• Subject: Re: microsoft 99.9999
  • From: booth@xxxxxxxxxxxx
  • Date: Thu, 25 Jan 2001 01:56:59 GMT

Leif,  I believe the ad is "five 9s"  or  99.999%
_______________________
Booth Martin
Booth@MartinVT.com
http://www.MartinVT.com
_______________________




"Leif Svalgaard" <leif@leif.org>
Sent by: owner-midrange-l@midrange.com
01/24/2001 03:03 PM
Please respond to MIDRANGE-L

 
        To:     <MIDRANGE-L@midrange.com>
        cc: 
        Subject:        Re: microsoft 99.9999

From: Joe Pluta <joepluta@plutabrothers.com>
> Has anybody thought to do the math?  99.9999% uptime means a total of
THIRTY SECONDS of unscheduled downtime per year (actually, 31 and change).

The 99.9999% has a special marketing significance. It is a failure rate of 
1
in 1,000,000,
which is better than 3.4 in 1,000,000. what is this mysterious 3.4? It is 
the
six sigma
level. Search on Google for "six sigma".So if you are at the 99.9999% 
level
you are
better than six sigma (the ultimate mark of quality).  So there is great
incentive to
claim to be better than six sigma, whether you are or not.



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