{"id":41682,"date":"2020-02-14T08:42:37","date_gmt":"2020-02-14T05:42:37","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/backblaze-statistika-zhestkih-diskov-za-2019"},"modified":"2020-02-14T08:42:37","modified_gmt":"2020-02-14T05:42:37","slug":"backblaze-statistika-zhestkih-diskov-za-2019","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/backblaze-statistika-zhestkih-diskov-za-2019","title":{"rendered":"Backblaze \u2014 statistika pevn\u00fdch disk\u016f za rok 2019.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Backblaze \u2014 statistika pevn\u00fdch disk\u016f za rok 2019.\" src=\"\/wp-content\/uploads\/2020\/02\/45e329c5bd79d3ac657e5bb62bac1c1f.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>K 31. prosinci 2019 jsme m\u011bli 124 956 funk\u010dn\u00edch pevn\u00fdch disk\u016f. Z toho 2 229 bootovac\u00edch a 122 658 s daty. V t\u00e9to zpr\u00e1v\u011b se pod\u00edv\u00e1me na statistiku selh\u00e1n\u00ed pevn\u00fdch disk\u016f s daty. Tak\u00e9 se budeme zab\u00fdvat verzemi disk\u016f 12 a 14 TB a nov\u00fdmi 16 TB, kter\u00e9 aktivn\u011b pou\u017e\u00edv\u00e1me od za\u010d\u00e1tku \u010dtvrt\u00e9ho \u010dtvrtlet\u00ed 2019. <\/p>\n<p><\/p>\n<h3 id=\"statistika-za-2019-god\">Statistika za rok 2019<\/h3>\n<p><\/p>\n<p>Na konci roku 2019 jsme monitorovali 122 658 pevn\u00fdch disk\u016f, kter\u00e9 se pou\u017e\u00edvaly pro ukl\u00e1d\u00e1n\u00ed dat. Ze v\u00fdpo\u010dtu jsme odstranili disky, kter\u00e9 byly pou\u017e\u00edv\u00e1ny pro testov\u00e1n\u00ed, a disky, kter\u00e9 nem\u011bly nahran\u00e9 p\u0159ibli\u017en\u011b 5 000 diskodn\u016f (na model) b\u011bhem \u010dtvrt\u00e9ho \u010dtvrtlet\u00ed. T\u00edmto jsme shrom\u00e1\u017edili data na z\u00e1klad\u011b 122 507 pevn\u00fdch disk\u016f. Tabulka n\u00ed\u017ee zobrazuje na\u0161i statistiku:<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p><img decoding=\"async\" alt=\"Backblaze \u2014 statistika pevn\u00fdch disk\u016f za rok 2019.\" src=\"\/wp-content\/uploads\/2020\/02\/4dce1a6c36a7e6e445695c312a615142.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<h3 id=\"zametki-i-nablyudeniya\">Pozn\u00e1mky a pozorov\u00e1n\u00ed<\/h3>\n<p><\/p>\n<p>151 pevn\u00fdch disk\u016f (122 658 minus 122 507) nebylo zahrnuto do statistik. Tyto disky byly pou\u017e\u00edv\u00e1ny pro testov\u00e1n\u00ed nebo neodhromadily celkem 5 000 diskodn\u016f b\u011bhem \u010dtvrt\u00e9ho \u010dtvrtlet\u00ed 2019. Tak\u017ee z na\u0161ich statistik odstran\u00edme disky, kter\u00e9 podle na\u0161eho n\u00e1zoru nepracovaly dostate\u010dn\u011b dlouho na to, aby bylo mo\u017en\u00e9 u\u010dinit jak\u00e9koli z\u00e1v\u011bry.<\/p>\n<p><\/p>\n<p>Jedin\u00fd bezporuchov\u00fd disk za rok 2019 \u2014 4 TB Toshiba, model: MD04ABA400V. To je vynikaj\u00edc\u00ed v\u00fdsledek, ale proto\u017ee jsme m\u011bli relativn\u011b m\u00e1lo takov\u00fdch disk\u016f, p\u0159i selh\u00e1n\u00ed pouze jednoho disku bychom m\u011bli m\u00edru okolo 0,92 %. St\u00e1le dob\u0159e, ale u\u017e ne 0 %.<\/p>\n<p><\/p>\n<p>Toshiba 14 TB model MG07ACA14TA vykazuje velmi dobr\u00e9 v\u00fdsledky s ukazatelem 0,65 % AFR a nach\u00e1z\u00ed se vedle disk\u016f od HGST. Seagate 6 TB a 10 TB se stabiln\u011b dr\u017e\u00ed na \u00farovni 0,96 % a 1,00 % respektive.