short stories by Jorge Luis Borges story stub es El disco ... more details
Refimprove date February 2011 Three Drives , also known as Three Drives on a Vinyl , is a Netherlands Dutch progressive trance duo. Career The duo is made up of Erik De Koning a.k.a. Enrico and Ton van Empel a.k.a. Ton T.B. . ref name British Hit Singles & Albums cite book first David last Roberts year 2006 title British Hit Singles & Albums edition 19th publisher Guinness World Records Limited location London isbn 1 904994 10 5 page 558 ref Their best known tracks are Greece 2000 originally released in 1997 by Massive Drive Recordings, with more mainstream releases on ZYX Music and Hooj Choons and Sunset on Ibiza . Badly labelled track listings on certain compilation album s, have resulted in some confusion over whether the true name of this artist is Three Drives Three Drives on a Vinyl or Greece 2000 . In 1999, they released an album named 2000 , with several tracks with a 2000 theme. Their correct name was originally 3 Drives on A Vinyl, in reference to the ability of the two band members to run three turntables at once. Confusion in the band s use of the adjectival A incorrectly taken to be the indefinite article a has caused the name to sound meaningless when represented as 3 Drives on a Vinyl . Therefore, early production company track listing staff, were naturally inclined to resort to the understandable Greece 2000 when listing the artist s name, and to assume that it was simply the track name that was odd and despite the clear reference of Greece 2000 to a notion of place and time that influenced the recording . The use of the number 3 rather than the full word is less certain, but its visual echo of the special use of the letter A later in the name is convincingly ... as Three Drives . Citation needed date February 2011 Discography Singles Three Drives Three Drives ... Category Dutch trance music groups Netherlands band stub electronic band stub de Three Drives fr Three Drives ... more details
Other uses Midnight Drive disambiguation Midnight Drive Infobox film name The Midnight Drives image director Mark Jenkin producer Pippa Cross writer Mark Jenkin starring Colin Holt br Alex Reid actress Alex Reid br Mary Woodvine br John Woodvine music Alcatraz Swim Team cinematography Steve Tanner editing Mark Jenkin country UK language English budget 50,000 The Midnight Drives is a 2007 British comedy drama comedy drama film written and directed by Mark Jenkin and revolves around a divorcee who takes his bored children on a series of mystical, dream like excursions through the Cornish country side after initially failing to connect with them. Cast Colin Holt as Andy Stafford Alex Reid actress Alex Reid as Sophie Mary Woodvine as Cafe Owner John Woodvine as Guesthouse owner Sam Mills as Casey Stafford Megan Robertson as Gabrielle Stafford Production The film was made by independent film company O Region and had Pippa Best on board as producer. It was filmed at various locations around Cornwall including Land s End , Marazion and Penzance . Release The Midnight Drives film premiere premiered in the UK at the Cornwall Film Festival in October 2007 to a packed house and was subsequently selected for the London Film Festival London Film Focus and Ecran Britanniques festivals as well as the Celtic Media Festival Celtic Media . Critical Reception Derek Malcolm , film critic for The Evening Standard commented on it as A moving film about parentage with an exceptional performance from Colin Holt at its centre . ref http www.thisiscornwall.co.uk news Nighttime screening Midnight Drives article 280167 detail article.html ref References Reflist External links imdb title 0984069 DEFAULTSORT Midnight Drives Category 2008 films Category 2000s comedy films Category English language films Category 2000s comedy drama films Category Road movies ... more details
Infobox Album See Wikipedia WikiProject Albums Name The Devil Drives Type studio Longtype Artist Dave Graney n The Coral Snakes Cover DG Devil Drives.jpg Released May 1997 Recorded August 1996 br Kiss Studios, Melbourne Genre Rock music Rock Length Label Mercury Records Producer Dave Graney , Clare Moore , David Ruffy Reviews Last album The Soft n Sexy Sound br 1995 This album The Devil Drives br 1997 Next album The Baddest br 1999 The Devil Drives is the sixth album by Dave Graney n The Coral Snakes. It was released in May 1997 on Mercury Records. ref name McF Cite encyclopedia last1 McFarlane first1 Ian authorlink1 Ian McFarlane encyclopedia Encyclopedia of Australian Rock and Pop title Encyclopedia entry for Dave Graney n the Coral Snakes url http web.archive.org web 20040604055129 www.whammo.com.au encyclopedia.asp?articleid 853 accessdate 30 December 2010 origyear 1999 year 2004 publisher Allen & Unwin location St Leonards, New South Wales St Leonards, NSW isbn 1865080721 Note On line version updated from 1999 book. ref