Date: Mon, 20 Mar 2000 08:13:13 -0000 From: Nigel Roles <ngr@symbionics.co.uk> To: freebsd-scsi@FreeBSD.ORG Subject: RE: controller Message-ID: <1E485299309FD211A2100090271E27A401AF067B@symnt3.cadence.com>
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I would second that. The Tekram 390U2W has the auto-sensing terminator switching so you can mix LVDS and SE on the same bus without the whole lot reverting to SE. This can be useful for internal cabling. This is not the same as auto termination (deciding whether to connect terminators at the host adaptor) which all cards do. In dual channel, Symbios has the SYM22910 which has the awesome SYM53C896 on it. However, there is no 50 pin connector, and no auto LVDS/SE switching. The Adaptec controller suggested (...160) is an Ultra/160M controller, also described ramdomly as Ultra3 by box shifters. This does Ultra 2 wide, but transfers data on both edges so achieving 160MBps burst. There is no need to buy this unless you have Quantum 10K Atlas IV drives, the only ones to support it so far. Symbios also sell a SYM22915 with their Ultra-160/M chip (53C1010) on board. I'd be interested to know which dual channel controller Tekram are doing. -----Original Message----- From: naddy@mips.rhein-neckar.de [mailto:naddy@mips.rhein-neckar.de] Sent: 19 March 2000 12:56 To: freebsd-scsi@FreeBSD.ORG Subject: Re: controller Chuck Robey <chuckr@picnic.mat.net> wrote: > I've decided to get myself a couple of the new IBM 18G LVD scsi drives, to > push away the storage demon (demon, NOT daemon!) a couple more > years. Seeing as I'm going LVD in a big way, I can't hold on to my > current controller, an NCR875. Anyone got an idea what's the best current > mfr/model for a reasonably good LVD controller? Any of the various manufacturers using NCR^WSym^WLSI chips. Personally I'd pick up a Tekram 390U2W. Equivalent adapters are available from at least Symbios Logic and Dawicontriol. Tekram also has a dual channel adapter in the pipe, according to their CeBIT display. Symbios already ships one. Tekram mentions FreeBSD support on the box and they also offer FreeBSD drivers, although you simply want to use the sym one for their 390F and 390U2W adapters. > I just want the model name, I'll worry about finding the deal myself > (unless you have it right at hand). I'd happily point you to a store, but I suspect we're on different continents. -- Christian "naddy" Weisgerber naddy@mips.rhein-neckar.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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