{"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\/no\/blog\/backblaze-statistika-zhestkih-diskov-za-2019","title":{"rendered":"Backblaze \u2014 statistikk for harddisker i 2019","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Backblaze \u2014 statistikk for harddisker i 2019\" src=\"\/wp-content\/uploads\/2020\/02\/45e329c5bd79d3ac657e5bb62bac1c1f.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Den 31. desember 2019 hadde vi 124 956 aktive harddisker. Blant disse var 2 229 oppstartsdisker og 122 658 datadisker. I denne gjennomgangen vil vi se p\u00e5 statistikken for feilrate blant datadiskene. Vi vil ogs\u00e5 ta for oss versjonene med 12 og 14 TB samt de nye 16 TB diskene, som vi har brukt aktivt siden starten av fjerde kvartal 2019. <\/p>\n<p><\/p>\n<h3 id=\"statistika-za-2019-god\">Statistikk for 2019<\/h3>\n<p><\/p>\n<p>Ved slutten av 2019 overv\u00e5ket vi 122 658 harddisker som ble brukt til datalagring. Vi ekskluderte fra beregningen disker som ble brukt til testing og disker som hadde en driftstid p\u00e5 mindre enn ~5 000 diskdager (per modell) i l\u00f8pet av fjerde kvartal. P\u00e5 denne m\u00e5ten samlet vi data basert p\u00e5 122 507 harddisker. Tabellen nedenfor viser v\u00e5r statistikk:<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p><img decoding=\"async\" alt=\"Backblaze \u2014 statistikk for harddisker i 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\">Notater og observasjoner<\/h3>\n<p><\/p>\n<p>151 harddisker (122 658 minus 122 507) ble ikke inkludert i statistikken. Disse diskene ble brukt til testing eller hadde ikke oppn\u00e5dd totalt 5 000 diskdager i l\u00f8pet av fjerde kvartal 2019. Dermed utelater vi fra statistikken disker som etter v\u00e5r mening ikke har v\u00e6rt i drift lenge nok til \u00e5 dra noen konklusjoner.<\/p>\n<p><\/p>\n<p>Den eneste feilfrie disken i 2019 var 4 TB Toshiba, modell: MD04ABA400V. Dette er et utmerket resultat, men siden vi hadde relativt f\u00e5 av disse diskene, ville vi med feilen av \u00e9n disk oppn\u00e5dd en rate p\u00e5 rundt 0,92 %. Fremdeles bra, men ikke lenger 0 %.<\/p>\n<p><\/p>\n<p>Toshiba 14 TB-modell MG07ACA14TA viser sv\u00e6rt gode resultater med en AFR p\u00e5 0,65 % og st\u00e5r sammen med diskene fra HGST. Seagate 6 TB og 10 TB holder seg stabilt p\u00e5 niv\u00e5ene 0,96 % og 1,00 % henholdsvis.<\/p>\n<p><\/p>\n<p>AFR for 2019 for alle disker var 1,89 %, som er betydelig h\u00f8yere enn i 2018. Dette skal vi diskutere senere.<\/p>\n<p><\/p>\n<h3 id=\"za-predelami-statistiki---skrytye-modeli-diskov\">Utenfor statistikken \u2014 \u00abskjulte\u00bb diskmodeller<\/h3>\n<p><\/p>\n<p>Mange modeller ble ikke inkludert i v\u00e5r statistikk for 2019 fordi de ikke hadde v\u00e6rt i drift lenge nok. Vi \u00f8nsker \u00e5 fortelle om disse modellene og hvordan vi bruker dem.<\/p>\n<p><\/p>\n<h3 id=\"seagate-16-tb\">Seagate 16 TB<\/h3>\n<p><\/p>\n<p>I fjerde kvartal av 2019 begynte vi kvalifiseringen av Seagate-harddiskene p\u00e5 16 TB, modell: ST16000NM001G. P\u00e5 slutten av fjerde kvartal hadde vi 40 enheter, noe som gir totalt 1 440 diskdager, betydelig under grensen p\u00e5 5 000 dager for v\u00e5r statistikk for 2019. I fjerde kvartal hadde disse diskene ingen feil. Hvis de best\u00e5r kvalifiseringen, vil de bli brukt til v\u00e5rt <noindex><a rel=\"nofollow\" href=\"https:\/\/www.backblaze.com\/blog\/drive-stats-update\">migrasjonsprosjekt<\/a><\/noindex> i \u00e5r.<\/p>\n<p><\/p>\n<h3 id=\"toshiba-8-tb\">Toshiba 8 TB<\/h3>\n<p><\/p>\n<p>I fjerde kvartal av 2019 var det 20 Toshiba 8 TB-disker, modell: HDWF180. Disse diskene har v\u00e6rt i drift i to \u00e5r. I fjerde kvartal hadde de bare 1 840 arbeidsdager, som er under grenseverdien for statistikk, men levetiden deres er 13 994 dager med kun en diskfeil, noe som gir oss en AFR p\u00e5 2,6 %. Vi liker disse diskene, men n\u00e5r vi kunne kj\u00f8pe dem i n\u00f8dvendige mengder, kostet de like mye som 12 TB. Mer kapasitet, samme pris. Gitt at vi g\u00e5r over til disker med kapasitet p\u00e5 16 TB eller mer, vil vi sannsynligvis ikke kj\u00f8pe disse diskene i fremtiden.