The album peaked at No. 18 on the Australian Recording Industry Association ARIA ARIA Charts Album Charts . ref name AusCharts Cite web url http australian charts.com showinterpret.asp?interpret Dave Graney title Discography Dave Graney publisher Hung Medien work Australian charts portal accessdate 10 January 2011 ref It was also produced by Dave Graney , Clare Moore and David Ruffy. ref name ARDb Cite web url http hem.passagen.se honga database g graneydave.html work Australian Rock Database title Dave Graney publisher Magnus Holmgren last1 Holmgren first1 Magnus accessdate 30 December 2010 ref The album was recorded in August 1996 in Kiss Studios ... name Lewis Cite web url Allmusic class album id the devil drives r509092 pure url yes title Night of the Wolverine ... Biker in Business Class 4 29 A Man on the Make 4 11 Pascal et Caroline 6 41 The Devil Drives 3 59 Feelin ... Rouge, London Mixing Artwork Cover art Tony Mahony References Reflist DEFAULTSORT Devil Drives Category ... more details
A list of all Apple internal and external drives in chronological order of introduction. Floppy diskdrivesDisk II Disk II Disk III Apple FileWare Apple Twiggy FileWare Disk IIc Macintosh External Disk Drive 400K 400K Drive internal Macintosh External Disk Drive 400K Macintosh External Disk Drive 400K Disk II UniDisk 5.25 Disk II DuoDisk 5.25 Macintosh External Disk Drive Apple UniDisk 3.5 UniDisk 3.5 Macintosh External Disk Drive 800K Macintosh 800K External Drive Disk II Disk 5.25 Macintosh External Disk Drive Apple 3.5 Drive Apple 3.5 Drive Superdrive Apple SuperDrive Macintosh External Disk Drive Macintosh HDI 20 External 1.4MB Floppy Disk Drive Macintosh HDI 20 External 1.4MB Drive Hard diskdrives ProFile Apple Widget Hard Disk 20 Macintosh Hard Disk 20 Hard Disk 20SC Apple Hard Disk 20SC Time Capsule Apple Time Capsule Xserve RAID Optical drives AppleCD PowerCD SuperDrive CD and DVD drive SuperDrive MacBook Air Apple MacBook Air SuperDrive Tape drives Apple Tape Backup 40SC Category Apple Inc. peripherals Category Macintosh peripherals Category Apple II peripherals Category Apple Inc. hardware Category Lists of computer hardware Apple drives ... more details
Disk swapping refers to the practice of inserting and removing, or swapping, floppy disks in a floppy disk drive based computer system . In the early days of personal computer s, before hard drives became commonplace, most fully outfitted computer systems had 2 floppy drives addressed as A and B on CP M and MS DOS. Diskdrives were expensive, however, and having two was seen as a luxury by many computer users who had to make to with a single drive. The purpose of 2 floppy drives was so that the disk containing the Application software application program could remain in the drive while the data disk containing the user s files could be accessed in the second drive. In order to use a function of the program not loaded into memory, the user would have to first remove the data disk, then insert the program disk. When the user then wanted to save their file, the reverse operation would have to be performed. On some less than user friendly systems, this could result in data loss when, for example, files were saved onto the program disk. Disk swapping was an infamous feature of early Macintosh 128k systems, which were extremely RAM starved. Category Floppy disk computer storage ... more details
Disk Expert from OneDayOneApp The user can manage the disk content by picking up files into the special list ref name Disk Expert review by LowEndMac from which he can copy or move them to other drives ...Orphan date April 2012 Please leave this line alone Disk Expert Disk Expert is a shareware Disk space analyzer disk usage analysis , reporting and processing utility for Mac OS X . ref name Download Disk Expert 1.0.1 from Softpedia Functionality Disk Expert scans the volumes of hard drive ref name Video review of Disk Expert and visually displays the disk space usage as a sunburst diagram. ref name Disk Expert Key Features The utility discovers the bulkiest content ref name Download Disk Expert from ..., as well as reveal file in Finder . History Disk Expert was developed by Nektony LLC. It is a software ... speed of the disk scanning process was critical for the utility developers. Also the big attention was paid to Usability interface usability . The application was released on Dec 24, 2011. ref name Disk Expert Release References Reflist refs ref name Disk Expert Release http www.macnews.com 2011 12 22 nektony disk expert new disk space manager mac Disk Expert 1.0 Released ref ref name Disk Expert Key Features http nektony.com disk expert Disk Expert Key Features ref ref name Download Disk Expert from MacUpdate http www.macupdate.com app mac 41199 disk expert Download Disk Expert for Mac. MacUpdate ref ref name Download Disk Expert from OneDayOneApp http mac.onedayoneapp.com ?s disk expert&submit Search Disk Expert featured as Today s Mac App. OneDayOneApp ref ref name Video review of Disk Expert http www.bestmacsoftware.net maintenance review of nektonys disk expert Video review of Disk Expert. Best Mac Software ref ref name Disk Expert review by LowEndMac http lowendmac.com practical 12sw disk expert.html Disk Expert review. LowEndMac ref ref name Download Disk Expert 1.0.1 from Softpedia http mac.softpedia.com get Utilities Disk Expert.shtml Download Disk Expert 1.0.1. Softpedia ... more details
