I have a customer who is located in a remote area. They have frequent power outages and get hit with some pretty tough weather - (lightening strikes). Over the years, I was a proponent of separate systems for each of their industrial functions. My thinking was we were spreading the risk over more systems. We had a spare parts kit available. This worked very well for many years - good old single user DOS days.
This past year they have upgraded their control software to the XP version - and in the process, consolidated 3 functions that were running on 3 individual machines onto a single box. When this machine goes down - their ability to produce is gone with it.
Here is the situation I would like to create for them.
I want the highest level of redundancy for every component in their desktop system. I want to be able to direct them (over the phone) to replace (swap) any component out with a spare replacement in order to get themselves back up and working in the shortest possible time. The solution can include 2 matched desktops, matched in configuration and setup, plus a complete spares kit. The solution must cover all Windows XP activation issues - in the event of a swap of hard disk from one matching system to the other. This is the "near online" backup situation.
A fully redundant "on line backup" situation would also be considered.