I have a production cluster of 16 Xeon 56xx-series hosts running ESXi 4.1 with a vCenter 4.1 managing them for HA and DRS. They're setup as using the EVC mode "Intel Xeon 32nm Core i7", but I want to add some older 55xx-series hosts which obviously can't run in that mode (they'll need the "Intel Xeon Core i7" mode instead).
You can increase but not decrease EVC mode 'live' and I can't really take down all the guests, not easily anyway. Is there a way of doing this without?
Thanks in advance.