The root of the problem
SCSI
Is was never all that reliable on any system. The most common was termination in the chain issues. This would throw disk errors all day long. And there was never any reliable or logical fix for it.
My best guess is a certain signal was being sent when the clock was set "just so" that temporarily resolved it. But that was SCSI for you. Not even joking when I say getting them to work reliably was damn near witchcraft.
Don't even get me started on ZIP drives.