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Data degradation
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==References== {{Reflist|refs= <ref name="NAA">{{cite web|title=Preserving magnetic media|url=https://www.naa.gov.au/information-management/storing-and-preserving-information/preserving-information/preserving-magnetic-media|access-date=3 November 2020|website=National Archives of Australia|quote=High temperature and humidity and fluctuations may cause the magnetic and base layers in a reel of tape to separate, or cause adjacent loops to block together. High temperatures may also weaken the magnetic signal, and ultimately de-magnetise the magnetic layer.}}</ref> <ref name="qpx-g">{{cite web |title=QPxTool glossary |url=https://qpxtool.sourceforge.io/glossar.html |website=qpxtool.sourceforge.io |publisher=QPxTool |access-date=22 July 2020 |date=2008-08-01 |ref=QPx-Glossary}}{{Better source needed|date=February 2025}}</ref> <ref name="Riss_1993">{{cite web|last=Riss|first=Dan|date=July 1993|title=Conserve O Gram (number 19/8) Preservation Of Magnetic Media|url=https://www.nps.gov/museum/publications/conserveogram/19-08.pdf|website=nps.gov|publisher=National Park Service / Department of the Interior (US)|page=2|publication-place=Harpers Ferry, West Virginia|quote=The longevity of magnetic media is most seriously affected by processes that attack the binder resin. Moisture from the air is absorbed by the binder and reacts with the resin. The result is a gummy residue that can deposit on tape heads and cause tape layers to stick together. Reaction with moisture also can result in breaks in the long molecular chains of the binder. This weakens the physical properties of the binder and can result in a lack of adhesion to the backing. These reactions are greatly accelerated by the presence of acids. Typical sources would be the usual pollutant gases in the air, such as sulphur dioxide (SO2) and nitrous oxides (NOx), which react with moist air to form acids. Though acid inhibitors are usually built into the binder layer, over time they can lose their effectiveness.}}</ref> <ref name="O'Gorman_1996">{{cite journal |last1=O'Gorman |first1=T. J. |last2=Ross |first2=J. M. |last3=Taber |first3=A. H. |last4=Ziegler |first4=J. F. |last5=Muhlfeld |first5=H. P. |last6=Montrose |first6=C. J. |last7=Curtis |first7=H. W. |last8=Walsh |first8=J. L. |title=Field testing for cosmic ray soft errors in semiconductor memories|journal=IBM Journal of Research and Development |date=January 1996 |volume=40 |issue=1 |pages=41–50 |doi=10.1147/rd.401.0041}}</ref> <ref name="Normand_1996">{{cite journal|last=Normand|first=Eugene|date=December 1996|url=http://pdf.yuri.se/files/art/2.pdf|title=Single Event Upset at Ground Level|journal=[[IEEE Transactions on Nuclear Science]]|volume=43|issue=6|pages=2742–2750 |doi=10.1109/23.556861|bibcode=1996ITNS...43.2742N |archive-url=https://web.archive.org/web/20131021190327/http://pdf.yuri.se/files/art/2.pdf|archive-date=21 October 2013|url-status=dead}}</ref> <ref name="IASA_1997">{{cite web|url=http://www.iasa-web.org/content/information-bulletin-no-22-july-1997 |title=Bronzed CD alert!|work=IASA Information Bulletin no. 22|date=July 1997|access-date=3 August 2007|archive-url=https://web.archive.org/web/20110722224026/http://www.iasa-web.org/content/information-bulletin-no-22-july-1997|archive-date=22 July 2011|url-status=dead}}</ref> <ref name="Baker_2006-p224">{{harvnb|Baker et al.|2006|p=224}}: "While many faults are detected at the time an error causes them, some occur silently. These are called 'latent faults.' There are many sources of latent faults, but media errors are the best known. While a [[head crash]] would be detectable, bit rot might not be uncovered until the affected faulty data are actually accessed and audited. As another example, a sector on a disk might become unreadable; this would not be detected until the next read of that sector. Further, a sector might be readable but contain incorrect information due to a previous misplaced sector write."