vendors producing IBM compatible drives and disk packs. Examples of a hard disks with removable disk packs are the IBM magnetic diskdrives IBM 1311 IBM 1311 , and the Digital Equipment Corporation Digital RP04. gallery File Fotothek df n 10 0000117.jpg Operator selects a disk pack File Fotothek df n 10 0000118.jpg Bottom cover is removed File Fotothek df n 10 0000119.jpg Disk pack is ready for insertion File IBM2314DiskDrivesAndIBM2540CardReaderPunch.jpg IBM 2314 s with removable disk packs and empty covers on top File Disk Pack.jpg A removable pack in place gallery References http www 03.ibm.com ... for Drum and Disk Records, U.S. Patent 3,206,214, 1965 R.E. Pattison, Portable Memory for Data Processing Machine, U.S. Patent 3,176,281, 1965 See also commons category Removable disk packs disk cartridge , History of hard diskdrives DEFAULTSORT Disk Pack Category Rotating disc computer storage ...Image Nashua diskpack.jpg thumb Disk pack manufactured by Nashua, USA, without its protective cover. A 3.5 modern hard drive is shown for comparison. A Disk pack is a layered grouping of hard disk platter s circular, rigid discs coated with a magnetic data storage device data storage surface . A disk pack is the core component of a hard disk drive. In modern hard disks, the disk pack is permanently sealed inside the drive. In many early hard disks, the disk pack was a removable unit, and would be supplied ... and a separate bottom that completed the sealed package. To remove the disk pack, the drive would ... shell inserted and twisted to unlock the disk platter from the drive and secure it to the top shell. The assembly would then be lifted out and the bottom cover attached. A different disk pack could then be inserted by removing the bottom and placing the disk pack with its top shell into the drive. Turning the handle would lock the disk pack in place and free the top shell for removal. The first removable disk pack was invented in 1965 by two IBM engineers, Thomas G. Leary and R. E. Pattison. The 14 ... more details
Category Floppy diskdrives Category Legacy hardware ...Merge to Floppy disk variants discuss Talk Floppy disk Merge discussion Flippy disk date July 2011 unreferenced date October 2007 A flippy disk sometimes known as a flippy is a Double sided disk double sided 5 floppy disk , specially modified so that the two sides can be used independently but not simultaneously in single sided drives. Use of flippy disks was most common during the 8 bit home computer era of the early to mid 1980s. Generally, there were two levels of modifications For Disk Operating System s that did not use the Hard sectoring index hole in the disk to mark the beginnings of tracks, the flippy modification required only a new write enable notch to be cut. For this purpose, specially designed single square hole hole punchers, commonly known as disk doublers , were produced and sold ... round hole puncher and or an ordinary pair of scissors for this job. For disk operating systems that did ... a second notch was relatively safe, cutting additional windows into the jacket was at great peril to the disk within. A number of floppy disk manufacturers produced ready made flippy media. As the cost of media went down, and double sided drives became the standard, flippies became obsolete. Special ... sensors so that the disk could be flipped over without the necessary index hole punch. Data written with these rare drives complicates conversions today for retrocomputing archivists due to the sector .... Two versions on one disk During the time of single sided floppy disks some software manufacturers would use the two sides of one floppy disk to store two different copies of the same program. Each side ... II family Apple II or an Atari 8 bit family Atari 8 bit version on the other side of the disk. These releases were short lived however. When double sided floppy drives became common on gaming platforms ... placed on the flip side of the disk. If one put the disk into the drive upside down, the game played ... more details