<\/p>\n<p><\/p>\n<h3 id=\"hgst-10-tb\">HGST 10 TB<\/h3>\n<p><\/p>\n<p>Det er 20 HGST 10 TB-enheter i drift, modell: HUH721010ALE600. Disse diskene har v\u00e6rt i drift i litt over ett \u00e5r. De er i samme Backblaze-lagringsmilj\u00f8 som Seagate 10 TB-diskene. I l\u00f8pet av 4 kvartaler har HGST-enhetene jobbet i totalt 1 840 dager, og siden installasjon har de hatt 8 042 dager. Det har v\u00e6rt 0 (null) feil. Som med Toshiba 8 TB, er det lite sannsynlig at vi vil kj\u00f8pe flere 10 TB-versjoner.<\/p>\n<p><\/p>\n<h3 id=\"toshiba-16-tb\">Toshiba 16 TB<\/h3>\n<p><\/p>\n<p>Du finner dem ikke i statistikken for fjerde kvartal, men i f\u00f8rste kvartal 2020 la vi til 20 Toshiba-disker p\u00e5 16 TB, modell: MG08ACA16TA. De har v\u00e6rt i drift totalt 100 dager, s\u00e5 det er for tidlig \u00e5 snakke om noe annet enn statistikken for f\u00f8rste kvartal 2020.<\/p>\n<p><\/p>\n<h3 id=\"sravnenie-statistiki-zhestkih-diskov-za-2017-2018-i-2019-gg\">Sammenligning av statistikken for harddisker fra 2017, 2018 og 2019.<\/h3>\n<p><\/p>\n<p>I tabellen nedenfor sammenlignes \u00e5rlige feilsatser (AFR) for hvert av de tre siste \u00e5rene:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Backblaze \u2014 statistikk for harddisker i 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\">\u00d8kning i AFR i 2019<\/h3>\n<p><\/p>\n<p>Det totale AFR for 2019 har \u00f8kt betydelig. AFR \u00f8kte for 75% av modellene fra 2018 til 2019. Bak denne veksten st\u00e5r to hovedfaktorer. For det f\u00f8rste opplever hele serien av 8 TB-disker en \"middelalderkrise\" etter bruken. De h\u00f8yeste AFR-ene er fra diskene i 8 TB-gruppen. Til tross for det h\u00f8ye AFR-tallet, er det ikke n\u00f8dvendig \u00e5 bekymre seg for mye. Grunnen er at disse diskene har registrert 1\/4 av dagene fra all v\u00e5r statistikk, og selv sm\u00e5 endringer kan p\u00e5virke det. Den andre faktoren er Seagate-lagringsenheter p\u00e5 12 TB, dette problemet blir aktivt adressert gjennom prosjektet. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.backblaze.com\/blog\/drive-stats-update\">migration til 12 TB<\/a><\/noindex>, som tidligere rapporteret.<\/p>\n<p><\/p>\n<h3 id=\"migraciya-zamedlyaetsya-a-rost---net\">Migrationen g\u00e5r langsomt, men v\u00e6ksten stopper ikke<\/h3>\n<p><\/p>\n<p>I 2019 tilf\u00f8jede vi 17.729 nye netv\u00e6rksharddiske. I 2018 blev de fleste af de 14.255 tilf\u00f8jede diske brugt i forbindelse med migration. I 2019 var mindre end halvdelen af de nye lagringsenheder beregnet til migration, mens de \u00f8vrige blev brugt til nye systemer. I 2019 udfasede vi 8.800 diske med en samlet kapacitet p\u00e5 37 petabyte og erstattede dem med 8.800 diske, alle p\u00e5 12 TB, svarende til ca. 105 petabyte. Derefter tilf\u00f8jede vi yderligere 181 petabyte til datalagring ved hj\u00e6lp af diske p\u00e5 12 og 14 TB i 2019.<\/p>\n<p><\/p>\n<h3 id=\"raznoobrazie\">Mangfoldighed<\/h3>\n<p><\/p>\n<p>Mangfoldigheden af producenter af lagerenheder steg lidt i 2019. I 2018 udgjorde Seagate-diskene 78,15% af lagringsenhederne, men ved udgangen af 2019 faldt dette tal til 73,28%. HGST steg fra 20,77% i 2018 til 23,69% i 2019, mens Toshiba steg fra 1,34% i 2018 til 3,03% i 2019. I 2019 var der ingen diske med Western Digital's logo i datacentret, da WDC ombrandede de nye HGST-diske.<\/p>\n<p><\/p>\n<h3 id=\"statistika-po-sroku-sluzhby\">Levetidsstatistik<\/h3>\n<p><\/p>\n<p>Selvom sammenligning af \u00e5rlige fejlfrekvenser for h\u00e5rde diske over flere \u00e5r er en fremragende m\u00e5de til at identificere tendenser, ser vi ogs\u00e5 p\u00e5 de \u00e5rlige fejlfrekvenser for vores h\u00e5rde diske gennem hele deres levetid. Diagrammet nedenfor viser den \u00e5rlige fejlfrekvens for alle modeller af lagringsenheder, der var i produktion den 31. december 2019:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Backblaze \u2014 statistikk for harddisker i 2019\" src=\"\/wp-content\/uploads\/2020\/02\/c5130e9baff1c7ea053fdaf8cf8f2433.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<h3 id=\"dannye\">Data<\/h3>\n<p><\/p>\n<p>Et komplet datas\u00e6t er tilg\u00e6ngeligt p\u00e5 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.backblaze.com\/b2\/hard-drive-test-data.html\">vores side <\/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-fil<\/a><\/noindex><\/p>\n<p>Kilde: <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 5.0.5 - 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