Any external scsi housing will suffice for the drive. The A3000 has a db25 connector and most external scsi cases have a 50pin centronics interface. So a db25 to centronics cable is the easiest method of connecting the drive/case and cost approx $10
The internal scsi drive ID for the A3000 is usually set to either 0 or 6 so make the external drive ID 2 or 3 before connecting. Scsi termination on the internal ribbon cable or drive has to be active, as the external will also need termination either on the drive or use a passive style terminator on the daisy chain passthru on most cases. Both ends of a scsi chain need termination.
Scsi termination causes most headaches, so read up on tutorials on the net before tackling this.
Also the max capacity of the drive depends on the kickstart version you have installed. Kickstart 2.04/Workbench 2.1 will allow 2.1gig size while kickstart/Workbench 3.1 will allow upto 4.2gig capacity. OS3.5 and OS3.9 should allow greater capacity but I have never tried this.
I got my external scsi case from eBay, approx $50 Australian. Hope this helps.
