(Much of the advice here applies to any legacy system you need to keep running, and some of it is useful just for general disaster planning)
If you are running a SCO system, it's time to get very serious about protecting yourself. This article assumes that you either cannot switch to another platform or that switching is too difficult (see Time to Dump SCO?).
At this writing (May 2004), we have no idea what will happen as a result of SCO's lawsuits. It's a strange world, and it is certainly possible that they will emerge victorious, or will lose without being seriously damaged. However, the prospects don't look all that rosy right now, so if your business is dependent on this software, you need to proactively defend yourself.
Things to consider:
If the reason for your being "stuck" on SCO includes defunct hardware such as a specialized i/o board no longer being manufactured, try to buy a few of these boards to have on hand in case of failure. The obvious place to look is eBay.
You also need to protect your system hardware. It's quite possible that the SCO OS you have now will not run on hardware manufactured just a few years from now. Buy up some systems as reserve. Don't neglect duplicating your backup solution and make sure you have spare media. Yes, DAT tapes will probably be around for a long, long time, but better safe than sorry.
Test that you CAN duplicate your system on other hardware. Take the time to do a fresh install or a restore from a Supertar and be sure everything works. Better to find out about problem areas now than later.
If you aren't currently running the latest version of Openserver or Unixware, consider buying the upgrade now even if you don't plan on installing it now. Consider also buying extra user licenses in case you add employees and are unable to purchase this software then.
Buy the upgrades for backup software like Microlite Edge, LoneTar, Facetwin, etc. These folks may continue making SCO versions for many years, but you never know.
Consider downloading all available patches and supplements, even if they relate to hardware or software you are not running now. You may also want to get all available Skunkware software. You never know what you may need in the future.
Make copies of all install CD's. Do the same for all floppy disks, and also transfer the floppy disks to disk images (dd if=/dev/fd0135ds18 of=thisdisk) and get those onto cd or dvd media.
Make sure you know where all relevant documentation is: installation manuals, user manuals. Make copies or purchase duplicates now (again, eBay is the place to look).
Now is the time for a brain dump from anyone who works on or maintains your system. If SCO does disappear, some of your external suppliers and contractors may move on to greener pastures and of course employees always come and go. Get them to document as much as they possibly can about your system. If your support people do become unavailable, check my Consultants list for other resources.
The point of all of these things is to be able to keep your legacy systems running as long as possible. Of course you will investigate other alternatives, and you may never have need for some of the measures suggested,but being prepared can make the difference for you later.
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More Articles by Tony Lawrence © 2012-07-13 Tony Lawrence
The history of the world teaches us that succession is dangerous and that the strong take what they want. It's not likely to be any different with Linux. (Tony Lawrence)