Date: Wed, 22 Jan 1997 18:22:07 +0500 From: "David Alderman" <dave@persprog.com> To: ee@burst.lever.com (Edward Elhauge), freebsd-hardware@freebsd.org Subject: Re: Adaptec 1542 Message-ID: <199701222322.SAA10034@persprog.com> In-Reply-To: <199701222016.MAA15676@burst.lever.com>
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On 22 Jan 97 at 12:16, Edward Elhauge proclaimed:
>
> Sometimes it will hang after fsck or sometimes it will timeout after
> running for a couple of hours. I get the following error messages:
>
> sd0(aha0:0:0):timed out
> adaptor not taking commands.
> Debugger("aha1542") called. frozen?!
>
> So my questions are:
> 1) Is there something I can do in the kernel to fix this problem?
>
> 2) Is there someghing inherently wrong with Mitac motherboards?
>
> 3) Is there another brand or model of SCSI adapter that is more reliable
> in a FreeBSD environment?
>
I cannot answer 1) or 2) as well as others on this list that are far
more knowledgeable. As to 3), the same applies, but I will answer
anyway! The Adaptec 1542, being a bus-mastering ISA controller, is
less than optimal with more than 16 meg of RAM (since that is all an
ISA bus can address) so you would be much better served with a PCI
controller, such as a Symbios Logic (NCR) chip based SCSI controller.
The Asus SC200 is one example, and I believe Tyan makes a few.
You might want to check with Mr Grimes for a specific product.
Adaptec controllers have been problematic lately so they should
probably be avoided unless they change their current modus operandi.
Besides, the Symbios Logic chips are cheaper! I saw a few
recommendations of Tekram here (JKH?) so they might be a good bet as
well, although I cannot personally vouch for them.
======================================
When philosophy conflicts with reality, choose fantasy.
Dave Alderman -- dave@persprog.com
======================================
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