Reliability, availability and serviceability ( RAS ), also known as reliability, availability, and maintainability ( RAM ), is a computer hardware engineering term involving reliability engineering , high availability , and serviceability design. The phrase was originally used by IBM as a term to describe the robustness of their mainframe computers .
21-597: (Redirected from RAS ) [REDACTED] Look up ras , Ras , RAS , rás , râs , rãs , rǡs , răs- , or Raś in Wiktionary, the free dictionary. Ras or RAS may refer to: Arts and media [ edit ] RAS Records Real Authentic Sound, a reggae record label Rundfunk Anstalt Südtirol , a south Tyrolese public broadcasting service Rás 1 , an Icelandic radio station Rás 2 , an Icelandic radio station Raise A Suilen ,
42-466: A Japanese band Organizations [ edit ] Railway Air Services , a UK airline Rajasthan Administrative Service , India Remote Astronomical Society Observatory of New Mexico Richard Allen Schools , a charter school system in Ohio, USA Richardson Adventist School , now North Dallas Adventist Academy IEEE Robotics and Automation Society Royal Air Squadron , a flying club in
63-449: A SunOS raster format RAS algorithm , an algorithm for iterative proportional fitting in economics RAS supergroup or SAR supergroup, a plant clade Recirculating aquaculture system , an aquarium system that filters water rather than requiring new water supplies Registration, Admission and Status , a telephony protocol under H.323 Reliability, availability and serviceability of computer hardware Remote access service , on
84-506: A capital city of medieval Serbian state of Raška Replenishment at sea , providing naval ships with supplies while at sea Catepanate of Ras , province of the Byzantine Empire See also [ edit ] Ra (disambiguation) Rass (disambiguation) Raz (disambiguation) Rasa (disambiguation) Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with
105-755: A character from Tales of Eternia Ras (Ninjago) , character in Ninjago Other uses [ edit ] Ras (fascism) , a title for a regional leader in Ethiopia under fascist Italy Ras (title) , an Ethiopian aristocratic and court title, as in Ras Tafari Ras cheese , a variety popular in Egypt RAS syndrome , "redundant acronym syndrome" syndrome Rás Tailteann , an annual cycling race in Ireland Stari Ras ,
126-557: A charter school system in Ohio, USA Richardson Adventist School , now North Dallas Adventist Academy IEEE Robotics and Automation Society Royal Air Squadron , a flying club in the UK Royal American Shows , an American travelling carnival company operating from the 1920s to the 1990s Royal Asiatic Society of Great Britain and Ireland Royal Astronomical Society , UK, founded 1820 Russian Academy of Sciences Biology [ edit ] RAAS,
147-533: A complication of acute promyelocytic leukemia Ras superfamily , a superfamily of signalling proteins Ras subfamily , a family of signalling proteins Science and technology [ edit ] .ras , a SunOS raster format RAS algorithm , an algorithm for iterative proportional fitting in economics RAS supergroup or SAR supergroup, a plant clade Recirculating aquaculture system , an aquarium system that filters water rather than requiring new water supplies Registration, Admission and Status ,
168-502: A fictional villain in Batman media Ras Muhamad (born 1982), Indonesian reggae singer Nicholas Furlong (musician) or Ras Rassius "Ras" Luine, a character from Tales of Eternia Ras (Ninjago) , character in Ninjago Other uses [ edit ] Ras (fascism) , a title for a regional leader in Ethiopia under fascist Italy Ras (title) , an Ethiopian aristocratic and court title, as in Ras Tafari Ras cheese ,
189-459: A hardware-oriented term, systems thinking has extended the concept of reliability-availability-serviceability to systems in general, including software : Note the distinction between reliability and availability: reliability measures the ability of a system to function correctly, including avoiding data corruption, whereas availability measures how often the system is available for use, even though it may not be functioning correctly. For example,
210-463: A network Reusable Asset Specification of software Row Address Strobe in dynamic random-access memory Russian Accounting Standards People [ edit ] Ras (surname) , several people Ras, the nickname for someone with the given name of Rasmus (given name) Ra's al Ghul , a fictional villain in Batman media Ras Muhamad (born 1982), Indonesian reggae singer Nicholas Furlong (musician) or Ras Rassius "Ras" Luine,
