Unreferenced date September 2011 An Object based StorageDevice OSD is a computer storagedevice, similar to disk storage but working at a higher level. Instead of providing a block oriented interface ... SCSI standards. The initial OSD standard, Object based StorageDevice Commands OSD , was approved in 2004. In the OSD standard, objects are specified with a 64 bit partition ID and a 64 bit object ...?product id 1204555 SCSI Object Based StorageDevice Commands OSD at the INCITS online store http ... and get attributes on objects. The OSD is responsible for managing the storage of objects and their metadata. The OSD implements a security mechanism that provides per object and per command access control. Several research projects have explored objectstorage and implemented prototype systems ... OSD command set for SCSI . The OSD Standard The SCSI command set for ObjectStorage Devices was developed by a working group of the Storage Networking Industry Association SNIA for the T10 committee ... Version 2 Work continues on a second generation of the SCSI command set, Object Based Storage Devices ... storagedevice on a network. The general goal of the research was to provide a higher level building ... Object Based Storage by Mesnier, Ganger, and Riedel, IEEE Communications Magazine , v.41 n.8 pp 84 90, August 2003. http developers.sun.com solaris articles osd.html Object Based Storage Devices ... by David Wagner, Dell.com, January 2011 Category Computer storage Category Network protocols cs Objectstoragedevice ..., called objects . Each object has both data an uninterpreted sequence of byte s and metadata an extensible set of attributes describing the object . The command interface to the OSD includes commands ... subject to physical size limitations of the device or logical quota constraints on a partition. An extensible ... of bytes in an object and the modify time of an object. There is a special policy ... more details
Storagedevice may refer to Box , or any of a variety of containers or receptacles Data storagedevice , a device for recording information, which could range from handwriting to video or acoustic recording, or to electromagnetic energy modulating magnetic tape and optical discs Objectstoragedevice , computer storagedevice Portable storagedevice , small hard drive Nintendo DS storage devices , used for Nintendo game systems See also intitle storage disambig Box , or any of a variety of containers or receptacles ... more details
6055 bibcode 1986Natur.319..618G ref A data storagedevice is a device for recording storing information ... modulating magnetic tape and optical disc s. A storagedevice may hold information, process information, or both. A device that only holds information is a recording Medium communication medium . Devices that process information data storage equipment may either access a separate portable removable recording medium or a permanent component to store and retrieve information. Electronic data storage is storage which requires electrical power to store and retrieve that data. Most storage devices that do ... or not it is electronically stored in a semiconductor Computer data storagedevice , for it is certain ... storage, that is, the data will remain stored when power is removed from the device. In contrast ... is information . Many data storage devices are also media players. Any device that can store and playback ... box are a Nonlinear medium nonlinear storage medium . Optical Any Physical body object visible to the eye ... relative to the read write device s of the storage apparatus as listed Paper card storage Punched ... tape a tape passing one or more read write erase heads Disk storage flat, round, rotating object ... storage media Primary storage technologies DEFAULTSORT Data StorageDevice Category Communication ... ru simple Data storagedevice sk Z znamov m dium sv Lagringsmedium ... 200px thumb right Edison cylinder phonograph ca. 1899. The Phonograph cylinder is a storage medium. The phonograph may or may not be considered a storagedevice. image Reel to reel recorder tc 630.jpg thumb 200px right A reel to reel tape recorder Sony TC 630 . The magnetic tape is a data storage medium. The recorder is data storage equipment using a portable medium tape reel to store the data. Image ... can be used as data storage equipment. The paint and canvas can be used as data storage media. Image RNA comparedto DNA thymineAndUracilCorrected.png thumb 200px RNA might be the oldest data storage ... more details
Unreferenced date December 2009 A portable storagedevice PSD is a small hard drive designed to hold any kind of digital data. This is slightly different from a portable media player , which stores and plays music and movie s. Some are fixed size hard drives of 256GB, 320GB, etc. Newer units are expandable using 2.5 laptop hard drives, allowing for an unlimited storage capacity, which is useful for video and images. When travelling, a portable storagedevice may be a useful alternative to backing up or purging memory card s if a computer is unavailable for downloading. Photography One type of data that may be stored is digital photograph s Raw image format RAW data , transferred from a digital camera . Many PSDs will connect directly to a camera and copy the images, or they may provide a slot for a memory card to plug in, with or without a card reader device. Some early models allow the user to review the images on a colour screen, but at the top end of the market. See also computer storage MSDC Mass Storage Digital Class MSDC DEFAULTSORT Portable StorageDevice Category Computer storage media ... more details
