Path: ...!3.eu.feeder.erje.net!feeder.erje.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.arch
Subject: Re: what's a mainframe, was is Vax addressing sane today
Date: Fri, 13 Sep 2024 08:24:19 -0000 (UTC)
Organization: A noiseless patient Spider
Lines: 10
Message-ID: <vc0srj$p5da$1@dont-email.me>
References: <vbd6b9$g147$1@dont-email.me>
	<2024Sep11.113204@mips.complang.tuwien.ac.at> <vbsg1v$1lt4$1@gal.iecc.com>
	<vbtdia$3sl3q$1@dont-email.me> <vbti8q$r2u$1@gal.iecc.com>
	<vbtqu4$2sce$6@dont-email.me> <7WCEO.4677$2nv5.422@fx39.iad>
	<vc0or9$ogub$1@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Injection-Date: Fri, 13 Sep 2024 10:24:19 +0200 (CEST)
Injection-Info: dont-email.me; posting-host="fe8eaca0c36637cab02c0b5baab677cf";
	logging-data="824746"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX19x3sqgnJAL/6Ifd8xy1YB7"
User-Agent: Pan/0.160 (Toresk; )
Cancel-Lock: sha1:8M0nnIAB8ahOupB8WpWeeC88GvQ=
Bytes: 1652

On Fri, 13 Sep 2024 09:15:52 +0200, Terje Mathisen wrote:

> Novell's System Fault Tolerant NetWare 386 (around 1990) supported two 
> complete servers acting like one, so that any hardware component could 
> fail and the system would keep running, with nothing noticed by the 
> clients, even those that were in the middle of an update/write request.

Just so long as it wasn’t the network connection between them that failed.

See also, “CAP Theorem”.