 |
 |
Thanks for this Susan - it's useful to me too. The info you quote comes from the archive builders site! Janet R Jurica Senior Assistant Registrar Secretariat The University of Leeds Leeds LS2 9JT tel +44(0)113 343 3625 fax +44(0)113 343 4198 -----Original Message----- From: The UK Records Management mailing list [mailto:[log in to unmask]] On Behalf Of Susan Mansfield Sent: 24 May 2006 12:32 To: [log in to unmask] Subject: Re: How do you illustrate the voulume of digitally borne documents in a physical form ? Barbara, I use the following information from University of Berkeley's report "How Much Information? 2003" to help people visualise their documents and records. In a similar question I posed to the list I was also referred to http://www.archivebuilders.com/. I have also, in the past worked, on the basis One filing cabinet = 10,000 pages or 1GB = 2 filing cabinets although I can no longer recall where I got that from. Regards, Susan Susan Mansfield Records Manager Strategy Directorate Scottish Enterprise 150 Broomielaw 5 Atlantic Quay Glasgow G2 8LU Direct Line: 0141 228 2468 Fax 0141221 3217 E-mail: [log in to unmask] How big is five exabytes? If digitized, the nineteen million books and other print collections in the Library of Congress would contain about ten terabytes of information; five exabytes of information is equivalent in size to the information contained in half a million new libraries the size of the Library of Congress print collections. It would take about 30 feet of books to store the equivalent of 800 MB of information on paper. Table 1.1: How Big is an Exabyte? Kilobyte (KB) 1,000 bytes OR 103bytes 2 Kilobytes: A Typewritten page (we often calculate this as reams of paper and work out how far down e.g. Church Street it would stretch using the Gmap pedometer http://www.gmap-pedometer.com/ <http://www.gmap-pedometer.com/> ) 100 Kilobytes: A low-resolution photograph. Megabyte (MB) 1,000,000 bytes OR 106 bytes 1 Megabyte: A small novel OR a 3.5 inch floppy disk. 2 Megabytes: A high-resolution photograph. 5 Megabytes: The complete works of Shakespeare. (we use the latest Harry Potter novel as a comparison!) 10 Megabytes: A minute of high-fidelity sound. 100 Megabytes: 1 meter of shelved books. 500 Megabytes: A CD-ROM. Gigabyte (GB) 1,000,000,000 bytes OR 109 bytes 1 Gigabyte: a pickup truck filled with books. 20 Gigabytes: A good collection of the works of Beethoven. 100 Gigabytes: A library floor of academic journals. Terabyte (TB) 1,000,000,000,000 bytes OR 1012 bytes 1 Terabyte: 50000 trees made into paper and printed. 2 Terabytes: An academic research library. 10 Terabytes: The print collections of the U.S. Library of Congress 400 Terabytes: National Climactic Data Center (NOAA) database. Petabyte (PB) 1,000,000,000,000,000 bytes OR 1015 bytes 1 Petabyte: 3 years of EOS data (2001). 2 Petabytes: All U.S. academic research libraries. 20 Petabytes: Production of hard-disk drives in 1995. 200 Petabytes: All printed material. Exabyte (EB) 1,000,000,000,000,000,000 bytes OR 1018 bytes 2 Exabytes: Total volume of information generated in 1999. 5 Exabytes: All words ever spoken by human beings. Source: Many of these examples were taken from Roy Williams "Data Powers of Ten" web page at Caltech. A tree can produce about 80,500 sheets of paper, ________________________________ From: The UK Records Management mailing list [mailto:[log in to unmask]] On Behalf Of McGrath, Barbara Sent: 24 May 2006 11:48 To: [log in to unmask] Subject: How do you illustrate the voulume of digitally borne documents in a physical form ? Hi, I want to illustrate the volume of digitally borne (eg WORD, PDF, jpgs) in a physical form i.e. what would 1.5 million documents stored on a shared network drive look like or another comparison is what would 400Gb of documents stored on a shared network drive look like. I am looking for a physical comparison to what this would look like in paper form. A comparison in say, length or volume would be good e.g. documents laid end to end would be "x" miles or a comparison in size say, it would fill "x" (full length) filling cabinets. Does anyone have any nifty formulas for working out a rough comparison from digitally borne documents into a physical form ? Thank you, Barbara McGrath Information Officer Fareham Borough Council www.fareham.gov.uk <http://www.fareham.gov.uk/> 01329 824529 ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com ********************************************************************** ______________________________________________________________________ Scottish Enterprise Network http://www.scottish-enterprise.com Address and Contact Numbers 150 Broomielaw 5 Atlantic Quay Glasgow G2 8LU. Tel: +44 (0)141 248 2700. Fax: +44 (0)141 221 3217 Message is sent in confidence for the addressee only. It may contain legally privileged information. The contents are not to be disclosed to anyone other than the addressee. Unauthorised recipients are requested to preserve this confidentiality and to advise the sender immediately of any error in transmission.