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Pat, you just sent a BIG shudder up and down my spine.... That is NOT the way to do it and and avoid troubles.... You get what you pay for
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For a small business which relies on computers for everything we do, it has worked well for quite a long time in various configs. I still have the first report I ever did in 1993 on the server. DOS, Netware, arcnet, BBS transfer, FTP, etc, were all steps along the way, and today it is more stable than ever.
The only major calamity was when Hewlett Packard Engineering sent us an Excel report that had a virus embedded in it. But even that was recoverable.
Things to note about a small business:
You cannot afford an IT professional, nor can you afford to keep all machines the same. You cannot trust Microsoft support, or most other support. If a OS/machine/hub/firewall, etc acts up, it's cheaper to throw it in the trash or return it, than figure out why it's not doing what it's supposed to.
You always make the assumption that anything you attach to the network might have to go into the trash tomorrow. You never trust anything Microsoft claims is "better", and run the old stuff as long as possible.
Critical computers should stay off the network/internet entirely. Accounting or machine controllers should be "sneaker net".
What some folk don't get (Microsoft, are you listening?), is that a computer is a necessary evil. It is not something you really want. What you want is SOFTWARE to process WORK faster. It would be nice if no O/S, networking, internet, or hardware was needed. None of them actually do any work, so you want them to be as simple and cheap as possible.
Windows Bloat and deliberate holes in their O/S has cost the US more money than 9/11 ever did. While having a My Little Pony desktop layout is interesting, it's probably not a necessary feature for a business computer.
Here's a little blasphemy:
All the computers in the world do NOT have to be linked together to conduct business. You never really have to run two primary apps on a computer at the same time either. Most tasks required to make money don't even need color monitors or a mouse. A trained operator will get more work done per hour with a black and white monitor, no mouse, and no internet. I know this from experience, and back then Lotus 123 was 98,000 bytes ran on a 4.77 mhz 8088 with 128k ram.
But the simplier things are, and the less components and software involved, the more robust the system is, the faster you get work done, and you have less downtime. If there is a .001% chance you will encounter a bug that crashes the system, running 200 different apps in a day (this computer is running 77 right this minute that I know of) instead of 1 or 2 improves your odds.
My business dream world is one where you have an Accounting Appliance. It does nothing but run accounting software. A Report Appliance, A CAD Appliance, A Programming Appliance, etc.
But that's not the Microsoft vision. They want every computer everywhere to run everything. That is fine for a home computer. But it is not what is needed for business. Their "Professional" software is pre-loaded with games, has 20 different screen savers, and must be hooked into the internet to work (actually you can call them up and get a keycode, but they don't want you doing that).
It is truly a joke that hundreds of patches a year need to be loaded on your computer JUST TO KEEP THE O/S running correctly! Keep in mind the O/S does not make you money. It's something you have to have loaded on your computer for it to turn on.
Some might call me an alarmist or a technophobe, but think about this. It is the year 2010. If Microsoft or a hacker with MS inside knowledge wanted to, they could shut down over 50% of the computers in the US at any time. They can send a message to your computer in the background that is the "unauthorized O/S software" message for XP and newer platforms.
I believe the person who authorized that risk should be put in jail. It's kind of like a Weapon of Mass Destruction produced by a non-military entity.
Cliff Notes: I use the simpliest system possible, and it has done me well.