{"id":34264,"date":"2019-10-31T21:57:17","date_gmt":"2019-10-31T18:57:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/glavnaya-prichina-avarij-v-data-tsentrah-prokladka-mezhdu-kompyuterom-i-kreslom\/"},"modified":"2019-10-31T21:57:17","modified_gmt":"2019-10-31T18:57:17","slug":"glavnaya-prichina-avarij-v-data-tsentrah-prokladka-mezhdu-kompyuterom-i-kreslom","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/glavnaya-prichina-avarij-v-data-tsentrah-prokladka-mezhdu-kompyuterom-i-kreslom","title":{"rendered":"Hlavn\u00ed p\u0159\u00ed\u010dina hav\u00e1ri\u00ed v datov\u00fdch centrech \u2013 kabel\u00e1\u017ee mezi po\u010d\u00edta\u010dem a \u017eidl\u00ed","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><em>T\u00e9ma velk\u00fdch hav\u00e1ri\u00ed v modern\u00edch datov\u00fdch centrech vyvol\u00e1v\u00e1 dotazy, na kter\u00e9 v prvn\u00edm \u010dl\u00e1nku nebylo odpov\u011bd\u00ed \u2014 rozhodli jsme se ho rozvinout.<\/em><\/p>\n<p>\n<img decoding=\"async\" alt=\"Hlavn\u00ed p\u0159\u00ed\u010dina hav\u00e1ri\u00ed v datov\u00fdch centrech \u2013 kabel\u00e1\u017ee mezi po\u010d\u00edta\u010dem a \u017eidl\u00ed\" src=\"\/wp-content\/uploads\/2019\/05\/83e10d080b0c1c6904d76ac3fb6610f1.jpg\" style=\"display:block;margin: 0 auto;\" \/><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>Pokud v\u011b\u0159it statistik\u00e1m Uptime Institute, v\u011bt\u0161ina incident\u016f v datov\u00fdch centrech souvis\u00ed s poruchami v nap\u00e1jec\u00edm syst\u00e9mu \u2014 na jejich pod\u00edl p\u0159ipad\u00e1 39 % ud\u00e1lost\u00ed. N\u00e1sleduje lidsk\u00fd faktor \u2014 to je dal\u0161\u00edch 24 % hav\u00e1ri\u00ed. T\u0159et\u00ed nejv\u00fdznamn\u011bj\u0161\u00ed p\u0159\u00ed\u010dinou (15 %) byly poruchy klimatiza\u010dn\u00edho syst\u00e9mu, a na \u010dtvrt\u00e9m m\u00edst\u011b (12 %) se ocitly p\u0159\u00edrodn\u00ed katastrofy. Celkov\u00fd pod\u00edl ostatn\u00edch nep\u0159\u00edjemnost\u00ed \u010din\u00ed pouze 10 %. Nezpochyb\u0148uj\u00edc data t\u00e9to respektovan\u00e9 organizace, vyzdvihneme v r\u016fzn\u00fdch hav\u00e1ri\u00edch n\u011bco spole\u010dn\u00e9ho a pokus\u00edme se pochopit, zda bylo mo\u017en\u00e9 je p\u0159edej\u00edt. Spoiler: ve v\u011bt\u0161in\u011b p\u0159\u00edpad\u016f ano.<\/p>\n<p><\/p>\n<h2>V\u011bda o kontaktech<\/h2>\n<p><\/p>\n<p>Zjednodu\u0161en\u011b \u0159e\u010deno, u elektrick\u00e9ho nap\u00e1jen\u00ed existuj\u00ed pouze dva probl\u00e9my: bu\u010f kontakt nen\u00ed tam, kde by m\u011bl b\u00fdt, nebo je tam, kde by b\u00fdt nem\u011bl. Lze dlouho debatovat o spolehlivosti modern\u00edch syst\u00e9m\u016f nep\u0159eru\u0161ovan\u00e9ho nap\u00e1jen\u00ed, ale ne v\u017edy zachra\u0148uj\u00ed situaci. Nap\u0159\u00edklad si vezm\u011bme proslul\u00fd