Orphan date December 2010 Unreferenced date December 2009 merge cartridge electronics date March 2012 Disk cartridge has several meanings related to computer storage . 1960s storage medium An early disk cartridge was a single hard disk platter encased in a protective plastic shell. When the removable cartridge was inserted into the cartridge drive peripheral device , the disk read and write head read write head s of the drive could access the magnetic data storage device data storage surface of the platter through holes in the shell. The disk cartridge was a direct evolution from the disk pack drive, or the early hard drive . As the computer storage density storage density improved, even a single platter would provide a useful amount of data storage space, with the benefit being easier to handle than a removable disk pack. An example of a cartridge drive is the IBM magnetic disk drives IBM 2310 IBM 2310 . Disk cartridges were made obsolete by floppy disk s. Expand section date June 2008 Modern storage medium Image Zip disc back.jpg thumb Zip disks are sometimes referred to as disk cartridges. Some more recent removable disk storage media are referred to as disk cartridges . This is most common with Zip drive Zip disk s. It is very rare, but not unheard of, to refer to the floppy disk 3 inch microfloppy as a disk cartridge. Protective casing Some types of optical disc s and magneto optical disc s were either permanently enclosed in a protective plastic sheath, or placed into a sheath before being inserted into the computer drive drive . This sheath was often called caddy , but sometimes also disk cartridge . See also Cartridge electronics Universal Media Disc DEFAULTSORT Disk Cartridge Category Rotating disc computer storage media ... more details
The term disk space is an amount of computer storage space on random access memory devices, such as on a hard drive , floppy or USB flash drive . Citation needed date September 2011 Disk space units are commonly measured in large numbers of bytes , such as kilobytes , megabytes , and gigabytes , with each unit 1024x times larger than the previous unit. The term originated in the 1950s, for the storage area on a hard disk drive , which internally had disk shaped platters to rotate quickly. As storage devices have been created in other shapes, the term disk space has still been used to refer to areas of permanent storage on various storage devices. The total disk space can span multiple devices, such as areas on an array of diskdrives. ref NT Server and Disk Subsystem Performance , Microsoft.com, 2010, webpage http technet.microsoft.com en us library cc767920.aspx MS2 . ref The broader term storage space is so widely used that it can be mistaken for property storage, as with items stored in a closet or storage bin. Hence, the term disk space has remained in use, even when the storage devices are no longer shaped as disks. When storage of data is not permanent, then the common term memory space is often used instead. References Reflist Category Computer memory ... more details
Image Disk II.jpg thumb right Disk II drives. The Disk II Floppy Disk Subsystem , often spelled as Disk , was a 5 inch Floppy disk floppy disk drive designed by Steve Wozniak and manufactured by Apple ... for 595 including the Disk controller controller card which can control up to two drives and cable. The Disk II was designed specifically for use with the Apple II personal computer family to replace ... computer without an Apple IIe Card . Apple produced at least six variants of the basic 5 inch Disk II concept over the course of the Apple II series lifetime The Disk II, the Disk III, the DuoDisk, the Disk IIc, the UniDisk 5.25 and the Apple 5.25 Drive. While all of these drives look differently ... use the same low level disk format, and are all interchangeable with the use of simple adapters, consisting of no more then two plugs and some wires between them. Most DuoDisk drives, the Disk IIc, the UniDisk ... interchangeable. This is not the case with Apple s 3.5 drives, which use several different disk formats ... York Times date 1997 09 01 ref The first Disk II drives A2M0003 sold were built using parts from Shugart Associates Shugart Drives , but to reduce costs Apple switched to Alps Electric Co. of Japan ... a way to adapt their existing and cheaper Disk II drives, however only one external Disk II was supported ... drives to the single 26 pin ribbon cable connector on the Apple , for a total of 4 floppy diskdrives ... Disk II mechanisms inside an individual drive enclosure, just like the Disk IIc had been. All of these drives ... External Disk Drive Apple ProFile External hard disk List of Apple drives List of products discontinued ... peripherals Category Apple II family Category Floppy diskdrives de Disk II ru Disk II ... connector, and are not generally interchangeable. History Disk II Apple did not originally offer a disk ... about thirty drives a day. ref A.P.P.L.E. Co op Celebrates A Decade of Service , Call A.P.P.L.E. ... Computer, Inc., Fall 1990 9 16. ref Normal storage capacity per disk side was 113.75kiB with DOS 3.2.1 ... more details
