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From: calton@cs.columbia.edu (Calton Pu)
Newsgroups: comp.os.research
Subject: Re: Why machines crash [New report]
Message-ID: <4794@darkstar.ucsc.edu>
Date: 29 Jun 90 13:54:03 GMT
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The paper cited:

>> Jim Gray, "Why Do Computers Stop and What Can Be Done About it?"
>> Tandem Tech Report 85.7, June '85, PN87614.

appeared in the Proceedings of the Fifth Symposium on Reliability in
Distributed Software and Database Systems, pages 3-13, Los Angeles,
1986.  You can order it from IEEE Computer Society Press (Order Number
690).

That paper was good.  But Jim has done a followup!  The new one is:

Jim Gray, "A Census of Tandem System Availability Between 1985 and 1990"
Tandem Tech Report 90.1, January 1990, PN33579.

The new paper is supposed to appear in a special issue of IEEE
Transactions on Reliability.  The major discovery is summarized by two
sentences from the abstract.

	"[The census] indicates that now (1989) software is the
	majority source of reported system outages (62%), followed by
	system operations (15%).  This is a dramatic shift from the
	statistics in 1985." 

Probably the net readers should await the special issue of IEEE
Transactions on Reliability.  

		-Calton-

% Rob VanGeen noted you can:
%
% Contact Jane Differding, Tandem Computers Inc., Corporate Information Center, 
% 10400 N. Tantau Ave., Cupertino, CA, 95014-0708.  Voice: (408)285-3155 
% FAX: (408)285-3232.