{"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\/sk\/blog\/administrirovanie\/ne-tolko-razmer-imeet-znachenie-ili-chto-nam-prines-novyj-protokol-nvme","title":{"rendered":"Nie len ve\u013ekos\u0165 m\u00e1 v\u00fdznam, alebo \u010do n\u00e1m priniesol nov\u00fd protokol NVMe","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Zn\u00e1m\u00fd p\u0159\u00edb\u011bh. Jakmile se objevuj\u00ed mocn\u011bj\u0161\u00ed po\u010d\u00edta\u010de, jakmile se zvy\u0161uje v\u00fdkon procesor\u016f a kapacita pam\u011bt\u00ed, u\u017eivatel si s \u00falevou povzdechne \u2013 \u201ete\u010f u\u017e mi v\u0161echno sta\u010d\u00ed, nemus\u00edm se omezovat a \u0161et\u0159it\u201c, t\u00e9m\u011b\u0159 okam\u017eit\u011b se objev\u00ed nov\u00e9 pot\u0159eby, kter\u00e9 berou \u010d\u00edm d\u00e1l v\u00edce prost\u0159edk\u016f, nov\u00e9ho softwaru, kter\u00fd si tak\u00e9 \u201eneodkra\u010duje\u201c. V\u011b\u010dn\u00fd probl\u00e9m. Nekone\u010dn\u00fd cyklus. A nekone\u010dn\u00e9 hled\u00e1n\u00ed nov\u00fdch \u0159e\u0161en\u00ed. Cloudov\u00e1 \u00falo\u017ei\u0161t\u011b, neuronov\u00e9 s\u00edt\u011b, um\u011bl\u00e1 inteligence \u2013 je t\u011b\u017ek\u00e9 si p\u0159edstavit, jak obrovsk\u00fdch v\u00fdkon\u016f tyto technologie vy\u017eaduj\u00ed. Ale nel\u00e1mejme si hlavu, proto\u017ee pro ka\u017ed\u00fd \u00fakol se d\u0159\u00edve \u010di pozd\u011bji najde \u0159e\u0161en\u00ed.<\/p>\n<p><img decoding=\"async\" alt=\"Nie len ve\u013ekos\u0165 m\u00e1 v\u00fdznam, alebo \u010do n\u00e1m priniesol nov\u00fd protokol NVMe\" src=\"\/wp-content\/uploads\/2020\/07\/cc22d5148e637ae7d05a3b40da1ce0fd.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Jedn\u00edm z takov\u00fdch \u0159e\u0161en\u00ed se stal protokol NVM-express, kter\u00fd, jak \u0159\u00edkaj\u00ed odborn\u00edci, zp\u016fsobil revoluci ve vyu\u017e\u00edv\u00e1n\u00ed pevn\u00fdch pam\u011btov\u00fdch m\u00e9di\u00ed. Co je to NVMe a jak\u00e9 v\u00fdhody p\u0159inesl?<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>Rychlost pr\u00e1ce po\u010d\u00edta\u010de do zna\u010dn\u00e9 m\u00edry z\u00e1vis\u00ed na rychlosti \u010dten\u00ed dat z pam\u011b\u0165ov\u00fdch m\u00e9di\u00ed a na rychlosti zpracov\u00e1n\u00ed p\u0159\u00edkaz\u016f. A\u0165 u\u017e je opera\u010dn\u00ed syst\u00e9m jakkoli v\u00fdkonn\u00fd, v\u0161echno m\u016f\u017ee zhatit b\u011b\u017en\u00fd pevn\u00fd disk, kter\u00fd zp\u016fsobuje zpo\u017ed\u011bn\u00ed program\u016f p\u0159i otev\u00edr\u00e1n\u00ed nebo \u00abp\u0159em\u00fd\u0161len\u00ed\u00bb p\u0159i prov\u00e1d\u011bn\u00ed objemn\u00fdch \u00faloh. O tom, \u017ee HDD prakticky vy\u010derpal sv\u016fj potenci\u00e1l pro zvy\u0161ov\u00e1n\u00ed kapacity ukl\u00e1d\u00e1n\u00ed informac\u00ed, ani nemluv\u011b, stal se perspektivn\u011b bezv\u00fdznamn\u00fdm. A mechanick\u00fd disk u\u017e v\u016fbec zastaral a zpomalil rozvoj po\u010d\u00edta\u010dov\u00fdch technologi\u00ed.