F6 disk is a colloquial name for a floppy disk containing a Microsoft Windows NT device driver for a SCSI or RAID system. F6 disks are used by all NT based versions of Windows, including Windows 2000 , Windows Server 2003 , and Windows XP . Starting with Windows Vista , floppy F6 disks are obsolete its setup process supports loading third party drivers from USB flash drive USB drives and CD ROM CD ROMs . Usage An F6 disk is named after the manner in which it is used. During the installation process for Windows, the Setup program must load device drivers for the disk system on which Windows will be installed. Unless the disk system has been established on the market before the finalization of the particular Windows release being installed, the drivers are not included on the Windows installation discs, and they must be loaded by means of an F6 disk. An F6 disk is loaded in Windows setup by pressing the Function key F6 key immediately when Windows Setup starts. The message Press F6 if you need to install a third party SCSI or RAID driver... is briefly flashed on the screen every time Windows Setup starts. An F6 disk contains device drivers in its root directory . Prior to Windows Vista, F6 disks were always floppy disks because, at the point the F6 prompt is shown, Windows Setup has not loaded the drivers for any media type other than floppy disks. Support for USB drives and CD ROMs was added in Windows Vista. Device drivers for RAID and other disk controllers are often provided on CD ROMs by the manufacturers, but they must be copied to an F6 disk if they are to be used during Windows Setup. An alternative approach is to slipstream computing slipstream the required SATA SCSI SAS RAID EIDE drivers into the Windows installation files directory e.g. i386 for the x86 variety by means of software like nLite and then create an ISO image that can be burned to CD or DVD media. References Microsoft support, http support.microsoft.com ?kbid 313348 KB313348 Category RAID Category ... more details
unreferenced date May 2010 The disk controller is the Electronic circuit circuit which enables the Central processing unit CPU to communicate with a hard disk , floppy disk or other kind of disk drive . Early disk controllers were identified by their storage methods and data encoding. They were typically implemented on a separate controller card. Modified frequency modulation MFM controllers were the most common type in small computers, used for both floppy disk and hard diskdrives. Run length limited RLL controllers used data compression to increase storage capacity by about 50 . Priam created a proprietary storage algorithm that could double the disk storage. Shugart Associates Systems Interface Shugart Associates System Interface SASI was a predecessor to SCSI . Modern disk controllers are integrated into the disk drive. For example, disks called SCSI disks have built in SCSI controllers. In the past, before most SCSI controller functionality was implemented in a single chip, separate SCSI controllers interfaced disks to the SCSI bus. The most common types of interfaces provided nowadays by disk controllers are Parallel ATA PATA IDE and Serial ATA for home use. High end disks use SCSI , Fibre Channel or Serial Attached SCSI . Disk controller versus host adapter The correct term for the components that allows a computer to talk to a peripheral bus is host adapter or host bus adapter HBA . On the other hand, a disk controller allows a disk to talk to the same bus. Those two are often confused, especially in the Advanced Technology Attachment PC world . In fact signals read by a disk read and write head are converted by a disk controller, then transmitted over the peripheral ..., and then read by the CPU . Sometimes there may be yet another controller between a host adapter and a disk controller a disk array controller that allows RAID Hardware RAID hardware RAID to be formed ... also Disk array controller Floppy disk controller Forensic disk controller Controller computing ... more details
unreferenced date April 2012 Image DOM.JPG thumb right 250px Disk on module A disk on module DOM is a Solid state drive flash drive with either 40 44 pins Parallel ATA IDE Standard ATA Interface USB or SATA Interface to be used as a computer hard disk drive HDD . The flash to IDE converter simulates a harddisk, and therefore the modules can be used without additional software or drivers. They are used particularly within embedded computing systems where they can often be deployed in to very harsh environments where mechanical hard diskdrives would simply fail , or in a thin client because of small size, low power consumption and silent operation. DOMs are highly reliable as they do not have any moving parts like regular hard disks and are small in size and light in weight. However, after a disk crash in traditional hard disk, some data may still be recoverable by scanning the physical media using specialized equipment, but there is no known method to recover lost data from a physically damaged DOM. Citation needed date July 2010 Currently storage capacities range from 32MB to 32GB with various form factor including vertical or horizontal orientation. The DOM works the same way as a solid state drive , but it is generally plugged directly to the motherboard. DEFAULTSORT Disk On Module Category Solid state computer storage media Compu hardware stub de Disk on Module fr Disk On Module it Disk on module nl Disk on module ru Disk on Module ... more details
