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Date: Mon, 25 Aug 1997 23:24:50 -0700 (PDT)
Organization: Atlas Telecom
From: Simon Shapiro <Shimon@i-Connect.Net>
To: "burt f." <burt@focusplus.com>
Subject: RE: ? power outages and file system corruption
Cc: freebsd-hackers@FreeBSD.ORG
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Hi "burt f.";  On 26-Aug-97 you wrote: 
>  
>  
>  Is the only way to protect against power-outage-caused file system
>  corruption to install a UPS?  Someone mentioned to me that Sun
>  (yeah, i know it's Solaris, but i just wanted to know if there was
>  something analogous in FBSD) has some sort of disk/FS caching to
>  protect against this.

In theory, a journaling filesystem will do that.  Veritas is a good name
for these.  The problem with most of these is that a $300 UPS is cheaper
and more reliable.  Most such filesystems are attached to such an increase
in complexity that the most common cause of curruption is a filesystem code
bug.  Even a UPS does not help you then.

Simon