[2524] in linux-scsi channel archive
Re: Adaptec 2940 support
daemon@ATHENA.MIT.EDU (Jeff Noxon)
Tue Sep 23 09:45:13 1997
Date: Tue, 23 Sep 1997 08:24:21 -0500
From: Jeff Noxon <jeff@planetfall.com>
To: Greg Clarkson <gregc@ucaqld.com.au>
Cc: "'Jeff Noxon'" <jeff@planetfall.com>,
"linux-scsi@vger.rutgers.edu" <linux-scsi@vger.rutgers.edu>
In-Reply-To: <01BCC824.627A6EA0@laptop.ucaqld.com.au>; from Greg Clarkson on Tue, Sep 23, 1997 at 01:26:44PM +1000
On Tue, Sep 23, 1997 at 01:26:44PM +1000, Greg Clarkson wrote:
> The comments have certainly turned me off the adaptec option which
> is a shame as it seems to be the only on-board scsi controller I can
> lay my hands on in Brisbane, Australia. Of course I am assuming that
> a on-board controller would be faster than a PCI adaptor. Is that true?
No, an onboard adapter is still on the PCI bus. It just saves a slot and
a little money. On the other hand, you can't upgrade an onboard adapter,
and you can't keep it when you upgrade your motherboard.
> Jeff, have you actually tried a buslogic adaptor? the below comments
> seem to indicate that you at least do not own one.
I have a BT-946 MultiMaster (Fast SCSI) controller. It's fantastic.
I have also used a FlashPoint LT (BT-930?) and I have had favorable
experiences with that as well, although I have no Linux experience
with it. According to the author of the driver, it's generally faster
(less latency) than the older MultiMaster card. It's also less expensive.
> Is it that buslogic are more reliable or is there a performance increase
> compared to the adaptec option?
BusLogic supports free software. I have not had any reliability
issues with either Adaptec or BusLogic. I have not directly compared
the performance of the two, but I can say with confidence that under
Linux you will have better luck with BusLogic or DPT than Adaptec.
The BusLogic and DPT drivers are very mature, quick, and stable.
DPT provides some high-end solutions like RAID and caching that BusLogic
doesn't offer.
Thanks,
Jeff
