Has anyone had any experience upgrading their ESX host from dual-core CPUs to quad-core?
Our current hosts are HP DL-380 G5s, with 2 x Xeon 5160 (3.0GHz dual-core), for 4 CPU cores. Is there anything that needs to be done at the software level as either pre or post upgrade operations for ESX 3.0.2, or would it jsut be a matter of dropping in the CPUs and turning the machines back on? And would any of Intel's quad-core CPUs be VMotion compatible so that we can minimize downtime?
I don't think ESX should care. I've gone from 2 -> 4 single core procs and had no problem, but never swapped out procs. These are based on Core2 technology, so the Magic 8-Ball says "odds are good"
HP would seem to agree:
Check my blog:
One bit of advice: ensure that your system BIOS is up to date before attempting to replace your CPUs.
To the best of my knowledge, ESX should take a 51xx to 53xx upgrade without issue (have not done it myself, however.)
I've added CPUs with no problems before, there was no change that had to be made to the OS. As far as going from Dual Core to Quad Core, I asked HP about replacing the Dual Core CPUs in our 480c blades with Quad Cores and they said that it can't be done.