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    <title>topic Re: SAP HANA - vMotion bottleneck in vSphere Hypervisor Discussions</title>
    <link>https://communities.vmware.com/t5/vSphere-Hypervisor-Discussions/SAP-HANA-vMotion-bottleneck/m-p/2975983#M7581</link>
    <description>&lt;P&gt;Great topic!&amp;nbsp;&lt;img class="lia-deferred-image lia-image-emoji" src="https://communities.vmware.com/html/@9096AC4BBA0718E6B18FDB51D30A5493/emoticons/1f44d.png" alt=":thumbs_up:" title=":thumbs_up:" /&gt;&lt;/P&gt;&lt;P&gt;And do not forget the best practices for vmotion and networking!&lt;BR /&gt;Often the simple things and basics are forgotten to consider.&amp;nbsp;&lt;img class="lia-deferred-image lia-image-emoji" src="https://communities.vmware.com/html/@90D223CDF4C4491D7DFF693BB5C76865/emoticons/1f609.png" alt=":winking_face:" title=":winking_face:" /&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;A href="https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vcenterhost.doc/GUID-7DAD15D4-7F41-4913-9F16-567289E22977.html" target="_blank" rel="noopener"&gt;https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vcenterhost.doc/GUID-7DAD15D4-7F41-4913-9F16-567289E22977.html&lt;/A&gt;&lt;BR /&gt;&lt;BR /&gt;I do not have experience yet with SAP HANA &amp;amp; VMware. But in the future I will.&lt;BR /&gt;My resources until now were:&lt;BR /&gt;&lt;A href="https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/whitepaper/sap_hana_on_vmware_vsphere_best_practices_guide-white-paper.pdf" target="_blank" rel="noopener"&gt;https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/whitepaper/sap_hana_on_vmware_vsphere_best_practices_guide-white-paper.pdf&lt;/A&gt;&lt;BR /&gt;&lt;A href="https://core.vmware.com/resource/sap-hana-vmware-vsphere-best-practices-and-reference-architecture-guide" target="_blank" rel="noopener"&gt;https://core.vmware.com/resource/sap-hana-vmware-vsphere-best-practices-and-reference-architecture-guide&lt;/A&gt;&lt;BR /&gt;&lt;A href="https://wiki.scn.sap.com/wiki/display/VIRTUALIZATION/SAP+on+VMware+vSphere" target="_blank" rel="noopener"&gt;https://wiki.scn.sap.com/wiki/display/VIRTUALIZATION/SAP+on+VMware+vSphere&lt;/A&gt;&lt;BR /&gt;&lt;BR /&gt;And another blog:&lt;BR /&gt;&lt;A href="https://www.stephenwagner.com/2022/06/19/optimizing-vmware-vmotion/" target="_blank"&gt;https://www.stephenwagner.com/2022/06/19/optimizing-vmware-vmotion/&lt;/A&gt;&lt;BR /&gt;&lt;BR /&gt;Greetings&lt;/P&gt;</description>
    <pubDate>Thu, 06 Jul 2023 10:12:52 GMT</pubDate>
    <dc:creator>WuGeDe</dc:creator>
    <dc:date>2023-07-06T10:12:52Z</dc:date>
    <item>
      <title>SAP HANA - vMotion bottleneck</title>
      <link>https://communities.vmware.com/t5/vSphere-Hypervisor-Discussions/SAP-HANA-vMotion-bottleneck/m-p/2975900#M7575</link>
      <description>&lt;DIV&gt;&lt;DIV class=""&gt;&lt;DIV class=""&gt;&lt;SPAN&gt;Hi,&lt;/SPAN&gt;&lt;/DIV&gt;&lt;DIV class=""&gt;&amp;nbsp;&lt;/DIV&gt;&lt;/DIV&gt;&lt;DIV class=""&gt;&lt;DIV class=""&gt;&lt;SPAN&gt;we're planning a refresh of our existing vSphere SAP HANA cluster. VMs have up to 2 TB RAM and currently vMotion between hosts with 2 x 10G is not really possible, VMs sometimes freeze etc. and it just takes ages. I've to retest with vSphere 7.0.3 but anyway...&lt;/SPAN&gt;&lt;/DIV&gt;&lt;/DIV&gt;&lt;DIV class=""&gt;&lt;DIV class=""&gt;&lt;SPAN&gt;As we have to replace hosts we think about 100G, our current standard in DC is 25G but I hope that 100G will speed up vMotion for those large VMs even more.&lt;/SPAN&gt;&lt;/DIV&gt;&lt;DIV class=""&gt;&amp;nbsp;&lt;/DIV&gt;&lt;/DIV&gt;&lt;DIV class=""&gt;&lt;DIV class=""&gt;&lt;SPAN&gt;Any real life experience how big the benefit for vMotion of HANAs is? Is it linear of will it slow down at xx GB? 100G will need new network equipment not only for access switches, network team told me that bandwidth of spine/leaf switch also needs to be boosted. So there are some €€ involved.