and Q&A for Solid State Drives date 2009 05 05 ref See also Page cache Hard disk References reflist ...Refimprove date May 2009 distinguish page cache File Fujitsu MPG3307AH ms avrs 110909.jpg thumb The disk buffer sits on the controller board of the hard drive. In computer storage , disk buffer often ambiguously Fact date September 2007 called disk cache or cache buffer Fact date September 2007 is the embedded ... and the physical hard disk platter that is used for storage. Modern hard disks come with 8 ... from the disk platter. The disk buffer is physically distinct from and is used differently than the page cache typically kept by the operating system in the computer s main memory . The disk buffer is controlled by the microcontroller in the hard disk drive , and the page cache is controlled by the computer to which that disk is attached. The disk buffer is usually quite small, from 8 ... cache is reused multiple times, the data in the disk buffer is rarely reused. Fact date September 2007 In this sense, the terms disk cache and cache buffer are misnomers the embedded controller s memory is more appropriately called the disk buffer. Note that disk array controller s, as opposed to disk controller s, usually have normal cache memory of around 0.5&ndash 8 GiB. Uses Read ahead read behind When executing a read from the disk, the disk arm moves the Disk read and write head read ... system. The disk s embedded computer typically saves these unrequested sectors in the disk buffer, in case the operating system requests them later. Speed matching The speed of the disk s I O interface ... the hard disk platter . The disk buffer is used so that both the I O interface and the disk read write head can operate at full speed. Write acceleration The disk s embedded microcontroller may signal the main computer that a disk write is complete immediately after receiving the write data, before ... from the disk buffer, and the file system on the disk may be left in an inconsistent state. On some ... more details
Unreferenced date December 2009 A logical disk is a device that provides an area of usable storage capacity on one or more physical disk drive components in a computer system. Other terms that are used to mean the same thing are disk partition partition , logical volume , and in some cases a virtual disk vdisk . The disk is described as logical because it does not actually exist as a single physical entity in its own right. There are many ways to define a logical disk or volume. Most modern operating systems provide some form of logical volume management which allows the creation and management of logical volumes. Logical disks are also defined at various levels in the storage infrastructure stack . From top to bottom Operating System Defines partitions on the disks to which it has visibility these disks may be logical themselves SAN If the SAN is virtualized, a device in the same presents logical disks vdisk to the host operating systems Storage Subsystem Usually providing some form of RAID where logical disks partitions are presented to the SAN from the RAID arrays themselves. The RAID arrays actually contain the physical disks. Why do we need them? When IBM first released the magnetic disk drive in the 1956 IBM 305 a single drive would be directly attached to the using system, with each disk managed as a single entity. As the development of drives continued, it became apparent ... one physical disks are RAID ed together to produce a single logical disk . In a modern home Personal computer PC environment, diskdrives now provide hundreds of gigabytes of storage capacity which can be impractical to use as a single entity. Therefore, most systems have their drives partitioned into multiple logical drives Citation needed date November 2007 . In most modern business Information ... Logical Disk Category Computer storage Category Storage virtualization pl Partycja logiczna simple Logical disk ... more details
