On Sun, 23 Apr 2000, bug1 wrote:
> Chris Mauritz wrote:
> >
> > > Hi, im just wondering has anyone really explored the performance
> > > limitations of linux raid ?
> >
>
> Ive just managed to setup a 4 way ide raid0 that works.
>
> The only way i can get it working is to use *two* drives per channel.
> I have to do this as i have concluded that i cannot use both my onboard
> hpt366 channels and my pci hpt366 channels together.
>
> Ive done some superficial performance tests using dd, 55MB/s write
> 12MB/s read, interestingly i did get 42MB/s write using just a 2 way ide
> raid0, and got 55MB/s write with one drive per channel on four channels
> (i had no problem writing, just reading) so surprisingly i dont think
> the drive interface is my bottleneck.
> IDE will always beat SCSI hands down for price/performance, but scsi is
> clearly the winner if you want 4 or more drives on one machine, as ide
> just doesnt scale.
one of the ABIT boards comes with 4 onboard IDE controllers instead of
the usual 2. As I recall, the kernel software will allow you to run up to
8 ide pci channels, and the 2.4 kernel reportedly will do more.
Michael
