From owner-freebsd-isp  Fri Feb 20 00:33:45 1998
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  (8.6.12/D) Fri, 20 Feb 1998 11:31:58 +0300
From: bag@sinbin.demos.su (Alex G. Bulushev)
Message-Id: <199802200831.LAA13139@sinbin.demos.su>
Subject: Re: fault tolerant :)) setup
In-Reply-To: <Pine.A32.3.96.980219185451.24805C-100000@arnica.datanet.hu> from "Gabor Dolla" at "Feb 19, 98 07:02:53 pm"
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To: agdolla@datanet.hu (Gabor Dolla)
Date: Fri, 20 Feb 1998 11:31:58 +0300 (MSK)
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> Hi
> 
> I'd like to hear opinions on fault-tolerant setups....
> 
> Say, you have two identical machines, one is a mail server the other is
> the www server, and when one of them is down the other does both jobs.
> 
> A few years back I worked for a company which had some Digital Alpha
> servers. Digital had a nice disk tower with an Y cable so both servers
> were able to access the same disks. Are there such products available for
> PCs ?

infortrand RAID's allow fault-tolerant scheme with two or more servers,
but it is a problem to mount the same UFS from different servers ...

u can mount disk RW only for one server, after first server fail,
the second server run fsck and mount disk (or mount disk RO) ...
it is not good, but we use this scheme ...

may be JFS :)

   Alex.

> 
> What do you recommend/use ?
> Anybody using Cisco's local director for example ?
> 
> Best
> 
> Gabor
> 
> 
> 
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