Its somewhat harder to lose than a usb flash drive. Types of storage devices physical components or materials on which data is stored are called storage media. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Msps should consider these benefits and drawbacks when switching their backupasaservice baas offerings to cloud storage. Optical media offer the following advantages for storing data over conventional magnetic disks. Overrunning backups are the bane of many an administrator, and remediation can be quite problematic during the working day. This difference can be detected, so the data can be read. Advantages very large storage capacity, so ideal for storing hd movies. The data on the storage medium is read by bouncing the laser beam off the surface of the medium. Optical media can have a shelf life greater than 50 years. Two main categories of storage technology used today are magnetic storage and optical storage. Types of storage devices there are three main types of storage devices.
Compact audio cassette are one example of magnetic tape storage devices. Jukeboxes are storage units with built in robotics to automate access to hundreds of pieces of media and numerous optical drives. Igcse ict chapter 3 storage devices and media flashcards. Optical data storage benefits longevity optical recording has been used for over 10,000 years in human. Storage devices are also called secondary storage devices backing storage devices external storage devices or auxiliary storage devices. It can store anywhere from 160 gigabytes to 2 terabytes. Data is read by shining the laser beam onto the surface of the disc. With proper care, optical media can last a long time, depending on what kind of optical media you choose. One of the major benefits of solid state storage is that is has no moving parts. One common storage type that youll find is optical storage. Archive owners must understand the changing roles that optical and magnetic technologies are playing and will play in the future. Now its time to discuss advantages and disadvantages of online data storage. There are so many different kinds of optical formats for saving information, but they all work basically the same.
Explore 3d optical data storage with free download of seminar report and ppt in pdf and doc format. Even more expensive than the optical disk slightly slower than the hard disk. The advantages of optical media ibm knowledge center. Each item is significant enough to warrant a dedicated article, but this should be a good primer for anyone considering moving their backups from onpremise disk to cloud storage. Memory devices in a system the purpose of the memory device is to store the information and for the information retrieval. By storing your data online you are reducing the burden of your hard disk, which means you are eventually saving disk space. When cavemen started making scratches on the walls of their caves, we have not only an application of writeonce readymany worm technology, but a data encoding method as well. Solid state drive a hard disk made of a solidstate electronic. The magnetic and optical disk comes under the category of secondary storage devices. Storage devices hardware and network technologies ccea. Typically, data is written to optical media, such as compact discs cds and dvds.
About ten years ago it was becoming evident that optical. The advantages of an optical scanner include being easy and quick in converting printed text into an electronic and editable form. For more explanation about the optical disk, types of optical disk, their advantages, and examples, lets read the complete article. Hardware components that readwrite to storage media are called storage devices. Blu ray disk, can hold a lot more data than a standard dvd, meaning it can store. Worm optical storage can be used to archive a large amount of. Optical storage, electronic storage medium that uses lowpower laser beams to record and retrieve digital binary data.
Pearson edexcel international gcse information and. The need to devise these devices has emerged because the previous semiconductor storage devices have very limited capabilities, for example, the cost of storing the information in such devices is very high. Compared with a hard disk drive, a solidstate drive with a similar storage capacity can be twice as expensive. As youll learn by reading the following comparison table, the ssd is a clear winner. In opticalstorage technology, a laser beam encodes digital data onto an optical, or laser, disk in the form of tiny pits arranged in concentric tracks on the disks surface. Advantages and disadvantages of optical storage answers. Optical media, such as cds and dvds, have practically replaced cassette tapes for portable audio storage. Magnetic disk storage is used in mechanical hard drives to. Because optical media are written to and read with a laser, a bit of data is written to a much smaller area on the optical platter disc than the area that is required to record a bit on a conventional magnetic disk. Optical storage is any storage method in which data is written and read with a laser for archival or backup purposes. These magnetic tape storage advantages and disadvantages show some reasons why.
Optical computing was a hot research area in the 1980s. The need for secondary storage memory and storage aqa. To find the pdf, see publications for the ibm informix 11. What are the advantages and disadvantages of storage devices. Take note that hdds remain a popular storage device among manufacturers and consumers because there are more accessible and affordable than ssd.
This function allows more data storage in the same space. Advantages and disadvantages of online data storage. The ssd solidstate drive is another storage solution and is slowly replacing the majority of hard disk drives. Initially targeted as a potential replacement for hard disk drives hdds in. Advantages of secondary storage include efficiency, simplicity. Storage devices secondary storage hard disk the hard disk drive is the main, and usually largest, data storage device in a computer. Advantages of secondary storage also include an increase in backup efficiency and a reduction in the duration the backups require. Optical storage devices save data as patterns of dots that can be read using light. Review of various data storage techniques international journal. In this chapter, you will learn about the many types of secondary storage devices including their. Each type of computer storage device has its own advantages, and you may find.