p\u0159\u00edpad s centrem zpracov\u00e1n\u00ed dat spole\u010dnosti British Airways, pat\u0159\u00edc\u00edm mate\u0159sk\u00e9 spole\u010dnosti International Airlines Group. Nedaleko leti\u0161t\u011b Heathrow se nach\u00e1zej\u00ed dv\u011b takov\u00e9 budovy \u2014 Boadicea House a Comet House. V prvn\u00ed z nich do\u0161lo 27. kv\u011btna 2017 k n\u00e1hodn\u00e9mu vypnut\u00ed nap\u00e1jen\u00ed, kter\u00e9 vedlo k p\u0159et\u00ed\u017een\u00ed a selh\u00e1n\u00ed syst\u00e9mu UPS. V d\u016fsledku toho bylo \u010d\u00e1st IT za\u0159\u00edzen\u00ed fyzicky po\u0161kozeno a odstran\u011bn\u00ed posledn\u00ed hav\u00e1rie trvalo t\u0159i dny. <\/p>\n<p><\/p>\n<p>Spole\u010dnost byla nucena zru\u0161it nebo p\u0159esunout v\u00edce ne\u017e tis\u00edc let\u016f, p\u0159ibli\u017en\u011b 75 tis\u00edc cestuj\u00edc\u00edch nemohlo odlet\u011bt v\u010das \u2014 na vyplacen\u00ed kompenzac\u00ed bylo vynalo\u017eeno 128 milion\u016f dolar\u016f, nepo\u010d\u00edtaje n\u00e1klady na obnoven\u00ed fungov\u00e1n\u00ed datov\u00fdch center. Historie p\u0159\u00ed\u010din blackout\u016f z\u016fst\u00e1v\u00e1 nejasn\u00e1. Pokud v\u011b\u0159it v\u00fdsledk\u016fm intern\u00edho vy\u0161et\u0159ov\u00e1n\u00ed, kter\u00e9 ozn\u00e1mil gener\u00e1ln\u00ed \u0159editel International Airlines Group Willie Walsh, k n\u011bmu do\u0161lo kv\u016fli chyb\u011b in\u017een\u00fdr\u016f. Nicm\u00e9n\u011b, syst\u00e9m nep\u0159eru\u0161ovan\u00e9ho nap\u00e1jen\u00ed by m\u011bl takov\u00e9 vypnut\u00ed vydr\u017eet \u2014 pr\u00e1v\u011b proto byl nainstalov\u00e1n. Datov\u00e1 centra spravovali odborn\u00edci z outsourcingov\u00e9 spole\u010dnosti CBRE Managed Services, tak\u017ee British Airways se pokusila uplatnit n\u00e1rok na n\u00e1hradu \u0161kody prost\u0159ednictv\u00edm lond\u00fdnsk\u00e9ho soudu. <\/p>\n<p>\n<img decoding=\"async\" alt=\"Hlavn\u00ed p\u0159\u00ed\u010dina hav\u00e1ri\u00ed v datov\u00fdch centrech \u2013 kabel\u00e1\u017ee mezi po\u010d\u00edta\u010dem a \u017eidl\u00ed\" src=\"\/wp-content\/uploads\/2019\/05\/db9591f5fdae2a173f76ddee3275d2ee.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Poruchy dod\u00e1vky elektrick\u00e9 energie se obvykle vyskytuj\u00ed podle podobn\u00fdch sc\u00e9n\u00e1\u0159\u016f: nejprve dojde k v\u00fdpadku ze strany dodavatele, n\u011bkdy kv\u016fli \u0161patn\u00e9mu po\u010das\u00ed nebo intern\u00edm probl\u00e9m\u016fm (v\u010detn\u011b chyb person\u00e1lu), a pak syst\u00e9m nep\u0159eru\u0161en\u00e9ho nap\u00e1jen\u00ed neustoj\u00ed z\u00e1t\u011b\u017e nebo kr\u00e1tkodob\u00e9 p\u0159eru\u0161en\u00ed sinusoidy zp\u016fsob\u00ed selh\u00e1n\u00ed mnoha slu\u017eeb, na jejich\u017e obnoven\u00ed je t\u0159eba spoustu \u010dasu a pen\u011bz. Lze takov\u00fdm poruch\u00e1m