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echo: aust_amiga
to: All
from: Ivan Wheelwright
date: 1996-10-31 23:34:34
subject: SCSI vs IDE probs.

I was wondering about some of the strange differences between IDE and SCSI
and if i can fix some noticable differences.

History:
I have had 5 SCSI drives on my A3000 for about 3 years.

I now have transferred everything to my A4000, i have 2 IDE drives.

OK. Firstly it seems that if i resume downloading a file using an FTP
program, it crashes, no explaination. No change in software, just hardware.

If i have a large directory, reading the directory is very quick, much
quicker, but if i am to copy a file into a directory that has a lot of
files, say more than 400 files, then i find the copy process is speedy, but
the actual searching part is damn slow, like it is trying to find a place
to copy the file or something, it pauses at the start and end of the file
for anything up to 3 seconds when it was instant with SCSI drives. Can be a
pain when copying several files at once.

When i formatted the new IDE drives, i did select directory cache which i
do not think i did on the SCSI drives, could this be a problem?

What's the safest addbuffers amount you should have. If i have 100 buffers
set in HDtoolbox on each drive, should i still addbuffers in
startup-sequence and how much is too much, i have plenty of memory (about
10 meg free after bootup)
+                                                                           +
 Contact Ivan Wheelwright (EXTRA-BIT) || Internet: ivanw{at}attic.apana.org.au
 The ATTIC BBS ++61 8 3844762         || Fidonet:Ivan Wheelwright{at}3:800/443
+                                                                           +
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