{"id":31720,"date":"2019-10-31T21:42:42","date_gmt":"2019-10-31T18:42:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/modulnoe-hranenie-i-stepeni-svobody-jbod\/"},"modified":"2019-10-31T21:42:42","modified_gmt":"2019-10-31T18:42:42","slug":"modulnoe-hranenie-i-stepeni-svobody-jbod","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/modulnoe-hranenie-i-stepeni-svobody-jbod","title":{"rendered":"Moodulaarne salvestamine ja vabadusastmed JBOD","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Kui ettev\u00f5te tegeleb suurte andmemahtudega, ei ole andmete salvestamise \u00fcksus \u00fcksik ketas, vaid ketaste kogum, vajalikku mahtu tagav agregaat. Ja seda tuleb hallata kui tervikut. Suurte agregaatide salvestuse skaleerimise loogikat kirjeldatakse h\u00e4sti JBOD n\u00e4ite kaudu \u2013 kui ketaste \u00fchendamise formaati ja f\u00fc\u00fcsiliste seadmete t\u00fc\u00fcpi.<\/p>\n

Kettainfrastruktuuri saab skaleerida mitte ainult \u201e\u00fcles\u201d, kaskaadides JBOD, vaid ka \u201esisemiselt\u201d, kasutades erinevaid t\u00e4itmisstsenaariume. Kuidas see t\u00f6\u00f6tab, uurime West Digital Ultastar Data60 n\u00e4itel.<\/a><\/noindex><\/p>\n

T\u00e4iendamine<\/h2>\n

\nJBOD on eraldi klass serveriseadmest, mis on m\u00f5eldud ketaste tihedaks paigutamiseks, pakkudes palju kanalit juhtivatele hostidele l\u00e4bi SAS. JBOD tootjad m\u00fc\u00fcvad neid t\u00fchjana, osaliselt v\u00f5i t\u00e4ielikult ketastega \u2013 nagu kellelgi meeldib. Salvestuste j\u00e4rk-j\u00e4rguline t\u00e4itmine ketastega \u2013 vajaduste kasvades \u2013 v\u00f5imaldab kapitalikulusid ajaliselt hajutada. Western Digitali puhul on kasulik osta JBOD koos k\u00f5ikide 60 ketasega \u2013 see on tunduvalt odavam. Kuid saab osta ka osaliselt t\u00e4idetud: minimaalne varustus Ultastar Data60 koosneb 24 m\u00e4luseadmest.<\/p>\n

Miks 24? Lihtne vastus: aerod\u00fcnaamika. \u201eKuldne standard\u201c JBOD 4U \/ 60 x 3.5\u201d on t\u00f6\u00f6stuses levinud praktilistel p\u00f5hjustel \u2014 seadme m\u00f5istlikud m\u00f5\u00f5dud, juurdep\u00e4\u00e4su korraldus, hea jahutus. 60 ketast koosneb 5 reast, igas 12 HDD-d. Osaliselt t\u00e4idetud read v\u00f5i kettade puuduj\u00e4\u00e4k JBOD-s (n\u00e4iteks ainult \u00fcks rida) toovad kaasa halvenenud soojuse \u00e4rajuhtimise v\u00f5i isegi \u00f5huvoolu tagasivoolu keskmises kanalites \u2014 Ultastar Data60 konstruktsiooniline omadus ja selle erip\u00e4ra.<\/p>\n

Oma JBOD-des kasutab WD ArcticFlow ketaste jahutus tehnoloogiat, mis on hoolikalt modelleeritud ja v\u00e4lja t\u00f6\u00f6tatud. K\u00f5ik HDD jaoks \u2014 nende j\u00f5udluse, vastupidavuse ja andmete s\u00e4ilitamise nimel.<\/p>\n

ArcticFlow olemus seisneb kahe s\u00f5ltumatu \u00f5huvoo loomises ventilaatorite abil: esipaneel jahutab esimesed rida andmekandjatest, samas kui \u00f5hk, mis siseneb korpuse sisemisse \u00f5huvahe, kasutatakse JBOD tagumiste ketaste jahutamiseks.<\/p>\n

On selge, miks ArcticFlow'i t\u00f5husaks t\u00f6\u00f6ks on oluline j\u00e4lgida vabade sektsioonide t\u00e4itmist. Minimalkonfiguratsioonis, kus on 24 ketast, peaks Ultastar Data60 paigutus algama tagumisest alast.<\/p>\n