p\u0159edej\u00edt? Bezpochyby. Pokud je syst\u00e9m spr\u00e1vn\u011b navr\u017een, nicm\u00e9n\u011b ani tv\u016frci velk\u00fdch datov\u00fdch center nejsou imunn\u00ed v\u016f\u010di chyb\u00e1m. <\/p>\n<p><\/p>\n<h2>Lidsk\u00fd faktor<\/h2>\n<p><\/p>\n<p>Kdy\u017e se bezprost\u0159edn\u00ed p\u0159\u00ed\u010dinou incidentu st\u00e1vaj\u00ed nespr\u00e1vn\u00e9 jedn\u00e1n\u00ed person\u00e1lu datov\u00e9ho centra, probl\u00e9my v\u011bt\u0161inou (ale ne v\u017edy) zasahuj\u00ed softwarovou \u010d\u00e1st IT infrastruktury. Takov\u00e9 poruchy se vyskytuj\u00ed i v large korporac\u00edch. V \u00fanoru 2017 byla \u010d\u00e1ste\u010dn\u011b odpojena \u010d\u00e1st server\u016f Amazon Web Services kv\u016fli nespr\u00e1vn\u011b zadan\u00e9mu p\u0159\u00edkazu jedn\u00edm z \u010dlen\u016f t\u00fdmu technick\u00e9ho provozu jednoho z datov\u00fdch center. K chyb\u011b do\u0161lo b\u011bhem lad\u011bn\u00ed procesu fakturace z\u00e1kazn\u00edk\u016fm cloudov\u00e9ho \u00falo\u017ei\u0161t\u011b Amazon Simple Storage Service (S3). Zam\u011bstnanec se pokou\u0161el odstranit ur\u010dit\u00e9 mno\u017estv\u00ed virtu\u00e1ln\u00edch server\u016f vyu\u017e\u00edvan\u00fdch faktura\u010dn\u00edm syst\u00e9mem, ale zas\u00e1hl v\u011bt\u0161\u00ed cluster.<\/p>\n<p>\n<img decoding=\"async\" alt=\"Hlavn\u00ed p\u0159\u00ed\u010dina hav\u00e1ri\u00ed v datov\u00fdch centrech \u2013 kabel\u00e1\u017ee mezi po\u010d\u00edta\u010dem a \u017eidl\u00ed\" src=\"\/wp-content\/uploads\/2019\/05\/794f6279f898398b0ec1fa33c9c47a35.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>V d\u016fsledku in\u017een\u00fdrsk\u00e9 chyby byly odstran\u011bny servery, na nich\u017e b\u011b\u017eely d\u016fle\u017eit\u00e9 softwarov\u00e9 moduly cloudov\u00e9ho \u00falo\u017ei\u0161t\u011b Amazon. Jako prvn\u00ed byla posti\u017eena subsyst\u00e9m indexace, kter\u00e1 obsahovala informace o metadatech a um\u00edst\u011bn\u00ed v\u0161ech objekt\u016f S3 v americk\u00e9m regionu US-EAST-1. Incidentu byla rovn\u011b\u017e zas\u00e1hnuta subsyst\u00e9m pou\u017e\u00edvan\u00e1 pro ukl\u00e1d\u00e1n\u00ed dat a spr\u00e1vu dostupn\u00e9ho prostoru pro ukl\u00e1d\u00e1n\u00ed. Po odstran\u011bn\u00ed virtu\u00e1ln\u00edch stroj\u016f si ob\u011b tyto subsyst\u00e9my vy\u017e\u00e1daly \u00fapln\u00e9 restartov\u00e1n\u00ed a in\u017een\u00fdry Amazonu \u010dekalo p\u0159ekvapen\u00ed - po dlouhou dobu ve\u0159ejn\u00e9 cloudov\u00e9 \u00falo\u017ei\u0161t\u011b nebylo schopn\u00e9 obslou\u017eit \u017e\u00e1dosti z\u00e1kazn\u00edk\u016f. <\/p>\n<p><\/p>\n<p>\u00da\u010dinek se uk\u00e1zal b\u00fdt rozs\u00e1hl\u00fd, proto\u017ee mnoho velk\u00fdch zdroj\u016f pou\u017e\u00edv\u00e1 Amazon S3. V\u00fdpadky se dotkly Trello, Coursera, IFTTT a, co je