{"id":56966,"date":"2021-03-12T14:47:58","date_gmt":"2021-03-12T22:47:58","guid":{"rendered":"https:drivesaversdatarecovery.com\/\/?p=56966"},"modified":"2026-02-25T05:45:56","modified_gmt":"2026-02-25T13:45:56","slug":"what-are-the-raid-5-requirements","status":"publish","type":"post","link":"https:\/\/drivesaversdatarecovery.com\/da-dk\/blog\/what-are-the-raid-5-requirements\/","title":{"rendered":"Hvad kr\u00e6ves for RAID 5?"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><div class=\"vc_row wpb_row vc_row-fluid wpex-relative\"><div class=\"wpb_column vc_column_container vc_col-sm-2\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-8\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\">\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p><span style=\"font-weight: 400;\">Hvad g\u00f8r du, hvis du er en lille eller mellemstor virksomhed \u2014 eller endda freelancer eller konsulent \u2014 og ikke har r\u00e5d til at investere i servere med h\u00f8j kapacitet? Du har stadig brug for drev med hurtige l\u00e6se- og skrivehastigheder og rigelig lagerplads, men omkostningerne er for h\u00f8je! Afh\u00e6ngigt af dine behov kan svaret v\u00e6re RAID 5. Men hvad kr\u00e6ves for RAID 5?<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Hvad er et RAID?<\/span><\/h2>\n<p class=\"translation-block\"><span style=\"font-weight: 400\">L\u00f8sninger til datalagring med Redundant Array of Independent Disks (RAID) er en fremragende m\u00e5de at maksimere ydeevnen af flere harddiske p\u00e5. <\/span><a href=\"https:\/\/drivesaversdatarecovery.com\/da-dk\/raid-comparison\/\" target=\"_self\"><span style=\"font-weight: 400\">Som vi tidligere har n\u00e6vnt<\/span><\/a><span style=\"font-weight: 400\">, udnytter RAID-konfigurationer kraften i b\u00e5de software <\/span><i><span style=\"font-weight: 400\">og<\/span><\/i><span style=\"font-weight: 400\"> hardware, s\u00e5 flere diske kan arbejde sammen. Resultatet er et overkommeligt og h\u00f8jtydende datalagringssystem.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Forskellige RAID-konfigurationer har hver deres fordele, ulemper og krav. I dag skal vi se n\u00e6rmere p\u00e5 RAID 5, fordi det er en popul\u00e6r l\u00f8sning og relativt nem at implementere. RAID 5 giver lynhurtige l\u00e6sehastigheder, og hvis en disk fejler, er det muligt at gendanne data. Det skyldes, at data deles op i sm\u00e5 stykker og fordeles p\u00e5 de tilsluttede drev. Denne metode kaldes paritet.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Der er selvf\u00f8lgelig nogle ting, du b\u00f8r vide, f\u00f8r du organiserer dine harddiske i en RAID 5-konfiguration. Hver type array har s\u00e6rlige krav for at fungere effektivt, og RAID 5 er ingen undtagelse. S\u00e5 hvad skal du vide, f\u00f8r du ops\u00e6tter RAID 5?<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">De 4 RAID 5-krav, du b\u00f8r kende<\/span><\/h2>\n<h3><span style=\"font-weight: 400;\">RAID 5-krav #1: Det rigtige antal drev<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Hvor mange fysiske drev kr\u00e6ves der for at implementere RAID 5? Med en RAID 5-konfiguration kan du tilslutte tre til seksten drev, men det mest almindelige antal er fire harddiske.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Selvom det mindste antal drev til RAID 5 er tre, v\u00e6lger de fleste brugere fire drev p\u00e5 grund af hastighed, fejltolerance og lagerkapacitet. Det kan virke lidt ulogisk, men jo flere harddiske der tilsluttes arrayet, desto langsommere bliver l\u00e6se- og skrivehastighederne. Og jo flere drev du tilf\u00f8jer, desto mere kompleks bliver datagendannelse, hvis et af drevene fejler.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Samtidig g\u00e6lder det, at jo f\u00e6rre drev der er tilsluttet arrayet, desto mere lagerplads g\u00e5r tabt. For eksempel falder den tilg\u00e6ngelige kapacitet med 33\u202f%, hvis du bruger tre harddiske. S\u00e5 hvis du tilslutter tre 1\u202fTB-drev (i alt 3\u202fTB) i en RAID 5-konfiguration, har du kun 2\u202fTB brugbar lagerplads.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Der er stadig lagerplads, der g\u00e5r tabt, selvom du bruger flere drev end minimumskravet til RAID 5, men reduktionen er mindre. RAID 5-konfigurationer mister altid lagerkapaciteten svarende til \u00e9t af de tilsluttede drev, uanset hvor mange der bruges. Tricket er at finde den rette balance mellem dine lagerbehov, ydelsesforventninger og risikotolerance.