{"id":419,"date":"2018-08-15T13:21:15","date_gmt":"2018-08-15T20:21:15","guid":{"rendered":"https:\/\/www.karlstechnology.com\/blog\/?p=419"},"modified":"2019-05-28T15:28:09","modified_gmt":"2019-05-28T22:28:09","slug":"raid-levels-comparison","status":"publish","type":"post","link":"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/","title":{"rendered":"RAID Levels Comparison"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\"> Summary Comparison of RAID Levels <\/h3>\n\n\n\n<p>Below you will find a table that summarizes the key quantitative attributes of the various <a href=\"https:\/\/en.wikipedia.org\/wiki\/Standard_RAID_levels\">RAID levels<\/a> for easy comparison. For the full details on any RAID level, see its own page,\u00a0accessible here. For a description of the different characteristics, see\u00a0the discussion of factors differentiating RAID levels. Also be sure to read the notes that follow the table:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/05\/RAID-Level-comparisons.png\" alt=\"Comparison of all RAID Levels\" class=\"wp-image-420\" width=\"733\" height=\"470\" srcset=\"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/05\/RAID-Level-comparisons.png 733w, https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/05\/RAID-Level-comparisons-300x192.png 300w, https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/05\/RAID-Level-comparisons-624x400.png 624w\" sizes=\"(max-width: 733px) 100vw, 733px\" \/><\/figure><\/div>\n\n\n\n<p>Notes on the table:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>For the number of disks, the first few valid sizes are shown; you can figure out the rest from the examples given in most cases. Minimum size is the first number shown; maximum size is normally dictated by the controller. RAID 01\/10 and RAID 15\/51 must have an even number of drives, minimum 6. RAID 03\/30 and 05\/50 can only have sizes that are a product of integers, minimum 6.<\/li><li>For capacity and storage efficiency, &#8220;S&#8221; is the size of the smallest drive in the array, and &#8220;N&#8221; is the number of drives in the array. For the RAID 03 and 30, &#8220;N0&#8221; is the width of the RAID 0 dimension of the array, and &#8220;N3&#8221; is the width of the RAID 3 dimension. So a 12-disk RAID 30 array made by creating three 4-disk RAID 3 arrays and then striping them would have N3=4 and N0=3. The same applies for &#8220;N5&#8221; in the RAID 05\/50 row.<\/li><li>Storage efficiency assumes all drives are of identical size. If this is not the case, the universal computation (array capacity divided by the sum of all drive sizes) must be used.<\/li><li>Performance rankings are approximations and to some extent, reflect my personal opinions.&nbsp;<em>Please<\/em>&nbsp;don&#8217;t over-emphasize a &#8220;half-star&#8221; difference between two scores!<\/li><li>Cost is relative and approximate, of course. In the real world it will depend on many factors; the dollar signs are just intended to provide some perspective.<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<table class=\"wp-block-table\"><tbody><tr><td><strong>The PC Guide<\/strong><br>Site Version: 2.2.0 &#8211; Version Date: April 17, 2001<br>\u00a9 Copyright 1997-2004&nbsp;Charles M. Kozierok.&nbsp;All Rights Reserved.<\/td><\/tr><\/tbody><\/table>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>This is an archive of Charles M. Kozierok&#8217;s PCGuide (pcguide.com) which disappeared from the internet in 2018.  We wanted to preserve Charles M. Kozierok&#8217;s knowledge about computers and are permanently hosting a  selection of important pages from PCGuide.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Summary Comparison of RAID Levels Below you will find a table that summarizes the key quantitative attributes of the various RAID levels for easy comparison. For the full details on any RAID level, see its own page,\u00a0accessible here. For a description of the different characteristics, see\u00a0the discussion of factors differentiating RAID levels. Also be sure [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[16,40,48],"class_list":["post-419","post","type-post","status-publish","format-standard","hentry","category-computerrepair","tag-computer-repair","tag-hard-drive","tag-pcguide"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>RAID Levels Comparison - Computer Repair Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"RAID Levels Comparison - Computer Repair Blog\" \/>\n<meta property=\"og:description\" content=\"Summary Comparison of RAID Levels Below you will find a table that summarizes the key quantitative attributes of the various RAID levels for easy comparison. For the full details on any RAID level, see its own page,\u00a0accessible here. For a description of the different characteristics, see\u00a0the discussion of factors differentiating RAID levels. Also be sure [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/\" \/>\n<meta