nejhor\u0161\u00ed, slu\u017eeb velk\u00fdch partner\u016f Amazonu na seznamu S&amp;P 500. \u0160kody v takov\u00fdch p\u0159\u00edpadech nelze snadno spo\u010d\u00edtat, ale jejich v\u00fd\u0161e se pohybovala okolo stovek milion\u016f dolar\u016f. Jak vid\u00edte, k vy\u0159azen\u00ed slu\u017eby nejv\u011bt\u0161\u00ed cloudov\u00e9 platformy sta\u010d\u00ed jeden chybn\u00fd p\u0159\u00edkaz. To nen\u00ed ojedin\u011bl\u00fd p\u0159\u00edpad, 16. kv\u011btna 2019 b\u011bhem preventivn\u00edch prac\u00ed slu\u017eba Yandex.Cloud <noindex><a rel=\"nofollow\" href=\"https:\/\/cloud.yandex.ru\/blog\/posts\/2019\/05\/16information\">odstranil<\/a><\/noindex> virtu\u00e1ln\u00ed stroje u\u017eivatel\u016f v z\u00f3n\u011b ru-central1-c, kter\u00e9 n\u011bkdy byly ve stavu SUSPENDED. Zde u\u017e do\u0161lo k po\u0161kozen\u00ed z\u00e1kaznick\u00fdch dat, \u010d\u00e1st z nich byla nen\u00e1vratn\u011b ztracena. Samoz\u0159ejm\u011b, lid\u00e9 nejsou dokonal\u00ed, ale modern\u00ed informa\u010dn\u00ed bezpe\u010dnostn\u00ed syst\u00e9my um\u011bj\u00ed u\u017e d\u00e1vno sledovat \u010dinnosti privilegovan\u00fdch u\u017eivatel\u016f p\u0159ed proveden\u00edm zadan\u00fdch p\u0159\u00edkaz\u016f. Pokud by do Yandexu nebo Amazonu implementovali takov\u00e1 \u0159e\u0161en\u00ed, podobn\u00fdm incident\u016fm by se dalo p\u0159edej\u00edt.<\/p>\n<p>\n<img decoding=\"async\" alt=\"Hlavn\u00ed p\u0159\u00ed\u010dina hav\u00e1ri\u00ed v datov\u00fdch centrech \u2013 kabel\u00e1\u017ee mezi po\u010d\u00edta\u010dem a \u017eidl\u00ed\" src=\"\/wp-content\/uploads\/2019\/05\/d23051684b1ff55dde6b5d0c4ce879d2.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h2>Zamrzl\u00e9 chlazen\u00ed<\/h2>\n<p><\/p>\n<p>V lednu 2017 do\u0161lo k velk\u00e9 hav\u00e1rii v datov\u00e9m centru spole\u010dnosti \"MegaFon\" v Dmitrov\u011b. Tehdy teplota v moskevsk\u00e9m regionu klesla na \u221235 \u00b0C, co\u017e vedlo k poru\u0161e chladic\u00edho syst\u00e9mu objektu. Tiskov\u00e1 slu\u017eba oper\u00e1tora se o p\u0159\u00ed\u010din\u00e1ch incidentu p\u0159\u00edli\u0161 neroz\u0161\u00ed\u0159ila - rusk\u00e9 firmy velmi nerady mluv\u00ed o hav\u00e1ri\u00edch ve sv\u00fdch objektech, v oblasti publicity za z\u00e1padem hodn\u011b zaost\u00e1v\u00e1me. Na soci\u00e1ln\u00edch s\u00edt\u00edch kolovala verze o zamrz\u00e1n\u00ed chladiva v potrub\u00edch polo\u017een\u00fdch po ulici a \u00faniku ethylenglykolu. Pokud ji v\u011b\u0159it, provozn\u00ed slu\u017eba nemohla kv\u016fli dlouh\u00fdm sv\u00e1tk\u016fm operativn\u011b z\u00edskat 30 tun chladiva a improvizovala s pou\u017eit\u00edm dostupn\u00fdch prost\u0159edk\u016f, organizovala improvizovan\u00e9 freecooling s poru\u0161en\u00edm pravidel provozu syst\u00e9mu. Siln\u00e9 mrazy probl\u00e9m