In a message dated 10/18/01 9:49:30 AM, [EMAIL PROTECTED] writes:

<<
BTW, the thing about it seeing the drives as ATA is from Sonnet's website. I
haven't booted into OS X with it yet.
>>

General comment ...

On Linux and other variants of Unix, a PCI UATA card on a Mac is seen as an 
UATA card, not as a SCSI card.

It is a combination of MacOS's SCSI Manager 4.3 and the card's firmware which 
makes the card appear to be a SCSI card, and the attached drives appear to be 
SCSI drives.

Linux cannot see those cards as SCSI cards unless they are really SCSI cards, 
which they can never be. And, Linux cannot see those drives as SCSI drives 
unless they are really SCSI drives, which they can never be.

Therefore, it is mandatory when using an UATA card to install the proper 
parameters for that card.

Each one will be different ... not all alike as they are under MacOS plus the 
card's firmware.

Being a Unix derivative, OS X would have the same or a similar problem as 
Linux.


>>
> I'm probably going to get a Sonnet ATA/100 to replace my VST Ultratek
> ATA/66, which is not and probably never will be OS X compatible. Thanks a
> lot VST/Smartdisk.
>>

Sonnet's UATA/100 card is made by Promise, just as VST's UATA/66 card was.

Why Sonnet jumped ship in midstream is anyone's guess, as ACARD, Sonnet's 
previous UATA/66 card suppler, had an UATA/100 card coming, just as Promise 
did.

The firmware for these cards was *not* developed by Sonnet or Promise, but 
was developed by the same group of software contractors.

Given that this group of contractors will be developing Sonnet's UATA/100 
firmware, it is not completely out of the question that these same 
contractors could develop OS X-compatible firmware for the quite similar VST 
UltraTek 66 card.

The designs of the Promise chip used in the Sonnet UATA/100 card and the 
Promise chip used in the VST UATA/66 card are remarkably similar.


So far, the Sonnet UATA/66 card is the only one I have physically seen which 
claims OS X compatibility ... and that card is made by ACARD, not by Promise.

And ACARD developed its own firmware for that UATA/66 card (and I would 
presume also for its UATA/100 card).

ACARD's UATA/33 firmware (used on the ProMax TurboMax card) was developed by 
the same contractors who are now working for VST on its UATA/66 card, and for 
Sonnet on its UATA/100 card.


If you can figure all these incestuous relationships out, you might see that 
OS X compatibility is a possibility for the ProMax TurboMax UATA/33 card and 
the UATA/66 VST card.

But don't hold your breath.


One thing seems certain ... Linux parameters are available for just about 
every UATA card out there.


My $0.02 ... YMMV.

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