<\/p>\n<p>A tak na m\u00edsto HDD p\u0159ich\u00e1zej\u00ed SSD \u2013 pevn\u00e9 pam\u011bti, energii nez\u00e1visl\u00e9 nemekanick\u00e9 pam\u011b\u0165ov\u00e9 jednotky. Prvn\u00ed SSD disky se objevily na trhu ve druh\u00e9 polovin\u011b 2000. let. Pom\u011brn\u011b brzy za\u010daly soupe\u0159it s pevn\u00fdmi disky co do objemu. Ale pln\u011b odhalit sv\u016fj potenci\u00e1l a v\u00fdhody v rychlosti a paraleln\u00edm p\u0159\u00edstupu k bu\u0148k\u00e1m nemohly dlouho, proto\u017ee st\u00e1vaj\u00edc\u00ed rozhran\u00ed a protokoly byly postaveny na star\u00fdch standardech navr\u017een\u00fdch pro podporu HDD skrze rozhran\u00ed SATA a je\u0161t\u011b star\u0161\u00ed SCSI (SAS).\u00a0<\/p>\n<p>Nasleduj\u00facim krokom v odha\u013eovan\u00ed potenci\u00e1lu energonez\u00e1vislej pam\u00e4te bolo prechod na zbernice PCI-express. Ale pre ne v tom \u010dase e\u0161te neboli vyvinut\u00e9 nov\u00e9 priemyseln\u00e9 \u0161tandardy. A tak v roku 2012 prich\u00e1dzaj\u00fa na trh prv\u00e9 po\u010d\u00edta\u010de, v ktor\u00fdch je implementovan\u00fd protokol NVM-express.<\/p>\n<blockquote><p>Mali by sme si hne\u010f v\u0161imn\u00fa\u0165, \u017ee NVMe nie je zariadenie ani rozhranie jeho pripojenia. Je to protokol, presnej\u0161ie \u2013 \u0161pecifik\u00e1cia protokolu na prenos d\u00e1t. <\/p><\/blockquote>\n<p>\nPreto nie je \u00faplne spr\u00e1vne pou\u017e\u00edva\u0165 spojenie \u201ezariadenie NVMe\u201c, a porovnanie typu \u201eHDD \u2013 SSD \u2013 NVMe\u201c je absol\u00fatne chybn\u00e9 a zav\u00e1dza pou\u017e\u00edvate\u013ea, ktor\u00fd sa iba zoznamuje s touto t\u00e9mou. Spr\u00e1vne je porovn\u00e1va\u0165 HDD so SSD na jednej strane, SSD pripojen\u00e9 cez rozhranie SATA (pod\u013ea protokolu AHCI) a SSD pripojen\u00e9 cez zbernicu PCI-express s vyu\u017eit\u00edm protokolu NVM-express na druhej strane. Porovn\u00e1va\u0165 HDD so SSD u\u017e pravdepodobne niekoho ve\u013emi nezauj\u00edma. V\u0161etci ch\u00e1pu rozdiel a s\u00fa im dobre zn\u00e1me v\u00fdhody posledne menovan\u00e9ho. Sn\u00e1\u010f len poznamena\u0165 niektor\u00e9 (ve\u013emi v\u00fdrazn\u00e9) v\u00fdhody. V porovnan\u00ed s tvrd\u00fdmi diskami maj\u00fa SSD men\u0161iu ve\u013ekos\u0165 a hmotnos\u0165, s\u00fa tich\u00e9, a \u00fapln\u00e1 absencia mechanick\u00fdch s\u00fa\u010diastok ich rob\u00ed mnohon\u00e1sobne odolnej\u0161\u00edmi vo\u010di po\u0161kodeniam (napr\u00edklad pri p\u00e1de) a predl\u017euje ich \u017eivotnos\u0165.<\/p>\n<p>Porovnanie mo\u017enost\u00ed SSD so starou zbernicou a star\u00fdm protokolom a SSD na zbernici PCIe s protokolom NVMe, bez poch\u00fdb, predstavuje ove\u013ea v\u00e4\u010d\u0161\u00ed z\u00e1ujem a bude u\u017eito\u010dn\u00e9 pre v\u0161etk\u00fdch, ktor\u00ed sa radi informuj\u00fa o novink\u00e1ch, pre t\u00fdch, ktor\u00ed sa chystaj\u00fa k\u00fapi\u0165 nov\u00fd po\u010d\u00edta\u010d, a dokonca aj pre t\u00fdch, ktor\u00ed h\u013eadaj\u00fa najlep\u0161\u00ed hosting.