From mboxrd@z Thu Jan 1 00:00:00 1970 From: rp at servium.ch (Rico Pajarola) Date: Tue, 2 Jul 2019 14:34:21 -0700 Subject: [COFF] Disk Technology was [Simh] Which PDP-11 to choose In-Reply-To: References: <6e8cdcbf-7183-1082-0437-403a6f3b2994@gmail.com> <25855953-9505-481C-A0E2-1AAD53B7BEC5@ccc.com> <28FA3347-B880-400A-B606-1240C83FA867@ccc.com> <005401d5300f$74588a60$5d099f20$@twsoft.co.uk> <20190701141124.GP1912@mcvoy.com> <00c901d530db$cf7b40f0$6e71c2d0$@twsoft.co.uk> Message-ID: if you still have that story, I'd love to hear it. A quick search didn't turn up anything except that Super Eagles is a Nigerian football team. On Tue, Jul 2, 2019 at 12:59 PM John P. Linderman wrote: > I don't have authoritative info on the cause, I'm just repeating what I > heard. A highly viscous substance like glue would explain why it took so > long to fail. In any event, it was nasty. Worked perfectly long enough to > build confidence, then failed spectacularly. It was widespread. I entered a > "Sysadmin Horror Story" contest at a USENIX (San Diego?), and won with a > "short story" entry: *Supereagles*. I still have the shark's tooth trophy. > > On Tue, Jul 2, 2019 at 9:41 AM Tim Wilkinson wrote: > >> >> >> Interesting that it was the platter bonding. The explanation SI gave us >> (They sold us the super Eagles along with their controller) was that it was >> a lubricant. So I had assumed a bearing seal fail. >> >> >> >> Anyway after about 4 swap outs and a lot of lifting they lasted a further >> 15 years until we knocked down the office with the original 750 and its big >> brother an 8810 still in the computer room as all the resellers wanted >> certificates of continuing maintenance that would have cost more than they >> were willing to pay for those vaxs. >> >> >> >> *From:* John P. Linderman [mailto:jpl.jpl at gmail.com] >> *Sent:* 02 July 2019 12:47 >> *To:* Larry McVoy >> *Cc:* Clem Cole ; Patrick Finnegan < >> pat at computer-refuge.org>; COFF ; Tim Wilkinson < >> tjw at twsoft.co.uk> >> *Subject:* Re: [COFF] Disk Technology was [Simh] Which PDP-11 to choose >> >> >> >> There were eagles, and then there were super-eagles. Our experience with >> eagles was great, and we were eager to try the (larger) super-eagles. We >> soaked them for a month or so, then put them into production use. >> Whereupon, they started dropping like flies. It turns out the glue they >> used to attach the platters to the spindle slowly crept out over time, >> eventually coming to grief with a read/write head. This experience was >> wide-spread, and seriously damaged Fujitsu's reputation. >> >> >> >> On Mon, Jul 1, 2019 at 10:11 AM Larry McVoy wrote: >> >> On Mon, Jul 01, 2019 at 09:49:42AM -0400, Clem Cole wrote: >> > An Eagle or Eagle-II was a whole lot lighter (and physically smaller) >> than >> > an RP06 or RP07 (or an RM series drive for that matter). It is >> interesting >> > to hear you had problems with the Eagles. They were generally >> considered >> > the best/most reliable of the day. The SI controller on the Vax was >> less >> > so, although many of us in the UNIX community used them. >> >> We ran Eagles on the Masscomps we had at Geophysics. Nothing but good >> things to say about those drives. >> _______________________________________________ >> COFF mailing list >> COFF at minnie.tuhs.org >> https://minnie.tuhs.org/cgi-bin/mailman/listinfo/coff >> >> >> >> Virus-free. >> www.avast.com >> >> <#m_-5102461650516400670_m_-7814325232288781299_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >> > _______________________________________________ > COFF mailing list > COFF at minnie.tuhs.org > https://minnie.tuhs.org/cgi-bin/mailman/listinfo/coff > -------------- next part -------------- An HTML attachment was scrubbed... URL: