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    <title>topic Re: Exchange 2010 DAG cluster failover when SMVI snapshot is taken in ESXi Discussions</title>
    <link>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190213#M96404</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Hello,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;The application is not supporting taking snapshot and remving that.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;But try esx 5.1 build 1483097 there is improvement in the snapshot.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;A href="http://technet.microsoft.com/en-us/library/jj126252(v=exchg.141).aspx" title="http://technet.microsoft.com/en-us/library/jj126252(v=exchg.141).aspx"&gt;Understanding Exchange 2010 Virtualization: Exchange 2010 Help&lt;/A&gt;&lt;/P&gt;&lt;P&gt;Some hypervisors include features for taking snapshots of virtual machines. Virtual machine snapshots capture the state of a virtual machine while it's running. This feature enables you to take multiple snapshots of a virtual machine and then revert the virtual machine to any of the previous states by applying a snapshot to the virtual machine. However, virtual machine snapshots aren't application aware, and using them can have unintended and unexpected consequences for a server application that maintains state data, such as Exchange. As a result, making virtual machine snapshots of an Exchange guest virtual machine isn't supported.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Best regards,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Yoni Shperling&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Mon, 05 May 2014 06:49:54 GMT</pubDate>
    <dc:creator>yonish</dc:creator>
    <dc:date>2014-05-05T06:49:54Z</dc:date>
    <item>
      <title>Exchange 2010 DAG cluster failover when SMVI snapshot is taken</title>
      <link>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190207#M96398</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Hi Everyone,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;We have set up a DAG cluster with 3 nodes. Each time the daily SMVI snapshot is taken, the DAG cluster fail over the datastore to our backup store. Anyone else having this problem ? Any ideas what we can do ?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Thanks a lot for any input&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Thomas&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Tue, 17 Aug 2010 11:42:08 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190207#M96398</guid>
      <dc:creator>ThomasNederman</dc:creator>
      <dc:date>2010-08-17T11:42:08Z</dc:date>
    </item>
    <item>
      <title>Re: Exchange 2010 DAG cluster failover when SMVI snapshot is taken</title>
      <link>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190208#M96399</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt; Hi,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Yes, we are having the same problem. What we are thinking about doing is having 2 volumes with different SMVI backup times, and we hope that this will make the DAG cluster not to stop working. We only have the problem once every 2/3 weeks though.. Not every SMVI backup&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;best regards,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Thomas&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Thu, 23 Dec 2010 08:41:33 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190208#M96399</guid>
      <dc:creator>ThomasNederman</dc:creator>
      <dc:date>2010-12-23T08:41:33Z</dc:date>
    </item>
    <item>
      <title>Re: Exchange 2010 DAG cluster failover when SMVI snapshot is taken</title>
      <link>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190209#M96400</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Out Netapp support say there is a new version of SMVI out, we will try and install it and see if that helps.. Our SMVI is not always removing the VM snapshots after the backup aswell...&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;(I can now see it was me creating this thread...Had forgotten about it)&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Thu, 23 Dec 2010 08:43:15 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190209#M96400</guid>
      <dc:creator>ThomasNederman</dc:creator>
      <dc:date>2010-12-23T08:43:15Z</dc:date>
    </item>
    <item>
      <title>Re: Exchange 2010 DAG cluster failover when SMVI snapshot is taken</title>
      <link>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190210#M96401</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Hi Thomas,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;i am having a similar problem with my environment 3 DAG nodes and SMVI backups failover the DAG nodes.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;can i asked you how did you fix this please.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Many thanks&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Kiran&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 23 Sep 2011 16:27:57 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190210#M96401</guid>
      <dc:creator>kmadikiri5</dc:creator>
      <dc:date>2011-09-23T16:27:57Z</dc:date>
    </item>
    <item>
      <title>Re: Exchange 2010 DAG cluster failover when SMVI snapshot is taken</title>
      <link>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190211#M96402</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Does it fail when taking the snapshot or removing the snapshot?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P class="MsoNormal"&gt;Check out&amp;nbsp; &lt;A href="http://support.microsoft.com/kb/836566"&gt;http://support.microsoft.com/kb/836566&lt;/A&gt;, this KB deals with setting some Exchange 2003 cluster timeouts, may still apply to 2010.&amp;nbsp; In SQL clusters I've had to make changes to (cluster wide)&amp;nbsp; LooksAlivePollInterval and IsAlivePollInterval in some of my environments.&amp;nbsp; Helps with storage array failovers, removing &amp;amp; consolidating a snapshot can stun the VM for long periods of time.&amp;nbsp; 4.1 and 5.0 are much better but 4.1 will still stun for many seconds.&lt;/P&gt;&lt;P class="MsoNormal"&gt;&lt;/P&gt;&lt;P class="MsoNormal"&gt;Ben&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 23 Sep 2011 20:13:01 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190211#M96402</guid>
      <dc:creator>BenConrad</dc:creator>
      <dc:date>2011-09-23T20:13:01Z</dc:date>
    </item>
    <item>
      <title>Re: Exchange 2010 DAG cluster failover when SMVI snapshot is taken</title>
      <link>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190212#M96403</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;i tried that option Ben, but dint help!&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;cheers&lt;/P&gt;&lt;P&gt;kiran&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Sat, 24 Sep 2011 00:04:36 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190212#M96403</guid>
      <dc:creator>kmadikiri5</dc:creator>
      <dc:date>2011-09-24T00:04:36Z</dc:date>
    </item>
    <item>
      <title>Re: Exchange 2010 DAG cluster failover when SMVI snapshot is taken</title>
      <link>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190213#M96404</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Hello,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;The application is not supporting taking snapshot and remving that.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;But try esx 5.1 build 1483097 there is improvement in the snapshot.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;A href="http://technet.microsoft.com/en-us/library/jj126252(v=exchg.141).aspx" title="http://technet.microsoft.com/en-us/library/jj126252(v=exchg.141).aspx"&gt;Understanding Exchange 2010 Virtualization: Exchange 2010 Help&lt;/A&gt;&lt;/P&gt;&lt;P&gt;Some hypervisors include features for taking snapshots of virtual machines. Virtual machine snapshots capture the state of a virtual machine while it's running. This feature enables you to take multiple snapshots of a virtual machine and then revert the virtual machine to any of the previous states by applying a snapshot to the virtual machine. However, virtual machine snapshots aren't application aware, and using them can have unintended and unexpected consequences for a server application that maintains state data, such as Exchange. As a result, making virtual machine snapshots of an Exchange guest virtual machine isn't supported.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Best regards,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Yoni Shperling&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Mon, 05 May 2014 06:49:54 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/ESXi-Discussions/Exchange-2010-DAG-cluster-failover-when-SMVI-snapshot-is-taken/m-p/1190213#M96404</guid>
      <dc:creator>yonish</dc:creator>
      <dc:date>2014-05-05T06:49:54Z</dc:date>
    </item>
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