This issue is resolved by using the NFSv4 protocol for mounting NFS volumes.
Note: NFSv4 is released with ESXi 6.0, and later versions. It is not available in earlier versions.
To work around this issue, ensure that the virtual machine resides in the same host where the backup appliance is installed.
Note: Alternatively, you can use LAN/NBD transport that uses the NFC (Network File Copy) in your backup solution or disable SCSI hot-add through the backup software. For more information about NBD transport, see the
Virtual Disk Transport Methods section in the
Virtual Disk Programming guide.