Date: Tue, 14 Nov 1995 23:58:05 +0200 (EET) From: "Andrew V. Stesin" <stesin@elvisti.kiev.ua> To: roberto@keltia.freenix.fr (Ollivier Robert) Cc: hardware@freebsd.org Subject: About Conner and IBM SCSI HDDs (was: Re: your mail Message-ID: <199511142158.XAA20492@office.elvisti.kiev.ua> In-Reply-To: <199511141825.TAA07897@keltia.freenix.fr> from "Ollivier Robert" at Nov 14, 95 07:25:01 pm
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Hello Ollivier, # - Conner: I have a 1080S and I'm very happy with it. Avoid the 1060S if you # don't want to upgrade the firmware. Some series have a bug which appear # with fast drivers like NCR and Aha-2940. The 1080S is a fast drive. What you say about 1060S is no longer true. 1060S are shipped with a good firmvare at least for some months. They do not need any upgrade and works good as I can see (comparatively fast; no errors or failures yet), but a bit noisy. There is another caveat with 1060Ss. Recently I've seen a party of 1060Ss that are made in a strange fashion: they have 80-pin connector on the drive and an extra interface part which converts 80-pin to a "usual" 50-pin SCSI interface. The part has jumpers on it for setting SCSI ID. As I was told by mr. Behrens (his e-mail is <Soenke.Behrens@conner.com> he's VERY helpful in case of any tech. adventures with Conners and he helped me three times!) theese drives are actually 1060E-s shipped as 1060S-s. The wrong thing was that _this_ party of drives was equipped with an interface part (I have it's specs, and exact name) with terminators (resistor packs) _soldered_ into it and there isn't any way to disable termination on it except of a) mechanically remove the resistor packs, or b) call Conner for a replacement part with socketed terminators. I was proposed to do b) by Soenke Behrens, but I think we'll simply snap the terminators off when needed -- replacement will take a nice bit of time. So: people, my opinion is that Conner 1060S and 1080S are good, but _be careful_! # - IBM: three friends brought a very recent IBM drive (not the 662 which is # at least 2 yrs old and very hot) and they seem very happy. It has not # been long enough to see if they will be reliable but they works fine for # now. I've tested two IBM DPES-31080's (1.08Gb) for a while. They are quite as fast as Conners (only a bit slower, under FreeBSD 2.0.5 and NCR 53c810) and _much_ less noisy. They are less hot, too. I know at least two Nowell installations working with this drives for 6 months without any trouble yet. -- With best regards -- Andrew Stesin. +380 (44) 2760188 +380 (44) 2713457 +380 (44) 2713560 An undocumented feature is a coding error.
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