Date: Wed, 24 Apr 2002 08:31:08 -0700 (PDT) From: Tom Samplonius <tom@sdf.com> To: Mark Sergeant <msergeant@looksmart.net> Cc: bv@wjv.com, freebsd-isp@FreeBSD.ORG Subject: Re: HTTP Load Balancing and Availability Solutions Message-ID: <Pine.BSF.4.05.10204240824450.6896-100000@misery.sdf.com> In-Reply-To: <1019656776.38204.17.camel@xyzzy.intranet.snsonline.net>
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On 24 Apr 2002, Mark Sergeant wrote: > 99.999 is less than an hours down time per year which running off one ... I don't get that: 365 days per year x 24 hours per day x 60 minutes per hour = 525,600 minutes per year 525,600 minutes per year x 0.001 percent down = 525.6 minutes per year down I think you might be thinking of 99.9999% reliability, which would be 52.5 minutes per year. Usually, when I hear people talk about 4 nine reliability, they are talking about the decimal portion. I believe banks and telephone companies operate on a 4 nines reliability basis. Tom To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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