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Sizes of rich media files are changing the rules: managing them is the trick.



Fueled by the widespread use of computers and the falling prices for digital storage, the world is generating 1.5 to 2 exabytes (1x[10.sup.18]) of original digital content each year, and this number is growing. Five exabytes would equal all of the spoken words by humans in the history of the world. The ever-lower cost to generate digital content and the continually lower costs to store and retrieve data make the growth of digital content an event of infinite duration. Most data used to come from governments, businesses, newspapers, and publishing houses. Today, individuals create the bulk of the world's original content. Estimates from the landmark University of California at Berkeley (body, education) University of California at Berkeley - (UCB)

See also Berzerkley, BSD.

http://berkeley.edu/.

Note to British and Commonwealth readers: that's /berk'lee/, not /bark'lee/ as in British Received Pronunciation.
 study (www.sims. berkeley.edu/research/projects/how-much-info/inde.html) on digital information indicate that as much as 93% of information produced each year is stored digitally. Other estimates show that paper usage grows as much as 40% when email is implemented. Who would have ever thought that email would be the biggest driv er of paper consumption?

The long-term growth opportunities for content- and rich-media-management solutions abound. Rich media consists of voice, text, graphic images, audio, HDTV (High Definition TV) A set of digital television (DTV) standards that offer the highest resolution and sharpest picture. Although some HDTV sets are available in standard (rather square) screen sizes, the overwhelming majority of sets are wide screen, which eliminates , 3-D graphics, and movies. New and emerging digital applications will continue to fuel many years of explosive growth for storage as terabyte-plus data-warehouses, VCR VCR: see videocassette recorder.
VCR
 in full videocassette recorder

Electromechanical device that records, stores on a videotape cassette, and plays back on a TV set recorded images and sound.
 to HDTV quality movies, the coming digital cinema, electronic voice and video-mail, digital security systems, digital photography and the "Second Internet or Hypemet" all will drive major increases in data rates and capacity. Approximately one terabyte is now required for a digital theater complex. A single movie production may require over 800 terabytes to complete. The worldwide commercial video storage market including television, movies, commercial production, and video distribution could reach Over 700 petabytes (700x1015th) by 2006. A robust personal-video market also exists for recording movies and video at home. This market, like the data-storage market, is expected to exceed 900 petabytes by 2006. For these markets, backup, replication or mirroring techniques will double or triple the total storage demand, pushing the rich-content market into the exabytes. In addition, the consumer electronics and mobile markets are just beginning to enter advanced-growth phases on a worldwide basis. Rich media and digital content requires much larger multimedia objects (voice, text, video, games, and graphics) and has pushed storage management requirements far beyond the capabilities of available management tools only adding to the upcoming storage disruption.

In addition to digital information, a variety of non-digital information applications remain, including analog audio, analog video The original video recording method that stores continuous waves of red, green and blue intensities. In analog video, the number of rows is fixed. There are no real columns, and the maximum detail is determined by the frequency response of the analog system. , many types historical scientific data, books, maps, old music, photographs, and medical images. As these applications become digital, the amount of rich content further increases. Paper is estimated to generate over 200 terabytes per year, X-rays between 15 and 20 terabytes per year, and music downloads Onto CDs anywhere upwards of 50 terabytes per year. College campuses in the United States United States, officially United States of America, republic (2005 est. pop. 295,734,000), 3,539,227 sq mi (9,166,598 sq km), North America. The United States is the world's third largest country in population and the fourth largest country in area.  have just reported that about 75% of their campus bandwidth is now consumed from downloading music. Camcorders are estimated to record over 300 terabytes of data per year on a variety of magnetic tape formats. The rate of adoption for a new consumer and rich media technology has been shrinking. The time frame it took to achieve 5% penetration of the consumer market:

* Color TV = 12 years

* VCR = 7 years

* CD players = 4 years

* Camcorders = 4 years

What we don't know Don't know (DK, DKed)

"Don't know the trade." A Street expression used whenever one party lacks knowledge of a trade or receives conflicting instructions from the other party.
 is which mechanism(s) will be the preferred method of delivery of rich media to the appropriate markets.

