>> The main advantage that ESX would offer is in employing VMotion, >> VMMware HA and such. It adds a layer of complexity, but also a layer >> of security and convenience. We're about to virtualize our environment, albeit on Xen rather than ESX. (It's been my experience that Xen performs better.) We're also moving from a single node to a six-node murder. I don't think a mail server requires anything different of you than any other application -- install the app and test it thoroughly. Maybe you wouldn't be able to handle 2500 connections on a single IMAP server anymore but you would be able to under murder? Maybe the hardware running the new hypervisors is new enough relative to your 5-year-old hardware to overcome the overhead of virtualization? FWIW, I won't run anything on hardware anymore unless I absolutely have to. To me, the benefits of running virtualized outweigh the pitfalls -- dealing with real OS installs on real hardware, dealing with multipathing and SAN (virtual disks are easy), etc. John -- John Madden Sr UNIX Systems Engineer Ivy Tech Community College of Indiana jmadden@xxxxxxxxxxx ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