product History of IBM magnetic disk drives References Reflist DEFAULTSORT Direct Access StorageDevice Category IBM storage devices Category IBM mainframe operating systems de Direct Access StorageDevice ja Direct access storagedevice ... to, read from, and control the given device. CTR CHR Channel programs address data through a scheme ... ibm history exhibits storagestorage 2321.html title IBM Archives IBM 2321 data cell drive author IBM Corporation accessdate 8 Nov, 2011 ref the addressing scheme and the device itself was referred to as CHR ... programmer remained unaware of the underlying storage arrangement, which stored the data ... indexed sequential VSAM Virtual Storage Access Method MVS, OS 390 Basic sequential access method BSAM ... BDAM Basic Direct Access Method VSAM Virtual Storage Access Method Present terminology Both drums and data cells have disappeared as products, so DASD remains as a synonym of a disk device. Modern DASD ... by most DASD devices FICON new protocol to replace ESCON IBM Enterprise Storage Server an example of large ... more details
Storage Module Device SMD was a family of storage devices hard disk drives first shipped by Control Data Corporation in December 1973 as the CDC 9760 40 megabyte MB unformatted storage module disk drive. ref name Newsletter Control Data Corporation Newsletter, Summer 1977 Edition, p. 6 ref The CDC 9762 80 MB variant was announced in June 1974 ref name Newsletter and the CDC 9764 150 MB and the CDC 9766 300 MB variants were announced in 1975 ref name Newsletter all capacities unformatted . A non removable media variant family of 12, 24 and 48 MB capacity, the MMD, was then announced in 1976. ref name Newsletter This family s interface, SMD , derived from the earlier Digital Equipment Corporation Digital RP0x interface, was documented as ANSI Standard X3.91M 1982, Storage Module Interfaces with Extensions for Enhanced Storage Module Interfaces. The SMD interface was based upon a definition of two flat interface cables A control and B data which ran from the disk drive to a controller and then to a computer. This interface allowed data to be transferred at 9.6 megabit Mbit s. The SMD interface was supported by most 8 inch and 14 inch removable and non removable disk drives. It was mainly implemented on disk drives used with mainframe computer mainframes and minicomputer s and was later itself replaced by SCSI . Control Data shipped its 100,000th SMD drive in July 1981. ref Magnetic Peripherals Corp. Magazine, August 10, 1981 ref By 1983 at least 25 manufacturers had supplied SMD drives, ref 1984 Disk Trend Report ref including, Ampex , Century Data Systems , Control Data Corporation ... platters are guard platters and not used for storage. The top guard platter is exactly the same ... has 12 14 platters. Again the top and bottom platters are guard platters and not used for storage ... See also SCSI References references Computer bus Category Computer storage devices Category Computer storage buses ... more details
Multiple issues refimprove July 2009 cleanup August 2010 The USB mass storagedevice class , otherwise ... mass storagedevice class comprises a set of computing Protocol computing communications protocols ... like this one will typically implement the USB mass storagedevice class. Some of the devices that are connected ... USB mass storage driver was produced by Microsoft, even for Windows 98 . This meant that a device specific driver was needed for each type of USB storagedevice. Today, third party generic drivers ... Mobile devices cannot show their file systems as a mass storagedevice unless the device implementer ... versions of Mac OS may not be 100 fully compatible with the USB mass storagedevice class or at least ... devices conforming to USB mass storagedevice class, there are quirks, bug fixes and additional functionalities ... and music. The Xbox 360 as of April 2010 also allows using a mass storagedevice for saved games ... ref , and the PS3 allows transferring saves between devices on a mass storagedevice. Graphing ..., will typically implement the USB mass storagedevice class. The USB mass storage specification ... other operating systems ability to access the contents of the device. Another storage options like ..., acting like USB mass storagedevice like MP3 players with USB port , will report that file system ... of which is a USB mass storagedevice. This is often used to simplify distribution and access to drivers ... USB classes, or has additional functionality . An embedded USB mass storagedevice makes it possible ... or selling the device . Complications of the mass storagedevice class Hard drive based devices ... way to send advanced, device specific commands to USB mass storage devices although ... links http www.usb.org developers devclass docs usb msc overview 1.3b.pdf Mass Storagedevice class ... viewvc base head sys dev usb storage USB Mass StorageDevice source code in FreeBSD http www.kernel.org ... source code in Linux Computer bus DEFAULTSORT Usb Mass StorageDevice Class Category Universal Serial ... more details
