Re: UPS trouble again. Mainly just venting, but responses are welcome.

On Thu, Mar 5, 2009 at 19:20, James Lampert <jamesl@xxxxxxxxxxxxxxxxx> wrote:

The boss is again losing confidence in the whole UPS concept (not
surprising, since our UPSs have, over the past decade, collectively
caused more crashes than they've prevented)

Perfectly normal if you have a reasonably stable power grid.

We recommend our customers to use redundant power supplies in all
servers, and connect each of the power supplies to a different UPS.
Oh, and make sure that those UPSs never run above 35-40% load, as in
the case of an UPS failure the load on it will double.

We've had our up-and-downs with the Powerware UPSs (several
replacement at customers), but in general they've worked without any
major issues such as those described by you.