231-423: A reggae record label Rundfunk Anstalt Südtirol , a south Tyrolese public broadcasting service Rás 1 , an Icelandic radio station Rás 2 , an Icelandic radio station Raise A Suilen , a Japanese band Organizations [ edit ] Railway Air Services , a UK airline Rajasthan Administrative Service , India Remote Astronomical Society Observatory of New Mexico Richard Allen Schools ,
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#1732772219456252-444: A server may run forever and so have ideal availability, but may be unreliable, with frequent data corruption. Physical faults can be temporary or permanent: Transient and intermittent faults can typically be handled by detection and correction by e.g., ECC codes or instruction replay (see below). Permanent faults will lead to uncorrectable errors which can be handled by replacement by duplicate hardware, e.g., processor sparing, or by
273-443: A telephony protocol under H.323 Reliability, availability and serviceability of computer hardware Remote access service , on a network Reusable Asset Specification of software Row Address Strobe in dynamic random-access memory Russian Accounting Standards People [ edit ] Ras (surname) , several people Ras, the nickname for someone with the given name of Rasmus (given name) Ra's al Ghul ,
294-498: A variety popular in Egypt RAS syndrome , "redundant acronym syndrome" syndrome Rás Tailteann , an annual cycling race in Ireland Stari Ras , a capital city of medieval Serbian state of Raška Replenishment at sea , providing naval ships with supplies while at sea Catepanate of Ras , province of the Byzantine Empire See also [ edit ] Ra (disambiguation) Rass (disambiguation) Raz (disambiguation) Rasa (disambiguation) Topics referred to by
315-427: Is different from Wikidata All article disambiguation pages All disambiguation pages ras [REDACTED] Look up ras , Ras , RAS , rás , râs , rãs , rǡs , răs- , or Raś in Wiktionary, the free dictionary. Ras or RAS may refer to: Arts and media [ edit ] RAS Records Real Authentic Sound,
336-458: Is different from Wikidata All article disambiguation pages All disambiguation pages Reliability, availability and serviceability Computers designed with higher levels of RAS have many features that protect data integrity and help them stay available for long periods of time without failure . This data integrity and uptime is a particular selling point for mainframes and fault-tolerant systems . While RAS originated as
357-399: The renin–angiotensin system , a hormone system that regulates blood pressure Recurrent aphthous stomatitis or canker sores Renal artery stenosis , the narrowing of the renal arteries Respiratory airway secretory cell , cells in humans and some other mammals that maintain airway health Reticular activating system in the brain, regulating wakefulness Retinoic acid syndrome ,
378-449: The UK Royal American Shows , an American travelling carnival company operating from the 1920s to the 1990s Royal Asiatic Society of Great Britain and Ireland Royal Astronomical Society , UK, founded 1820 Russian Academy of Sciences Biology [ edit ] RAAS, the renin–angiotensin system , a hormone system that regulates blood pressure Recurrent aphthous stomatitis or canker sores Renal artery stenosis ,
399-460: The narrowing of the renal arteries Respiratory airway secretory cell , cells in humans and some other mammals that maintain airway health Reticular activating system in the brain, regulating wakefulness Retinoic acid syndrome , a complication of acute promyelocytic leukemia Ras superfamily , a superfamily of signalling proteins Ras subfamily , a family of signalling proteins Science and technology [ edit ] .ras ,
420-497: The same term [REDACTED] This disambiguation page lists articles associated with the title Ras . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Ras&oldid=1208895926 " Categories : Disambiguation pages Place name disambiguation pages Disambiguation pages with given-name-holder lists Hidden categories: Short description
441-407: The title Ras . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Ras&oldid=1208895926 " Categories : Disambiguation pages Place name disambiguation pages Disambiguation pages with given-name-holder lists Hidden categories: Short description
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