The IEEE Reynold B. Johnson Data StorageDevice Technology Award was a Institute of Electrical and Electronics Engineers Technical field awards Technical Field Award of the IEEE that was established by the IEEE Board of Directors in 2004 and was discontinued in 2011. The award was presented annually from 2006 2010 for outstanding contributions to the advancement of information storage , with an emphasis on technical contributions in computer data storagedevice technology. The award was named to honor Reynold B. Johnson . The award was presented to three co recipients in 2006, and to individuals from 2007 2010. Recipients of this award received a bronze medal, certificate, and honorarium. Recipients 2006 Eliyahou Harari 2006 Sanjay Mehrotra 2006 Jack Yuan 2007 Mason L. Williams 2008 Stanley H. Charap 2009 Kinam Kim 2010 David B. Bogy External links http www.ieee.org about awards tfas datastorage.html IEEE Reynold B. Johnson Data StorageDevice Technology Award page at IEEE http www.ieee.org documents data storage rl.pdf List of recipients of the IEEE Reynold B. Johnson Data StorageDevice Technology Award Category Science and engineering awards Category Discontinued IEEE level awards Reynold B. Johnson Data StorageDevice Technology Award Award stub ... more details
wikibooks Packing & Moving Household Goods wiktionary storageStorage may refer to tocright Storage of goods Warehouse , a commercial building for storage of goods Self storage , public storage facility Mail storage , storage by mail or delivery service Containers Dry cask storage , storing high level radioactive waste Food storage Intermodal container , cargo shipping Storage tank Information storageStorage memory , a psychological and physiological process Data storagedevice , computer hardware Computer data storage , a computer process and result Users also store different types of data and information. Other Specific storage of an aquifer See also Storage album Storage album , a 1988 album by Merzbow The Storage , a 2011 Finnish film lookfrom intitle Store disambiguation Container disambiguation Inventory disambiguation disambiguation interwiki ca Mem ria da Lager de Speicher fr Stockage pl Zbiornik simple Storage ... more details
wikt deviceDevice is usually a constructed tool , but may refer more specifically to Technology Machine Tool Gadget Improvised explosive device IED Appliancen disambiguation Appliancen , a device for a particular task A component of personal computer hardware Peripheral , any device attached to a computer that expands its functionality Electronic component Nuclear deviceDevice file , an interface of a device driver Other Logotype , or logo, in printing or in law Personal device , in heraldry used to distinguish the bearer it differs from a badge or cognizance primarily because as it is a personal distinction, and not house distinction Rhetorical device , a technique used in writing or speaking United States military award devices , attachments to medal s ribbon denoting special service, participation in a battle, or additional awards Device band See also lookfrom intitle Devise disambiguation Plot device , an object or character in a story whose sole purpose is to advance the plot of the story, or alternatively to overcome some difficulty in the plot disambig ca Dispositiu cs Za zen de Device et Seade es Dispositivo fa ko id Peranti it Dispositivo kk ja pt Dispositivo ru simple Device zh ... more details
wiktionary Object may refer to Object philosophy , a thing, being or concept Entity , something that is tangible and within the grasp of the senses As used in object relations theory object relations theories of psychoanalysis , that to which a subject relates Object grammar , a sentence element, such as a direct object or an indirect object Abstract objectObject abstract , an object which does not exist at any particular time or place Mathematical objectObject mathematics , an abstract object arising in mathematics Group object , a generalization of a group built on more complicated structures than sets Goal , an aim, target or objective Physical body or object, in physics, a collection of masses Object, an entity treated by mathematical category theory Categories, objects, and morphisms category theory 3D modeling 3D model , a representation of a physical object Property type National Register of Historic Places ObjectObject National Register of Historic Places , a classification used by the U.S. National Register of Historic Places object Russian GABTU military vehicle designations In computing Object computer science , a language mechanism for binding data with methods that operate on that data Object oriented programming OOP , in which an object is an instance of a class or array Object file , the output of a compiler or other translator program also known as object code Object Information Processing , an information source for an information processor HTML element Images and objects HTML object element In popular culture Object Le D jeuner en fourrure , a sculpture by M ret Oppenheim Object , a song by The Cure on their 1979 album Three Imaginary Boys Objects from The Lost Room Objects from the 2006 television series The Lost Room Object , a song by Ween ... Obxecto ko io Objekto is Hlutur it Oggetto he ku Heyber mt O ett nl Object ja pl Obiekt pt Objeto desambigua o ro Obiect dezambiguizare ru simple Object sl Predmet ... more details
