Using SD card to replace data cassette

Hi,
I want this to provide a fix that could be used on many of these old sequencers that are out there. I have a tech who has worked on 100s of these machines and apparently all the tape drives are dead. They are no longer manufactured, tape is near impossible to find. I would like to offer these to other people who are in my predicament. I want to replace the old technology with a new long lasting alternative.
So the SD card is the route I would like to take.