{"id":89145,"date":"2020-07-19T07:42:25","date_gmt":"2020-07-19T05:42:25","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/ne-tolko-razmer-imeet-znachenie-ili-chto-nam-prines-novyj-protokol-nvme"},"modified":"2020-07-19T07:42:25","modified_gmt":"2020-07-19T05:42:25","slug":"ne-tolko-razmer-imeet-znachenie-ili-chto-nam-prines-novyj-protokol-nvme","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/ne-tolko-razmer-imeet-znachenie-ili-chto-nam-prines-novyj-protokol-nvme","title":{"rendered":"Nemcsak a m\u00e9ret sz\u00e1m\u00edt, vagy mit hozott nek\u00fcnk az \u00faj NVMe protokoll","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>K\u00f6zismert t\u00f6rt\u00e9net. Amint megjelennek a nagyobb teljes\u00edtm\u00e9ny\u0171 sz\u00e1m\u00edt\u00f3g\u00e9pek, amint n\u0151 a processzorok teljes\u00edtm\u00e9nye \u00e9s az adatt\u00e1rol\u00f3k kapacit\u00e1sa, \u00e9s a felhaszn\u00e1l\u00f3 megk\u00f6nnyebb\u00fclten fels\u00f3hajt \u2013 \u201emost m\u00e1r mindent el\u00e9g lesz, nem kell sz\u0171k\u00f6lk\u00f6dn\u00f6m \u00e9s sp\u00f3rolnom\u201d, szinte azonnal megjelennek \u00faj ig\u00e9nyek, amelyek egyre t\u00f6bb er\u0151forr\u00e1st k\u00f6vetelnek, \u00faj szoftverek, amelyek szint\u00e9n \u201enem ismerik a hat\u00e1rokat\u201d. \u00d6r\u00f6k probl\u00e9ma. V\u00e9gtelen k\u00f6rforg\u00e1s. \u00c9s v\u00e9gtelen keres\u00e9s az \u00faj megold\u00e1sok ut\u00e1n. Felh\u0151alap\u00fa t\u00e1rol\u00f3k, neur\u00e1lis h\u00e1l\u00f3zatok, mesters\u00e9ges intelligencia \u2013 m\u00e9g neh\u00e9z is elk\u00e9pzelni, milyen hatalmas teljes\u00edtm\u00e9nyekre van sz\u00fcks\u00e9g ezekhez a technol\u00f3gi\u00e1khoz. De ne cs\u00fcggedj\u00fcnk, mert minden feladatra el\u0151bb-ut\u00f3bb megold\u00e1s tal\u00e1lhat\u00f3.<\/p>\n<p><img decoding=\"async\" alt=\"Nemcsak a m\u00e9ret sz\u00e1m\u00edt, vagy mit hozott nek\u00fcnk az \u00faj NVMe protokoll\" src=\"\/wp-content\/uploads\/2020\/07\/cc22d5148e637ae7d05a3b40da1ce0fd.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Az egyik ilyen megold\u00e1s az NVM-express protokoll lett, amely \u2013 ahogy a szak\u00e9rt\u0151k mondj\u00e1k \u2013 forradalmas\u00edtotta a szil\u00e1rdtest\u0171, energiaf\u00fcggetlen mem\u00f3ria haszn\u00e1lat\u00e1t. Mi is az NVMe, \u00e9s milyen el\u0151ny\u00f6ket hozott mag\u00e1val?<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>A sz\u00e1m\u00edt\u00f3g\u00e9p teljes\u00edtm\u00e9nye nagym\u00e9rt\u00e9kben f\u00fcgg az adatok leolvas\u00e1si sebess\u00e9g\u00e9t\u0151l \u00e9s a parancsok feldolgoz\u00e1si sebess\u00e9g\u00e9t\u0151l. Ak\u00e1rmilyen nagy teljes\u00edtm\u00e9ny\u0171 is legyen az oper\u00e1ci\u00f3s rendszer, mindent t\u00f6nkre tehet egy hagyom\u00e1nyos merevlemez, amely miatt a programok akadoznak megnyit\u00e1skor, vagy \u201egondolkodnak\u201d a nagyobb feladatok v\u00e9grehajt\u00e1sakor. Nem besz\u00e9lve arr\u00f3l, hogy a HDD gyakorlatilag kimer\u00edtette az adatok t\u00e1rol\u00e1s\u00e1nak kapacit\u00e1s\u00e1t, ez\u00e9rt kil\u00e1t\u00e1stalann\u00e1 v\u00e1lt. A mechanikus meghajt\u00f3 pedig egyenesen elavult, \u00e9s h\u00e1tr\u00e1ltatta a sz\u00e1m\u00edt\u00f3g\u00e9p-technol\u00f3gi\u00e1k fejl\u0151d\u00e9s\u00e9t.