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    <title>topic Does 'disable ATS' affect storage performance? in VMware vSphere™ Discussions</title>
    <link>https://communities.vmware.com/t5/VMware-vSphere-Discussions/Does-disable-ATS-affect-storage-performance/m-p/1833964#M19406</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;I recently had a problem with ESXi, forcing the server to reboot. &lt;/P&gt;&lt;P&gt;I received an answer after VMware SR.&lt;/P&gt;&lt;P&gt;They said storage was under load and that the storage was lock , and so HA is not operated&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;They said answer is disable ATS.&lt;/P&gt;&lt;P&gt;However, I know that ATS Disable affects storage performance from blog&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;What is the difference between disable ATS and disable ATS Heartbeat?&lt;/P&gt;&lt;P&gt;What happens when only Disable ATS Heartbeat ?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Storage is EQ6210 (iSCSI).&lt;/P&gt;&lt;P&gt;I don't know if this storage supports ATS or not&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Wed, 06 Mar 2019 06:39:51 GMT</pubDate>
    <dc:creator>scottpsy</dc:creator>
    <dc:date>2019-03-06T06:39:51Z</dc:date>
    <item>
      <title>Does 'disable ATS' affect storage performance?</title>
      <link>https://communities.vmware.com/t5/VMware-vSphere-Discussions/Does-disable-ATS-affect-storage-performance/m-p/1833964#M19406</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;I recently had a problem with ESXi, forcing the server to reboot. &lt;/P&gt;&lt;P&gt;I received an answer after VMware SR.&lt;/P&gt;&lt;P&gt;They said storage was under load and that the storage was lock , and so HA is not operated&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;They said answer is disable ATS.&lt;/P&gt;&lt;P&gt;However, I know that ATS Disable affects storage performance from blog&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;What is the difference between disable ATS and disable ATS Heartbeat?&lt;/P&gt;&lt;P&gt;What happens when only Disable ATS Heartbeat ?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Storage is EQ6210 (iSCSI).&lt;/P&gt;&lt;P&gt;I don't know if this storage supports ATS or not&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Wed, 06 Mar 2019 06:39:51 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/VMware-vSphere-Discussions/Does-disable-ATS-affect-storage-performance/m-p/1833964#M19406</guid>
      <dc:creator>scottpsy</dc:creator>
      <dc:date>2019-03-06T06:39:51Z</dc:date>
    </item>
    <item>
      <title>Re: Does 'disable ATS' affect storage performance?</title>
      <link>https://communities.vmware.com/t5/VMware-vSphere-Discussions/Does-disable-ATS-affect-storage-performance/m-p/1833965#M19407</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Hi,&lt;/P&gt;&lt;P&gt;You can show more information about your LUNs with this command line from an ESXi. if ATS is supported or not&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;# esxcli storage vmfs lockmode list&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Please, look at this documentation as well : &lt;A href="https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.storage.doc/GUID-DE30AAE3-72ED-43BF-95B3-A2B885A713DB.html" title="https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.storage.doc/GUID-DE30AAE3-72ED-43BF-95B3-A2B885A713DB.html"&gt;VMFS Locking Mechanisms&lt;/A&gt; &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Thank you,&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Wed, 06 Mar 2019 13:44:58 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/VMware-vSphere-Discussions/Does-disable-ATS-affect-storage-performance/m-p/1833965#M19407</guid>
      <dc:creator>Marmotte94</dc:creator>
      <dc:date>2019-03-06T13:44:58Z</dc:date>
    </item>
    <item>
      <title>Re: Does 'disable ATS' affect storage performance?</title>
