one more "9" My calculator says that 3.16 sec per year (365.25 days) is an
up percent of 99.99990

73 Mac N8TT - back from Perry

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J. Mc Laughlin; Michigan U.S.A.
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"Ben Jackson" wrote in message
...
On 2005-08-02, Tom Ring wrote:

In my current business 7 nines would mean roughly 3.16 seconds. Can you
tell me why?

That's how much downtime you get each year if you have 99.9999% uptime.
Of course that's *unplanned* downtime. ;-)

--
Ben Jackson

http://www.ben.com/