SATA 300 Drive Being Run At 150

[Eduardo Meyer]

On 7/22/07, Jeremy Chadwick <koitsu at freebsd.org> wrote:
> On Sun, Jul 22, 2007 at 12:10:12AM -0300, Marc G. Fournier wrote:
> > 'k, I just bought a new desktop, SATA/300MB/s interface, and this drive:
> >
> > <http://www.wdc.com/en/products/products.asp?DriveID=254>
> >
> > Web site states 3Gb/s ... I'm seeing same SATA!50:
>
> Seagate and WDC both ship SATA300 drives with a SATA150-limiting jumper
> on them.  It's documented on the drive itself, and in the manufacturing
> manuals.  Both companies do this as a precaution; there are some buggy
> chipsets out there which claim to support SATA300 but then break badly
> when utilising it.  This is why the jumper's set to SATA150 by default.
>
> Chances are your drives have the jumper limiting the drive to SATA150.

I have the same situation here, but not the same hardware:

atapci0: <Intel ICH7 SATA300 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x3020-0x302f mem
0xe8200000-0xe82003ff irq 19 at device 31.2 on pci0

ad0: 76319MB <SAMSUNG HD080HJ ZH100-47> at ata0-master SATA150

This drive is withtout the jumper, which according to the manual means
it should operate as SATA300 (while with jumper plugged, it is limited
to SATA150). But it is only controlled as SATA150.

So, chances are my disc also have some problem?


-- 
===========
Eduardo Meyer
pessoal: dudu.meyer at gmail.com
profissional: ddm.farmaciap at saude.gov.br