SATA raid

Vu Pham vu
Mon Mar 26 17:52:47 PDT 2007


On Mon, 2007-03-26 at 14:33 -0500, Net Llama! wrote:
> On Mon, 26 Mar 2007, Vu Pham wrote:
> > Currently my home PC has a scsi raid controller with 4 scsi drives set
> > up in raid 0 mode in order to get the highest performance. ( yes,  I
> > have backed the system up pretty often ).
> >
> > The problem is these scsi drives are pretty loudy at night when there is
> > no background noise.
> >
> > I want to replace these scsi drives by two SATA drives with raid 0.
> >
> > For performance, is a built-in sata raid controller as good as an
> > pci-express one ? If the difference is 8 out of 10 it will be fine to
> > me, but if it is something 5 or 6 out of 10, then I would consider
> > looking for an external one.
> >
> > My motherboard is Gigabyte GA-965P-DS3.
> 
> SATA has performance standards just like PATA & SCSI.  If the onboard 
> supports SATA-II, then the performance should be as good as you're going 
> to get.  On the other hand, if you add a PCI-E SATA controller, and it 
> doesn't support SATA-II, then the performance will be worse.  In other 
> words, you need to look for which SATA spec is supported by the 
> controller, and then get drives that match that spec version.
> 

Thanks, Lonnie.

The spec says it is SATA II, 3Gb/s. My hard drives are Raptor X that
supports only 1.5Gb, but some benchmarks show the bottleneck is not that
sata speed but the plate access time is the main factor. 

I will try 2 hdd with this onboard sata raid to see how it works.

Vu





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