nanog mailing list archives
Re: DC power versus AC power
From: Wayne Bogan <wbogan () InfoAve Net>
Date: Sun, 29 Dec 2002 13:05:59 -0500
For those AC only powered units, you can also purchase an invertor for DC to AC conversion. You would then have the advantages of DC for your AC equipment. This does, however, add the potential of another point of failure such as fuses or breakers in the invertor. ----- Original Message ----- From: "Stephen Sprunk" <ssprunk () cisco com> To: <ipdude () cattle-today com>; <nanog () merit edu> Sent: Sunday, December 29, 2002 1:58 AM Subject: Re: DC power versus AC power
Thus spake ip dude <ipdude () cattle-today com>:Hello NANOG group. I am trying to make a case for using DC power supplies versus AC power supplies for typical IP networking equipment. Is there any published whitepapers detailing this subject? Do you have any suggestions to aide my argument?Most of the argument depends on the facility you're in. Assuming you're asking as an end-customer: DC requires clue from your staff when installing/removing equipment, and this means safety training at a minimum. Power choice also affects your equipment purchasing: DC versions of gear are often priced higher, and
gear
not intended for telcos/ISPs may not have a DC option available at all. OTOH, many colos -- especially ones run by telcos -- don't provide AC UPS. If you want AC UPS in these environments, you'll have to provide your own, which is expensive, bulky, and a maintainance burden. If you're building your own datacenter, please specify that and I'm sure you'll get a whole different discussion :) S
Current thread:
- DC power versus AC power ip dude (Dec 27)
- Re: DC power versus AC power Scott Granados (Dec 27)
- Re: DC power versus AC power jlewis (Dec 28)
- Re: DC power versus AC power Måns Nilsson (Dec 29)
- Re: DC power versus AC power jlewis (Dec 28)
- Re: DC power versus AC power Stephen Sprunk (Dec 28)
- Re: DC power versus AC power Wayne Bogan (Dec 29)
- Re: DC power versus AC power Stephen Sprunk (Dec 29)
- Re: DC power versus AC power Wayne Bogan (Dec 29)
- <Possible follow-ups>
- RE: DC power versus AC power Kuhtz, Christian (Dec 29)
- Re: DC power versus AC power Rubens Kuhl Jr. (Dec 29)
- Re: DC power versus AC power Michael Painter (Dec 29)
- Re: DC power versus AC power David Lesher (Dec 29)
- Re: DC power versus AC power Scott Granados (Dec 29)
- Re: DC power versus AC power Charles Sprickman (Dec 29)
- Re: DC power versus AC power David Lesher (Dec 29)
- Re: DC power versus AC power Scott Granados (Dec 29)
- Re: DC power versus AC power Barney Wolff (Dec 29)
- Re: DC power versus AC power Scott Granados (Dec 27)