Vmware - "Failed to open disk scsi0:0: Unsupported and/or invalid disk type 7" error when trying to power on a VM on ESXi 4

Mi è capitato di importare delle macchine virtuali create per Vmware Workstation oppure Vmware Server su un Server Vmware ESXi 4.x/5.x.

Purtroppo tutte le volte che andavo ad avviare la macchina virtuale appariva l'errore:

Module DevicePowerOn power on failed.
Unable to create virtual SCSI device for scsi0:0, '/vmfs/volumes/0d9ea939-5f0ee6a7/Windows XP Professional/Windows XP Professional.vmdk'
Failed to open disk scsi0:0: Unsupported or invalid disk type 7. Make sure that the disk has been imported.

Il motivo di tale errore è che si tratta di macchine virtuali non compatibili.

Per risolvere si può scaricare VMware vCenter Converte:

https://my.vmware.com/web/vmware/info/slug/infrastructure_operations_management/vmware_vcenter_converter_standalone/5_0?rct=j&q=&esrc=s&source=web&cd=1&ved=0CDEQFjAA&url=http://www.vmware.com/go/download-converter&ei=isKPT-P_C9GYOuqHxI8E&usg=AFQjCNG4C_NOLJ3eaX68A3n0TnD1Dbeleg&sig2=P95tZjOlByAPSU2ie0nQmQ

E convertire la macchina virtuale, oppure:

"Alternatively, the virtual machine's virtual disk files can be imported to a format understandable by VMware ESX using the command: 

vmkfstools -i

Connect to the ESX host using an SSH session or ILO/DRAC to use this command."

Informazione ottenute dal KB di vmware:

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1028943