Hosting again

[Martin A. Brooks]

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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