Martin A. Brooks
martin at antibodymx.net
Mon Oct 29 16:39:56 GMT 2007
Alistair McGlinchy wrote:
> You've just hit one of my favourite niggles. Why do you want redundant
> networks and sites AND redundant memory, processors and power supplies
> within a site? [*] This a waste of money, you end up spending 4 times the
> money for only N/2 resilience. If you want extra resilience, add another
> site or buy components with better MTBF.
I disagree. A second power supply for one of our mail filtering nodes
costs about £100. Another server costs about £2000.
We're spread across 4 different physical locations, none of which I want
to visit because a server has been downed for want of a working PSU.
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