Transcript of The Evolution and Adaptation of Storage Devices
The Evolution and Adaptation of Storage Devices Pre-1960 - 1970 1971 - 1980 1981 - 1990 1991 - 2000 2001 - 2010 2011 - Future The Hard Drive Hard drives as we know them first appeared in 1973. They quickly gained popularity and by the 1980's, were dominating the market. This was mainly due to the fact that hard drives offered increasing amounts of space... ...And that they provided quick and easy access to stored data. The External Hard Drive In recent years, due to more software being released, Hard Drives are becoming increasingly full. The External Hard Drive This led to the development of External Hard Drives, which gave users more storage space and the ability to transport it around. The Hard Drive The Floppy Disk The Floppy Disk was first introduced in 1971 by a company called IBM. The Floppy Disk It is a small magnetic disk inside a protective plastic case. Although large at the time, it could only store around 1.44 MB of data, and transfer was slow. The Floppy Disk Back in its day, it was primarily used to keep small backup files for personal computers. Although storing little, they were cheap and easy to use. The CD-ROM The Compact Disc-Read Only Memory was a major innovation in the field of storage devices as it was the first medium to use laser rather than magnetic technology. The CD-ROM However, saved data could not be removed or altered. This lead to CD-ROMs mainly being used for software distribution. The CD-R The Compact Disc-Recordable enabled users to put up to 650MB of data onto the disc. Since it could be easily read by other computers, it served as the ideal storage medium for Multimedia applications. The CD-R The CD-RW The Compact Disc-Rewritable was another revolutionary step forward in data storage: The CD-RW It enabled users to have a high-capacity storage medium, through which they could store, edit and delete files. The DVD The Digital Versatile Disk was developed in the 1990s. It is currently one of the highest capacity laser-read mediums, with a capacity ranging from 4.7-17GB. The DVD Due to their very high capacity, they are mainly used to store movie and sound files (as they take up the most space). Flash Memory Flash Memory was first developed for small devices, such as digital cameras. However, it quickly became clear that the technology had greater uses. Flash Memory The USB memory stick was developed soon after. With its 128MB - 4GB storage capacity despite its minute size, it was another breakthrough in storage devices. Flash Memory The USB vastly grew in popularity because of these features. They are ideal to use as portable storage for schoolwork or as backup. Magnetic Tape Magnetic Tape was available from the mid 1970's. It was commonly used in cassettes, as it is a serial medium. Magnetic Tape It was also used to back up whole networks due to its high (120GB) capacity. It was later fazed out by the hard drive. Punch Cards Punch Cards are the oldest form of data storage, and were first used in 1725! Punch Cards Their uses ranged from simple instructions for machines to pre-recorded telegrams. Despite being considered 'outdated', they are still widely used today in places such as factories, to 'check in' and 'out' employees. They were hugely popular due to being quite cheap. Punch Cards The Cloud The Cloud is a revolutionary storage medium which allows the user to store and access their data on a remote server via the internet. The Cloud The first major use of The Cloud came in 2008, when Eucalyptus Systems launched a series of private Clouds. The Cloud The name is derived from the cloud symbol used to represent the complex infrastructure of The Cloud. The Cloud One of the reasons why The Cloud is so popular is the fact that it allows 'simple' computers to run demanding programs (such as a computer game) flawlessly. The Cloud This because the Cloud's servers contain all the 'computing power' required! The Holographic Disc Holographic Versatile Discs (HVDs) were first released mid 2008. Their ability to store several terabytes of information on a 10cm disc has created many uses for them, such as a mobile network backup. The Holographic Disc RAID RAID (Redundant Array of Independent Discs) is a storage system which stores data on separate disc drives. RAID The data is stored on different 'RAID levels' depending on what level or performance is required. SSD Solid-State Drivers are essentially hard drives, but with a twist:Full transcript
They store data using electrical charge rather than magnetism, and contain no moving parts! SSD Although half the size and gaining in popularity, Solid-State Drivers won't be taking over the role of the Hard Drive for some time yet. End of Presentation Thank you for listening!