I saw this blog entry on savagenomands that wondered about VMotion with large Exchange VMs:


"Even with all that horse power, they didn’t talk about network traffic running all exchange 2007 roles on the same box. I wonder how long one of these boxes takes to vmotion. Also I’d like to know the details on how they setup the luns and if they used vmdk files "

I actually did some similar testing with 2000 user Exchange VMs and measured the time for VMotion to complete as well as its impact on the users. The answer - about 6 and half minutes to VMotion a 2000 user VM while under stress (At least with the setup that I had. Your mileage will vary depending on your exact configuration). See the whitepaper on the VMware and Exchange page to get the complete details.

Todd