{"id":32381,"date":"2019-10-31T21:46:44","date_gmt":"2019-10-31T18:46:44","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novyj-tip-ssd-hranilishh-sokratit-energopotreblenie-v-tsod-kak-eto-rabotaet\/"},"modified":"2019-10-31T21:46:44","modified_gmt":"2019-10-31T18:46:44","slug":"novyj-tip-ssd-hranilishh-sokratit-energopotreblenie-v-tsod-kak-eto-rabotaet","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/administrirovanie\/novyj-tip-ssd-hranilishh-sokratit-energopotreblenie-v-tsod-kak-eto-rabotaet","title":{"rendered":"En ny typ av SSD-lagring kommer att minska energif\u00f6rbrukningen i datacenter \u2013 hur fungerar det?","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<h5>Systemet kommer att halvera elkostnaderna.<\/h5>\n<p>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/it-grad\/blog\/449476\/\"><img decoding=\"async\" alt=\"En ny typ av SSD-lagring kommer att minska energif\u00f6rbrukningen i datacenter \u2013 hur fungerar det?\" src=\"\/wp-content\/uploads\/2019\/04\/c0e6d8bce0dfe2c6d5940f9fcecc98d2.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><br \/>\n<i>\/ \u0444\u043e\u0442\u043e <noindex><a rel=\"nofollow\" href=\"https:\/\/www.flickr.com\/photos\/trekkyandy\/32411334526\/\">Andy Melton<\/a><\/noindex> CC BY-SA<\/i><\/p>\n<h2>Varf\u00f6r beh\u00f6vs en ny arkitektur<\/h2>\n<p>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/www.datacenterdynamics.com\/opinions\/power-consumption-data-centers-global-problem\/\">Enligt Data Centre Dynamics<\/a><\/noindex>, \u00e5r 2030 kommer elektroniska apparater att konsumera 40% av all energi som produceras p\u00e5 jorden. Ungef\u00e4r 20% av denna m\u00e4ngd kommer att komma fr\u00e5n IT-sektorn och datacenter. Enligt <noindex>data<\/noindex> europeiska analytiker kommer datacenter redan att \"ta\" 1,4% av all elektricitet. Det f\u00f6rv\u00e4ntas att denna <noindex><a rel=\"nofollow\" href=\"https:\/\/www.datacenterknowledge.com\/industry-perspectives\/achieving-data-center-energy-efficiency\">siffra kommer att v\u00e4xa till 5% \u00e5r 2020.<\/a><\/noindex>.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nEn betydande del av energin konsumeras av SSD-lagringsenheter. Mellan 2012 och 2017 \u00f6kade andelen SSD:er i datacenter <noindex><a rel=\"nofollow\" href=\"http:\/\/large.stanford.edu\/courses\/2017\/ph240\/yu2\/\">fr\u00e5n 8 till 22%.<\/a><\/noindex>\u00c4ven om SSD:er anv\u00e4nder en tredjedel mindre kraft (<noindex><a rel=\"nofollow\" href=\"https:\/\/www.fujifilmusa.com\/products\/tape_data_storage\/case_studies\/pdf\/Hyperscale_Heat_Wave.pdf\">PDF, s. 13<\/a><\/noindex>), \u00e4r elkostnaderna fortfarande stora i datacenter.<\/p>\n<p>F\u00f6r att minska energif\u00f6rbrukningen hos SSD:er i datacenter har ingenj\u00f6rer vid MIT utvecklat en ny arkitektur f\u00f6r SSD-lagring. Den kallas LightStore och g\u00f6r det m\u00f6jligt att koppla lagringsenheterna direkt till datacentrets n\u00e4tverk, utan att g\u00e5 via lagringsservrar. Enligt <noindex><a rel=\"nofollow\" href=\"http:\/\/news.mit.edu\/2019\/solid-state-drives-flash-storage-data-center-efficiency-0403\">ord<\/a><\/noindex> f\u00f6rfattarna kommer systemet att halvera elkostnaderna.