<\/p>\n<p>Rozhranie SATA, ako u\u017e bolo spomenut\u00e9, bolo vytvoren\u00e9 pre pevn\u00e9 disky, ktor\u00fdch hlava m\u00f4\u017ee fyzicky pristupova\u0165 len k jednej bunke naraz. Niet divu, \u017ee v zariadeniach SATA je len jeden kan\u00e1l. Pre SSD je to \u017ealostne m\u00e1lo, preto\u017ee jednou z ich v\u00fdhod je podpora paraleln\u00fdch tokov. Ovl\u00e1da\u010d SSD tie\u017e riadi po\u010diato\u010dn\u00e9 polohovanie, \u010do je \u010fal\u0161ia z\u00e1sadn\u00e1 v\u00fdhoda. Zbernica PCI-express umo\u017e\u0148uje viac kan\u00e1lov a protokol NVMe tohto benefit vyu\u017e\u00edva. V d\u00f4sledku toho s\u00fa \u00fadaje ulo\u017een\u00e9 na pevn\u00fdch stavov\u00fdch diskov pren\u00e1\u0161an\u00e9 cez 65 536 paraleln\u00fdch \u010dakac\u00edch radov, pri\u010dom ka\u017ed\u00fd z nich m\u00f4\u017ee obsahova\u0165 viac ako 65 536 pr\u00edkazov. Porovnajte: SATA a SCSI m\u00f4\u017eu pou\u017e\u00edva\u0165 iba jednu radu, ktor\u00e1 podporuje a\u017e 32 a 254 pr\u00edkazov, resp.\u00a0<\/p>\n<p>Navy\u0161e star\u0161ie rozhrania na vykonanie ka\u017ed\u00e9ho pr\u00edkazu vy\u017eaduj\u00fa dva pr\u00edstupy k opera\u010dnej pam\u00e4ti, zatia\u013e \u010do NVMe to dok\u00e1\u017ee za jeden pr\u00edstup.\u00a0<\/p>\n<p>Tretia z\u00e1sadn\u00e1 v\u00fdhoda spo\u010d\u00edva v pr\u00e1ci s preru\u0161en\u00edm. Protokol NVMe bol vyvinut\u00fd pre modern\u00e9 platformy pou\u017e\u00edvaj\u00face viacjadrov\u00e9 procesory. Preto obsahuje paralelnos\u0165 spracovania tokov a optimalizovan\u00fd mechanizmus spr\u00e1vy \u010dak\u00e1cich radov a spracovania preru\u0161enia, \u010do zabezpe\u010duje vy\u0161\u0161iu \u00farove\u0148 v\u00fdkonu. In\u00fdmi slovami, ak sa objav\u00ed pr\u00edkaz s vy\u0161\u0161ou prioritou, jeho vykonanie za\u010dne r\u00fdchlej\u0161ie.<\/p>\n<p>R\u00f4zne testy, ktor\u00e9 uskuto\u010dnili r\u00f4zne organiz\u00e1cie a odborn\u00edci, dokazuj\u00fa, \u017ee r\u00fdchlos\u0165 pr\u00e1ce SSD NVMe je v priemere 5-kr\u00e1t vy\u0161\u0161ia ako pri pripojen\u00ed SSD cez star\u00e9 rozhrania.<\/p>\n<p>Teraz o tom, \u010di s\u00fa SSD implementovan\u00e9 na PCIe s protokolom NVMe dostupn\u00e9 pre v\u0161etk\u00fdch. A nejde len o cenu. Cena tak\u00fdchto implement\u00e1ci\u00ed je zatia\u013e v\u00fdrazne vy\u0161\u0161ia, hoci ceny po\u010d\u00edta\u010dov\u00fdch komponentov s\u00fa na za\u010diatku predaja spravidla vysok\u00e9 a maj\u00fa tendenciu k pomerne r\u00fdchlemu zni\u017eovaniu.\u00a0<\/p>\n<p>Ide o kon\u0161truk\u010dn\u00e9 rie\u0161enia, to, \u010domu sa v profesion\u00e1lnej terminol\u00f3gii hovor\u00ed <b>\u201eform\u00e1t\u201c<\/b>. In\u00fdmi slovami, v akej forme s\u00fa tieto komponenty vyr\u00e1ban\u00e9 v\u00fdrobcami. V s\u00fa\u010dasnosti na trhu existuj\u00fa <b>tri form\u00e1ty<\/b>.<\/p>\n<p><img decoding=\"async\" alt=\"Nie len ve\u013ekos\u0165 m\u00e1 v\u00fdznam, alebo \u010do n\u00e1m priniesol nov\u00fd protokol NVMe\" src=\"\/wp-content\/uploads\/2020\/07\/cdd90054f244c27a58d7b516c3b116a1.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><b>Prv\u00fd<\/b> Tento typ sa naz\u00fdva \"NVMe SSD\". Predstavuje si roz\u0161\u00edren\u00fa kartu a pripojuje sa do t\u00fdch ist\u00fdch slotov ako grafick\u00e1 karta. Pre notebooky nie je vhodn\u00fd. Rovnako ako pre mnoh\u00e9 stoln\u00e9 po\u010d\u00edta\u010de, preto\u017ee \u010doraz viac z nich je zostaven\u00fdch na kompaktn\u00fdch z\u00e1kladn\u00fdch dosk\u00e1ch, kde s\u00fa sloty PCIe zvy\u010dajne len dva alebo jeden (ktor\u00fd je zvy\u010dajne obsaden\u00fd grafickou kartou).