Unsourced image removed Image ADevice.jpg thumb 105px right A Device attached to medals and ribbon The A Device is an United States military award devices award device of the United States military which is presented as an attachment to the American Defense Service Medal and the Overseas Service Ribbon Air Force Overseas Service Ribbon . The A Device is a bronze colored letter A , pinned to the center of both awards. Atlantic Device in World War II The American Defense Service Medal was the first decoration to use the device and the award was originally known as the Atlantic Device and also as the Axis Device . The A Device was awarded to any member of the United States Navy who, while deployed to the Atlantic Ocean between June 22 and December 7, 1941, engaged in armed conflict, or potential armed conflict, with naval forces of the Germany German Kriegsmarine . Those having done so were awarded the American Defense Service Medal with A Device, the intent being to recognize those who had participated in the undeclared war when the United States of America was assisting United Kingdom Britain with war convoys and German U Boat interdiction. USAF Arctic Device The A Device became obsolete ... States Air Force declared that the A Device would be awarded to those who had received the Air Force ... and Alaska . Now known as the Arctic Device , the A Device is awarded as an attachment to the Air Force Overseas Short Tour Service Ribbon. The device is not authorized for any other United States military decorations. Note, however, that the two representations of the A Device are different. The Atlantic Device does not have feet sans serif , but the Arctic Device does have serif s. Although ... 8, 2007, only Thule Air Base qualifies for this device. External links http www.history.navy.mil medals atlantic.htm Atlantic A Device for American Defense Service Medal Eligibility http wwa.afpc.randolph.af.mil ... exploration it A Device ... more details
Infobox Television show name The Object Is... image File The object is 1963.JPG 230px caption Clark as host in 1963. format Game Show creator presenter Dick Clark narrated runtime approx. 26 Minutes company The Object Is, Inc. country USA network American Broadcasting Company ABC first aired December 30, 1963 last aired March 27, 1964 num episodes 65 Pilot The Object Is is a game show which aired on American Broadcasting Company ABC from December 30, 1963 to March 27, 1964. The series was the first game for host Dick Clark . Mike Lawrence was the announcer. Gameplay Three celebrities and three contestants competed in a game in which they tried to identify people either celebrities, historical figures, or fictional characters from objects typically associated with that person. Each contestant played with two celebrities one who gave a clue and one who received it. For example, if the person was Charles Lindbergh a clue from the first celebrity might be transatlantic airplane if the contestant guessed correctly, it was worth ten points if not, the contestant gave a clue to the second celebrity for seven points. Clues were worth ten points, then seven, then five, then three. If the subject was not guessed after the three point clue, the subject was thrown out. The first contestant to score fifteen points won 75 and the right to team with a celebrity in the Winner s Game , in which they attempted to identify as many celebrities associated with a particular object as possible in thirty ... of TV Game Shows , 3rd Edition ref Broadcast history Object debuted on the second to last day ... shuffle. Object faced the same competition its predecessor did &ndash the Ed McMahon hosted ... four month jump on Object , local programming managed to cause both games to bow in defeat on March ... game shows of the era, Object is completely intact &ndash all 65 episodes, plus the pilot taped November ... imdb title id 0198195 title The Object Is tv.com 10902 The Object Is DEFAULTSORT Object Is Category ... more details
Infobox film name The Storage image caption director Taru M kel producer Markku Tuurna writer Veli Pekka H nninen br Arto Salminen starring Kari Pekka Toivonen music cinematography Jouko Sepp l editing distributor released Film date 2011 12 30 df yes runtime 90 minutes country film Finland language Finnish budget The Storage lang fi Varasto is a 2011 Finnish comedy film directed by Taru M kel . ref cite book title International Film Guide 2012 first Ian Hayden last Smith year 2012 isbn 978 1908215017 page 115 accessdate 24 April 2012 ref ref name cineuropa cite web url http cineuropa.org 2011 nw.aspx?t newsdetail&l en&did 217588 title Finnish audiences want Finnish films admissions 110 up on 2011 accessdate 2012 04 24 work cineuropa ref Cast Kari Pekka Toivonen as Antero Rousku Minttu Mustakallio as Karita Aku Hirviniemi as Raninen Esko Salminen as Kataja Juha Muje as Store manager Tomi Lauri as Rofa Vesa Vierikko as Jylh korpi Hannele Lauri as Aino Vesa Matti Loiri as Mynttinen Jope Ruonansuu as Yk References reflist External links IMDb title 1672215 The Storage DEFAULTSORT Storage Category 2011 films Category 2010s comedy films Category Finnish films Category Finnish language films Finland film stub fi Varasto elokuva ... more details