<\/p>\n<p>\u00cdgy a HDD helyett megjelentek az SSD-k \u2013 szil\u00e1rdtest-t\u00e1rol\u00f3k, energiaf\u00fcggetlen, nem mechanikus mem\u00f3riaeszk\u00f6z\u00f6k. Az els\u0151 SSD-meghajt\u00f3k a 2000-es \u00e9vek m\u00e1sodik fel\u00e9ben jelentek meg a piacon. Viszonylag gyorsan versenyezni kezdtek a merevlemezekkel a kapacit\u00e1s tekintet\u00e9ben. De a sebess\u00e9g \u00e9s a cell\u00e1k p\u00e1rhuzamos el\u00e9r\u00e9s\u00e9nek el\u0151nyeit sok\u00e1ig nem tudt\u00e1k teljes m\u00e9rt\u00e9kben kihaszn\u00e1lni, mert a megl\u00e9v\u0151 interf\u00e9szek \u00e9s protokollok r\u00e9gi szabv\u00e1nyokon alapultak, amelyek a HDD-k t\u00e1mogat\u00e1s\u00e1ra k\u00e9sz\u00fcltek a SATA interf\u00e9szek \u00e9s m\u00e9g r\u00e9gebbi SCSI (SAS) eszk\u00f6z\u00f6k\u00f6n kereszt\u00fcl.\u00a0<\/p>\n<p>A k\u00f6vetkez\u0151 l\u00e9p\u00e9s az energiaf\u00fcggetlen mem\u00f3ria potenci\u00e1lj\u00e1nak kiakn\u00e1z\u00e1s\u00e1ban a PCI-express buszokra val\u00f3 \u00e1tt\u00e9r\u00e9s volt. De akkor m\u00e9g nem alakultak ki az \u00faj ipari szabv\u00e1nyok. \u00cdgy 2012-ben megjelentek az els\u0151 sz\u00e1m\u00edt\u00f3g\u00e9pek, amelyekben megval\u00f3sult az NVM-express protokoll.<\/p>\n<blockquote><p>El\u0151sz\u00f6r is \u00e9rdemes hangs\u00falyozni, hogy az NVMe nem egy eszk\u00f6z, \u00e9s nem is az eszk\u00f6z csatlakoztat\u00e1s\u00e1nak interf\u00e9sze. Ez egy protokoll, pontosabban egy adatcsere protokoll specifik\u00e1ci\u00f3ja. <\/p><\/blockquote>\n<p>\nEz\u00e9rt a \u201eNVMe meghajt\u00f3\u201d kifejez\u00e9s nem teljesen helyes, \u00e9s az \u201eHDD \u2013 SSD \u2013 NVMe\u201d t\u00edpus\u00fa \u00f6sszehasonl\u00edt\u00e1s abszol\u00fat t\u00e9ves \u00e9s megt\u00e9veszti azokat a felhaszn\u00e1l\u00f3kat, akik most ismerkednek a t\u00e9m\u00e1val. Helyesebb az HDD-t \u00f6sszehasonl\u00edtani az SSD-vel egy oldalon, az SATA interf\u00e9szen kereszt\u00fcl csatlakoztatott SSD-t \u00e9s a PCI-express buszon NVM-express protokollt haszn\u00e1l\u00f3 SSD-t pedig egy m\u00e1sikon. Az HDD-SSD \u00f6sszehasonl\u00edt\u00e1s val\u00f3sz\u00edn\u0171leg m\u00e1r kev\u00e9s \u00e9rdekl\u0151d\u0151t vonz. Mindenki \u00e9rti a k\u00fcl\u00f6nbs\u00e9get, \u00e9s a legjobban ismert el\u0151ny\u00f6ket kedvelik. Tal\u00e1n \u00e9rdemes megeml\u00edteni n\u00e9h\u00e1ny (meglehet\u0151sen szembet\u0171n\u0151) el\u0151ny\u00fcket. A merevlemezekhez k\u00e9pest a szil\u00e1rdtest-meghajt\u00f3k kisebb m\u00e9ret\u0171ek \u00e9s k\u00f6nnyebbek, hangtalanok, \u00e9s a mechanikus meghajt\u00f3k teljes hi\u00e1nya sokkal nagyobb ellen\u00e1ll\u00f3 k\u00e9pess\u00e9ggel ruh\u00e1zza fel \u0151ket a s\u00e9r\u00fcl\u00e9sekkel szemben (p\u00e9ld\u00e1ul es\u00e9skor), valamint egyszer\u0171en megn\u00f6veli \u00e9lettartamukat.