{"id":6196,"date":"2016-09-05T11:29:16","date_gmt":"2016-09-05T03:29:16","guid":{"rendered":"http:\/\/rmohan.com\/?p=6196"},"modified":"2016-09-05T11:29:23","modified_gmt":"2016-09-05T03:29:23","slug":"hyper-v-2012-r2","status":"publish","type":"post","link":"https:\/\/mohan.sg\/?p=6196","title":{"rendered":"HYPER-V 2012 R2"},"content":{"rendered":"
\n

HYPER-V 2012\u00a0R2<\/h1>\n<\/header>\n
\n

With the release of Windows 2012R2\u00a0and with it Hyper-V 2012R2\u00a0many of you are probably\u00a0wondering how to migrate\u00a0your existing environments\u00a0to 2012R2.
\nFor the first\u00a0time Microsoft\u00a0has issued that migration\u00a0(from 2012) can be achieved with zero downtime. Now while this is possible there are certain requirements to be able to achieve this.
\nThere are basically three ways in wich you can migrate to Hyper-V 2012R2 so I\u2019ll outline them for you.<\/p>\n

The first is and easiest way is you can live migrate the VM\u2019s to the new server. However live migration is only possible between\u00a0VM\u2019s using shared Storage. Now you can\u2019t add a windows 2012R2\u00a0server to a 2012 cluster so the only way you can achieve this is if you\u2019re using SMB share as your storage.<\/p>\n

Pros:<\/p>\n

    \n
  • Extremely fast migration<\/li>\n
  • No downtime<\/li>\n<\/ul>\n

    Cons:<\/p>\n

      \n
    • requires\u00a0you to be using SMB storage<\/li>\n<\/ul>\n

      The second option is to perform\u00a0a shared nothing live migration. In this scenario all VM\u2019s are basically replicated the new server and after replication they are \u201clive migrated\u201d in the background.<\/p>\n

      Pros:<\/p>\n

        \n
      • No downtime<\/li>\n<\/ul>\n

        Cons:<\/p>\n

          \n
        • Time consuming as all VM\u2019s have to be replicated to new server.<\/li>\n
        • If using Block Level Replication, requires a new Lun\u00a0for the new server, existing\u00a0Lun can\u2019t be connected concurrently to new and old servers running different version of hyper-v.<\/li>\n
        • If using block level shared storage (Iscsi, Fiber) each VM is temporarily going to require double the space during initial replication.<\/li>\n<\/ul>\n

          The third and final option is to perform\u00a0a cluster migration. This option is of course only valid if you have a cluster and are moving to a new cluster.
          \nYou basically\u00a0perform a copy cluster role operation using Windows failover clustering and run the wizard.<\/p>\n

          Pros:<\/p>\n

            \n
          • All Cluster resources and settings are transferred to new cluster.<\/li>\n
          • Does not require additional Luns, or space provisioning<\/li>\n<\/ul>\n

            Cons:<\/p>\n

              \n
            • Requires downtime\u00a0of the VM\u2019s while transferring\u00a0the Lun to the new server.<\/li>\n<\/ul>\n

              These are the three options for migrating VM\u2019s to a new server. There is also a fourth option where you could just manually copy (or export) all VM\u2019s to the new server and then import them via Hyper-V manager, but that isn\u2019t really a migration.<\/p>\n

              Hope this helps you understand the basics of how to migrate your VM\u2019s to Windows Hyper-V\u00a02012R2\u00a0and again we see the benefits of using SMB shares as Hyper-V storage.
              \nHappy Migrating.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

              HYPER-V 2012 R2 <\/p>\n

              With the release of Windows 2012R2 and with it Hyper-V 2012R2 many of you are probably wondering how to migrate your existing environments to 2012R2. For the first time Microsoft has issued that migration (from 2012) can be achieved with zero downtime. Now while this is possible there are certain requirements […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48],"tags":[],"_links":{"self":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/6196"}],"collection":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6196"}],"version-history":[{"count":1,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/6196\/revisions"}],"predecessor-version":[{"id":6197,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/6196\/revisions\/6197"}],"wp:attachment":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6196"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6196"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6196"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}