Are old SCSI tape drives not all created equal?

On Aug 17, 2016, at 3:11 PM, Guy Sotomayor Jr <ggs at shiresoft.com> wrote: ... If you *really* want to see how this was screwed up, take a look at Fibre Channel (which is basically SCSI over an optical Fibre network). While the commands are standard, you can?t really build a Fibre Channel configuration without using (a lot) of vendor unique commands. And guess what? Each vendor has their own set! It?s so bad that each combination has to be tested (even down to the Fibre channel cards?the commands they support are not all the same). In other words, just because I have a working configuration with brand A card, brand C switch and brand E disk array, does not mean that I can put in a brand B switch and still expect it all to work. The sad thing is that the industry is/was happy with that.