<\/p>\n<p>Az SSD-k r\u00e9gi buszon \u00e9s r\u00e9gi protokollal, valamint a PCIe buszon NVMe protokollal val\u00f3 \u00f6sszehasonl\u00edt\u00e1sa k\u00e9ts\u00e9gtelen\u00fcl sokkal nagyobb \u00e9rdekl\u0151d\u00e9st kelt, \u00e9s hasznos lesz mindenki sz\u00e1m\u00e1ra, aki szeret naprak\u00e9sz lenni az \u00fajdons\u00e1gokkal, azoknak, akik \u00faj sz\u00e1m\u00edt\u00f3g\u00e9pet szeretn\u00e9nek v\u00e1s\u00e1rolni, \u00e9s m\u00e9g azoknak is, akik p\u00e9ld\u00e1ul a legjobb t\u00e1rhelyet keresik.<\/p>\n<p>A SATA interface, as mentioned, was created for hard drives, where the head can physically access only one cell at a time. It's no surprise that SATA devices have only one channel. This is woefully inadequate for SSDs, as one of their advantages is support for parallel streams. The SSD controller also manages initial positioning, which is another significant advantage. The PCI-express bus allows for multi-channel operation, and the NVMe protocol implements this advantage. As a result, data stored on solid-state drives is transmitted through 65,536 parallel command queues, each capable of containing more than 65,536 commands simultaneously. In comparison, SATA and SCSI can only use one queue, supporting up to 32 and 254 commands, respectively.\u00a0<\/p>\n<p>Moreover, older interfaces require two memory accesses to execute each command, while NVMe manages to do it in one go.\u00a0<\/p>\n<p>The third significant advantage is the work with interruptions. The NVMe protocol was designed for modern platforms using multi-core processors. Therefore, it incorporates parallel processing of streams and an optimized mechanism for working with queues and handling interrupts, which allows for a higher level of performance. In other words, when a command with a higher priority appears, its execution begins more quickly.<\/p>\n<p>Numerous tests conducted by various organizations and experts prove that the speed of NVMe SSDs is, on average, five times higher than when connecting SSDs through older interfaces.<\/p>\n<p>Now, let's discuss whether SSDs using PCIe with the NVMe protocol are accessible to everyone. And it\u2019s not just about cost. Currently, such implementations are still noticeably more expensive, although, as we know, prices for computer components are typically high only at the very beginning of sales and tend to decrease rather quickly.\u00a0<\/p>\n<p>We are talking about structural solutions, what is commonly referred to in professional language as <b>the \"form factor\"<\/b>. In other words, in what form these components are produced by manufacturers. Currently, there are <b>three form factors on the market.<\/b>.<\/p>\n<p><img decoding=\"async\" alt=\"Nemcsak a m\u00e9ret sz\u00e1m\u00edt, vagy mit hozott nek\u00fcnk az \u00faj NVMe protokoll\" src=\"\/wp-content\/uploads\/2020\/07\/cdd90054f244c27a58d7b516c3b116a1.