Thanks for the further insights. I have a single SCSI2SD, which I use in my LC III, which acts as a central hub for my 'classic' network, though a G4 serves as the large file storage (installers, etc) device. So, you're correct in that the 10k drive was an inexpensive solution to improve capacity/drive speed relatively cheaply. Max1zzz's SCSI-to-SCSI adapter works extremely well with it. My OCD kicks in a bit when I think of only 4GB of 74GB being useable, so hence my question about drive formatting.

The interesting thing about the original 500MB drive that came with it is that 1) it has 7.1, which as you say, is bloody fast (relatively speaking), and 2) it has a lot of the original owner's apps - some of which are quite unique. In a perfect world, I'd image that drive somehow, but I don't have an external SCSI disk drive that's up to the task. Though perhaps some way over the network?

Anyway, I'll have a go at all this at some stage and update my experience here. Many thanks, once again. That thread was informative - well, the parts that you suggested!