I had a Roland EM2000 which came with the 100mb zip floppy. It had all of my styles, midi's etc. one day it stopped working right before a gig, so much for my back-up.

I called roland the following monday and they wanted to charge me for the disk after only a few months of ownership. I learned quick, I had to buy a external zip drive for my computer and make extra zips. Up until I brought the Roland, I had no need for a zip drive. I guess I learned the hard way. Sold the Roland and the zip as a package deal.