zhor\u0161ily - v lednu v Rusku n\u00e1hle nastala zima, a\u010dkoli nikdo ji ne\u010dekal. Nakonec person\u00e1lu nezbylo ne\u017e odpojit \u010d\u00e1st serverov\u00fdch stojan\u016f, kv\u016fli \u010demu\u017e n\u011bkter\u00e9 slu\u017eby oper\u00e1tora nebyly k dispozici po dobu dvou dn\u016f. <\/p>\n<p>\n<img decoding=\"async\" alt=\"Hlavn\u00ed p\u0159\u00ed\u010dina hav\u00e1ri\u00ed v datov\u00fdch centrech \u2013 kabel\u00e1\u017ee mezi po\u010d\u00edta\u010dem a \u017eidl\u00ed\" src=\"\/wp-content\/uploads\/2019\/05\/7db1dc6ff496a400b401e375aa0728b6.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Mo\u017en\u00e1 bychom mohli hovo\u0159it i o klimatick\u00fdch anom\u00e1li\u00edch, ale takov\u00e9 mrazy nejsou pro metropolitn\u00ed region ni\u010d\u00edm neobvykl\u00fdm. Teplota v zim\u011b v Moskevsk\u00e9 oblasti m\u016f\u017ee klesat i pod mnohem ni\u017e\u0161\u00ed hodnoty, proto se datov\u00e1 centra stav\u00ed s ohledem na stabiln\u00ed provoz p\u0159i \u221242\u00b0C. Nej\u010dast\u011bji syst\u00e9my chlazen\u00ed v mrazu selh\u00e1vaj\u00ed kv\u016fli nedostate\u010dn\u00e9 koncentraci glykolu a nadbytku vody v roztoku chladic\u00ed kapaliny. Objevuj\u00ed se tak\u00e9 probl\u00e9my s mont\u00e1\u017e\u00ed trubek nebo s chybami v projektov\u00e1n\u00ed a testov\u00e1n\u00ed syst\u00e9mu, v\u011bt\u0161inou spojen\u00fdmi s touhou u\u0161et\u0159it. Nakonec na rovin\u011b dojde k v\u00e1\u017en\u00e9 hav\u00e1rii, kterou by \u0161lo \u00fadajn\u011b p\u0159edej\u00edt.<\/p>\n<p><\/p>\n<h2>P\u0159\u00edrodn\u00ed katastrofy <\/h2>\n<p><\/p>\n<p>Nej\u010dast\u011bji bou\u0159e a\/nebo hurik\u00e1ny naru\u0161uj\u00ed \u010dinnost in\u017een\u00fdrsk\u00e9 infrastruktury datov\u00e9ho centra, co\u017e vede k zastaven\u00ed slu\u017eeb a\/nebo k fyzick\u00e9mu po\u0161kozen\u00ed za\u0159\u00edzen\u00ed. Incidenty vyvolan\u00e9 \u0161patn\u00fdm po\u010das\u00edm se vyskytuj\u00ed pom\u011brn\u011b \u010dasto. V roce 2012 se pod\u00e9l z\u00e1padn\u00edho pob\u0159e\u017e\u00ed USA prohnal hurik\u00e1n Sandy s intenzivn\u00edm de\u0161t\u011bm. Datov\u00e9 centrum Peer 1, um\u00edst\u011bn\u00e9 v v\u00fd\u0161kov\u00e9 budov\u011b na doln\u00edm Manhattanu, <noindex><a rel=\"nofollow\" href=\"https:\/\/insights.dice.com\/2012\/12\/07\/how-peer1-survived-sandy\/\">p\u0159i\u0161lo o extern\u00ed elektrick\u00e9 nap\u00e1jen\u00ed<\/a><\/noindex>, pot\u00e9 co slan\u00e1 mo\u0159sk\u00e1 voda zaplnila sklepy. N\u00e1hradn\u00ed gener\u00e1tory objektu byly um\u00edst\u011bny v 18. pat\u0159e a z\u00e1soba paliva pro n\u011b byla omezen\u00e1 \u2014 nov\u00e1 pravidla zaveden\u00e1 v New Yorku po teroristick\u00fdch \u00fatoc\u00edch 11. z\u00e1\u0159\u00ed zakazuj\u00ed uchov\u00e1vat velk\u00e9 mno\u017estv\u00ed