Replace cumbersome paper and microfiche with worryfree, longlife optical storage. You complete the document by filling in the blanks with words from the list. Uses, advantages and disadvantages of storage media. There are three types of storage devices, including three types of hard disks ssd. Advantages and disadvantages of secondary storage advantages possesses the capacity to store enormous amounts of information safe reliable permanent disadvantages the information on the secondary device has to be first located, then move to the primary memory or.
Mass storage capacity on the order of gigabytes mountable unmountable storage units. For several years, proponents have spoken of optical storage as a nearfuture replacement for both hard drive s in personal computers and tape backup in mass. Many devices can support new types with new firmware low cost, backwards compatibility. Hard disk speed is the speed at which content can be read and written on a hard disk. The compact nature of optical disk systems gives them a great advantage where space is li mited. Worm optical storage can be used to archive a large amount of data. This translates to more expensive computers or other devices with solidstate drive systems than those that have hard drive systems. If the beam hits a dot it is reflected back differently to how it would be if there were no dot.
The main draw is the high storage capacity and low cost. Advantages n disadvantages about optical storage answers. This is one of the primary disadvantages of a solidstate drive. Optical disks after the human memory, optical storage is perhaps the oldest storage technology in use. A device driver b optical mark reader c touch screen d control software total for question 14 1 mark. Can hold a lot more data than a standard dvd, meaning it can store movies with better picture and sound quality. Ibm i optical storage uses files that are stored in directories and files that are stored in subdirectories similar to unix or pcbased file systems. An introduction summary magnetic storage is slowly replacing optical disks for digital archives.
Typically a fully automatic operation, requires no user intervention aside from changing tape cartridges. These new types of files require secondary storage devices with much greater capacity than floppy disks. A storage device is used in the computers to store. Optical storage media stores data on a disc as a number of data dots that can be read using light usually a laser beam. Optical media offer the following advantages for storing data over. Optical platters offer a high degree of stability because they are far less susceptible than magnetic disks to corruption by environmental influences such as electromagnetic fields. An optical drive is any drive that uses a lens to read and write data, such as a. Optical storage devices offer significant advantages over other highcapacity storages devices, such as tape and microfilm, with faster access times and a hierarchicaltype file organization. The stark difference between a hard disk drive and a solidstate drive also speaks of their unique advantages and disadvantages.
Also explore the seminar topics paper on 3d optical data storage with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year computer science engineering or cse students for the year 2015 2016. An optical disk has the capacity of storing much more data as compared to other devices and that originates from the fact that with the help of laser beams, people can have more controlled and focused system. Data storage has expanded from text and numeric files to include digital music files, photographic files, video files, and much more. Pdf optical data storage advances and compact disc market acceptance. Electronic media or storage devices are of different types based on technique used for storing information. Raid redundant array of inexpensive disks is a system developed whereby two or more disks are physically linked together to form a single logical, large capacity storage device that offers a number of advantages over conventional hard disk storage devices.
Flash memory based, optical storage dvd, cd or more traditional magnetic. Magnetic tapes are used in reels of different lengths, for example 200, 600, 1200 feet etc. Secondary storage refers to any device that can store data, in addition to main memory. The fill in the blanks link takes you to a microsoft word document which contains a widerange of questions designed to test your knowledge on types and components of computer systems. Our optical library allowed us to store huge amounts of data in a device that provides permanent worm features, ensuring data could not be changed once it is written to the device. Optical disks last up to seven decades longer than traditional storage options.
D pdf total for question 16 1 mark total for section a 16 marks. Capacity, performance and price of optical storage devices are continually improving. Start studying igcse ict chapter 3 storage devices and media. Difference between magnetic disk and optical disk with. Explain different types of storage devices perfect. The answers to the fill in the blanks task can be found on pages 3 4 of the document. A laser beam used to read and write data on an optical disk.
A cordless mouse either mechanical or optical transmits data using wireless technology such as radio waves or infrared light waves. It is slower device than magnetic disk or optical disk. Researchers have developed working 3d optical data storage devices, but the technology is not yet commercially available due to design issues that need to be addressed. Avantages and disadvantages of backing up storage devices. An optical disc is much sturdier than tape or a floppy disk.
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