A disk editor is a computer program that allows its user to read, edit, and write raw data at ASCII character or hexadecimal , byte byte levels on diskdrives e.g., hard disk s, USB flash disk s or removable media such as a floppy disk s as such, they are sometimes called sector editors, since the read write routines built into the electronics of most diskdrives require to read write data in chunks of disk sector sector s usually 512 bytes . Many disk editors can also be used to edit the contents of a running computer s computer memory memory or a disk image . Unlike hex editors, which are used to edit Computer file files , a disk editor allows access to the underlying disk structures, such as the master ... directories . Programmers can use disk editors to understand these structures and test whether ... disk editors include special functions which enable more comfortable ways to edit and fix file systems or other disk specific data structures. Furthermore some include simple file browsers that can present the disk contents for partially corrupted file systems or file systems unknown to the operating system. These features can be used for example for file recovery. History Disk editors for home ... resets, instead of having to be re loaded on the same disk drive that later would hold the floppy to be edited the majority of home computer users possessed only one floppy disk drive at that time . Having the disk editor on cartridge also helped the user avoid editing damaging the disk editor application disk by mistake. All disk editors strive to be better than code debug command DEBUG ... from a Floppy disk floppy or Hard disk drive hard disk based on the BIOS . This permits simple disk ... and is in essence useless as disk editor for the system drive. The Resource Kit and the support ... Technet accessdate 2011 07 05 ref as a very simple disk editor supporting the use and modification ... of some disk editors or products containing them This is a list of utility software utilities for performing ... more details
File SixHardDriveFormFactors.jpg thumb Six hard diskdrives File Floppy DiskDrives 8 5 3.jpg thumb Three floppy diskdrives File Asus CD ROM drive.jpg thumb A CD ROM optical disc drive Background ... disk storage device was the IBM IBM magnetic diskdrives IBM 350 RAMAC 350 shipped in 1956 as a part ... to hard drives, there is a separate page for that Please keep it general hard disk, floppy ... track. Due to technological advances almost all hard diskdrives since Compaq and Western Digital ... file id 1066 Document LBA01 02 LBA Count for IDE Hard DiskDrives ref defines the standard disk ...Unreferenced date June 2010 Disk storage or disc storage is a general category of storage mechanisms ... to as the Computer data storage media media . A disk drive is a device implementing such a storage ... the media as in compact disc drive and the compact disc. Notable types are the hard disk drive HDD containing a non removable disk, the floppy disk floppy disk drive FDD and its removable floppy disk ... , high density storage provided by tape drive s using magnetic tape . Vigorous innovation in disk ... per bit gap between disk and tape, reducing the importance of tape as a complement to disk. Disk ... 180px heights 135px perrow 2 align right Image Samsung HD753LJ 01 Top.jpg center A typical hard disk ... Image Samsung HD753LJ 03 Opened.jpg center Top cover removed center Image Hard disk platters and head.jpg ... and disk center Image Hard disk head.jpg center Head on the disk platter center gallery Too HDD specific, putting better images in intro Digital diskdrives are Computer data storage block storage devices . Each disk is divided into logical Block data storage blocks collection of sectors . Blocks are addressed ... to disk happens at the granularity of blocks. Originally the disk capacity was quite low and has been ... is the smallest size of data to be stored in a hard disk drive and each file will have many sectors ... into a format that the individual drive can use to store onto the disk itself. The data is then passed ... more details
In data storage device data storage , disk mirroring or RAID1 is the replication of logical disk volumes onto separate physical hard disk s in Real time computing real time to ensure continuous availability ... on the disk array controller or via server computing server software . It is typically a proprietary ... of a disk hardware failure a system can continue to process or quickly recover data. Mirroring may be done locally where it is specifically to cater for disk unreliability, or it may be done ... identical drives, though the process can be applied to logical drives where the underlying ... solutions such as disk array s or in software within the operating system. There are several scenarios for what happens when a disk fails. In a hot swap system, in the event of a disk failure, the system itself typically diagnoses a disk failure and signals a failure. Sophisticated systems may automatically activate a hot standby disk and use the remaining active disk to copy live data onto this disk. Alternatively, a new disk is installed and the data is copied to it. In less sophisticated systems, the system is operated on the remaining disk until such time as a spare disk can be installed ..., system performance is usually degraded as the disk system is fully occupied in copying data from one disk to the other. It is often misunderstood that mirroring of disks is a substitute for taking regular backups as it is incorrectly assumed that the only cause of data loss is disk failure. In fact ... to say It is differentiated from a disk snapshot snapshot in that there are no remaining links ..., disk mirroring can allow each disk to be accessed separately for reading purposes. Under certain circumstances ... disk can seek most quickly to the required data. This is especially significant where there are several tasks competing for data on the same disk, and thrashing where the switching between tasks takes ... configurations that frequently access the data on the disk. In some implementations, the mirrored disk ... more details