<\/p>\n<h2>Hur det fungerar<\/h2>\n<p>\nLightStore \u00e4r en nyckel-v\u00e4rde flash-lagring d\u00e4r anv\u00e4ndarf\u00f6rfr\u00e5gningar till lagringsenheterna visas som nycklar. Dessa skickas sedan till en server som frig\u00f6r data kopplad till denna nyckel.<\/p>\n<p>Systemet <noindex>inneh\u00e5ller<\/noindex> den inbyggda energieffektiva processorn, DRAM och NAND-minnet. Den styrs av en kontrollenhet och speciell programvara. Kontrollern ansvarar f\u00f6r att hantera NAND-arrayerna, medan programvaran hanterar KV-f\u00f6rfr\u00e5gningar och lagrar nyckel-par. <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/LSM-%D0%B4%D0%B5%D1%80%D0%B5%D0%B2%D0%BE\">Arkitekturen av programvaran bygger p\u00e5<\/a><\/noindex>LSM-tr\u00e4d<\/p>\n<p>, som anv\u00e4nds i m\u00e5nga moderna databashanteringssystem.<\/p>\n<p><img decoding=\"async\" alt=\"En ny typ av SSD-lagring kommer att minska energif\u00f6rbrukningen i datacenter \u2013 hur fungerar det?\" src=\"\/wp-content\/uploads\/2019\/04\/17158b9e9f6a32d6e7e325cabf598909.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nArkitekturens schema kan visualiseras som f\u00f6ljer: <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/YCSB\">Schemat visar de grundl\u00e4ggande komponenterna i LightStore. Kluster av noder arbetar med nyckel-v\u00e4rde-par. Applikationsservrar ansluter till systemet via adaptrar. Dessa omvandlar klientf\u00f6rfr\u00e5gningar (t.ex. fread() fr\u00e5n POSIX API) till KV-f\u00f6rfr\u00e5gningar. Arkitekturen har ocks\u00e5 separata adaptrar f\u00f6r<\/a><\/noindex>YCSB<\/p>\n<p>, blocklagring (baserat p\u00e5 BUSE-modulen) och filsystem. <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%A1%D0%BE%D0%B3%D0%BB%D0%B0%D1%81%D0%BE%D0%B2%D0%B0%D0%BD%D0%BD%D0%BE%D0%B5_%D1%85%D0%B5%D1%88%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5\">Genom att f\u00f6rdela f\u00f6rfr\u00e5gningar anv\u00e4nder adaptern<\/a><\/noindex>konsistent hashning. Denna anv\u00e4nds i system som Redis eller Swift. Genom nyckeln f\u00f6r KV-f\u00f6rfr\u00e5gan genererar adaptern en hashnyckel, vars v\u00e4rde best\u00e4mmer den m\u00e5linvertering.<\/p>\n<p>Kapaciteten f\u00f6r LightStore-klustret skalas linj\u00e4rt - det r\u00e4cker med att ansluta ytterligare noder till n\u00e4tverket. I vissa fall kan det vara n\u00f6dv\u00e4ndigt att k\u00f6pa nya switchar. Men utvecklarna har f\u00f6rsett varje nod med extra platser f\u00f6r att ansluta NAND-chip.<\/p>\n<h2>Potentialen i arkitekturen<\/h2>\n<p>\nIngenj\u00f6rer fr\u00e5n MIT s\u00e4ger att kapaciteten f\u00f6r l\u00f6sningen baserad p\u00e5 LightStore \u00e4r 620 Mbit\/s f\u00f6r 10-gigabit Ethernet. En nod f\u00f6rbrukar 10 W ist\u00e4llet f\u00f6r de vanliga 20 W (i SSD-system som anv\u00e4nds av datacenter idag). Dessutom tar utrustningen upp dubbelt s\u00e5 lite plats.<\/p>\n<p>Nu arbetar utvecklarna med att f\u00f6rb\u00e4ttra vissa aspekter. Till exempel kan LightStore inte hantera f\u00f6rfr\u00e5gningar \u00f6ver intervall och sm\u00e5 f\u00f6rfr\u00e5gningar. Dessa funktioner kommer att l\u00e4ggas till i framtiden, eftersom LightStore anv\u00e4nder LSM-tr\u00e4d. Systemet har ocks\u00e5 f\u00f6r n\u00e4rvarande ett begr\u00e4nsat antal adaptrar - YCSB- och block-adaptrar st\u00f6ds. I framtiden kommer LightStore att kunna hantera SQL-f\u00f6rfr\u00e5gningar och andra.