Could not power on VM : Invalid metadata - storage

Hi,

I am new at this forum and I have problems starting VM. My configuration of esx 4.1 is :

- two host in cluster ( esx1 and esx2 ) HA

- datastore is on DELL MD storage conected via ISCSII

When I try to start VM on esx1 I get this error:

Failed to power on VM

Could not power on VM : Invalid metadata.

If I migrate host to esx2 the VM power ON without any errors. When the VM is on I can migrate host back to esx1 and it works normaly until first shutdown. Then I have to repeat the procedure.

Can you help me to resolve this problem ?

Thanks,

Alan