High availability on two boxes

[Les Mikesell]

Uno Engborg wrote:
> My idea is to run virtual machines that if hardware fails moves over to 
> some other physical box in case of a hardware failure. Even if you have 
> fast boxes with lots of memory, there is  a limit to how many virtual 
> machines you can run on one box, and still get decent performance. So 
> chances are that I will nned more physical boxes. At the very least 
> there should be a plan on how to add them, and it should be possible to 
> expand the system without taking it down.

Why not start with a pair of physical machines and when you need to 
expand, add another pair that doesn't share anything with the 1st set?

-- 
   Les Mikesell
    lesmikesell at gmail.com