On 8/3/06, Dave Ewart <[EMAIL PROTECTED]> wrote:
On Thursday, 03.08.2006 at 07:30 -0400, Justin Piszcz wrote:
> From my benchmarking on my RAID1 (dual raptor RAID1) it appears it
> reads from one drive or the other.
It all depends on which disk controllers you're using and their
throughput.
I have two, separate SATA disks on two different SATA controllers and
read performance in a RAID-1 configuration *is* (nearly) twice that of a
single disk, in many situations. I think I've got the benchmark
statistics somewhere...
If "it appears it reads from one drive or the other" is the case, then
you probably have a bottleneck somewhere else. Are these disks on the
same controller channel?
I have an Abit AX8
(http://www.abit-usa.com/products/mb/products.php?categories=1&model=215),
with four SATA ports (two controllers).
I have for some time been planning a RAID5 setup using 3 SATA drives
on this motherboard. There would be two SATA drives on one
controller, and one SATA drive on the second controller. I had
assumed that a loss of performance with multiple drives (on a single
controller) only applied to PATA; does it apply to SATA too? If so, I
won't get any better performance with RAID5...
Thanks for your help.
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