property=\"og:site_name\" content=\"Computer Repair Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/karlstechnology\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/kc7txm\" \/>\n<meta property=\"article:published_time\" content=\"2018-08-15T20:21:15+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-05-28T22:28:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/05\/RAID-Level-comparisons.png\" \/>\n<meta name=\"author\" content=\"kc7txm\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"kc7txm\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/\"},\"author\":{\"name\":\"kc7txm\",\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/#\/schema\/person\/f937c8fa616d9030d2d4716afcfe5a86\"},\"headline\":\"RAID Levels Comparison\",\"datePublished\":\"2018-08-15T20:21:15+00:00\",\"dateModified\":\"2019-05-28T22:28:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/\"},\"wordCount\":357,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/05\/RAID-Level-comparisons.png\",\"keywords\":[\"computer repair\",\"hard drive\",\"PCGuide\"],\"articleSection\":[\"Computer Repair\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/\",\"url\":\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/\",\"name\":\"RAID Levels Comparison - Computer Repair Blog\",\"isPartOf\":{\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/05\/RAID-Level-comparisons.png\",\"datePublished\":\"2018-08-15T20:21:15+00:00\",\"dateModified\":\"2019-05-28T22:28:09+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#primaryimage\",\"url\":\"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/05\/RAID-Level-comparisons.png\",\"contentUrl\":\"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/05\/RAID-Level-comparisons.png\",\"width\":733,\"height\":470},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.karlstechnology.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"RAID Levels Comparison\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/#website\",\"url\":\"https:\/\/www.karlstechnology.com\/blog\/\",\"name\":\"Computer Repair Blog\",\"description\":\"Karls Technology Computer Repair\",\"publisher\":{\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.karlstechnology.com\/blog\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/#organization\",\"name\":\"Karls Technology\",\"url\":\"https:\/\/www.karlstechnology.com\/blog\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/04\/karlstechnology.png\",\"contentUrl\":\"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/04\/karlstechnology.png\",\"width\":800,\"height\":99,\"caption\":\"Karls Technology\"},\"image\":{\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/karlstechnology\",\"https:\/\/x.com\/karlstechnology\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/#\/schema\/person\/f937c8fa616d9030d2d4716afcfe5a86\",\"name\":\"kc7txm\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.karlstechnology.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/9c44100002e6b21935601483ae93b357?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/9c44100002e6b21935601483ae93b357?s=96&d=mm&r=g\",\"caption\":\"kc7txm\"},\"description\":\"Matt Karls has a PhD in IT and is an Electrical Engineer. He works in management within the software development, IT and SEO fields and is the owner of Karls Technology. He has four kids and lives in the Phoenix metro area (when he is not travelling around to our different offices).\",\"sameAs\":[\"https:\/\/www.karlstechnology.com\/\",\"https:\/\/www.facebook.com\/kc7txm\",\"https:\/\/www.linkedin.com\/in\/matthew-daniel-karls-b2b16365\/\",\"https:\/\/x.com\/kc7txm\",\"https:\/\/www.youtube.com\/user\/kc7txm\",\"https:\/\/en.wikipedia.org\/wiki\/User:Kc7txm\"],\"url\":\"https:\/\/www.karlstechnology.com\/blog\/author\/kc7txm\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"RAID Levels Comparison - Computer Repair Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/","og_locale":"en_US","og_type":"article","og_title":"RAID Levels Comparison - Computer Repair Blog","og_description":"Summary Comparison of RAID Levels Below you will find a table that summarizes the key quantitative attributes of the various RAID levels for easy comparison. For the full details on any RAID level, see its own page,\u00a0accessible here. For a description of the different characteristics, see\u00a0the discussion of factors differentiating RAID levels. Also be sure [&hellip;]","og_url":"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/","og_site_name":"Computer Repair Blog","article_publisher":"https:\/\/www.facebook.com\/karlstechnology","article_author":"https:\/\/www.facebook.com\/kc7txm","article_published_time":"2018-08-15T20:21:15+00:00","article_modified_time":"2019-05-28T22:28:09+00:00","og_image":[{"url":"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/05\/RAID-Level-comparisons.png"}],"author":"kc7txm","twitter_misc":{"Written by":"kc7txm","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#article","isPartOf":{"@id":"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/"},"author":{"name":"kc7txm","@id":"https:\/\/www.karlstechnology.com\/blog\/#\/schema\/person\/f937c8fa616d9030d2d4716afcfe5a86"},"headline":"RAID Levels Comparison","datePublished":"2018-08-15T20:21:15+00:00","dateModified":"2019-05-28T22:28:09+00:00","mainEntityOfPage":{"@id":"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/"},"wordCount":357,"commentCount":0,"publisher":{"@id":"https:\/\/www.karlstechnology.