<\/p>\n<p><\/p>\n<p>Ukazatel AFR za rok 2019 pro v\u0161echny disky je 1,89 %, co\u017e je v\u00fdrazn\u011b v\u00edce ne\u017e v roce 2018. To si podrobn\u011bji probereme pozd\u011bji.<\/p>\n<p><\/p>\n<h3 id=\"za-predelami-statistiki---skrytye-modeli-diskov\">Mimo statistiku \u2014 \"skryt\u00e9\" modely disk\u016f<\/h3>\n<p><\/p>\n<p>Mnoho model\u016f se nedostalo do na\u0161\u00ed statistiky za rok 2019, proto\u017ee pracovaly p\u0159\u00edli\u0161 kr\u00e1tkou dobu. Chceme se zm\u00ednit o t\u011bchto modelech a o tom, jak je pou\u017e\u00edv\u00e1me.<\/p>\n<p><\/p>\n<h3 id=\"seagate-16-tb\">Seagate 16 TB<\/h3>\n<p><\/p>\n<p>Ve \u010dtvrt\u00e9m \u010dtvrtlet\u00ed 2019 jsme za\u010dali kvalifikaci disk\u016f Seagate o kapacit\u011b 16 TB, model: ST16000NM001G. Na konci \u010dtvrt\u00e9ho \u010dtvrtlet\u00ed jsme m\u011bli 40 disk\u016f, co\u017e celkov\u011b p\u0159edstavovalo 1 440 diskodn\u00ed, co\u017e je v\u00fdrazn\u011b pod prahovou hodnotou 5 000 dn\u016f pro na\u0161i statistiku za rok 2019. Ve \u010dtvrt\u00e9m \u010dtvrtlet\u00ed mezi t\u011bmito disky nedo\u0161lo k \u017e\u00e1dn\u00fdm selh\u00e1n\u00edm. V p\u0159\u00edpad\u011b \u00fasp\u011b\u0161n\u00e9ho absolvov\u00e1n\u00ed na\u0161\u00ed kvalifikace budou pou\u017eity pro n\u00e1\u0161 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.backblaze.com\/blog\/drive-stats-update\">migrace projektu<\/a><\/noindex> v tomto roce.<\/p>\n<p><\/p>\n<h3 id=\"toshiba-8-tb\">Toshiba 8 TB<\/h3>\n<p><\/p>\n<p>V 4. \u010dtvrtlet\u00ed 2019 bylo 20 disk\u016f Toshiba 8 TB, model: HDWF180. Tyto disky pracovaly po dobu dvou let. Ve \u010dtvrt\u00e9m \u010dtvrtlet\u00ed m\u011bly pouze 1 840 pracovn\u00edch dn\u016f, co\u017e je pod prahovou hodnotou pro statistiku, ale jejich \u017eivotnost \u010din\u00ed 13 994 dn\u016f s pouze jedn\u00edm selh\u00e1n\u00edm, co\u017e n\u00e1m d\u00e1v\u00e1 AFR 2,6 %. Tyto disky m\u00e1me r\u00e1di, ale kdy\u017e jsme je mohli nakupovat v pot\u0159ebn\u00e9m mno\u017estv\u00ed, staly se cenov\u011b srovnateln\u00fdmi s 12 TB. V\u011bt\u0161\u00ed kapacita, stejn\u00e1 cena. Vzhledem k tomu, \u017ee p\u0159ech\u00e1z\u00edme na disky o kapacit\u011b 16 TB a vy\u0161\u0161\u00ed, pravd\u011bpodobn\u011b je v budoucnu kupovat nebudeme.<\/p>\n<p><\/p>\n<h3 id=\"hgst-10-tb\">HGST 10 TB<\/h3>\n<p><\/p>\n<p>V provozu je 20 disk\u016f HGST 10 TB, model: HUH721010ALE600. Tyto disky byly v provozu n\u011bco m\u00e1lo p\u0159es rok. Nach\u00e1zej\u00ed se ve stejn\u00e9m \u00falo\u017ei\u0161ti Backblaze jako disky Seagate 10 TB. Za 4 \u010dtvrtlet\u00ed pracovaly disky HGST celkem 1 840 dn\u016f, a od instalace \u2014 8 042. Nebylo zaznamen\u00e1no \u017e\u00e1dn\u00e9 (nula) selh\u00e1n\u00ed. Stejn\u011b jako v p\u0159\u00edpad\u011b Toshiba 8 TB je pravd\u011bpodobnost n\u00e1kupu v\u011bt\u0161\u00edho mno\u017estv\u00ed verze 10 TB mal\u00e1.<\/p>\n<p><\/p>\n<h3 id=\"toshiba-16-tb\">Toshiba 16 TB<\/h3>\n<p><\/p>\n<p>Nenajdete je ve statistik\u00e1ch za \u010dtvrt\u00e9 \u010dtvrtlet\u00ed, ale v prvn\u00edm \u010dtvrtlet\u00ed 2020 jsme p\u0159idali 20 disk\u016f Toshiba o kapacit\u011b 16 TB, model: MG08ACA16TA. Tyto disky pracovaly celkem 100 dn\u00ed, tak\u017ee je p\u0159\u00edli\u0161 brzy hovo\u0159it o n\u011b\u010dem jin\u00e9m ne\u017e o statistik\u00e1ch za prvn\u00ed \u010dtvrtlet\u00ed 2020.