[OpenIndiana-discuss] 6 GB SATA drives on SAS HBAs (was: bad WD drives)

[Rich]

Yes.

I've done it,  both with SAS expanders and with normal 4:1 SAS->SATA
breakout cables, and gotten > SATA 2 speeds.

(...with SSDs, as it happens, but that would be almost a necessity for
exceeding SATA 2 in general. :))

- Rich

On Tue, Aug 30, 2011 at 9:20 AM, Russ Price <rjp_sun at fubegra.net> wrote:
> On 08/30/2011 02:39 AM, Mark wrote:
>>
>> Some sata drives just don't handle the sas-sata emulation combined with
>> sas
>> expanders.
>
> Not only that, but I've found that the Seagate ST3500413AS (500 GB SATA
> 6Gb/s) won't work on my Intel SASUC8I HBA (basically an LSI SAS3081E-R,
> which uses the mpt driver). It'll work just fine on an AHCI port, but
> apparently the HBA can't successfully autonegotiate the 3 Gb speed.
>
> No jumper is available to force 3 Gb operation. If I place a jumper on the
> typical Seagate speed limiter location, I get 1.5 Gb operation (but that's
> actually undocumented for this specific drive family - the documentation
> claims jumpers are unnecessary). I haven't tried the 1.5 Gb mode with the
> HBA, though.
>
> Would a 6 Gb SAS HBA work with 6 Gb SATA drives?
>
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