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><b>Az els\u0151<\/b> Ez az \u00fagynevezett \u201eNVMe SSD\u201d. Ez egy b\u0151v\u00edt\u0151k\u00e1rtya, amely ugyanazokba a slotokba csatlakozik, mint a videok\u00e1rtya. Laptophoz ez nem alkalmas. S\u0151t, sok asztali sz\u00e1m\u00edt\u00f3g\u00e9phez sem, mivel egyre ink\u00e1bb kompakt alaplapokra \u00e9p\u00edtik \u0151ket, ahol a PCIe slotok sz\u00e1ma gyakran csak kett\u0151 vagy ak\u00e1r egy (amelyet \u00e1ltal\u00e1ban a videok\u00e1rtya foglal el).<\/p>\n<p><img decoding=\"async\" alt=\"Nemcsak a m\u00e9ret sz\u00e1m\u00edt, vagy mit hozott nek\u00fcnk az \u00faj NVMe protokoll\" src=\"\/wp-content\/uploads\/2020\/07\/497bd667fe7ed9961d60ab844a0c75e2.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><b>A m\u00e1sodik form\u00e1tum<\/b> \u2014 U2. K\u00fcls\u0151leg hasonl\u00edt egy szokv\u00e1nyos merevlemezre, de sokkal kisebb m\u00e9ret\u0171. Az U2-t \u00e1ltal\u00e1ban szervereken haszn\u00e1lj\u00e1k, \u00edgy a norm\u00e1l felhaszn\u00e1l\u00f3knak val\u00f3sz\u00edn\u0171leg nem \u00e9rdemes megv\u00e1s\u00e1rolnia.<\/p>\n<p><img decoding=\"async\" alt=\"Nemcsak a m\u00e9ret sz\u00e1m\u00edt, vagy mit hozott nek\u00fcnk az \u00faj NVMe protokoll\" src=\"\/wp-content\/uploads\/2020\/07\/a39abf06888983c7463ec3d339fe2cd0.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><b>A harmadik \u2014 M2<\/b>. Ez a legink\u00e1bb fejl\u0151d\u0151 form\u00e1tum. Akt\u00edvan haszn\u00e1lj\u00e1k laptopokban, \u00e9s nemr\u00e9giben m\u00e1r n\u00e9h\u00e1ny asztali PC alaplapon is megval\u00f3s\u00edtott\u00e1k. Azonban, ha M2-t v\u00e1s\u00e1rol, nagyon figyelmesnek kell lennie, mivel ebben a form\u00e1tumban m\u00e9g mindig SATA SSD-ket is gy\u00e1rtanak.<\/p>\n<p>Vigy\u00e1zni kell a form\u00e1tumok megv\u00e1s\u00e1rl\u00e1s\u00e1nak \u00e9sszer\u0171s\u00e9g\u00e9nek \u00e9rt\u00e9kel\u00e9sekor is. El\u0151sz\u00f6r is meg kell n\u00e9znie, hogy van-e sz\u00fcks\u00e9ges slot a laptopj\u00e1ban vagy az alaplapj\u00e1n. \u00c9s m\u00e9g ha van is, el\u00e9g er\u0151s-e a sz\u00e1m\u00edt\u00f3g\u00e9p\u00e9nek a processzora, mert a gyenge processzor m\u00e9g mindig nem teszi lehet\u0151v\u00e9, hogy \u00e9lvezze az SSD el\u0151nyeit. Ha mindez adott, \u00e9s r\u00e1ad\u00e1sul gyakran dolgozik nagy adatmenyis\u00e9gekkel, akkor az NVMe SSD n\u00e9lk\u00fcl k\u00e9ts\u00e9gtelen\u00fcl az, amire sz\u00fcks\u00e9ge van.<\/p>\n<p><\/p>\n<h4>Hirdet\u00e9s<\/h4>\n<p>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/vdsina.ru\/cloud-servers?partner=habr37\">A VDS NVMe SSD-vel<\/a><\/noindex> \u2014 ez pontosan a mi v\u00e1llalatunk virtu\u00e1lis szervereire vonatkozik. <br \/>\nM\u00e1r r\u00e9gen kiz\u00e1r\u00f3lag \u00e9les Intel szerver t\u00e1rol\u00f3kat haszn\u00e1lunk, nem sp\u00f3rolunk a hardveren, csak pr\u00e9mium felszerel\u00e9st \u00e9s Oroszorsz\u00e1gban \u00e9s az EU-ban tal\u00e1lhat\u00f3 legjobb adatk\u00f6zpontokat. Siessen, hogy ellen\u0151rizze \ud83d\ude09<\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/vdsina.ru\/cloud-servers?partner=habr37\"><img decoding=\"async\" alt=\"Nemcsak a m\u00e9ret sz\u00e1m\u00edt, vagy mit hozott nek\u00fcnk az \u00faj NVMe protokoll\" src=\"\/wp-content\/uploads\/2020\/07\/a499a25c15644ed12f5c93a642d733f6.