\"Moodulaarne<\/p>\n

\n12 kogujaga konfiguratsioonis, ilma kahe rea paigutuse poolt esitatava takistuseta, j\u00f5uab \u00f5hkuvool JBOD-ist v\u00e4lja tagasi esialgse alaga jahutuss\u00fcsteemi.
\n\"Moodulaarne
\nOn olemas v\u00f5imalus olukorda parandada, millest r\u00e4\u00e4gime hiljem.<\/p>\n

H\u00fcbriidsusest<\/h2>\n

\nOn oluline kohe aktsepteerida t\u00f5siasja, et JBOD-i eesm\u00e4rk on skaleeritud andmete salvestamine. Seega j\u00e4reldame: kasutame seda homogeensete seadmete populatsiooniks, eesm\u00e4rgiga ajaga j\u00f5uda kavandatud salvestusmahuni ja t\u00e4ita k\u00f5ik sektsioonid.<\/p>\n

Aga kuidas on SSD-dega? Parim (ja \u00f5ige) lahendus on luua eraldi t\u00f5hus salvestuslahendus JBOF-is. SSD-diskide jaoks on seal mugavam. Samuti v\u00f5imaldab Ultastar Data60 m\u00e4luseadmete installimist. Enne kui asuda JBOD-i h\u00fcbriidimisele, tasub hoolikalt kaaluda plusse ja miinuseid \u2014 valida SSD-d \u00fchilduvate seadmete loendist (erinevalt HDD-st, ei ole SSD toetuse osas nii selgeid juhiseid). Tuleb ka investeerida 2,5-tolliste ketaste kinnitamisse 3,5-tollistes kohtades. <\/p>\n

\u00dcksikud SSD-seadmed tuleb paigutada JBOD-i tagapoolse zone ning sulgeda kasutamata kohad spetsiaalsete plaadiga \u2014 Drive Blanks. See takistab vabalt liikuvat jahutus\u00f5hku, et v\u00e4ltida selle ringlusest r\u00e4\u00e4kimist.
\n\"Moodulaarne
\nKokku on lubatud paigaldada mitte rohkem kui 24 tahkete m\u00e4luseadet Ultastar Data60 \u0161assiisse. Igatahes peavad need olema viimastes ridades tagapoolsetes piirkondades.
\n\"Moodulaarne
\nMiks 24? Tahkete ketaste soojusv\u00f5imekus on k\u00f5rgem kui HDD-de sarnastel omadustel, mist\u00f5ttu ei suuda erinevate andmekandjate multiseriaalne paigutus efektiivselt ArcticFlow't jahutada. Soojuse eemaldamine muutub JBOD-i t\u00f6\u00f6kindluse riskifaktoriks.<\/p>\n

Siinkohal on kohane m\u00e4rkida, et Drive Blanks'i abil saab v\u00e4hendada sooja \u00f5hu taask\u00e4itlemise m\u00f5ju. 12 HDD-ga JBOD paigutus jahutatakse paremini, kui t\u00fchjad kohad sulgeda kate. Tootja ei maininud seda nippi, kuid katsetamise \u00f5igus j\u00e4\u00e4b alati meie kanda. Muide, WD ei keela 12-ketaste t\u00e4itmist, kuigi ei soovita seda.<\/p>\n

Praktilised j\u00e4reldused<\/h2>\n

\nIsegi pinnapealne tutvumine JBOD-i aerod\u00fcnaamikaga annab arusaama, et ladustamise usaldusv\u00e4\u00e4rsuse tagamiseks on parim toetuda arendaja kogemusele ja soovitustele. Diskikorvi sees toimuvad protsessid n\u00f5uavad p\u00f5hjalikke uuringuid. Saadud teadmiste eiramine v\u00f5ib p\u00f5hjustada probleeme, mis on sadade terabaitide salvestusmahud tundlikud igas m\u00f5ttes.<\/p>\n

