Why did you use SCSI? Just because you didn't have an ATA controller card on the shelf? Would an add-on ATA controller solve the problem, or would it have the same issues?
Surely a sub-10 GB SCSI drive is ancient. You're not going to use it very long, are you? What's your ultimate plan for the final drives configuration?
Inquiring minds want to know! :-)
Cheers,
Scott.