well sure, it s obvious that firewire is better than scsi. it s much much faster, it s hot swappable, and you can have, how many? 255 devices? my scsi chain only allows 7. so for external devices there is no question that firewire is preferred.
but let s talk about internal devices. you have a choice between IDE and SCSI, i will take SCSI every time. the drives go up 15,000 rpm, as compared to IDE 7,200, and the data rates something like 160 MB/s for ultra160, compared to 33 MB/s for IDE. and SCSI lets you have 7 devices on a chain compared to IDEs 2.
if you go to apple s configure your machine website, and click more info next to the hard drive choices, they will lay it all out for you, and tell you that SCSI is definitely the hard drive of choice for performance machines.
I am migrating from my powermac 9600 to a G4, finally. I have a 40 GB 15,000 rpm scsi ultra 160 hard drive, and i would like to be able to use it in my new machine. i don t have to tell you that a hard drive like that costs a lot of money, and i would like to be able to use it. it was too fast even for an old powermac 9600 with only a fast scsi-2 bus. so for an internal drive, i want SCSI. i thought that if i were getting a SCSI card, i could get one that would also support my old SCSI external peripherals. it looked like the adaptec 2906 was exactly what i needed. but i can t boot off the drive, so it s pretty much useless.
now apple is definitely still supporting SCSI, at least for it s internal devices. i think they will continue to do so until something better than the current choices come along. i want to know what card they use for it.
... You are better off getting a SCSI to firewire adaptor if sich a thing exists for your current devices.