https://communities.vmware.com/t5/Virtual-Disk-Development-Kit/Backup-jobs-fail-to-use-HotAdd-and-fall-back-to-NBD-transport/m-p/2860485#M2331 <P><SPAN>We tried to backup a machine many times ,the machine occasionally failed to use HotAdd and fell back to NBD transport method。</SPAN></P><P><SPAN>The vddk log is following：</SPAN></P><P><STRONG>VixDiskLib:vixDiskLib ConnectEx:Advanced transport modes not available for opening moref=695. Cannot use advanced transport modes for &lt;ESXi IP&gt;/moref=695/695-snapshot-47：Invalid search specifier: moref:695.)</STRONG></P><P><SPAN>This happened occasionally.</SPAN></P><P>Does any one have any idea of what could be going wrong here?</P><P><STRONG>Environment:&nbsp; ESXi 6.5&nbsp; and&nbsp; VDDK 6.7.3</STRONG></P> Tue, 03 Aug 2021 07:43:38 GMT Yang_ 2021-08-03T07:43:38Z https://communities.vmware.com/t5/Virtual-Disk-Development-Kit/Backup-jobs-fail-to-use-HotAdd-and-fall-back-to-NBD-transport/m-p/2860485#M2331 <P><SPAN>We tried to backup a machine many times ,the machine occasionally failed to use HotAdd and fell back to NBD transport method。</SPAN></P><P><SPAN>The vddk log is following：</SPAN></P><P><STRONG>VixDiskLib:vixDiskLib ConnectEx:Advanced transport modes not available for opening moref=695. Cannot use advanced transport modes for &lt;ESXi IP&gt;/moref=695/695-snapshot-47：Invalid search specifier: moref:695.)</STRONG></P><P><SPAN>This happened occasionally.</SPAN></P><P>Does any one have any idea of what could be going wrong here?</P><P><STRONG>Environment:&nbsp; ESXi 6.5&nbsp; and&nbsp; VDDK 6.7.3</STRONG></P> Tue, 03 Aug 2021 07:43:38 GMT https://communities.vmware.com/t5/Virtual-Disk-Development-Kit/Backup-jobs-fail-to-use-HotAdd-and-fall-back-to-NBD-transport/m-p/2860485#M2331 Yang_ 2021-08-03T07:43:38Z