Comments on: What is High Availability? When do you need it? How do you create it and how do you measure it? http://siliconpizza.com/blog/2008/06/02/what-is-high-availability-when-do-you-need-it-how-do-you-create-it-and-how-do-you-measure-it/ I'll have a slice of that Sat, 10 Oct 2009 16:24:26 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Phil Broughton http://siliconpizza.com/blog/2008/06/02/what-is-high-availability-when-do-you-need-it-how-do-you-create-it-and-how-do-you-measure-it/comment-page-1/#comment-547 Phil Broughton Mon, 02 Jun 2008 19:08:18 +0000 http://siliconpizza.com/blog/2008/06/02/what-is-high-availability-when-do-you-need-it-how-do-you-create-it-and-how-do-you-measure-it/#comment-547 HA is something alledged to be always in service (define service!) You need it when critical things like financial transactions are half way through and you cannot afford to lose a customer by not completing the order or generally p****ng them off because the transaction got lost of failed in flight. You create it with lots of cash to buy redundant kit that is just waiting in the wings to jump in and rescue the failing device (or software program) You measure it via transaction replays (beacons/pings) or by the number of complaints or actually lost business. Thats my take on it HA is something alledged to be always in service (define service!)
You need it when critical things like financial transactions are half way through and you cannot afford to lose a customer by not completing the order or generally p****ng them off because the transaction got lost of failed in flight.
You create it with lots of cash to buy redundant kit that is just waiting in the wings to jump in and rescue the failing device (or software program)
You measure it via transaction replays (beacons/pings) or by the number of complaints or actually lost business.

Thats my take on it

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