ho\u0159lav\u00e9ho materi\u00e1lu na horn\u00edch patrech. <\/p>\n<p>\n<center><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/player.vimeo.com\/video\/68154979\" frameborder=\"0\" allowfullscreen><\/iframe><\/center><\/p>\n<p>Palivov\u00e9 \u010derpadlo tak\u00e9 selhalo, a proto person\u00e1l n\u011bkolik dn\u00ed nosil naftu pro gener\u00e1tory manu\u00e1ln\u011b. Hrdinstv\u00ed t\u00fdmu zachr\u00e1nilo datov\u00e9 centrum p\u0159ed v\u00e1\u017enou hav\u00e1ri\u00ed, ale bylo to skute\u010dn\u011b nutn\u00e9? \u017dijeme na planet\u011b s dus\u00edkovo-kysl\u00edkovou atmosf\u00e9rou a velk\u00fdm mno\u017estv\u00edm vody. Bou\u0159e a hurik\u00e1ny jsou zde b\u011b\u017en\u00e9 (zejm\u00e9na v p\u0159\u00edmo\u0159sk\u00fdch oblastech). Projektanti by pravd\u011bpodobn\u011b m\u011bli vz\u00edt v \u00favahu rizika s nimi spojen\u00e1 a postavit odpov\u00eddaj\u00edc\u00ed syst\u00e9m nep\u0159etr\u017eit\u00e9ho nap\u00e1jen\u00ed. Nebo alespo\u0148 zvolit pro datov\u00e9 centrum vhodn\u011bj\u0161\u00ed m\u00edsto ne\u017e v\u00fd\u0161kovou budovu na ostrov\u011b.<\/p>\n<p><\/p>\n<h2>V\u0161e ostatn\u00ed <\/h2>\n<p><\/p>\n<p>Tato kategorie zahrnuje r\u016fzn\u00e9 incidenty, mezi nimi\u017e je obt\u00ed\u017en\u00e9 vybrat typick\u00fd. Kr\u00e1de\u017ee m\u011bd\u011bn\u00fdch kabel\u016f, n\u00e1pady na vniknut\u00ed do datov\u00fdch center, podp\u011bry vysok\u00e9ho nap\u011bt\u00ed a transforma\u010dn\u00ed stanice automobil\u016f, po\u017e\u00e1ry, kter\u00e9 po\u0161kozuj\u00ed optiku exkav\u00e1tor\u016f, hlodavci (potkani, kr\u00e1l\u00edci a dokonce vombati, kte\u0159\u00ed pat\u0159\u00ed mezi va\u010dnatce), stejn\u011b jako ti, kdo si r\u00e1di zkus\u00ed st\u0159\u00edlen\u00ed do kabel\u016f \u2014 nab\u00eddka je rozs\u00e1hl\u00e1. Poruchy v dod\u00e1vce elekt\u0159iny m\u016f\u017ee zp\u016fsobit i <noindex><a rel=\"nofollow\" href=\"https:\/\/www.datacenterknowledge.com\/archives\/2011\/03\/09\/criminals-critters-cause-utility-outages\">kradouc\u00ed<\/a><\/noindex> elekt\u0159inu ileg\u00e1ln\u00ed marihuanov\u00e1 plant\u00e1\u017e. V\u011bt\u0161inou jsou vin\u00edky incidentu konkr\u00e9tn\u00ed lid\u00e9, tj. op\u011bt se setk\u00e1v\u00e1me s lidsk\u00fdm faktorem, kdy probl\u00e9m m\u00e1 jm\u00e9no a p\u0159\u00edjmen\u00ed. I kdy\u017e se na prvn\u00ed pohled m\u016f\u017ee zd\u00e1t, \u017ee nehoda souvis\u00ed s technickou z\u00e1vadou nebo s p\u0159\u00edrodn\u00edmi katastrofami, lze j\u00ed p\u0159edej\u00edt, pokud je objekt spr\u00e1vn\u011b navr\u017een a provozov\u00e1n. V\u00fdjimkou jsou snad jen p\u0159\u00edpady kritick\u00e9ho po\u0161kozen\u00ed infrastruktury datov\u00e9ho centra nebo zni\u010den\u00ed budov a objekt\u016f kv\u016fli p\u0159\u00edrodn\u00ed katastrof\u011b. To jsou skute\u010dn\u011b mimo\u0159\u00e1dn\u00e9 okolnosti, zat\u00edmco v\u0161echny ostatn\u00ed probl\u00e9my vypl\u00fdvaj\u00ed z veden\u00ed mezi po\u010d\u00edta\u010dem a \u017eidl\u00ed \u2014 to je pravd\u011bpodobn\u011b nejm\u00e9n\u011b spolehliv\u00e1 \u010d\u00e1st jak\u00e9hokoli slo\u017eit\u00e9ho syst\u00e9mu.