Hi. In the next week or two I'm going to be buying a PCI Pentium box
on which I'm going to be running Linux (along with Win95 and, perhaps
eventually, NT). Currently, I own a Mac with a SCSI DAT drive attached,
and since I want to use that drive with the Pentium box, I was planning on
getting a SCSI-based system. My thought was to get an AHA2940 or a
Buslogic KT-946, since a busmastering disk controller strikes me as a
very good thing. However, the hardware HOWTO suggests that the Intel
Triton chipset's EIDE controller will also do busmastering DMA. So now
I'm thinking of getting a Triton-based motherboard, using the built-in
EIDE controller for the disks, and getting a less-expensive, non
busmastering SCSI controller for the other, presumably slower, peripherals
(the DAT drive, a 4x CD-ROM, perhaps a ZIP drive in the future, etc.).
This will save me some money on the controller and disk (and future disks),
while it doesn't seem that it will cost me much (if anything) in the way
+ Am I reading the hardware HOWTO correctly: do Intel Triton-based
motherboards do busmastering EIDE? If so, how does the performance
compare to busmastering SCSI controllers?
+ The slower, non-busmastering SCSI controller I have in mind is the
Adaptec AHA-2920. Does anyone know how well the 2920 works with Linux,
if indeed it works at all? I haven't seen references to it in the SCSI
or hardware HOWTOs, presumably because it's fairly new.
+ Any comments on this scheme of using EIDE and SCSI together for different
peripherals with Linux? Everything I've read suggests that it is possible
to get them to work together, but if it's difficult and I'm really asking
for trouble, please let me know (BTW, comments re. this setup and Win95
or NT are also appreciated, but please send those via e-mail or followup to
a more appropriate newsgroup).
Thanks very much in advance.
Dave Schreiber "Certainly, objecting to 'political correctness'
- Michael C. Horsch