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Vikas Kamat
 Vikas Kamat is a programmer- entrepreneur living in Birmingham AL. This blog is a complex mix of Indian culture, life in southern USA, computer sciences, and sports. Opinions are his own.
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Computing, Libraries, Tennis, India & other interests of Vikas Kamat

'

99.9 Uptime Durable Link to this BLOG
What 99.9% Uptime Really Means

It has become fashionable to claim over 99.9% reliability, especially in the Microsoft camp. Web hosting companies, application servers, database servers, why, even Microsoft and friends (Compaq, Dell) have been touting this number as if it's a big deal.

Consider this:

99.9% uptime amounts to 8.766 hours of downtime a year. With an average reboot of Windows NT/2000 servers taking 5 minutes, this amounts to 525 unscheduled reboots per year, which amounts to over 10 per week -- more than once a day! Holy cow!!

Derived from Competing with Linux

FYI: I run both Unix and NT for different tasks. The old Kamat.com server running Unix (BSD) never needed a reboot in 14 months of its use. The new Kamat.com server running Linux since November of 2001 has not been down even for a second.

So, achieving 99.9% uptime with Microsoft Windows is very easy. Just reboot the server, about twice a day.

See Also:

• Unix Vs. NT (in the context of a Web application)

(Comments Disabled for Now. Sorry!)First Written: Friday, January 4, 2002
Last Modified: 1/4/2002

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