{"id":129,"date":"2026-07-08T08:15:00","date_gmt":"2026-07-08T08:15:00","guid":{"rendered":"https:\/\/new.intalio.pl\/infrastruktura-wysokiej-dostepnosci-dlaczego-jedna-serwerownia-to-za-malo\/"},"modified":"2026-11-02T11:16:26","modified_gmt":"2026-11-02T10:16:26","slug":"infrastruktura-wysokiej-dostepnosci-dlaczego-jedna-serwerownia-to-za-malo","status":"publish","type":"post","link":"https:\/\/www.intalio.pl\/en\/infrastruktura-wysokiej-dostepnosci-dlaczego-jedna-serwerownia-to-za-malo\/","title":{"rendered":"Infrastruktura wysokiej dost\u0119pno\u015bci &#8211; dlaczego jedna serwerownia to za ma\u0142o"},"content":{"rendered":"<p>Wiele organizacji zak\u0142ada, \u017ce&nbsp;skoro ich serwery stoj\u0105 w&nbsp;profesjonalnej serwerowni, s\u0105 automatycznie bezpieczne przed przestojem. W&nbsp;praktyce pojedyncza lokalizacja &#8211; niezale\u017cnie od tego, jak dobrze zabezpieczona &#8211; pozostaje pojedynczym punktem awarii (single point of failure). Przerwa w&nbsp;dostawie pr\u0105du, awaria klimatyzacji, uszkodzenie \u0142\u0105cza operatora czy&nbsp;zwyk\u0142y b\u0142\u0105d ludzki podczas prac serwisowych mog\u0105 wy\u0142\u0105czy\u0107 kluczowe systemy na&nbsp;godziny, a&nbsp;czasem i&nbsp;dni.<\/p>\n<p><strong>Czym r\u00f3\u017cni\u0105 si\u0119 poziomy dost\u0119pno\u015bci.<\/strong> Standard Uptime Institute definiuje cztery poziomy (Tier I-IV) opisuj\u0105ce odporno\u015b\u0107 infrastruktury na&nbsp;awarie. Tier III&nbsp;zak\u0142ada redundancj\u0119 kluczowych komponent\u00f3w z&nbsp;mo\u017cliwo\u015bci\u0105 prac serwisowych bez przestoju, natomiast&nbsp;Tier IV dodaje pe\u0142n\u0105 odporno\u015b\u0107 na&nbsp;pojedyncz\u0105 awari\u0119 dowolnego elementu &#8211; w&nbsp;tym r\u00f3wnolegle, niezale\u017cnie zasilane \u015bcie\u017cki dystrybucji energii i&nbsp;ch\u0142odzenia. W&nbsp;praktyce r\u00f3\u017cnica mi\u0119dzy tymi poziomami przek\u0142ada si\u0119 bezpo\u015brednio na&nbsp;deklarowan\u0105 dost\u0119pno\u015b\u0107 roczn\u0105 &#8211; od 99,982% dla&nbsp;Tier III&nbsp;do 99,995% dla&nbsp;Tier IV.<\/p>\n<p><strong>Replikacja synchroniczna vs asynchroniczna.<\/strong> Dla&nbsp;system\u00f3w krytycznych (bazy danych transakcyjnych, poczta, systemy finansowo-ksi\u0119gowe) kluczowy jest wyb\u00f3r modelu replikacji danych mi\u0119dzy lokalizacjami. Replikacja synchroniczna gwarantuje zerow\u0105 utrat\u0119 danych (RPO=0), ale&nbsp;wymaga niskich op\u00f3\u017anie\u0144 mi\u0119dzy o\u015brodkami i&nbsp;zwykle wi\u0119kszych nak\u0142ad\u00f3w na&nbsp;\u0142\u0105cza. Replikacja asynchroniczna jest ta\u0144sza i&nbsp;dzia\u0142a na&nbsp;wi\u0119ksze odleg\u0142o\u015bci, ale&nbsp;wi\u0105\u017ce si\u0119 z&nbsp;ryzykiem utraty kilku minut danych w&nbsp;skrajnym scenariuszu awarii.<\/p>\n<p><strong>Realne koszty w\u0142asne.<\/strong> Budowa \u015brodowiska HA to zawsze kompromis mi\u0119dzy kosztem a&nbsp;poziomem ryzyka akceptowalnym dla&nbsp;organizacji &#8211; nie ka\u017cdy system wymaga Tier IV. W&nbsp;Intalio zaczynamy ka\u017cdy projekt od klasyfikacji system\u00f3w wed\u0142ug ich krytyczno\u015bci biznesowej i&nbsp;dopiero na&nbsp;tej podstawie projektujemy architektur\u0119 &#8211; tak, by inwestycja w&nbsp;redundancj\u0119 by\u0142a proporcjonalna do&nbsp;rzeczywistego ryzyka, a&nbsp;nie wynika\u0142a z&nbsp;za\u0142o\u017cenia 'im wi\u0119cej, tym lepiej&#8217;.<\/p>\n<p>Realizujemy projekty w&nbsp;du\u017cych, z\u0142o\u017conych \u015brodowiskach IT r\u00f3wnie\u017c dla&nbsp;instytucji sektora publicznego, gdzie wymagania dost\u0119pno\u015bci s\u0105 szczeg\u00f3lnie wysokie &#8211; i&nbsp;to w\u0142a\u015bnie tam nauczyli\u015bmy si\u0119, \u017ce&nbsp;najdro\u017csza awaria to zawsze ta, kt\u00f3rej nikt nie przewidzia\u0142 na&nbsp;etapie projektowania.<\/p>","protected":false},"excerpt":{"rendered":"<p>Czy jedna serwerownia wystarczy do zapewnienia ci\u0105g\u0142o\u015bci dzia\u0142ania? Poznaj temat infrastruktury wysokiej dost\u0119pno\u015bci i ryzyka zale\u017cno\u015bci od jednej lokalizacji.<\/p>","protected":false},"author":1,"featured_media":216,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[8],"tags":[],"class_list":["post-129","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-infrastruktura"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Infrastruktura wysokiej dost\u0119pno\u015bci - dlaczego jedna serwerownia to za ma\u0142o - Intalio - In\u017cynieria Odporno\u015bci Cyfrowej<\/title>\n<meta name=\"description\" content=\"Czy jedna serwerownia wystarczy do zapewnienia ci\u0105g\u0142o\u015bci dzia\u0142ania? 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