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><br \/>\n<br \/>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/vdsina\/blog\/511294\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0418\u0437\u0432\u0435\u0441\u0442\u043d\u0430\u044f \u0438\u0441\u0442\u043e\u0440\u0438\u044f. \u041a\u0430\u043a \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u043e\u044f\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u0431\u043e\u043b\u0435\u0435 \u043c\u043e\u0449\u043d\u044b\u0435 \u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440\u044b, \u043a\u0430\u043a \u0442\u043e\u043b\u044c\u043a\u043e \u0432\u043e\u0437\u0440\u0430\u0441\u0442\u0430\u0435\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 \u0438 \u0435\u043c\u043a\u043e\u0441\u0442\u044c \u043d\u043e\u0441\u0438\u0442\u0435\u043b\u0435\u0439 \u0434\u0430\u043d\u043d\u044b\u0445, \u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u0441 \u043e\u0431\u043b\u0435\u0433\u0447\u0435\u043d\u0438\u0435\u043c \u0432\u0437\u0434\u044b\u0445\u0430\u0435\u0442 \u2014 \u00ab\u0442\u0435\u043f\u0435\u0440\u044c \u043c\u043d\u0435 \u0432\u0441\u0435\u0433\u043e \u0438 \u043d\u0430 \u0432\u0441\u0451 \u0445\u0432\u0430\u0442\u0438\u0442, \u043d\u0435 \u043f\u0440\u0438\u0434\u0435\u0442\u0441\u044f \u0443\u0436\u0438\u043c\u0430\u0442\u044c\u0441\u044f \u0438 \u044d\u043a\u043e\u043d\u043e\u043c\u0438\u0442\u044c\u00bb, \u0442\u0430\u043a \u043f\u043e\u0447\u0442\u0438 \u0441\u0440\u0430\u0437\u0443 \u043f\u043e\u044f\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u043d\u043e\u0432\u044b\u0435 \u043f\u043e\u0442\u0440\u0435\u0431\u043d\u043e\u0441\u0442\u0438, \u043e\u0442\u0431\u0438\u0440\u0430\u044e\u0449\u0438\u0435 \u0432\u0441\u0451 \u0431\u043e\u043b\u044c\u0448\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432, \u043d\u043e\u0432\u043e\u0435 \u041f\u041e, \u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u0442\u043e\u0436\u0435 \u00ab\u043d\u0438 \u0432 \u0447\u0435\u043c \u0441\u0435\u0431\u0435 \u043d\u0435 \u043e\u0442\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u00bb. [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":89146,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-89145","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0418\u0437\u0432\u0435\u0441\u0442\u043d\u0430\u044f \u0438\u0441\u0442\u043e\u0440\u0438\u044f.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/ne-tolko-razmer-imeet-znachenie-ili-chto-nam-prines-novyj-protokol-nvme\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 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