Greg Freemyer wrote:
On 3/5/07, Anders Norrbring <[EMAIL PROTECTED]> wrote:
Right.. I'm actually looking at this
http://www.adaptec.com/en-GB/products/sas/raid/SAS-4800/
Has anybody worked with any of the mix and match SATA / SAS controllers?
They just seem weird to me, so I don't know what I think.
ie. SATA uses the ATA command set. SAS uses the SCSI command set.
The way it works (if you're asking what I think you are) is that the
drives are SATA and talk to the controller using the ATA defined
protocol. The OS is not involved in this. The controller is then
available on the system bus like any other SCSI adapter, indeed they are
often compatible with well-supported models. SCSI instructions (not sure
of the formal name) sent to the controller are then mapped to ATA
instructions (same here) for the hard drives, but the OS plays no part
in this mapping, it is all done by the card.
Hope that clears it up.
Russell Jones
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
