On Wed, 1 Apr 2009, Greg Smith wrote:
> 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.
Most decent servers have dual power supplies, and they should really be
connected to two independent UPS units. You can test them one by one
without much risk of bringing down your server.
Matthew
--
Okay, I'm weird! But I'm saving up to be eccentric.