From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: tuhs-bounces@minnie.tuhs.org X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.1 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id dafb2b8b for ; Sun, 24 Jun 2018 18:51:31 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 28534A181E; Mon, 25 Jun 2018 04:51:30 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 868299E5BF; Mon, 25 Jun 2018 04:51:15 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 5F9189E5BF; Mon, 25 Jun 2018 04:50:17 +1000 (AEST) Received: from oclsc.com (oclsc.com [206.248.137.164]) by minnie.tuhs.org (Postfix) with SMTP id BA5F99E5BD for ; Mon, 25 Jun 2018 04:50:16 +1000 (AEST) From: Norman Wilson To: tuhs@tuhs.org Date: Sun, 24 Jun 2018 14:49:46 -0400 Message-ID: <1529866190.27006.for-standards-violators@oclsc.org> Subject: Re: [TUHS] Old mainframe I/O speed (was: core) X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" Paul Winalski: That was the VAXstation-11/RC. === Yep, that's the name. My first batch of discarded MicroVAX IIs were the original backbone routers for a large university campus, installed ca. 1990. That backbone ran over serial-line connections, at 56Kbps, which was quite impressive for the day given the physical distances involved. Either they had a bunch of Qbus backplanes lying around, or someone computed that the cost of an 11/RC plus a backplane was appreciably less than a system with an unobstructed backplane. In any case, they swapped most of the backplanes themselves. The one I got that still had the glue in was an anomaly; maybe it was a spare chassis. The MicroVAX routers ran Ultrix, and some of them had uptimes of five years when they were finally shut down to be discarded. All the hardware I rescued tested out fine, and some of it is still running happily in my basement. I've had a few disk failures over the years, and I think lost one power supply back around Y2K and maybe had a DZV11 fail, but that's it. We don't make hardware like that any more. Norman Wilson Toronto ON