Virtualbox

:: convert to esxi vmdk
"C:\Program Files\Oracle\VirtualBox\VBoxManage.exe" clonehd old-disk.vmdk new-disk.vmdk --format VMDK --variant Fixed,ESX

:: convert raw to esxi vmdk
"C:\Program Files\Oracle\VirtualBox\VBoxManage.exe" convertfromraw old-disk.vmdk new-disk.vmdk --format VMDK --variant Fixed,ESX