I agree - SSD is about the same price as a 147G SCSI disk - 'Most' show content would fit on a 64G SSD

However, for those who use SCSI, to answer the question, the ATTO SCSI Cards are the only SCSI option for the G5's.

There are a number of 10K and 15K SCSI drives available - Cheetah 10K.7 - 147GB ULTRA 320 SCSI drive, in tests in a G5, performed better than a Cheeta 15K. Try Nevs recommendation of the Fujitsu MAX3147NP if you dont go with an SSD