[c-nsp] pop site battery backup recommendations

[Seth Mattinen]

On 7/22/10 10:11 PM, Joe Maimon wrote:
> 
> 
> 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.
> 

I've had an ATS short out on me twice, so now I just stick with
parallel/redundant UPS systems.

~Seth