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">RAID 5-krav #2: Den rette lagerkapacitet<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">En vigtig faktor i vurderingen af, hvor mange drev der skal bruges i en RAID 5-konfiguration, er den samlede lagerkapacitet. I denne type array er det ligegyldigt, om der er tilsluttet tre eller seksten harddiske \u2013 de skal alle have den samme lagerkapacitet.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Hvorfor? Fordi hvis de tilsluttede harddiske ikke har identisk diskplads, vil de fungere som om de har kapaciteten af den mindste tilsluttede disk. At spilde v\u00e6rdifuld lagerplads er et stort no-go, og det skal undg\u00e5s for enhver pris!<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">RAID 5-krav #3: En dedikeret hardware-controller<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Nogle RAID-konfigurationer benytter software til at administrere og vedligeholde systemerne. Andre anvender hardwarebaserede l\u00f8sninger for at sikre korrekt funktion. I tilf\u00e6lde af RAID 5 anbefales det kraftigt at bruge en dedikeret hardware-controller.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">RAID 5-hardwarecontrollere er fysiske chips, der tilf\u00f8jes til bundkortet eller findes som selvst\u00e6ndige udvidelseskort. De er nyttige, fordi de kan beregne paritetsdata, f\u00f8r dataene skrives til alle drev. Controllerne administrerer hver enkelt disks fysiske plads og optimerer konfigurationens ydeevne ved at tilf\u00f8je ekstra diskcache.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">RAID 5-krav #4: Fejltolerance<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Du b\u00f8r bestemt overveje fejltolerance, f\u00f8r du konfigurerer din RAID-array. RAID 5 har faktisk en god fejltolerance, fordi systemet er designet til at fungere, selv hvis \u00e9n disk fejler. Og hvis du mister data, kan de genskabes ved hj\u00e6lp af paritetsdata fra de andre diske.<\/span><\/p>\n<p class=\"translation-block\"><span style=\"font-weight: 400\">Det er afg\u00f8rende at forst\u00e5 dette RAID\u202f5-krav, for i mods\u00e6tning til andre RAID-konfigurationer kan et RAID\u202f5-system kun t\u00e5le fejl p\u00e5 \u00e9n disk. Hvis flere drev svigter samtidigt, er chancerne for <a href=\"\/da-dk\/data-recovery-services\/devices-supported\/raid-nas-san\/raid-data-recovery\/\" target=\"_self\">datagendannelse<\/a> meget lavere. Gendannelse bliver desuden mere kompliceret og tidskr\u00e6vende, jo flere drev du tilf\u00f8jer til arrayet.<\/span><\/p>\n<p class=\"translation-block\"><span style=\"font-weight: 400\">Det er vigtigt at v\u00e6lge det rette antal drev til din RAID\u202f5-konfiguration, fordi antallet <\/span><i><span style=\"font-weight: 400\">har direkte indflydelse <\/span><\/i><span style=\"font-weight: 400\">p\u00e5 fejltolerancen.<\/span><\/p>\n<p class=\"translation-block\"><span style=\"font-weight: 400\">Hvis du st\u00e5r over for en defekt RAID\u202f5 eller problemer med en anden RAID-konfiguration, kan vi hj\u00e6lpe med at afg\u00f8re, om dine data kan gendannes. <\/span><a href=\"\/da-dk\/\" target=\"_self\"><span style=\"font-weight: 400\">Hvis dit RAID-array fejler, kontakt DriveSavers med det samme!<\/span><\/a><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-2\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><\/div><\/div><\/div><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"What do you do if you\u2019re a small to medium-sized business\u2014or even a freelancer or consultant\u2014 who can\u2019t afford the capital investment to buy high-capacity servers? You still need your drives to deliver fast read and write speeds with ample storage space, but the cost is so prohibitive! Depending on your needs, the answer might&hellip;","protected":false},"author":25,"featured_media":60243,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[264],"tags":[314],"post_series":[],"class_list":["post-56966","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-raid","entry","has-media"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>What are the RAID 5 Requirements?<\/title>\n<meta name=\"description\" content=\"A RAID array is a great way to maximize several hard drives\u2019 performance and storage. But there are specific conditions for each RAID type. 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