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Fault Tolerance is not currently supported for workloads managed by vCloud Director.
Thanks for the fast reply,
Is this being planned? It's a useful feature to have
FT is very usefull, but currently (even on vSphere 5.0) you are limited to only 4 FT VMs (Primary or Secondary) per ESXi host. So in a cloud where you have many tenants you will have to limit who can enable/disable FT and Turn On/Off FT.
In addition, Turn On/Off FT is dependant on the hardware platform. On some systems you can Turn On FT without having to power-off the VM, on others constructor you need to power-off the VM (Using the same Xeon 5649 processors on HP DL380G7 and IBM HS22v you have different behaviour)
And you would also need to integrate the SiteSurvey analysis process, and allow your tenant to inflate his VMDK if you have a vCloud using NFS. That is a lot of stuff to add to vCloud and validate.