{"id":365,"date":"2020-04-04T22:33:52","date_gmt":"2020-04-04T20:33:52","guid":{"rendered":"https:\/\/tekmart.co.za\/t-blog\/?p=365"},"modified":"2020-04-04T22:37:44","modified_gmt":"2020-04-04T20:37:44","slug":"how-to-extend-a-virtual-disk-allowing-you-to-expand-the-raid-size","status":"publish","type":"post","link":"https:\/\/tekmart.co.za\/t-blog\/how-to-extend-a-virtual-disk-allowing-you-to-expand-the-raid-size\/","title":{"rendered":"How to extend a Virtual Disk allowing you to expand the RAID size."},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time-approximately:<\/span> <span class=\"rt-time\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"365\" class=\"elementor elementor-365\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-42f531c2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"42f531c2\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-218fa48e\" data-id=\"218fa48e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8aa09fb elementor-widget elementor-widget-image\" data-id=\"8aa09fb\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"545\" src=\"https:\/\/tekmart.co.za\/t-blog\/wp-content\/uploads\/2020\/04\/Increasing-raid-volume-dell-1024x545.png\" class=\"attachment-large size-large wp-image-368\" alt=\"Increasing raid volume dell\" srcset=\"https:\/\/tekmart.co.za\/t-blog\/wp-content\/uploads\/2020\/04\/Increasing-raid-volume-dell-1024x545.png 1024w, https:\/\/tekmart.co.za\/t-blog\/wp-content\/uploads\/2020\/04\/Increasing-raid-volume-dell-300x160.png 300w, https:\/\/tekmart.co.za\/t-blog\/wp-content\/uploads\/2020\/04\/Increasing-raid-volume-dell-768x408.png 768w, https:\/\/tekmart.co.za\/t-blog\/wp-content\/uploads\/2020\/04\/Increasing-raid-volume-dell-800x425.png 800w, https:\/\/tekmart.co.za\/t-blog\/wp-content\/uploads\/2020\/04\/Increasing-raid-volume-dell.png 1036w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6ffe24ed elementor-widget elementor-widget-text-editor\" data-id=\"6ffe24ed\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\n<h2 class=\"wp-block-heading\"><strong>How to change the RAID level of a Virtual Disk on a Dell PowerEdge Server<\/strong><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>An online virtual disk can be reconfigured in ways that expand its capacity and or changes its RAID level.<\/strong><\/p><\/blockquote>\n\n\n\n<p><br><strong>Note:\u00a0<\/strong>The controller changes the write cache policy of all virtual disks undergoing an RLM\/OCE to Write-Through until the RLM\/OCE is complete.<strong>Note:\u00a0<\/strong>Spanned virtual disks such as RAID 50, and 60 cannot be reconfigured.Reconfiguring virtual disks typically impacts disk performance until the reconfiguration operation is complete.We recommend performing a backup before any RAID Reconfiguration.<\/p>\n\n\n\n<p><strong>Online Capacity Expansion\u00a0<\/strong>(OCE) can be done in two ways:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>If there is a single virtual disk in a disk group and free space is available. The virtual disk\u2019s capacity can be expanded within that free space.<\/li><li>If a virtual disk is created and it does not use the maximum size of the disk group, free space is available.<\/li><\/ul>\n\n\n\n<p>Free space can also be available when a disk group\u2019s physical disks are replaced with larger disks using the Replace Member feature. A virtual disk&#8217;s capacity can also be expanded by performing an OCE operation to add more physical disks.<\/p>\n\n\n\n<p><strong>RAID Level Migration<\/strong>&nbsp;(RLM) refers to changing a virtual disk\u2019s RAID level. Both RLM and OCE can be done simultaneously so that a virtual disk can simultaneously have its RAID level that is changed and its capacity increased. When an RLM\/OCE operation is complete, a reboot is not required. The source RAID level column indicates the virtual disk RAID level before the RLM\/OCE operation. The target RAID level column indicates the RAID level after the RLM\/OCE operation.<br><strong>Note:&nbsp;<\/strong>This feature is available since iDRAC9 generation if you have a supported PERC(9 and 10).<br>To extend a virtual disk, add similar disk in the backplane and then reconfigure the virtual disk.<\/p>\n\n\n\n<p>Reconfiguration can be done by following these steps:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>In the&nbsp;<strong>PERC BIOS menu<\/strong>&nbsp;(at startup), once the&nbsp;<strong>Virtual Disk&nbsp;<\/strong>is selected press&nbsp;<strong>F2<\/strong>, then&nbsp;<strong>Reconfigure<\/strong>.<\/li><li>In&nbsp;<strong>OMSA (Openmanage Server Administrator)<\/strong><strong>, System &gt; Storage &gt; PERC &gt; Virtual Disk<\/strong>&nbsp;&gt; select&nbsp;<strong>Reconfigure&nbsp;<\/strong>in the dropdown menu.