Possible to run nested ESXi 5.1 within vCenter Server / ESXi 5.0?

Hi all,

I have sucessfully created a nested VM of ESXi 5.1 with vCenter Sevrer 5.1 VM within my vCenter Server / ESXi 5.0 physical  environment.

I have sucessfully powered on the nested ESXi 5.1 and added it to the vCenter Server 5.1 VM.

However, I am having trouble getting Virtual Machines to run within the nested virtual environment, such as dropped iSCSI connections, VM's suddenly becoming unresponsive and most of all - Purple Screens of Death on the nested ESXi 5.1.

Is what I am attempting to do just impossible, or are there tweaks to the 5.0 physical environment that I can add to make this possible?

Many thanks,

Martin.