[c-nsp] pop site battery backup recommendations

[Joe Maimon]

Mike wrote:
> Howdy,
>
> This isn't exactly cisco-centric, but it's certainly related operationally.
>
> I operate a county wide isp network and I have about 15 different pops.
> I equip each with APC700/1400's and with XR battery packs, with the goal
> being around 8 hours of runtime in the event of a power failure. I also
> aggressively monitor batteries and have situational awareness regarding
> the self test status, maintenance status, and during ac power failures
> whats up and down and how much runtime the pops have and so forth.
>
> Over the last 8 years I have been doing this, the single greatest source
> of pop site outages, has been the battery backup units themselves. I
> have experienced multiple repeated failures involving the SNMP
> management cards that have:

I would suppose that the best way to work around a UPS being a single 
point of failure would be to use an ATS behind it. Of course, now that 
ATS is the spof.

Everything installable in a pop should ideally come with dual PS.

Joe