What is better for Linux(Red Hat)? What works better in general IDE or SCSI?

Thanks

Both works pretty fine. I have my IDE up at 45 MB / s so speed is also no real influence here ;-P

You should think of the adantages of SCSI compared to IDE!

Can you afford SCSI? do you have more than eight (on newer MBs)
devices (disks) you want to connect to your machine? do you want to be
able to connect other devices (scanners, etc.) that use SCSI?
At home, I use IDE because I can afford IDE and don't need to connect
other SCSI devices to my machine. At work I sometimes use SCSI for
some devices (disks and scanners, mostly), but mostly use IDE (again,
it's a cost issue).
I don't think one is better than the other (anymore, SCSI used to be), it's
mostly a preferences/affordability thing.

the linux box that I usually use, when I'm in my apartment, is a Duel 600mhz. I built it 3 1/2 years ago, and it will compare to any 1.5+ghz computer. That is how much SCSI will make you notice the difference between common IDE and SCSI.
I have large 68pin SCSI connectors for both my hardrives, internal cd burner, internal zip drive., and my scanner It's got 520 ram, and it fly's like a charm! Obviously I can notice the difference between the CPU's, the 600's fill up rather quickly, good thing I have two, hehe. Rigth now I'm on my other box which is 1.8gig, and it takes a lot more to load up the cpu, even though I do fill it up quite often. However, in regard to all the peripherials, the 600mhz computer is at least as fast as this one, since everything is IDE on this one.
so, the point here is that..sure SCSI is more expensive than IDE, however, not by that much, maybe 1/3 of the price more. But, this extra price will give you prolonged life expectancy in your computers life time. Hence why I have had not the need to upgrade my 600mhz computer at all. Any program that runns on a 2.2 gighz can run on my 600mhz with no problem, It doesn't lag at all, just like a 2.2gighz.
I dare predict that my 600 system at least has 2 more years of life as it is...after that then it will perhaps need some minor upgrade like more ram.

And YES, SCSI is faster than IDE, no question about it.

i.e. I can have a 24x SCSI burner, and you can have a 32x IDE burner, we burn the same CD, at the same time, and since I've got the 24x I'll bet $1000 euros I'll finish at least half a minute before you, ...so imagine if we had the same burner speed,

and besides...if you want to burn things under Linux, you need to emulate your hardrives you be SCSI, so...if they are already SCSI, you don't need to emulate anything at all, and save yourself of having to put commands into the kernel, HA!!, IDE sucks.

scsi is getting alot cheaper now and it is faster. especially in seek times. on ebay i got:
1 LSI 160 SCSI controler - $50
1 IBM 36gig 15Krpm 3.4ms - $170

nice little upgrade.

So how do you run things like hdparm on SCSI (or scsi-emulated) drives then?

Cool

doesn't that work regardless of whether it is a SCSI or IDE?

kewl.

Not for me, on my scsi emulated ide roms, if I try to do anything with hdparm is returns with an error saying "hdparm doesn't work with SCSI" or some crap like that. Might just be me, but I can't even get info with it:
hdparm -i /dev/scd1
Or anything of the sort...

Cool

hdparm is for IDE/ATA

man hdparm

ah, nice, thanks for the clear up moses,

This site has a good article on scsi called "Boot from a SCSI drive"
http://radified.com/index2.html