[olug] OT: Virtualization - Server Spec's

[Obi-Wan]

> Just a curious thought.  I typically use memory as my "main" design
> specification among CPU/Disk/Memory and purchase servers based on
> their cost per GB of memory.  However, I do keep in mind what my
> average load of the virtual machines on the server will be, I still
> mainly look at memory.  What is the method to YOUR madness?

At the hospital where I used to work, we had a farm of six or so
production VMware ESX servers on which we ran over a hundred guests.
RAM was *ALWAYS* the limiting factor on how many guest OSes we could
support on a server.  I think we had 32GB of RAM on each 8-core server
by the time I left.  CPU utilization was never an issue unless a couple
of the guests had runaway processes.

-- 
Ben "Obi-Wan" Hollingsworth                             obiwan at jedi.com
   The stuff of earth competes for the allegiance I owe only to the
     Giver of all good things, so if I stand, let me stand on the
       promise that You will pull me through.  -- Rich Mullins