<\/p>\n<p><\/p>\n<h3 id=\"sravnenie-statistiki-zhestkih-diskov-za-2017-2018-i-2019-gg\">Srovn\u00e1n\u00ed statistik pevn\u00fdch disk\u016f za roky 2017, 2018 a 2019.<\/h3>\n<p><\/p>\n<p>V n\u00e1sleduj\u00edc\u00ed tabulce jsou porovn\u00e1ny ro\u010dn\u00ed m\u00edry selh\u00e1n\u00ed (AFR) za ka\u017ed\u00fd z posledn\u00edch t\u0159\u00ed let:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Backblaze \u2014 statistika pevn\u00fdch disk\u016f za rok 2019.\" src=\"\/wp-content\/uploads\/2020\/02\/bd528ebe7b586d6845744be3ae9464b0.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<h3 id=\"rost-afr-v-2019-godu\">R\u016fst AFR v roce 2019<\/h3>\n<p><\/p>\n<p>Celkov\u00fd AFR za rok 2019 v\u00fdrazn\u011b vzrostl. AFR se zv\u00fd\u0161il u 75 % model\u016f od roku 2018 do roku 2019. Za t\u00edmto r\u016fstem stoj\u00ed dva hlavn\u00ed faktory. Za prv\u00e9, cel\u00e1 \u0159ada 8TB disk\u016f proch\u00e1z\u00ed \"kriz\u00ed st\u0159edn\u00edho v\u011bku\" s p\u0159ib\u00fdvaj\u00edc\u00edm pou\u017e\u00edv\u00e1n\u00edm. Nejvy\u0161\u0161\u00ed AFR vykazuj\u00ed disky ze skupiny 8 TB. I p\u0159es tak vysokou hodnotu AFR se nen\u00ed t\u0159eba p\u0159\u00edli\u0161 ob\u00e1vat. Faktem je, \u017ee tyto disky maj\u00ed za sebou 1\/4 dn\u00ed z cel\u00e9 na\u0161\u00ed statistiky a i mal\u00e1 zm\u011bna m\u016f\u017ee na ni m\u00edt dopad. Druh\u00fdm faktorem jsou 12TB disky od Seagate, tento probl\u00e9m je aktivn\u011b \u0159e\u0161en v r\u00e1mci projektu. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.backblaze.com\/blog\/drive-stats-update\">migrace na 12 TB<\/a><\/noindex>, o kter\u00e9m se ji\u017e d\u0159\u00edve informovalo.<\/p>\n<p><\/p>\n<h3 id=\"migraciya-zamedlyaetsya-a-rost---net\">Migrace se zpomaluje, zat\u00edmco r\u016fst pokra\u010duje<\/h3>\n<p><\/p>\n<p>V roce 2019 jsme p\u0159idali 17 729 nov\u00fdch s\u00ed\u0165ov\u00fdch disk\u016f. V roce 2018 bylo v\u011bt\u0161ina z 14 255 p\u0159idan\u00fdch disk\u016f pou\u017eita v r\u00e1mci migrace. V roce 2019 m\u00e9n\u011b ne\u017e polovina nov\u00fdch \u00falo\u017ei\u0161\u0165 byla ur\u010dena pro migraci, zat\u00edmco zb\u00fdvaj\u00edc\u00ed byly ur\u010deny pro nov\u00e9 syst\u00e9my. V roce 2019 jsme vy\u0159adili 8 800 disk\u016f v celkov\u00e9m objemu 37 petabajt\u016f a nahradili je 8 800 disky, v\u0161echny o velikosti 12 TB, co\u017e p\u0159edstavuje p\u0159ibli\u017en\u011b 105 petabajt\u016f, a pot\u00e9 v roce 2019 jsme p\u0159idali dal\u0161\u00ed 181 petabajt\u016f pro ukl\u00e1d\u00e1n\u00ed dat s vyu\u017eit\u00edm disk\u016f o velikosti 12 a 14 TB.<\/p>\n<p><\/p>\n<h3 id=\"raznoobrazie\">Rozmanitost<\/h3>\n<p><\/p>\n<p>Rozmanitost v\u00fdrobc\u016f podle zna\u010dek \u00falo\u017ei\u0161\u0165 m\u00edrn\u011b vzrostla v roce 2019. V roce 2018 tvo\u0159ily disky Seagate 78,15% \u00falo\u017ei\u0161\u0165, zat\u00edmco na konci roku 2019 se tento pod\u00edl sn\u00ed\u017eil na 73,28%. Pod\u00edl HGST vzrostl z 20,77% v roce 2018 na 23,69% v roce 2019, a Toshiba vzrostla z 1,34% v roce 2018 na 3,03% v roce 2019. V roce 2019 v na\u0161em datov\u00e9m centru nebyly \u017e\u00e1dn\u00e9 disky s logem Western Digital, proto\u017ee WDC prov\u00e1d\u011bl rebranding nov\u00fdch HGST disk\u016f.