{"id":13231,"date":"2012-08-09T09:00:00","date_gmt":"2012-08-09T08:00:00","guid":{"rendered":"https:\/\/aidanfinn.com\/?p=13231"},"modified":"2012-08-09T09:00:00","modified_gmt":"2012-08-09T08:00:00","slug":"ws2012-hyper-v-virtual-hard-disk-vhd-block-fragmentation","status":"publish","type":"post","link":"https:\/\/aidanfinn.com\/?p=13231","title":{"rendered":"WS2012 Hyper-V \u2013 Virtual Hard Disk (VHD) Block Fragmentation"},"content":{"rendered":"

The <\/em>Performance Tuning Guidelines for Windows Server 2012<\/em><\/a> document is available and I\u2019m reviewing and commenting on notable text in it.<\/em><\/p>\n

This is a small but important note in the document:<\/p>\n

\n

Just as the allocations on a physical disk can be fragmented, the allocation of the blocks on a virtual disk can be fragmented when two virtually adjacent blocks are not allocated together on a virtual disk file.<\/p>\n

The fragmentation percentage is reported for disks. If a performance issue noticed on a virtual disk, you should check the fragmentation percentage. When applicable, defragment the virtual disk by creating a new virtual disk with the data from the fragmented disk by using the Create from Source<\/b> option.<\/p>\n<\/blockquote>\n

Hmm, I\u2019ve MSFT for more information on this one; I would have thought that we could defrag the LUN that the fragmented VHD was on, rather than create a whole new VHD.  I\u2019ll update this if I get an answer.<\/p>\n

Technorati Tags: Windows Server 2012<\/a>,Hyper-V<\/a>,Virtualisation<\/a>,Performance<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"

The Performance Tuning Guidelines for Windows Server 2012 document is available and I\u2019m reviewing and commenting on notable text in it. This is a small but important note in the document: Just as the allocations on a physical disk can be fragmented, the allocation of the blocks on a virtual disk can be fragmented when … Continue reading “WS2012 Hyper-V \u2013 Virtual Hard Disk (VHD) Block Fragmentation”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[20],"tags":[181,86,195,118],"class_list":["post-13231","post","type-post","status-publish","format-standard","hentry","category-hyper-v","tag-hyper-v","tag-performance","tag-virtualisation","tag-windows-server-2012"],"aioseo_notices":[],"jetpack_featured_media_url":"","amp_enabled":true,"_links":{"self":[{"href":"https:\/\/aidanfinn.com\/index.php?rest_route=\/wp\/v2\/posts\/13231","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aidanfinn.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aidanfinn.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aidanfinn.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aidanfinn.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13231"}],"version-history":[{"count":0,"href":"https:\/\/aidanfinn.com\/index.php?rest_route=\/wp\/v2\/posts\/13231\/revisions"}],"wp:attachment":[{"href":"https:\/\/aidanfinn.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13231"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aidanfinn.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13231"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aidanfinn.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13231"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}