MIS-discuss about data storage

How a company kkep their data for 20 or 30 yeras?????


from my research and gather information from internet, currently a company will choose one or several type of tool to keep their storages( data storages)..the tool used also depend on the company's budget and capacity of data that company want to store and keep..for example like magnetic storage( wire storage, magnetic tape, drum memory....etc), optical storages( 3d optical data storages, holographic data storages....etc), elecrical ( floating-gate transistor...etc) ( sources : wikipeda)and many morebut the most comman used was magnetic tape...


Magnetic tape

Magnetic tape is a medium for magnetic recording, made of a thin magnetizable coating on a long, narrow strip of plastic. Most audio, video and computer data storage is this type. It was developed in Germany, based on magnetic wire recording. Devices that record and play back audio and video using magnetic tape are tape recorders and video tape recorders. A device that stores computer data on magnetic tape is a tape drive (tape unit, streamer).

Magnetic tape revolutionized broadcast and recording. When all radio was live, it allowed programming to be prerecorded. At a time when gramophone records were recorded in one take, it allowed recordings in multiple parts, which mixed and edited with tolerable loss in quality. It is a key technology in early computer development, allowing unparalleled amounts of data to be mechanically created, stored for long periods, and to be rapidly accessed.




Today, other technologies can perform the functions of magnetic tape. In many cases these technologies are replacing tape. Despite this, innovation in the technology continues and tape is still widely used.

Over years, magnetic tape can suffer from deterioration called sticky-shed syndrome. Caused by absorption of moisture into the binder of the tape, it can render the tape unusable.

Magnetic tape has been used for data storage for over 50 years. In this time, many advances in tape formulation, packaging, and data density have been made. Modern magnetic tape is most commonly packaged in cartridges and cassettes. The device that performs actual writing or reading of data is a tape drive. Autoloaders and tape libraries are frequently used to automate cartridge handling.

When storing large amounts of data, tape can be substantially less expensive than disk or other data storage options. Tape storage has always been used with large computer systems. Modern usage is primarily as a high capacity medium for backups and archives. As of 2008, the highest capacity tape cartridges (Sun StorageTek T10000B, IBM TS1130) can store 1 TB of uncompressed data.

(source , http://en.wikipedia.org/wiki/Magnetic_tape_data_storage )





after several days doing some research and reading article from internet, i had found one article or news that quite interesting..this was about new disc that can store data for 1000 years.....i am asking myself,whether this product will be leader in future and dominant interm of data storages due to long-life data can be store??? pls give your opinion on this matter.....the article as follow



Millennial Disc To Keep Data For 1,000 Years

Monday, July 20, 2009 - by Shawn Oliver
Have you ever wondered just how amazing it would be to store your data on an optical disc for 1,000 years? Probably not, considering a) it's not remotely possible right now and 2) that's an awful lot longer than even the best lifespan you could ever hope for. But on the other hand, it sure would make the act of opening time capsules a lot more interesting, wouldn't it? Well, assuming those still on Earth a thousand years from now can find a so-called "optical drive" on whatever has replaced "eBay."

Believe it or not, we're being told that technology is on the way soon that will allow us to store data on optical discs for a full millennium. And we're not even talking about next year--we're talking about September 1, 2009. A Utah-based startup by the name of Millenniata will soon release "a new archive disk technology to preserve data at room temperature for 1,000 years." One thousand years! The special disc will be called the Millennial Disc, and while it looks almost identical to a standard DVD, it's definitely not constructed from the same materials.





According to a report, the disc is made of hard, "persistent" materials, though the actual make-up is being kept secret for obvious reasons. Put simply, data is literally carved into the discs with an enhanced laser using the company's Millennial Writer. The best part? Once the information is burned in, it can be read by a standard DVD player. Of course, this little company hasn't gone at everything alone; a swarm of well-known outfits have a hand in the creation, notably Philips.

At first, anyway, the company isn't expected to market these to mere consumers. We have all ideas the first batches will be extraordinarily expensive, so they'll be aimed at venues without cash to afford them. Places like data collection agencies, archival institutions, churches, libraries and government entities. Eventually, we'd expect the disc to makes it way into the retail segment as well as into businesses, where sensitive financial records and such could be safely stored for, well, ever.

Barry Lunt, a BYU professor of information technology, is the company's co-founder. As predicted, he's pretty excited about the possibilities here:


"In the beginning I never thought it could replace all recordable disks. But he now believes the immense consumer market will be within reach as the price of Millenniata's technology comes down, 'as it certainly will.'"


In time, Lunt expects volume pricing to bring the $30 per disc charge down steeply, though there's no indication of when that'll happen. Now, to wait and see if this magical sounding technology ever actually makes it to market...


source:http://hothardware.com/News/Millennial-Disc-To-Keep-Data-For-1000-Years/