<\/p>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/delta\/blog\/452962\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0422\u0435\u043c\u0430 \u043a\u0440\u0443\u043f\u043d\u044b\u0445 \u0430\u0432\u0430\u0440\u0438\u0439 \u0432 \u0441\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 \u0426\u041e\u0414 \u0432\u044b\u0437\u044b\u0432\u0430\u0435\u0442 \u0432\u043e\u043f\u0440\u043e\u0441\u044b, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0432 \u043f\u0435\u0440\u0432\u043e\u0439 \u0441\u0442\u0430\u0442\u044c\u0435 \u043d\u0435 \u0431\u044b\u043b\u043e \u043e\u0442\u0432\u0435\u0442\u043e\u0432 \u2014 \u043c\u044b \u0440\u0435\u0448\u0438\u043b\u0438 \u0435\u0435 \u0440\u0430\u0437\u0432\u0438\u0442\u044c. \u0415\u0441\u043b\u0438 \u0432\u0435\u0440\u0438\u0442\u044c \u0441\u0442\u0430\u0442\u0438\u0441\u0442\u0438\u043a\u0435 Uptime Institute, \u0431\u043e\u043b\u044c\u0448\u0430\u044f \u0447\u0430\u0441\u0442\u044c \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u043e\u0432 \u0432 \u0434\u0430\u0442\u0430-\u0446\u0435\u043d\u0442\u0440\u0430\u0445 \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043e\u0442\u043a\u0430\u0437\u0430\u043c\u0438 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u0441\u043d\u0430\u0431\u0436\u0435\u043d\u0438\u044f \u2014 \u043d\u0430 \u0438\u0445 \u0434\u043e\u043b\u044e \u043f\u0440\u0438\u0445\u043e\u0434\u0438\u0442\u0441\u044f 39 % \u043f\u0440\u043e\u0438\u0441\u0448\u0435\u0441\u0442\u0432\u0438\u0439. \u0417\u0430 \u043d\u0438\u043c\u0438 \u0441\u043b\u0435\u0434\u0443\u0435\u0442 \u0447\u0435\u043b\u043e\u0432\u0435\u0447\u0435\u0441\u043a\u0438\u0439 \u0444\u0430\u043a\u0442\u043e\u0440 \u2014 \u044d\u0442\u043e \u0435\u0449\u0435 24 % \u0430\u0432\u0430\u0440\u0438\u0439. [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":25843,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-34264","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=\"\u0422\u0435\u043c\u0430 \u043a\u0440\u0443\u043f\u043d\u044b\u0445 \u0430\u0432\u0430\u0440\u0438\u0439 \u0432 \u0441\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 \u0426\u041e\u0414 \u0432\u044b\u0437\u044b\u0432\u0430\u0435\u0442 \u0432\u043e\u043f\u0440\u043e\u0441\u044b, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0432 \u043f\u0435\u0440\u0432\u043e\u0439 \u0441\u0442\u0430\u0442\u044c\u0435 \u043d\u0435 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