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#primaryimage"},"thumbnailUrl":"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/05\/RAID-Level-comparisons.png","keywords":["computer repair","hard drive","PCGuide"],"articleSection":["Computer Repair"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/","url":"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/","name":"RAID Levels Comparison - Computer Repair Blog","isPartOf":{"@id":"https:\/\/www.karlstechnology.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#primaryimage"},"image":{"@id":"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#primaryimage"},"thumbnailUrl":"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/05\/RAID-Level-comparisons.png","datePublished":"2018-08-15T20:21:15+00:00","dateModified":"2019-05-28T22:28:09+00:00","breadcrumb":{"@id":"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#primaryimage","url":"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/05\/RAID-Level-comparisons.png","contentUrl":"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/05\/RAID-Level-comparisons.png","width":733,"height":470},{"@type":"BreadcrumbList","@id":"https:\/\/www.karlstechnology.com\/blog\/raid-levels-comparison\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.karlstechnology.com\/blog\/"},{"@type":"ListItem","position":2,"name":"RAID Levels Comparison"}]},{"@type":"WebSite","@id":"https:\/\/www.karlstechnology.com\/blog\/#website","url":"https:\/\/www.karlstechnology.com\/blog\/","name":"Computer Repair Blog","description":"Karls Technology Computer Repair","publisher":{"@id":"https:\/\/www.karlstechnology.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.karlstechnology.com\/blog\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.karlstechnology.com\/blog\/#organization","name":"Karls Technology","url":"https:\/\/www.karlstechnology.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.karlstechnology.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/04\/karlstechnology.png","contentUrl":"https:\/\/www.karlstechnology.com\/blog\/wp-content\/uploads\/2019\/04\/karlstechnology.png","width":800,"height":99,"caption":"Karls Technology"},"image":{"@id":"https:\/\/www.karlstechnology.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/karlstechnology","https:\/\/x.com\/karlstechnology"]},{"@type":"Person","@id":"https:\/\/www.karlstechnology.com\/blog\/#\/schema\/person\/f937c8fa616d9030d2d4716afcfe5a86","name":"kc7txm","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.karlstechnology.com\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/9c44100002e6b21935601483ae93b357?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/9c44100002e6b21935601483ae93b357?s=96&d=mm&r=g","caption":"kc7txm"},"description":"Matt Karls has a PhD in IT and is an Electrical Engineer. He works in management within the software development, IT and SEO fields and is the owner of Karls Technology. He has four kids and lives in the Phoenix metro area (when he is not travelling around to our different offices).","sameAs":["https:\/\/www.karlstechnology.com\/","https:\/\/www.facebook.com\/kc7txm","https:\/\/www.linkedin.com\/in\/matthew-daniel-karls-b2b16365\/","https:\/\/x.com\/kc7txm","https:\/\/www.youtube.com\/user\/kc7txm","https:\/\/en.wikipedia.org\/wiki\/User:Kc7txm"],"url":"https:\/\/www.karlstechnology.com\/blog\/author\/kc7txm\/"}]}},"_links":{"self":[{"href":"https:\/\/www.karlstechnology.com\/blog\/wp-json\/wp\/v2\/posts\/419"}],"collection":[{"href":"https:\/\/www.karlstechnology.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.karlstechnology.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.karlstechnology.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.karlstechnology.com\/blog\/wp-json\/wp\/v2\/comments?post=419"}],"version-history":[{"count":1,"href":"https:\/\/www.karlstechnology.com\/blog\/wp-json\/wp\/v2\/posts\/419\/revisions"}],"predecessor-version":[{"id":421,"href":"https:\/\/www.karlstechnology.com\/blog\/wp-json\/wp\/v2\/posts\/419\/revisions\/421"}],"wp:attachment":[{"href":"https:\/\/www.karlstechnology.com\/blog\/wp-json\/wp\/v2\/media?parent=419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.karlstechnology.com\/blog\/wp-json\/wp\/v2\/categories?post=419"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.karlstechnology.com\/blog\/wp-json\/wp\/v2\/tags?post=419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}