Separate SATA Controllers

[Tyreal]

As you know, with IDE having your hard drives on seperate channels result in more performance. SATA drives don't benefit as much so i've found but there ARE benefits.
RED = Seperate SATA Controllers
Blue = Same SATA Controllers
This graph shows the Maxtor DiamondMax 9. 120 GB 8MB cache 7200 RPM

This next graph is the 36 GB raptor. No raid is applied, this is a single drive.


I'm not an expert at reading graphs in HDTach but it seems that performance has increased.

[gvblake22]

That first graph (with the Maxtor drive), is that showing the performance of a single drive or two identical drives? If two, are they in some kind of a RAID configuration or not? We need a little more info about the setup...

[Tyreal]

oh sorry. I thought it was pretty clear. They are the same drive with each test performed after a reboot. That is the performance of a single drive. there is no raid config on either.

[gvblake22]

Originally Posted by Tyreal

oh sorry. I thought it was pretty clear. They are the same drive with each test performed after a reboot. That is the performance of a single drive. there is no raid config on either.

Well, I'm still confused then. How can you compare the performance of two drives being on the same and seperate controllers if you are only using one drive :?: :?

[Tyreal]

I just run the test at different times! and see the difference.

[gvblake22]

LOL, nevermind....

[Tyreal]

No. Do you want me to explain? maybe it was a little confusing sorry.

[gvblake22]

Ok, your original post and thread title is misleading me I think. It sees like you are talking about drive performance on the same and different controllers right?
Well, in order for you to test the performance of drives that are on the same channel vs. drives that are on different channels, then you need two drives!

But what you are really talking about is the performance of the different controllers, not the drives. Since your graphs show the same single drive on two different controllers, it shows the performance of each controller, not the drive performance. To go along with these graphs, you need to also tell us what two controllers you tested. Otherwise it's like saying that "there is a processor that outperforms another processor in the same benchmark..."

[Tyreal]

I suppose so. It wasn't suppose to get all complicated like this though :(
I was just trying to see if there would be ANY performance difference by spreading the drives over two controllers.

It sees like you are talking about drive performance on the same and different controllers right?

Yes. Its the same drive on different controllers. One line, the red, is of the hard drive on a controller with two hard drives (including the one tested). The blue line is of that same drive on its own controller by itself.