Estimates now show that over 50% of the world's digital data sits within the well-publicized last-mile boundary and is generated by individuals, not large companies or governments. The last-mile problem refers to the performance problems associated with transmitting information to and from individuals either at home or to those who don't have high-speed fiber broadband access See broadband and wireless broadband.  Cable modem cable modem

Modem used to convert analog data signals to digital form and vise versa, for transmission or receipt over cable television lines, especially for connecting to the Internet.
 and DSL DSL
 in full Digital Subscriber Line

Broadband digital communications connection that operates over standard copper telephone wires. It requires a DSL modem, which splits transmissions into two frequency bands: the lower frequencies for voice (ordinary
 are the two most popular choices for providing higher speed Internet access See how to access the Internet.  and each have an availability index of about 95%, well below standard telephone connections. Presently, cable modem often represents the fastest, cheapest and most reliable solution for most applications.

Various considerations exist for all three options. Performance bottlenecks slow cable modem and DSL speeds to as low as i megabit per second A megabit per second (abbreviated as Mbit/s, Mbps, or mbps) is a unit of data transfer rate equal to 1,000,000 bits per second. Because there are 8 bits in a byte, a transfer speed of 8 megabits per second (8 Mbps) is equivalent to 1,000,000 bytes , far below their speed limits. Cable and DSL are still much faster than the 56 kilobits per second (unit) kilobits per second - (kbps, kb/s) A unit of data rate where 1 kb/s = 1000 bits per second. This contrasts with units of storage where 1 Kb = 1024 bits (note upper case K).  of a traditional phone-line modem in use on most of the last-mile market. The top speeds of each technology are seldom realized. Cable performance suffers when bandwidth is shared with neighbors and becomes congested con·gest·ed
adj.
Affected with or characterized by congestion.


congested ENT adjective Referring to a boggy blood-filled tissue. See Nasal congestion.
. Unlike cable, DSL uses a private line requires that you reside within two to three miles from the provider's central office and performance is very distance sensitive. Satellites are the most expensive solution and have far fewer subscribers than either DSL or cable. Availability levels are unpredictable and are affected by weather and a variety other obstacles causing signal interference. Satellite has the advantage that it can serve geographically remote areas not covered not covered Health care adjective Referring to a procedure, test or other health service to which a policy holder or insurance beneficiary is not entitled under the terms of the policy or payment system–eg, Medicare. Cf Covered.  by DSL or cable. Satellite services normally provide about 150 channels while large c able systems typically provide 75-100 channels. With all of the tradeoffs now apparent, no clear winner for solving the last mile problem has emerged and the stakes are getting very high based on the market potential. Though the early leaders have been cable and DSL, a wireless or satellite solution is the most likely longrange solution. Until a clear winner emerges, all methods will co-exist to meet demand.

Approximately 10% of the digital data produced in the world resides on magnetic disk storage and an estimated 90% of digital storage resides on removable storage media such as tape, optical (CD, DVD DVD: see digital versatile disc.
DVD
 in full digital video disc or digital versatile disc

Type of optical disc. The DVD represents the second generation of compact-disc (CD) technology.
) or small-diameter removable disks. Rigid disk Same as hard disk.  drives, magnetic tape drives, optical disks, flexible drives and flash memory will all play bigger roles for storing rich content. Much of the new demand is coming from the consumer electronics and mobile users who demand a balance between price, capacity and features with flash memory beginning to dominate the small wireless market. Flash memory is projected to generate over $5 billion in revenues in 2004 from approximately 100 million units shipped. The unique combination of complex objects, along with different availability and bandwidth requirements Bandwidth requirements (communications)

The channel bandwidths needed to transmit various types of signals, using various processing schemes. Every signal observed in practice can be expressed as a sum (discrete or over a frequency continuum) of sinusoidal
 pose several new challenges for the data storage industry. In addition, a well-defined discipline for effectively managing very large and complex objects hasn't advanced much beyond academic levels. The sheer size of rich media files is changing the rules for moving data from place to place. Transmission times will soon exceed current requirements and redefine infrastructure requirements from both a bandwidth but more importantly a latency issue. Doing nothing is a form of management, just not a very good one. Unlike having the option to not manage storage in the past, we will have no choice but to manage it in the future.
COPYRIGHT 2002 West World Productions, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2002, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Author:Moore, Fred
Publication:Computer Technology Review
Geographic Code:1USA
Date:Oct 1, 2002
Words:1134
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