Date: Mon, 2 Mar 1998 13:53:33 -0800 (PST) From: Hugh LaMaster <lamaster@george.arc.nasa.gov> To: freebsd-scsi@FreeBSD.ORG Cc: lamaster@george.arc.nasa.gov Subject: Re: SCSI host adapter... Message-ID: <199803022153.NAA25535@george.arc.nasa.gov> In-Reply-To: <Pine.BSF.3.96.980228213433.5502A-100000@slug.EUnet.pt> from "freebsd@bug.fe.up.pt" at Feb 28, 98 09:47:38 pm
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> Soon I'll upgrade my machine's disk sub-system from IDE to SCSI > but I have some doubts. Vanquish your doubts. You will be happy with SCSI. > Which SCSI host adapter should I buy? I was thinking about > the Adaptec 2940UW but it is soooo expensive here (aprox. > $330) that I thought about the ASUS PCI-SC875 (Symbios > Logic 53C875) which is much cheaper. Which one performs > better? I have not used the ASUS PCI-SC875. But, I have been perfectly happy with my PCI-SC200 fast SCSI II, used with a Quantum fast-narrow SCSI II disk and a Seagate QIC SCSI tape drive. (Yes, "dump" works fine.) Used it under FreeBSD 2.1.?, 2.2.5, and 3.0-current, as well as, ahem, Windows 95. There have been no problems with this controller whatsoever. Performance has been excellent as well. I think I paid $79 U.S. for the SC200, vastly less than the brand-name PCI SCSI controllers were going for at the time. (~Two years ago now.) Diamond also makes two Symbios-based controllers, a single and a dual-bus, based on the Symbios chipsets. > I also know that the ASUS adapter only supports SCSI-2 > so I won't be able to plug a Quantum Atlas II (UW, SCSI-3) > that I am planning to buy. Am I right? The ASUS PCI-SC875 is advertised to be UW. Some companies refer to "Ultra-SCSI" as "SCSI-3", which is misleading, so that is the confusion. > I've heard that from time to time some problems appear > on the Adaptec driver and I've never heard anything similar > about the cards with Symbios chips. But as I know that > wcarchive.cdrom.com is running with 2 Adaptecs 3940 it > shouldn't be a problem, right? Certainly, the code will be exercised thoroughly and the motivation will be there to fix any problems. Perhaps someone should donate some Symbios-based controllers to FreeBSD.org. > I've also heard about the DPT host adapters, which are > very fast trusting the company that produces these cards. > Anyone with experiences on those? I might go with the > inexpensive ASUS card now and buy a DPT latter instead > of the Adaptec... (FYI this is for my home machine and > I can't spend to much money on it) > > Thanks in advance I can't guarantee that it will work, but, from past experience, the ASUS card is a good bet anyway. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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