</ref> <ref name="Triches_2006">{{cite web|last=Triches|first=Robert|url=https://www.aftonbladet.se/nyheter/a/ddR9kw/forskare-billiga-cd-skivor-haller-bara-i-tva-ar|title=Forskare: Billiga cd-skivor håller bara i två år|website=[[Aftonbladet]]|date=16 March 2006|access-date=10 April 2024}}</ref> <ref name="Bonwick_2009">{{cite web|last=Bonwick|first=Jeff|date=2009|title=ZFS: The Last Word in File Systems|publisher=Storage Networking Industry Association (SNIA)|url=http://www.snia.org/sites/default/files2/sdc_archives/2009_presentations/monday/JeffBonwickzfs-Basic_and_Advanced.pdf |access-date=4 March 2013|url-status=dead|archive-url=https://web.archive.org/web/20130921055345/http://www.snia.org/sites/default/files2/sdc_archives/2009_presentations/monday/JeffBonwickzfs-Basic_and_Advanced.pdf|archive-date=21 September 2013}}</ref> <ref name="Menart_2011">{{cite journal|last1=Menart|first1=Eva|last2=De Bruin|first2=Gerrit|last3=Strlič|first3=Matija|title=Dose–response functions for historic paper|journal=Polymer Degradation and Stability|date=9 September 2011|volume=96|issue=12|pages=2029–2039|doi=10.1016/j.polymdegradstab.2011.09.002|url=https://discovery.ucl.ac.uk/1335848/1/Menart_PDSt_2011_EPS.pdf|access-date=5 June 2023}}</ref> <ref name="Salter_2014">{{cite web |last=Salter|first=Jim |title=Bitrot and atomic COWs: Inside "next-gen" filesystems|date=15 January 2014|publisher=[[Ars Technica]] |url=https://arstechnica.com/information-technology/2014/01/bitrot-and-atomic-cows-inside-next-gen-filesystems/|access-date=15 January 2014|archive-url=https://web.archive.org/web/20150306225935/http://arstechnica.com/information-technology/2014/01/bitrot-and-atomic-cows-inside-next-gen-filesystems/|archive-date=6 March 2015|url-status=dead}}</ref> <ref name="Wlodarz_2014">{{cite web|last=Wlodarz|first=Derrick|title=Windows Storage Spaces and ReFS: is it time to ditch RAID for good?|date=15 January 2014|publisher=Betanews|url=http://betanews.com/2014/01/15/windows-storage-spaces-and-refs-is-it-time-to-ditch-raid-for-good/|access-date=2014-02-09}}</ref> <ref name="ShengLance_2015">{{cite web|last=Sheng Lance|first=Li|url=https://www.techinasia.com/talk/data-decay-affect-business|title=What is data decay?|date=22 July 2015|website=[[Tech in Asia]]|access-date=10 April 2024}}</ref> <ref name="PCMag">{{cite web|url=https://www.pcmag.com/encyclopedia/term/data-fade|title=Definition of data degradation|website=[[PC Magazine]]|access-date=10 April 2024}}</ref> <ref name="Rouse_2020">{{cite web|last=Rouse|first=Margaret|url=https://www.techopedia.com/definition/33108/bit-rot|title=What is Bit Rot?|website=Techopedia Dictionary|date=25 March 2020|access-date=10 April 2024}}</ref> <ref name="Zaman_2020">{{Cite journal |last1=Zaman |first1=Rashid |last2=Hassani |first2=Marwan |date=July 2020 |title=On Enabling GDPR Compliance in Business Processes Through Data-Driven Solutions |journal=SN Computer Science |language=en |volume=1 |issue=4 |doi=10.1007/s42979-020-00215-x |issn=2662-995X|doi-access=free}}</ref> <ref name="Li_2022">{{cite journal |last1=Li |first1=Qianhui |last2=Wang |first2=Qi |last3=Yang |first3=Liu |last4=Yu |first4=Xiaolei |last5=Jiang |first5=Yiyang |last6=He |first6=Jing |last7=Huo |first7=Zongliang |title=Optimal read voltages decision scheme eliminating read retry operations for 3D NAND flash memories |journal=Microelectronics Reliability |date=April 2022 |volume=131 |pages=114509 |doi=10.1016/j.microrel.2022.114509|bibcode=2022MiRe..13114509L }}{{Page needed|date=February 2025}}</ref> <ref name="Malachowska_2021">{{cite journal|last1=Małachowska|first1=Edyta|last2=Pawcenis|first2=Dominika|last3=Dańczak|first3=Jacek|last4=Paczkowska|first4=Joanna|last5=Przybysz|first5=Kamila|date=26 March 2021|title=Paper Ageing: The Effect of Paper Chemical Composition on Hydrolysis and Oxidation|journal=[[Polymers (journal)|Polymers]]|volume=13|issue=7|page=1029|doi=10.3390/polym13071029|pmid=33810293|pmc=8036582|doi-access=free}}</ref> <ref name="Yu_2022">{{cite journal|last1=Yu|first1=Wenwu|last2=Jiang|first2=Jingjing|last3=Zhai|first3=Yue|last4=Xu|first4=Peng|date=2022-05-20|editor-last=Rajakani|editor-first=Kalidoss|title=Perceived Integrity of Distributed Streaming Media Based on AWTC-TT Algorithm Optimization|journal=[[Wireless Communications and Mobile Computing]]|pages=1–17|doi=10.1155/2022/7522174|doi-access=free|issn=1530-8677}}</ref> <ref name="Hakob_2023">{{cite web|url=https://formstory.io/learn/data-decay/|title=Data Decay: What are the Causes?|website=FormStory|author-first=Mike|author-last=Hakob|date=27 December 2023 |access-date=10 April 2024}}{{Better source needed|date=February 2025}}</ref> }}
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