<\/p>\n<h2>Andra utvecklingar<\/h2>\n<p>\nSommaren 2018 presenterade Marvell, f\u00f6retaget som utvecklar lagringssystem, en ny serie SSD-kontroller baserade p\u00e5 AI-system. Utvecklarna integrerade NVIDIA:s acceleratorer f\u00f6r djupinl\u00e4rning i standardkontrollere f\u00f6r datacenter och klientapplikationer. Resultatet blev en sj\u00e4lvst\u00e4ndig arkitektur som f\u00f6rbrukar mindre energi j\u00e4mf\u00f6rt med klassiska SSD-kontroller. F\u00f6retaget hoppas att systemet kommer att hitta till\u00e4mpningar inom kantber\u00e4kningar, analys av stora data och IoT.<\/p>\n<p>Nyligen uppdaterades serien av lagringsenheter fr\u00e5n Western Digital Blue. I april presenterade utvecklarna en l\u00f6sning - WD Blue SSD baserad p\u00e5 teknologier fr\u00e5n SanDisk, som WD f\u00f6rv\u00e4rvade f\u00f6r ett \u00e5r sedan. De uppdaterade WD Blue SSD:erna utm\u00e4rker sig genom \u00f6kad prestanda och energieffektivitet. Arkitekturen har byggts p\u00e5 specifikationen <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/NVM_Express\">NVMe<\/a><\/noindex>, vilket \u00f6ppnar upp f\u00f6r \u00e5tkomst till SSD:er anslutna via PCI Express.<\/p>\n<p>Denna specifikation \u00f6kar effektiviteten hos SSD-lagringsenheter med ett stort antal samtidiga f\u00f6rfr\u00e5gningar och p\u00e5skyndar \u00e5tkomsten till data. Dessutom g\u00f6r NVMe det m\u00f6jligt att standardisera gr\u00e4nssnittet f\u00f6r SSD - h\u00e5rdvarutillverkare beh\u00f6ver inte l\u00e4ngre <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/NVM_Express#%D0%9F%D1%80%D0%B5%D0%B4%D0%BF%D0%BE%D1%81%D1%8B%D0%BB%D0%BA%D0%B8_%D0%BF%D0%BE%D1%8F%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F\">sl\u00f6sa resurser<\/a><\/noindex> p\u00e5 att utveckla unika drivrutiner, anslutningar och formfaktorer.<\/p>\n<h2>Framtidsutsikter<\/h2>\n<p>\nMarknaden f\u00f6r SSD-lagringsenheter i datacentra g\u00e5r mot en f\u00f6renkling av arkitekturen, automatisering av lagringskomponenternas arbete och \u00f6kad energieffektivitet. Ingenj\u00f6rernas utveckling fr\u00e5n MIT l\u00f6ser den senare uppgiften. F\u00f6rfattarna <noindex><a rel=\"nofollow\" href=\"http:\/\/news.mit.edu\/2019\/solid-state-drives-flash-storage-data-center-efficiency-0403\">r\u00e4knar med<\/a><\/noindex>, att LightStore kommer att bli branschstandard f\u00f6r SSD-lagring i datacenter. Man kan anta att det i framtiden kommer att dyka upp nya, \u00e4nnu mer effektiva arkitekturer baserade p\u00e5 detta.<\/p>\n<p>\nN\u00e5gra material fr\u00e5n Den F\u00f6rsta bloggen om f\u00f6retags-IaaS:<\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/iaas-blog.it-grad.ru\/ploshhadki\/razvitie-data-centrov-texnologicheskie-trendy-2\/\">Utveckling av datacenter: teknologiska trender<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/iaas-blog.it-grad.ru\/kejsy\/hybrid-cloud-for-avito\/\">Avito.ru: hur IaaS-molnet hj\u00e4lper f\u00f6retaget att organisera sin verksamhet<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/iaas-blog.it-grad.ru\/proizvoditelnost\/kak-povysit-energoeffektivnost-data-centra\/\">Hur man \u00f6kar energieffektiviteten i datacentret<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/iaas-blog.it-grad.ru\/novosti\/chto-nuzhno-znat-o-pci-dss-obzor-standarta\/\">Vad du