Memory Storage may refer to Psychological term for Storage memory of mental states Computer hardware that acts as a Data storagedevice Computer process for holding data Computer data storage disambig ... more details
Mergeto record computer science discuss Talk Storage record Merge section into record computer science date September 2009 also redirect from Storage record required In computer science , a storage record is A group of related data, words, or fields treated as a meaningful unit for instance, a Name, Address, and Telephone Number can be a Personal Record . A self contained collection of information about a single object a record is made up of a number of distinct items, called fields. In IBM mainframes , a record is a basic unit of device to program data transfers. Mainframe files, properly called data set IBM mainframe data sets , are traditionally structured collections of records, as opposed to modern byte stream access files. Records may have a fixed length or variable length. In Unix like systems, a number of programs for example, AWK programming language awk , join Unix join , and sort Unix sort are designed to process data consisting of records called Line text file lines each separated by newline s, where each record may contain a number of fields separated by spaces, commas, or some other character. See also Object composition User defined type Category Computer storage compu storage stub de Datensatz he Commons category Record Storage Record Management ... more details
Orphan date February 2009 Cleanup date October 2008 Evolutionary Storage is proposed to counteract the disk devolution process . Degradation in performance over time is a serious and common concern in Hard disk drive magnetic disks . Sometimes, people benchmark their disks when new, and then many months later, and are surprised to find that the disk is getting slower. In fact, the disk most likely has not changed at all, but the second benchmark may have been run on tracks closer to the center of the disk. Modern hard disks employ http www.pcguide.com ref hdd geom tracksZBR c.html zoned bit recording ZBR tracks are grouped into zones. The raw data transfer rate of the disk when reading the outside cylinders is much higher than when reading the inside ones. This is because the tracks on the outside are much longer than the ones on the inside, typically doubling the circumference or more, therefore containing more data, but the angular velocity of the platters is constant regardless of which track is being read. An evolutionary storage system uses object frequency to cluster frequent data ... cost on a flash memory. This technique can be implemented in a device driver or controller . No changes to the file system are required. This is a black box design, which automatically infers object frequency in a disk drive. Unlike this, White Box or Gray Box design relies on storage front ends, such as a file system, to directly or indirectly pass semantic information to obtain object frequency in a storage system. The strategy is to move data to their optimal locations during idle periods ... practical for a storage system, because frequency distribution is relatively stable, it is unnecessary ... be acceptable to spend one hour every week on running Object Mover to update the layout. References Frank Wang, Yuhui Deng, Na Helian, Evolutionary Storage Speeding up a Magnetic Disk by Clustering ... storage technologies ... more details
. CMD Command an object used for calling programs that allows users to prompt for their parameters can ... devices, and source code, depending on sub type . DTAARA Data area small bits of storage used to store ... controller for lines, workstations, etc. . DEVD Device description communications device for lines, workstations ... object of arbitrary size up to 16T . Creating an object usually but not always involves a AS 400 ... an object uses DLT DLTJOBD, DLTUSRPRF, etc. , displaying an object uses DSP DSPJOBD, DSPUSRPRF .... DEFAULTSORT As 400 Object Category AS 400 operating system stub ... more details
needed date March 2008 See also data storagedevice Data storage , a broader perspective Magnetism ...Magnetic storage and magnetic recording are terms from engineering referring to the storage of data on a magnet ized medium. Magnetic storage uses different patterns of magnetization in a magnetizable ... or more disk read and write head read write heads . As of 2011, magnetic storage media, primarily hard ... of computing, the term magnetic storage is preferred and in the field of audio and video production ... a matter of preference. Other examples of magnetic storage media include floppy disk s, magnetic recording tape , and magnetic stripes on credit cards. History Magnetic storage in the form of audio recording ... of 1900 magnetic recorder was invented by Valdemar Poulsen in 1898. Poulsen s device recorded ... the first magnetic tape recorder . Early magnetic storage devices were designed to record Analog signal analog audio signals. Computer and now most audio and video magnetic storage devices record digital data. In old computers, magnetic storage was also used for primary storage in a form of magnetic ... . Unlike modern computers, magnetic