[195901] in North American Network Operators' Group
Re: Puerto Rico just lost internet?
daemon@ATHENA.MIT.EDU (Sean Donelan)
Fri Sep 22 04:22:49 2017
X-Original-To: nanog@nanog.org
Date: Wed, 20 Sep 2017 16:36:53 -0400 (EDT)
From: Sean Donelan <sean@donelan.com>
To: "nanog@nanog.org" <nanog@nanog.org>
In-Reply-To: <CA+M5dWbz5HKoEtX=bO3M7eQcXnxyyRaNqOm_QA0dg=T6bG3geA@mail.gmail.com>
Errors-To: nanog-bounces@nanog.org
On Wed, 20 Sep 2017, Javier J wrote:
> How long usually till generators at cell sites run out of juice?
Rough, every provider is different, backup power hierarchy:
Neighborhood pole boxes: 1-4 hours, batteries only. May be re-charged
with portable generators when safe to access area. There is likely severe
physical damage to neighborhood lines.
Cell towers: 8-12 hours battery. Some, not all, towers have a natural gas
generator or 24 hours diesel generator
Central offices and cable headends: 8-12 hours battery, 1-3 days diesel
generators. Core, tandem, and hub sites usually have more backup.
Major colocation data centers: <1 hour battery, 3-14 days diesel
generators
Submarine cable landing points and satellite control stations: 24 hours
battery, 30 days diesel generators