      <link>https://communities.vmware.com/t5/VMware-vSphere-Discussions/Does-disable-ATS-affect-storage-performance/m-p/1833966#M19408</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;The EqualLogic support ATS Locking..&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;PRE&gt;[root@esx-node-97:~] esxcli storage vmfs lockmode list&lt;P&gt;Volume Name&amp;nbsp; UUID&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Type&amp;nbsp;&amp;nbsp;&amp;nbsp; Locking Mode&amp;nbsp; ATS Compatible&amp;nbsp; ATS Upgrade Modes&amp;nbsp; ATS Incompatibility Reason&lt;/P&gt;&lt;P&gt;-----------&amp;nbsp; -----------------------------------&amp;nbsp; ------&amp;nbsp; ------------&amp;nbsp; --------------&amp;nbsp; -----------------&amp;nbsp; --------------------------&lt;/P&gt;&lt;P&gt;grp-01-001&amp;nbsp;&amp;nbsp; 50018f37-09ffc5fc-dd29-d4ae528ea003&amp;nbsp; VMFS-5&amp;nbsp; ATS&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; true&amp;nbsp; No upgrade needed&lt;/P&gt;&lt;P&gt;grp-01-002&amp;nbsp;&amp;nbsp; 500fe112-41f63236-46aa-d4ae528e8772&amp;nbsp; VMFS-5&amp;nbsp; ATS&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; true&amp;nbsp; No upgrade needed&lt;/P&gt;&lt;P&gt;grp-01-007&amp;nbsp;&amp;nbsp; 52cbe217-a0892105-f3b4-e0db5515edee&amp;nbsp; VMFS-5&amp;nbsp; ATS&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; true&amp;nbsp; No upgrade needed&lt;/P&gt;&lt;/PRE&gt;&lt;P&gt;Its also on the HCL &lt;A href="https://www.vmware.com/resources/compatibility/detail.php?deviceCategory=san&amp;amp;productid=35780&amp;amp;releases_filter=427,369,408,367,338,276,275,274,273,272,271,172,243&amp;amp;deviceCategory=san&amp;amp;details=1&amp;amp;keyword=6210&amp;amp;isSVA=0&amp;amp;page=1&amp;amp;display_interval=10&amp;amp;sortColumn=Partner&amp;amp;sortOrder=Asc" title="https://www.vmware.com/resources/compatibility/detail.php?deviceCategory=san&amp;amp;productid=35780&amp;amp;releases_filter=427,369,408,367,338,276,275,274,273,272,271,172,243&amp;amp;deviceCategory=san&amp;amp;details=1&amp;amp;keyword=6210&amp;amp;isSVA=0&amp;amp;page=1&amp;amp;display_interval=10&amp;amp;sortColumn=Partner&amp;amp;sortOrder=Asc"&gt;VMware Compatibility Guide - Storage/SAN Search&lt;/A&gt;&amp;nbsp; if you expand your FW level and take a look to VAAI.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Regards&lt;/P&gt;&lt;P&gt;Joerg&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Wed, 06 Mar 2019 13:55:28 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/VMware-vSphere-Discussions/Does-disable-ATS-affect-storage-performance/m-p/1833966#M19408</guid>
      <dc:creator>IRIX201110141</dc:creator>
      <dc:date>2019-03-06T13:55:28Z</dc:date>
    </item>
    <item>
      <title>Re: Does 'disable ATS' affect storage performance?</title>
      <link>https://communities.vmware.com/t5/VMware-vSphere-Discussions/Does-disable-ATS-affect-storage-performance/m-p/1833967#M19409</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Hi,&lt;/P&gt;&lt;P&gt;ATS is better than ATS+iscsi&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;You can verify VAAI support with this command :&lt;/P&gt;&lt;P&gt;# esxcli storage core device vaai status get&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;And which plugin is used with this one&lt;/P&gt;&lt;P&gt;# esxcli storage nmp device list&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Be careful if you are in production environment and you would like to change nmp or SATP plugin&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Thank you,&lt;/P&gt;&lt;P&gt;Regards,&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Wed, 06 Mar 2019 14:24:19 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/VMware-vSphere-Discussions/Does-disable-ATS-affect-storage-performance/m-p/1833967#M19409</guid>
      <dc:creator>Marmotte94</dc:creator>
      <dc:date>2019-03-06T14:24:19Z</dc:date>
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