tape was also often used for secondary storage. Magnetic recording .... Technical details Access method Magnetic storage media can be classified as either sequential access ... on the storage media take different amounts of time to access. For a hard disk this time is typically ... of magnetic storage media are for computer data mass storage on hard disks and the recording of analog ... tape. Magnetic tape data storage Digital tape and tape library tape libraries are popular for the high capacity data storage of archives and backups. Floppy disk s see some marginal usage, particularly in dealing with older computer systems and software. Magnetic storage is also widely used in some ... . Future A new type of magnetic storage, called Magnetoresistive Random Access Memory or MRAM, is being ... ref However, with storage density and capacity orders of magnitude smaller than an Hard Disk HDD ... more details
wiktionary data wiktionary storage Data storage can refer to Computer data storage memory, components, devices and media that retain digital data computing computer data used for computing for some interval of time. Any data storagedevice that records stores or retrieves reads information data from any medium, including the medium itself. See also Information processing Signal processing index card disambig ... more details
In telecommunication , the term managed object has the following meanings 1. In a telecommunications network network , an abstract representation of network resources that are managed. With representation , we mean not the actual device that is managed, but also the device driver , that communicates with the device. An example of a printer as a managed object is the Window computing window that shows information about the printer, such as the location, printer status, printing progress, paper choice, and printing margins. The database, where all managed objects are stored, is called Management Information Base . In contrast with a CI , a managed object is dynamic and communicates with other network recourses that are managed. Note A managed object may represent a physical entity, a network service, or an abstraction of a resource that exists independently of its use in management. 2. In telecommunications management, a resource within the telecommunications environment that may be managed through the use of Business operations operation , administration business administration , repair and maintenance maintenance , and provisioning OAMP application protocols. FS1037C MS188 Category Network management ... more details
Infobox website name Google Cloud Storage type File hosting service language English language English current status Active url URL https developers.google.com storage registration Required owner Google launch date May 19, 2010 Google Cloud Storage is a Representational state transfer RESTful online storage web service for storing and accessing your data on Google s infrastructure. The service combines ... to Amazon S3 online storage service. Feasibility User activation is resourced through the API Developer ... is part of Google Labs , and is free up until a generous usage quota. Design Google Storage GS stores ... an access control list associated with each bucket and object. Bucket names and keys are chosen so ... bucket object code code nowiki http nowiki bucket .commondatastorage.googleapis.com object code Features Interoperability Google Storage is interoperable with other cloud storage tools and libraries that work with services such as Amazon S3 and Eucalyptus computing Eucalyptus Systems . dubious date December 2011 Consistency Upload operations to Google Storage are atomic, providing strong read after write consistency for all upload operations. Access Control Google Storage uses access control list ACLs to manage object and bucket access. An ACL consists of one or more entries, each granting a specific permission to a scope. Permissions define what someone can do with an object ..., public access, etc. Resumable Uploads Google Storage provides a resumable data transfer feature .... References refbegin cite web title Google Cloud Storage Getting Started url http code.google.com apis storage docs getting started.html date 2010 cite web title Google Cloud Storage Pricing url http code.google.com apis storage docs overview.html pricing date 2010 cite web title Google Cloud Storage Developer Guide url http code.google.com apis storage docs developer guide.html date 2010 cite web title GSUtil Tool url http code.google.com apis storage docs gsutil.html date 2010 refend External ... more details
