SCSI confusion…
21-Jun-93 19:27:08
Sb: #104364-SCSI confusion…
Fm: Robert Comer 72446,656
To: Don Curtis/SYSOP 76703,4321
I believe anyone can buy the Maxtor drive (MAJIK amybe?) I'll see if I
can dig up a price. I don't think its over 10,000, but I may be wrong, (I
never tried to buy one. I know this drive has been made awhile.)
Your definitely right about normal drives and cache's!
Maybe you can answer a qusetion for me that I haven't been able to fiure
out exactly: (my thoughts are that it's a bug in the scsi.device IDE code,
not allowing the drive to use it's cache somehow)
I have an A1200HD, 10M of RAM '881 FPU, with a Seagate 92144A 2.5 inch IDE
drive, 16ms access, internal transfer rate of 14.5Mbits. I'm getting a
rediculously low transfer rate on the drive, (197K/s on reads). Now here's
where it gets interesting :), If I do a SCSI Inquire through scsi.device
(which get's changed into an equiv IDE inquire?,) just before a series of
reads, the transfer rate goes up to 880-900K/s, but then it drops back
down to 197K/s on the next group of reads (without an Inquire before)
I get the same results with Diskspeed if I cheat and have another program
do the Inquire just before it does a read test.
Any Ideas?
Bob Comer — Cruising the nets on AutoPilot from Cheyenne, Wyoming