Rob,
he might be referring to a long waited technlogy that would allow you to vmotion across different processor generations. In order to make this happen support must be built into the processor and into the processor.
I have been looking more at the Intel house of the things for a number of reasons lately (i.e. there was not so much to look at the AMD house and also it looks like Intel was more fashionable than AMD for more customers ... but I am sure that as all fashions ... this will change again). For Intel in order for this to happen you('ll) have to have at least Penryn based CPU's cores (i.e. the lastest 52xx and 54xx QC cpu's for the 2 socket space or Dunnington which is the new 6 cores CPU for the 4 socket and above space). These processors have built-in morphing features that allows them to present themselves as "old kits" when it is required. That way you'll be able to VMotion between one of these beasts and say ... a Tulsa based box (like the IBM 3950/3850 ... which i think would be a DL580G4 if I get it right). This will only be possible with VMware software support which should happen shortly anyway (sorry can't post here details as you know VMware is pretty paranoid about people disclosing stuff).
So .. back to the point.... I think that Barcelona has this hardware built-in support (to be confirmed as I am not sure) and they are waiting for VMware to come out with the update to intercept it. I am not even sure if the same VMware update will work for both Intel and AMD cpu's....
Massimo.
Massimo Re Ferre'
VMware vCloud Architect
twitter.com/mreferre
www.it20.info
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) and enable EVC.