Re: am I running sata II ?
On Saturday 03 September 2005 10:20 pm, Jens Vogel wrote:
> Hello Mike,
>
> michael@etalon.net wrote:
> > Is there a way to tell if my sata II drives are running
> > at sata II speed? (300 MB/s vs 150 MB/s?)
>
> I don't know whether or not there is a way to tell that (maybe with
> hdparm?).
> But I don't think this matters much anyway.
>
> These days _fast_ harddisks can deliver a sustained data rate of
> about 60MB/s, maybe with peaks of 80MB/s. So if you want to test the
> speed of SATA-II you could try to create a RAID0 array with at least
> 3 fast harddisks and see whether its data rate exeeds about 150MB/s.
>
> HTH,
>
Might explain my tests, I used bonnie++ to test a U320 10,000 rpm drive
located on a U160 HBA, sync rate 160MBsec. I get 51/58 MB/sec for IO,
hdparm -Tt reads 39MB/sec. Bonnie tests file system & hard drive
performance, hdparm ?
--
Greg Madden
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