<\/p>\n<p><img decoding=\"async\" alt=\"Nie len ve\u013ekos\u0165 m\u00e1 v\u00fdznam, alebo \u010do n\u00e1m priniesol nov\u00fd protokol NVMe\" src=\"\/wp-content\/uploads\/2020\/07\/497bd667fe7ed9961d60ab844a0c75e2.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><b>Druh\u00fd form\u00e1t<\/b> \u2014 U2. Na poh\u013ead pripom\u00edna be\u017en\u00fd pevn\u00fd disk, ale je ove\u013ea men\u0161\u00ed. U2 sa zvy\u010dajne pou\u017e\u00edvaj\u00fa na serveroch, preto by si ho be\u017en\u00fd pou\u017e\u00edvate\u013e pravdepodobne nemal kupova\u0165.<\/p>\n<p><img decoding=\"async\" alt=\"Nie len ve\u013ekos\u0165 m\u00e1 v\u00fdznam, alebo \u010do n\u00e1m priniesol nov\u00fd protokol NVMe\" src=\"\/wp-content\/uploads\/2020\/07\/a39abf06888983c7463ec3d339fe2cd0.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><b>Tret\u00ed \u2014 M2<\/b>. Tento form\u00e1t sa najviac rozv\u00edja. Akt\u00edvne ho pou\u017e\u00edvaj\u00fa v notebookoch a ned\u00e1vno bol u\u017e implementovan\u00fd aj na niektor\u00fdch z\u00e1kladn\u00fdch dosk\u00e1ch pre stoln\u00e9 po\u010d\u00edta\u010de. Av\u0161ak pri k\u00fape M2 je potrebn\u00e9 by\u0165 ve\u013emi opatrn\u00fd, preto\u017ee v tomto form\u00e1te sa e\u0161te st\u00e1le vyr\u00e1baj\u00fa aj SATA SSD.<\/p>\n<p>Av\u0161ak pozornos\u0165 je nutn\u00e1 aj pri posudzovan\u00ed potrebnosti zak\u00fapenia niektor\u00e9ho z uveden\u00fdch form\u00e1tov. Na za\u010diatok by ste mali zhodnoti\u0165, \u010di v\u00e1\u0161 notebook alebo z\u00e1kladn\u00e1 doska PC obsahuj\u00fa potrebn\u00e9 sloty. A aj ke\u010f ich m\u00e1te, je dostato\u010dne v\u00fdkonn\u00fd procesor vo va\u0161om po\u010d\u00edta\u010di, preto\u017ee slab\u00fd procesor v\u00e1m aj tak nedovol\u00ed poc\u00edti\u0165 v\u00fdhody SSD. Ak toto v\u0161etko m\u00e1te a navy\u0161e \u010dasto pracujete s ve\u013ek\u00fdmi objemami d\u00e1t, ur\u010dite, NVMe SSD \u2014 to je to, \u010do potrebujete.<\/p>\n<p><\/p>\n<h4>Na z\u00e1klade reklamy<\/h4>\n<p>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/vdsina.ru\/cloud-servers?partner=habr37\">VDS s NVMe SSD<\/a><\/noindex> \u2014 je presne o virtu\u00e1lnych serveroch od na\u0161ej spolo\u010dnosti. <br \/>\nU\u017e d\u00e1vno pou\u017e\u00edvame v\u00fdlu\u010dne r\u00fdchle serverov\u00e9 \u00falo\u017eisk\u00e1 od Intelu, ne\u0161etr\u00edme na hardv\u00e9ri, len zna\u010dkov\u00e9 vybavenie a jedno z najlep\u0161\u00edch d\u00e1tov\u00fdch centier v Rusku a E\u00da. Nezabudnite skontrolova\u0165 \ud83d\ude09<\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/vdsina.ru\/cloud-servers?partner=habr37\"><img decoding=\"async\" alt=\"Nie len ve\u013ekos\u0165 m\u00e1 v\u00fdznam, alebo \u010do n\u00e1m priniesol nov\u00fd protokol NVMe\" src=\"\/wp-content\/uploads\/2020\/07\/a499a25c15644ed12f5c93a642d733f6.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><br \/>\n<br \/>Zdroj: <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 5.0.4 - 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\/sk\/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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