beh\u00f6ver veta om PCI DSS: En \u00f6versikt av standarden<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/iaas-blog.it-grad.ru\/tendencii\/pochemu-korporativnye-zakazchiki-ispolzuyut-virtualnye-mashiny-a-ne-kontejnery\/\">Varf\u00f6r f\u00f6retag anv\u00e4nder virtuella maskiner ist\u00e4llet f\u00f6r containrar<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/iaas-blog.it-grad.ru\/tendencii\/kak-iaas-pomogaet-razvivat-biznes-tri-zadachi-kotorye-reshit-oblako\/\">Hur IaaS hj\u00e4lper f\u00f6retag att v\u00e4xa: Tre uppgifter som molnet l\u00f6ser<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/iaas-blog.it-grad.ru\/tendencii\/besservernye-vychisleniya-v-oblake-trend-sovremennosti-ili-neobxodimost\/\">Serverl\u00f6sa ber\u00e4kningar i molnet \u2013 en modern trend eller en n\u00f6dv\u00e4ndighet?<\/a><\/noindex><\/li>\n<\/ul>\n<p>K\u00e4lla: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/it-grad\/blog\/449476\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>C\u0438\u0441\u0442\u0435\u043c\u0430 \u0443\u043c\u0435\u043d\u044c\u0448\u0438\u0442 \u0440\u0430\u0441\u0445\u043e\u0434\u044b \u043d\u0430 \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u044d\u043d\u0435\u0440\u0433\u0438\u044e \u0432 \u0434\u0432\u0430 \u0440\u0430\u0437\u0430. \/ \u0444\u043e\u0442\u043e Andy Melton CC BY-SA \u0417\u0430\u0447\u0435\u043c \u043d\u0443\u0436\u043d\u0430 \u043d\u043e\u0432\u0430\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0430 \u041f\u043e \u043e\u0446\u0435\u043d\u043a\u0430\u043c Data Centre Dynamics, \u043a 2030 \u0433\u043e\u0434\u0443 \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u043d\u043d\u044b\u0435 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 \u0431\u0443\u0434\u0443\u0442 \u043f\u043e\u0442\u0440\u0435\u0431\u043b\u044f\u0442\u044c 40% \u0432\u0441\u0435\u0439 \u0432\u044b\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u043c\u043e\u0439 \u043d\u0430 \u043f\u043b\u0430\u043d\u0435\u0442\u0435 \u044d\u043d\u0435\u0440\u0433\u0438\u0438. \u041f\u0440\u0438\u0431\u043b\u0438\u0437\u0438\u0442\u0435\u043b\u044c\u043d\u043e 20% \u043e\u0442 \u044d\u0442\u043e\u0433\u043e \u043e\u0431\u044a\u0435\u043c\u0430 \u043f\u0440\u0438\u0434\u0435\u0442\u0441\u044f \u043d\u0430 \u0418\u0422-\u0441\u0435\u043a\u0442\u043e\u0440 \u0438 \u0434\u0430\u0442\u0430-\u0446\u0435\u043d\u0442\u0440\u044b. \u041f\u043e \u0434\u0430\u043d\u043d\u044b\u043c \u0435\u0432\u0440\u043e\u043f\u0435\u0439\u0441\u043a\u0438\u0445 \u0430\u043d\u0430\u043b\u0438\u0442\u0438\u043a\u043e\u0432, \u0426\u041e\u0414 \u0443\u0436\u0435 \u00ab\u0437\u0430\u0431\u0438\u0440\u0430\u044e\u0442\u00bb 1,4% \u0432\u0441\u0435\u0433\u043e [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":24194,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-32381","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"C\u0438\u0441\u0442\u0435\u043c\u0430 \u0443\u043c\u0435\u043d\u044c\u0448\u0438\u0442 \u0440\u0430\u0441\u0445\u043e\u0434\u044b \u043d\u0430 \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u044d\u043d\u0435\u0440\u0433\u0438\u044e \u0432 \u0434\u0432\u0430 \u0440\u0430\u0437\u0430.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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