I only have two, which is not enough, I need at least 4 more, ideally including an IBM 2420
On the topic of 9-track drives, I still need to do some preventative maintenance on my IBM one, (replacing carbon-comp resistors with 1% Metal film, replacing caps, etc) and also fix the Kennedy 9600 that threw sparks and killed it's +12v reg, I hope it didn't blow up anything else important >.<