On teada, kuidas kirjutatakse s\u00f5jav\u00e4e k\u00e4ske. Midagi sarnast toimub ka JBOD arhitektuuris. Kui varasemate aegade lahendused olid tihti disainitud nii, et liides asus \"v\u00e4ljalaske\" piirkonnas, kuhu puhus sooja \u00f5hku, siis t\u00e4na on Ultastar Data60 sellest puudusest vabastatud. K\u00f5ik muud insenertehnilised leiutised on lihtsalt tehnoloogilised imed. Niimoodi tulekski sellele l\u00e4heneda.
\n
Allikas: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u0433\u0434\u0430 \u0431\u0438\u0437\u043d\u0435\u0441 \u043e\u043f\u0435\u0440\u0438\u0440\u0443\u0435\u0442 \u043e\u0431\u044a\u0435\u043c\u043d\u044b\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u043c\u0438, \u0435\u0434\u0438\u043d\u0438\u0446\u0435\u0439 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u0441\u044f \u043d\u0435 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0439 \u0434\u0438\u0441\u043a, \u0430 \u043d\u0430\u0431\u043e\u0440 \u0434\u0438\u0441\u043a\u043e\u0432, \u0438\u0445 \u0441\u043e\u0432\u043e\u043a\u0443\u043f\u043d\u043e\u0441\u0442\u044c, \u0430\u0433\u0440\u0435\u0433\u0430\u0442 \u043d\u0443\u0436\u043d\u043e\u0433\u043e \u043e\u0431\u044a\u0435\u043c\u0430. \u0418 \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u0442\u044c \u0438\u043c \u043d\u0430\u0434\u043e \u043a\u0430\u043a \u0446\u0435\u043b\u044c\u043d\u043e\u0439 \u0441\u0443\u0449\u043d\u043e\u0441\u0442\u044c\u044e. \u041b\u043e\u0433\u0438\u043a\u0430 \u043c\u0430\u0441\u0448\u0442\u0430\u0431\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u043a\u0440\u0443\u043f\u043d\u043e\u0431\u043b\u043e\u0447\u043d\u044b\u043c\u0438 \u0430\u0433\u0440\u0435\u0433\u0430\u0442\u0430\u043c\u0438 \u0445\u043e\u0440\u043e\u0448\u043e \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u043d\u0430 \u043f\u0440\u0438\u043c\u0435\u0440\u0435 JBOD \u2014 \u043a\u0430\u043a \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043e\u0431\u044a\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f \u0434\u0438\u0441\u043a\u043e\u0432 \u0438 \u043a\u0430\u043a \u0444\u0438\u0437\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430. \u041c\u0430\u0441\u0448\u0442\u0430\u0431\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0434\u0438\u0441\u043a\u043e\u0432\u0443\u044e \u0438\u043d\u0444\u0440\u0430\u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443 \u043c\u043e\u0436\u043d\u043e \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u00ab\u0432\u0432\u0435\u0440\u0445\u00bb, \u043a\u0430\u0441\u043a\u0430\u0434\u0438\u0440\u0443\u044f JBOD, \u043d\u043e […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":23621,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-31720","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Modulaarne salvestamine ja JBOD vabadus | ProHoster","description":"Kui \u00e4ri opereerib suurte andmete kogustega, siis on salvestus\u00fcksuseks mitte \u00fcksik ketas, vaid ketaste kogum, nende summa, vajalikku mahtu esindav aggregaat. Ja selle juhtimine peab toimuma kui \u00fchtse tervikuna.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/modulnoe-hranenie-i-stepeni-svobody-jbod","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041c\u043e\u0434\u0443\u043b\u044c\u043d\u043e\u0435 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u0435 \u0438 \u0441\u0442\u0435\u043f\u0435\u043d\u0438 \u0441\u0432\u043e\u0431\u043e\u0434\u044b JBOD | ProHoster","og:description":"\u041a\u043e\u0433\u0434\u0430 \u0431\u0438\u0437\u043d\u0435\u0441 \u043e\u043f\u0435\u0440\u0438\u0440\u0443\u0435\u0442 \u043e\u0431\u044a\u0435\u043c\u043d\u044b\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u043c\u0438, \u0435\u0434\u0438\u043d\u0438\u0446\u0435\u0439 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u0441\u044f \u043d\u0435 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0439 \u0434\u0438\u0441\u043a, \u0430 \u043d\u0430\u0431\u043e\u0440 \u0434\u0438\u0441\u043a\u043e\u0432, \u0438\u0445 \u0441\u043e\u0432\u043e\u043a\u0443\u043f\u043d\u043e\u0441\u0442\u044c, \u0430\u0433\u0440\u0435\u0433\u0430\u0442 \u043d\u0443\u0436\u043d\u043e\u0433\u043e \u043e\u0431\u044a\u0435\u043c\u0430. \u0418 \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u0442\u044c \u0438\u043c \u043d\u0430\u0434\u043e \u043a\u0430\u043a \u0446\u0435\u043b\u044c\u043d\u043e\u0439 \u0441\u0443\u0449\u043d\u043e\u0441\u0442\u044c\u044e.","og:url":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/modulnoe-hranenie-i-stepeni-svobody-jbod","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2019-10-31T18:42:42+00:00","article:modified_time":"2019-10-31T18:42:42+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"31720","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-21 07:30:20","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-03-01 03:12:32","updated":"2026-01-21 07:30:20","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/31720","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/comments?post=31720"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/31720\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media\/23621"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media?parent=31720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/categories?post=31720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/tags?post=31720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}