about virtual drives emulated with software hardware storage devices using RAM solid state drive filesystems without drive emulation tmpfs refimprove date June 2009 A RAM disk or RAM drive is a block of Random ... as if the memory were a disk drive secondary storage . It is sometimes referred to as a virtual RAM ... containing RAM, which is a type of solid state drive . Performance The performance of a RAM disk is in general ... , hard disk drive hard drive , tape drive , or optical disk drive optical drive . ref cite web ... and type of file system , as well as others. File access time is greatly decreased since a RAM disk ... and tape drives must wind or rewind to a particular position on the media before reading or writing ..., alignment or positioning necessary. Second, the throughput maximum throughput of a RAM disk is limited ... disk can also improve the speed of loading pages . ref http www.macosxhints.com article.php?story 20040827132909881 Using a RAM disk for browsing the web on Macs http www.ghacks.net 2007 12 14 use a ramdisk to increase firefox security Using a RAM disk to improve security in firefox ref In many cases, the data stored on the RAM disk is created, for faster access, from data permanently stored elsewhere, and is re created on the RAM disk when the system reboots. Implementation Software RAM disks ... kernel , it is possible to also create and manage a RAM disk by way of a user space application ... due to the temporary nature of the information stored in the RAM disk, but an uninterruptible power ... RAM disk for microcomputers was invented and written by Jerry Karlin in the UK in 1979 80. The software, known as the Silicon Disk System was further developed into a commercial product and marketed ... the CPU could directly address. Making bank switched RAM behave like a disk drive was much faster than the diskdrives especially in those days before hard drives were readily available on such machines. The Silicon Disk was launched in 1980, initially for the CP M operating system and later for MS ... more details
250px Factory assembled Melco Buffalo external hard drive in a disk enclosure Multiple drives RAID ... used by drives for convert 5.25 in mm adj mid diameter floppy disk s in the IBM PC AT . The original ...Image Usb firewire hard disk enclosure.jpg thumb 300px right A 3.5 USB FireWire hard disk enclosure A disk enclosure is essentially a specialized chassis designed to hold and power disk drive s while providing ... provide power to the drives therein and convert the data sent across their native computer bus data ... and signal of a different standard. Factory assembled external hard disk drive s, external DVD ROM drives, and others are all built around disk enclosures. Bulkier models built around 2.5 and 3.5 hard drives and full height 5.25 DVD ROM drives use enclosures that are often nearly identical to Original ... to using external disk enclosures include Adding additional storage space and media types to small ... space for additional drives. ref cite web author 1 url http www.tomshardware.com reviews caldigit ... 2009 07 29 ref Adding more drives to any given server computing server or workstation than their chassis ... article 07 06 07 23TCthumper 2.html title Sun Fire X4500 server crams 48 drives into 4U & 124 Storage ... & 124 Review Three One Touch Backup Drives publisher Informationweek.com date 2005 10 18 accessdate ... to share data or provide a cheap off site backup solution. Preventing the heat from a disk drive ... magnetic hard drives or optical disc drive s inside USB , FireWire , or Serial ATA enclosures. External 3.5 floppy drive s are also fairly common, following a trend to not integrate floppy drives into compact and laptop computers. Pre built external drives are available through all major manufacturers of hard drives, as well as several third parties. These may also be referred to as a caddy a sheath, typically plastic or metallic, within which a hard disk drive can be placed and connected ... they are connected some caddies have integrated fans with which to keep the drives within at a cool ... more details
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