[Catalyst] FW: Clustering catalyst apps

Johan Lindström johanl at DarSerMan.com
Mon May 8 23:12:28 CEST 2006

At 22:14 2006-05-08, Dave C wrote:
>The key to offer the "five nines" availabilty (99.999%, or under 5
>minutes a year) is to examine faults in every aspect, including
>application, hardware, network, facility, and OS to identify single
>points of failure.

If you go that far, don't forget to make sure your two independent ISPs 
really are independent and don't buy their upstream bandwidth from the same 
provider :)

That happened to us a couple of years ago; the upstream provider had some 
downtime and we were mightily upset.


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