<\/p>\n<p><\/p>\n<h3 id=\"statistika-po-sroku-sluzhby\">Statistika \u017eivotnosti<\/h3>\n<p><\/p>\n<p>I kdy\u017e srovn\u00e1n\u00ed ro\u010dn\u00edch ukazatel\u016f selh\u00e1n\u00ed pevn\u00fdch disk\u016f po n\u011bkolik let je vynikaj\u00edc\u00ed zp\u016fsob, jak ur\u010dit trendy, tak\u00e9 sledujeme ro\u010dn\u00ed ukazatele selh\u00e1n\u00ed na\u0161ich pevn\u00fdch disk\u016f b\u011bhem cel\u00e9ho jejich \u017eivotn\u00edho cyklu. Na n\u00ed\u017ee uveden\u00e9m grafu je zn\u00e1zorn\u011bna ro\u010dn\u00ed frekvence selh\u00e1n\u00ed v\u0161ech model\u016f \u00falo\u017ei\u0161\u0165, kter\u00e9 byly v v\u00fdrob\u011b k 31. prosinci 2019:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Backblaze \u2014 statistika pevn\u00fdch disk\u016f za rok 2019.\" src=\"\/wp-content\/uploads\/2020\/02\/c5130e9baff1c7ea053fdaf8cf8f2433.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<h3 id=\"dannye\">\u00dadaje<\/h3>\n<p><\/p>\n<p>Kompletn\u00ed \u00fadaje jsou k dispozici na <noindex><a rel=\"nofollow\" href=\"https:\/\/www.backblaze.com\/b2\/hard-drive-test-data.html\">na\u0161\u00ed str\u00e1nce <\/a><\/noindex>.<\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/f001.backblazeb2.com\/file\/Backblaze_Blog\/2019_Drive_Stats_Chart_Data.zip\">ZIP soubor<\/a><\/noindex><\/p>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/488060\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041d\u0430 31 \u0434\u0435\u043a\u0430\u0431\u0440\u044f 2019 \u0433. \u0443 \u043d\u0430\u0441 124 956 \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0445 \u0436\u0435\u0441\u0442\u043a\u0438\u0445 \u0434\u0438\u0441\u043a\u043e\u0432. \u0418\u0437 \u043d\u0438\u0445 2 229 \u0437\u0430\u0433\u0440\u0443\u0437\u043e\u0447\u043d\u044b\u0445 \u0438 122 658 \u0441 \u0434\u0430\u043d\u043d\u044b\u043c\u0438. \u0412 \u0434\u0430\u043d\u043d\u043e\u043c \u043e\u0431\u0437\u043e\u0440\u0435 \u043c\u044b \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u0441\u0442\u0430\u0442\u0438\u0441\u0442\u0438\u043a\u0443 \u043f\u043e \u043e\u0442\u043a\u0430\u0437\u0430\u043c \u0441\u0440\u0435\u0434\u0438 \u0436\u0435\u0441\u0442\u043a\u0438\u0445 \u0434\u0438\u0441\u043a\u043e\u0432 \u0441 \u0434\u0430\u043d\u043d\u044b\u043c\u0438. \u0422\u0430\u043a\u0436\u0435 \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c 12 \u0438 14 TB \u0432\u0435\u0440\u0441\u0438\u0438 \u0434\u0438\u0441\u043a\u043e\u0432 \u0438 \u043d\u043e\u0432\u044b\u0435 16 TB, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043c\u044b \u0430\u043a\u0442\u0438\u0432\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c \u0441 \u043d\u0430\u0447\u0430\u043b\u0430 \u0447\u0435\u0442\u0432\u0435\u0440\u0442\u043e\u0433\u043e \u043a\u0432\u0430\u0440\u0442\u0430\u043b\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":41683,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-41682","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta 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