&lt;/SPAN&gt;&lt;/DIV&gt;&lt;DIV class=""&gt;&amp;nbsp;&lt;/DIV&gt;&lt;/DIV&gt;&lt;DIV class=""&gt;&lt;DIV class=""&gt;&lt;SPAN&gt;Information found here looks promising.&lt;/SPAN&gt;&lt;/DIV&gt;&lt;DIV class=""&gt;&amp;nbsp;&lt;/DIV&gt;&lt;/DIV&gt;&lt;DIV class=""&gt;&lt;DIV class=""&gt;&lt;SPAN&gt;&lt;A class="" href="https://www.vladan.fr/vmotion-performance-optimizaton-vmware-vsphere-7/" target="_blank" rel="noopener"&gt;vMotion Performance Optimizaton VMware vSphere 7 U3 - ESX Virtualization (vladan.fr)&lt;/A&gt;&lt;/SPAN&gt;&lt;/DIV&gt;&lt;/DIV&gt;&lt;DIV class=""&gt;&lt;DIV class=""&gt;&lt;SPAN&gt;&lt;A class="" href="https://blogs.vmware.com/vsphere/2019/09/how-to-tune-vmotion-for-lower-migration-times.html" target="_blank" rel="noopener"&gt;How to Tune vMotion for Lower Migration Times? - VMware vSphere Blog&lt;/A&gt;&lt;/SPAN&gt;&lt;/DIV&gt;&lt;DIV class=""&gt;&amp;nbsp;&lt;/DIV&gt;&lt;/DIV&gt;&lt;DIV class=""&gt;&lt;DIV class=""&gt;&lt;SPAN&gt;Thanks&lt;/SPAN&gt;&lt;/DIV&gt;&lt;/DIV&gt;&lt;DIV class=""&gt;&lt;DIV class=""&gt;&amp;nbsp;&lt;/DIV&gt;&lt;/DIV&gt;&lt;/DIV&gt;</description>
      <pubDate>Wed, 05 Jul 2023 15:04:28 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/vSphere-Hypervisor-Discussions/SAP-HANA-vMotion-bottleneck/m-p/2975900#M7575</guid>
      <dc:creator>pirx2020</dc:creator>
      <dc:date>2023-07-05T15:04:28Z</dc:date>
    </item>
    <item>
      <title>Re: SAP HANA - vMotion bottleneck</title>
      <link>https://communities.vmware.com/t5/vSphere-Hypervisor-Discussions/SAP-HANA-vMotion-bottleneck/m-p/2975983#M7581</link>
      <description>&lt;P&gt;Great topic!&amp;nbsp;&lt;img class="lia-deferred-image lia-image-emoji" src="https://communities.vmware.com/html/@9096AC4BBA0718E6B18FDB51D30A5493/emoticons/1f44d.png" alt=":thumbs_up:" title=":thumbs_up:" /&gt;&lt;/P&gt;&lt;P&gt;And do not forget the best practices for vmotion and networking!&lt;BR /&gt;Often the simple things and basics are forgotten to consider.&amp;nbsp;&lt;img class="lia-deferred-image lia-image-emoji" src="https://communities.vmware.com/html/@90D223CDF4C4491D7DFF693BB5C76865/emoticons/1f609.png" alt=":winking_face:" title=":winking_face:" /&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;A href="https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vcenterhost.doc/GUID-7DAD15D4-7F41-4913-9F16-567289E22977.html" target="_blank" rel="noopener"&gt;https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vcenterhost.doc/GUID-7DAD15D4-7F41-4913-9F16-567289E22977.html&lt;/A&gt;&lt;BR /&gt;&lt;BR /&gt;I do not have experience yet with SAP HANA &amp;amp; VMware. But in the future I will.&lt;BR /&gt;My resources until now were:&lt;BR /&gt;&lt;A href="https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/whitepaper/sap_hana_on_vmware_vsphere_best_practices_guide-white-paper.pdf" target="_blank" rel="noopener"&gt;https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/whitepaper/sap_hana_on_vmware_vsphere_best_practices_guide-white-paper.pdf&lt;/A&gt;&lt;BR /&gt;&lt;A href="https://core.vmware.com/resource/sap-hana-vmware-vsphere-best-practices-and-reference-architecture-guide" target="_blank" rel="noopener"&gt;https://core.vmware.com/resource/sap-hana-vmware-vsphere-best-practices-and-reference-architecture-guide&lt;/A&gt;&lt;BR /&gt;&lt;A href="https://wiki.scn.sap.com/wiki/display/VIRTUALIZATION/SAP+on+VMware+vSphere" target="_blank" rel="noopener"&gt;https://wiki.scn.sap.com/wiki/display/VIRTUALIZATION/SAP+on+VMware+vSphere&lt;/A&gt;&lt;BR /&gt;&lt;BR /&gt;And another blog:&lt;BR /&gt;&lt;A href="https://www.stephenwagner.com/2022/06/19/optimizing-vmware-vmotion/" target="_blank"&gt;https://www.stephenwagner.com/2022/06/19/optimizing-vmware-vmotion/&lt;/A&gt;&lt;BR /&gt;&lt;BR /&gt;Greetings&lt;/P&gt;</description>
      <pubDate>Thu, 06 Jul 2023 10:12:52 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/vSphere-Hypervisor-Discussions/SAP-HANA-vMotion-bottleneck/m-p/2975983#M7581</guid>
      <dc:creator>WuGeDe</dc:creator>
      <dc:date>2023-07-06T10:12:52Z</dc:date>
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