Virtualizing liveCache

I am working with a customer who is replatforming from Physical to Virtual.  They completed their sizing exercise, but for liveCache, the sizing came back with some large numbers.  They anticipate as much as 56,000 SAPS needed for liveCache, and as many as 48 CPUs required.

I have been reading over various notes and documents in regards to liveCache system requirements and sizing.  I am looking for some experiences people have with virtualizing liveCache, especially in large systems, with large SAPS and high utilization.

Is there any formal documenation in regards to virtualizing liveCache, and do others often recommend liveCache to remain Physical?

Thanks for any advice, experiences, or help with this topic.

Ricky