On Wed, 1 Apr 2009, Scott Marlowe wrote:
> Meteor strike is far less likely than a power surge taking out a UPS.
I average having a system go down during a power outage because the UPS it
was attached to wasn't working right anymore about once every five years.
And I don't usually manage that many systems.
The only real way to know if a UPS is working right is to actually detach
power and confirm the battery still works, which is downtime nobody ever
feels is warranted for a production system. Then, one day the power dies,
the UPS battery doesn't work to spec anymore, and you're done.
Of course, I have a BBC controller in my home desktop, so that gives you
an idea where I'm at as far as paranoia here goes.
--
* Greg Smith gsmith@gregsmith.com http://www.gregsmith.com Baltimore, MD