[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Puerto Rico just lost internet?
- Subject: Puerto Rico just lost internet?
- From: sean at donelan.com (Sean Donelan)
- Date: Wed, 20 Sep 2017 16:36:53 -0400 (EDT)
- In-reply-to: <CA+M5dWbz5HKoEtX=bO3M7eQcXnxyyRaNqOm_QA0dg=T6bG3geA@mail.gmail.com>
- References: <CA+M5dWYHGC72j6L=p+eR+KBH1ekA01e0GEaxE4+3X9gpSgiWdQ@mail.gmail.com> <[email protected]> <[email protected]> <CA+LTh5Xrmgk-AO=5WdURysEbb46ou9SjqSpME5PrARr3=n2p-g@mail.gmail.com> <CAB2RJyjxOTFDAc1EvWX1LbkOWVNCDEwvkN4Q509gR-qy2Ghjig@mail.gmail.com> <CA+M5dWbz5HKoEtX=bO3M7eQcXnxyyRaNqOm_QA0dg=T6bG3geA@mail.gmail.com>
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