It is possible to migrate a VM from 6 to 7 it is recommended however that you don't do a live migration and that you power off the VM and then turn it back on on the cluster running version 7

"Groten, Ryan" <Ryan.Groten@stantec.com> wrote:





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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Century Gothic&quot;,&quot;sans-serif&quot;">Has anyone succeeded in upgrading their hosts OS version from 6 to 7?&nbsp; I assumed it could be done without downtime and one host at a time, but when trying it out I
 found that RHEL7 hosts can&#8217;t be placed in the same Cluster as RHEL6 ones.&nbsp; 
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Century Gothic&quot;,&quot;sans-serif&quot;">I then tried making a new Cluster and migrating VMs from the RHEL6 cluster to RHEL7.&nbsp; Initial testing seems to show that it works from RHEL6 to RHEL7 but not the other
 way around.&nbsp; Also when I select this option a warning pops up saying &#8220;Choosing different cluster may lead to unexpected results.&nbsp; Please consult documentation.&#8221;</span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Century Gothic&quot;,&quot;sans-serif&quot;">I looked in the Admin Guide and Technical Reference Guide but don&#8217;t see where these unexpected results are mentioned.</span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Century Gothic&quot;,&quot;sans-serif&quot;">Thanks,</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Century Gothic&quot;,&quot;sans-serif&quot;">Ryan Groten</span><span style="font-size:10.0pt;font-family:&quot;Century Gothic&quot;,&quot;sans-serif&quot;"></span></p>
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