{"id":9655,"date":"2020-08-11T19:09:23","date_gmt":"2020-08-11T09:09:23","guid":{"rendered":"https:\/\/nsrd.info\/blog\/?p=9655"},"modified":"2020-08-11T19:09:26","modified_gmt":"2020-08-11T09:09:26","slug":"avamar-basics-vmware-changed-block-tracking-recoveries","status":"publish","type":"post","link":"https:\/\/nsrd.info\/blog\/2020\/08\/11\/avamar-basics-vmware-changed-block-tracking-recoveries\/","title":{"rendered":"Avamar Basics \u2013\u00a0VMware Changed Block Tracking Recoveries"},"content":{"rendered":"\n<p>One of the most useful recoveries you can do in Avamar, NetWorker or PowerProtect Data Manager is the <em>changed block tracking<\/em> recovery.<\/p>\n\n\n\n<p>Within VMware, a changed block tracking (CBT) recovery is what you do when a virtual machine has been damaged or corrupted. Either there&#8217;s no option to fix it, or the time it would take to somehow dive into the operating system and repair the damage is too much. <em>You.Just.Need.It.Back.<\/em><\/p>\n\n\n\n<p>If you&#8217;re recovering a virtual machine to an entirely new VM, you&#8217;re going to have to read the entire VM from storage. So a 1TB virtual machine requires 1TB of data being read from your protection storage.<\/p>\n\n\n\n<p>On the other hand, a CBT recovery compares the differences between the VM&#8217;s blocks on disk now, and what&#8217;s stored in the backup you&#8217;ve selected. The blocks that are the same between the copy on disk and the protection storage copy aren&#8217;t recovered. Why waste time? Instead, we only need to recover data for blocks that have changed since the backup.<\/p>\n\n\n\n<p>So if you&#8217;ve got a 1TB virtual machine that had some patching done on it and it now won&#8217;t boot, or someone has done a <em>ahem<\/em> boo-boo within the VM, it could be that there&#8217;s only <em>hundreds of megabytes<\/em> that have changed since the backup. That can be a huge difference in the time it takes to complete.<\/p>\n\n\n\n<p>In the video below, I&#8217;ll take you through the CBT recovery process.<\/p>\n\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"epyt-video-wrapper\"><iframe loading=\"lazy\"  id=\"_ytid_97710\"  width=\"688\" height=\"387\"  data-origwidth=\"688\" data-origheight=\"387\"  data-relstop=\"1\" src=\"https:\/\/www.youtube.com\/embed\/XeiVwHRGAWY?enablejsapi=1&#038;autoplay=0&#038;cc_load_policy=0&#038;cc_lang_pref=&#038;iv_load_policy=1&#038;loop=0&#038;rel=0&#038;fs=1&#038;playsinline=0&#038;autohide=2&#038;theme=dark&#038;color=red&#038;controls=1&#038;\" class=\"__youtube_prefs__  epyt-is-override  no-lazyload\" title=\"YouTube player\"  allow=\"fullscreen; accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen data-no-lazy=\"1\" data-skipgform_ajax_framebjll=\"\"><\/iframe><\/div>\n<\/div><figcaption><strong><a href=\"https:\/\/youtu.be\/XeiVwHRGAWY\" target=\"_blank\" rel=\"noreferrer noopener\">VMware Changed Block Tracking recovery in Avamar<\/a><\/strong><\/figcaption><\/figure>\n\n\n\n<p>You can click the caption above to go through to the YouTube video directly, if you&#8217;d like.<\/p>\n\n\n\n<p>Hey, before you go \u2013&nbsp;don&#8217;t forget that the second edition of <strong>Data Protection: Ensuring Data Availability<\/strong> has been released. <em><a href=\"https:\/\/www.routledge.com\/Data-Protection-Ensuring-Data-Availability\/Guise\/p\/book\/9780367256777\" target=\"_blank\" rel=\"noreferrer noopener\">Here&#8217;s a link to the publisher site<\/a><\/em>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>One of the most useful recoveries you can do in Avamar, NetWorker or PowerProtect Data Manager is the changed block&hellip;<\/p>\n","protected":false},"author":1,"featured_media":5632,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1154,6,19],"tags":[134,1265,1267,1488,1263,1566,1252,1087],"class_list":["post-9655","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-avamar-2","category-basics","category-recovery","tag-avamar","tag-cbt","tag-changed-block-tracking","tag-image-backup","tag-image-level-backup","tag-image-recovery","tag-recovery","tag-vmware"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/nsrd.info\/blog\/wp-content\/uploads\/2015\/07\/bigStock-Recovery.jpg","jetpack_shortlink":"https:\/\/wp.me\/pKpIN-2vJ","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/nsrd.info\/blog\/wp-json\/wp\/v2\/posts\/9655","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nsrd.info\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nsrd.info\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nsrd.info\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nsrd.info\/blog\/wp-json\/wp\/v2\/comments?post=9655"}],"version-history":[{"count":2,"href":"https:\/\/nsrd.info\/blog\/wp-json\/wp\/v2\/posts\/9655\/revisions"}],"predecessor-version":[{"id":9658,"href":"https:\/\/nsrd.info\/blog\/wp-json\/wp\/v2\/posts\/9655\/revisions\/9658"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nsrd.info\/blog\/wp-json\/wp\/v2\/media\/5632"}],"wp:attachment":[{"href":"https:\/\/nsrd.info\/blog\/wp-json\/wp\/v2\/media?parent=9655"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nsrd.info\/blog\/wp-json\/wp\/v2\/categories?post=9655"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nsrd.info\/blog\/wp-json\/wp\/v2\/tags?post=9655"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}