Date: Fri, 12 Sep 1997 21:44:38 -0500 (CDT) From: "Jay D. Nelson" <jdn@qiv.com> To: spork <spork@super-g.com> Cc: Don Wilde <don@PartsNow.com>, Marco Molteni <molter@logic.it>, freebsd-questions@FreeBSD.ORG Subject: Re: Clustering/fail-over capability? Message-ID: <Pine.BSF.3.96.970912213635.1736A-100000@acp.qiv.com> In-Reply-To: <Pine.BSF.3.96.970912211308.12209A-100000@super-g.inch.com>
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That's exactly the way we set up high availability systems. Differential SCSI or SSA in each system cabled through an external tower of drives. Add a serial cable between the two systems to check on health and a couple of daemons to check machine state and you can cobble together a rudimentary HA system. -- Jay On Fri, 12 Sep 1997, spork wrote: > To stray slightly from this thread, has anyone seen this type of setup in > the PeeCee world: > > SCSI-ADAPTER----DRIVE----DRIVE----SCSI-ADAPTER > > I've seen mention that two controllers can exist on the same chain, is > that true? What type of things could one do with this? > > Off to read the SCSI-FAQ, > > Charles > > On Fri, 12 Sep 1997, Don Wilde wrote: > > > and here's another take on this, if we can make a port happen. Note > > SOURCE availability. > > > Hi: > > > > > > We are pleased to announce the availability of MO6 Version 3.0 > > > Release 1.04 (beta-4) - compatible with BSD/OS 3.0, patch level > > > K300-001 through M300-029. > > > > > > MO6 is a 6 processor version of the MOSIX multicomputer enhancements > > > of BSD/OS for a PC Cluster. If you have 2 to 6 PC's connected by a > > > LAN, you can experience truly multi-computing environment by using > > > the MO6 enhancements. > > > > > > The MO6 Distribution > > > -------------------- > > > MO6 is available either in "source" or "binary" distribution. It is > > > installed as a patch to BSD/OS, using an interactive installation > > > script. > > > > > > MO6 is available at http://www.cnds.jhu.edu/mirrors/mosix/ > > > or at our site: http://www.cs.huji.ac.il/mosix/ > > > > > > Main highlights of the current release: > > > -------------------------------------- > > > - Memory ushering (depletion prevention) by process migration. > > > - Improved installation procedure. > > > - Enhanced migration control. > > > - Improved administration tools. > > > - More user utilities. > > > - More documentation and new man pages. > > > - Dynamic configurations. > > > > > > Please send feedback and comments to mosix@cs.huji.ac.il. > > > ------------------- > > > ______ ____ ___ ___ _ __ > > > MOSIX R&D Group ) ) ) ) ) ( ' ) \ / E-mail: > > > Hebrew University / / / / / \ / / mosix@cs.huji.ac.il \ > > > Jerusalem, Israel ( ( (___( ___) _(_ __/ \_______________________) > > > > > > > > > > -- > > oooOOO O O O o * * * * * * > > o ___ _________ _________ ________ _________ _________ ___==_ > > V_=_=_DW ===--- Don Wilde [don@PartsNow.com] [http://www.PartsNow.com ] > > /oo0000oo-oo--oo-ooo---ooo-ooo---ooo-ooo--ooo-ooo---ooo-ooo---ooo-oo--oo > > > -- Jay
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