also Data storagedevice the broader topic of all devices that store data. Optical Media board disc ...Refimprove date December 2009 Optical storage is a term from engineering referring to the storage of data on an optically readable medium. Data is recorded by making marks in a pattern that can be read back with the aid of light , usually a beam of laser light precisely focused on a spinning disc. An older example, that does not require the use of computers, is microform . There are other means of optically storing data and new methods are in development. Optical storage differs from other computer data storage data storage techniques that make use of other technologies such as magnetism or semiconductor s. Optical storage can range from a single drive reading a single CD ROM to multiple drives reading multiple discs such as an optical jukebox . Single compact discs can hold around 700MB megabyte s and optical jukebox es can hold much more ref Compact Disc http en.wikipedia.org wiki Compact Disc ref . The term optical drive usually refers to a device in a computer that can read CD ROM s or other optical disc s. It is estimated that in the year 2007, optical storage represents 27 of the world s technological capacity to store information ref name HilbertLopez2011 http www.sciencemag.org content 332 6025 60 The World s Technological Capacity to Store, Communicate, and Compute Information , especially http www.sciencemag.org content suppl 2011 02 08 science.1200970.DC1 Hilbert SOM.pdf ... and Magnetic technologies to store data. Laser turntable a device that optically reads mechanical data storage media. HDSS Holographic Data Storage Systems potential new optical storage technology. 3D optical data storage potential new optical storage technology. Optical Storage Technology Association industry trade association References Reflist Optical storage media DEFAULTSORT Optical Storage Category Storage media compu storage stub ar et Optiline andmekandja es Almacenamiento ... more details
s device as with similar capabilities provided by specific storage controllers and are in fact possible ... The software or device providing storage virtualization becomes a common disk manager in the virtualized .... Moving data off an over utilized storagedevice. Moving data onto a faster storagedevice ... monolithic storagedevice and can be managed centrally. However, traditional storage controller ... software or device. It applies to the actual physical storage controllers and the hosts, their operating ... Evaluator Group explains Storage Virtualization ref Host based Storagedevice based Network based Host ... NFS Automatic mounting e.g. autofs Storagedevice based Like host based virtualization, several categories ... path between the host and storage. All I O requests and their data pass through the device. Hosts perform I O to the virtualization device and never interact with the actual storagedevice. The virtualization device in turn performs I O to the storagedevice. Caching of data, statistics about ...refimprove date July 2011 Storage virtualization or storage virtualisation is a concept and term used within computer science. Specifically, storage systems may use virtualisation virtualization concepts as a tool to enable better functionality and more advanced features within the storage system. Broadly speaking, a storage system is also known as a storage array or Disk array or a filer. Storage ... fast and reliable storage for computing and data processing. Storage systems are complex, and may be thought of as a special purpose computer designed to provide storage capacity along with advanced data protection features. Disk drives are only one element within a storage system, along with hardware and special purpose embedded software within the system. Storage systems can provide either block accessed storage, or file accessed storage. Block access is typically delivered over Fibre Channel ... File System protocol NFS or CIFS protocols. Within the context of a storage system, there are two ... more details
In the Linux kernel , the device mapper serves as a generic Software framework framework to map one block device onto another. It forms the foundation of LVM2 and Enterprise Volume Management System EVMS , software RAID s, dm crypt disk encryption, and offers additional features such as file system Snapshot computer storage snapshots . Device mapper works by processing data passed in from a virtual block device , that it itself provides, and then passing the resultant data on to another block device. Applications Applications like LVM2 and Enterprise Volume Management System EVMS that need to create new mapped devices talk to the device mapper via the libdevmapper.so Library computer science shared library , which in turn issues ioctl s to the dev mapper control device node . Developers can also access device mapper from shell script s via the dmsetup tool. Device mapper applications LVM2 Enterprise Volume Management System EVMS kpartx dm crypt dmraid providing access to RAID configurations via device mapper cryptoloop deprecated Multipath I O Multipath using device mapper multipath ref http sources.redhat.com dm Device mapper Resource Page Bot generated title ref The Linux version of TrueCrypt http visa.cs.fiu.edu ming dmcache dmcache A generic block level disk cache http www.acis.ufl.edu ming dmcache dmcache A generic block level disk cache External links http sources.redhat.com dm Device mapper home at Red Hat cite web url http linuxgazette.net 114 kapil.html title Right To Your Own Devices work Linux Gazette year 2005 month May an article that illustrates the use of various device mapper targets http people.redhat.com heinzm sw dmraid readme userspace tool to set up software RAID using various RAID metadata formats http lwn.net Articles 124703 Multipath support in the device mapper LWN.net References reflist Category Linux kernel features linux stub de Device Mapper fr Carte des p riph riques ... more details
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