<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">Possible RAID Level Migrations:<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><td><strong>Source RAID<\/strong><\/td><td><strong>Target RAID<\/strong><\/td><td><strong>Required Number of PDs(Beginning)<\/strong><\/td><td><strong>Number of PDs(End)<\/strong><\/td><td><strong>Capacity Expansion Possible<\/strong><\/td><td><strong>Description<\/strong><\/td><\/tr><\/thead><tbody><tr><td>RAID 0<\/td><td>RAID 0<\/td><td>1<\/td><td>2 or more<\/td><td>Yes<\/td><td>Increases capacity<\/td><\/tr><tr><td>RAID 0<\/td><td>RAID 1<\/td><td>1<\/td><td>2<\/td><td>No<\/td><td>Converts nonredundant virtual disk into a mirrored virtual disk by adding one disk<\/td><\/tr><tr><td>RAID 0<\/td><td>RAID 5<\/td><td>1 or more<\/td><td>3 or more<\/td><td>Yes<\/td><td>At least one drive needs to be added for distributed parity data.<\/td><\/tr><tr><td>RAID 0<\/td><td>RAID 6<\/td><td>1 or more<\/td><td>4 or more<\/td><td>Yes<\/td><td>At least two drives need to be added for dual distributed parity data.<\/td><\/tr><tr><td>RAID 1<\/td><td>RAID 0<\/td><td>2<\/td><td>2 or more<\/td><td>Yes<\/td><td>Removes redundancy while increasing capacity<\/td><\/tr><tr><td>RAID 1<\/td><td>RAID 5<\/td><td>2<\/td><td>3 or more<\/td><td>Yes<\/td><td>Maintains redundancy while doubling capacity<\/td><\/tr><tr><td>RAID 1<\/td><td>RAID 6<\/td><td>2<\/td><td>4 or more<\/td><td>Yes<\/td><td>Two drives are required to be added for distributed parity data.<\/td><\/tr><tr><td>RAID 5<\/td><td>RAID 0<\/td><td>3 or more<\/td><td>3 or more<\/td><td>Yes<\/td><td>Converts to a nonredundant virtual disk and reclaims disk space that is used for distributed parity data<\/td><\/tr><tr><td>RAID 5<\/td><td>RAID 5<\/td><td>3<\/td><td>4 or more<\/td><td>Yes<\/td><td>Increases capacity by adding disks<\/td><\/tr><tr><td>RAID 5<\/td><td>RAID 6<\/td><td>3 or more<\/td><td>4 or more<\/td><td>Yes<\/td><td>At least one drive needs to be added for dual distributed parity data.<\/td><\/tr><tr><td>RAID 6<\/td><td>RAID 0<\/td><td>4 or more<\/td><td>4 or more<\/td><td>Yes<\/td><td>Converting to a nonredundant virtual disk and reclaiming disk space that is used for distributed parity data.<\/td><\/tr><tr><td>RAID 6<\/td><td>RAID 5<\/td><td>4 or more<\/td><td>4 or more<\/td><td>Yes<\/td><td>Removing one set of parity data and reclaiming disk space that is used for it.<\/td><\/tr><tr><td>RAID 6<\/td><td>RAID 6<\/td><td>4<\/td><td>5 or more<\/td><td>Yes<\/td><td>Increases capacity by adding disks<\/td><\/tr><tr><td>RAID 10<\/td><td>RAID 10<\/td><td>Less than 32<\/td><td>32<\/td><td>Yes<\/td><td>Increases capacity by adding disks<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Note:&nbsp;<\/strong>If the controller already contains the maximum number of virtual disks, you cannot perform a RAID level migration or capacity expansion on any virtual disk.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time-approximately:<\/span> <span class=\"rt-time\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>How to change the RAID level of a Virtual Disk on a Dell PowerEdge Server An online virtual disk can be reconfigured in ways that expand its capacity and or changes its RAID level. Note:\u00a0The controller changes the write cache policy of all virtual disks undergoing an RLM\/OCE to Write-Through until the RLM\/OCE is complete.Note:\u00a0Spanned virtual disks such as RAID<\/p>\n<p><a class=\"more-link\" href=\"https:\/\/tekmart.co.za\/t-blog\/how-to-extend-a-virtual-disk-allowing-you-to-expand-the-raid-size\/\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19,16,28,33,12],"tags":[],"class_list":["post-365","post","type-post","status-publish","format-standard","hentry","category-data-centre-servers","category-how-tos-and-other-useful-tips-and-tricks","category-partner-content","category-partner-resources","category-tekmart-enterprise-hardware-tips"],"_links":{"self":[{"href":"https:\/\/tekmart.co.za\/t-blog\/wp-json\/wp\/v2\/posts\/365","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tekmart.co.za\/t-blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tekmart.co.za\/t-blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tekmart.co.za\/t-blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tekmart.co.za\/t-blog\/wp-json\/wp\/v2\/comments?post=365"}],"version-history":[{"count":3,"href":"https:\/\/tekmart.co.za\/t-blog\/wp-json\/wp\/v2\/posts\/365\/revisions"}],"predecessor-version":[{"id":369,"href":"https:\/\/tekmart.co.za\/t-blog\/wp-json\/wp\/v2\/posts\/365\/revisions\/369"}],"wp:attachment":[{"href":"https:\/\/tekmart.co.za\/t-blog\/wp-json\/wp\/v2\/media?parent=365"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tekmart.co.za\/t-blog\/wp-json\/wp\/v2\/categories?post=365"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tekmart.co.za\/t-blog\/wp-json\/wp\/v2\/tags?post=365"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}