nanog mailing list archives
Re: DC Power choices (was Re: Network visibility)
From: Bryan Fields <Bryan () bryanfields net>
Date: Sat, 23 Oct 2021 23:27:53 -0400
On 10/22/21 1:13 AM, Jay R. Ashworth wrote:
It was, in fact, pretty impressive to look at. But I was a little worried about the loading on the building frame. :-) And while I think there might be advantages in running power supplies in gear at -48, I'd want to rectify it in the cage, preferably from 480/3ph.
High voltage DC (400v) has all the advantages of DC with none of the lossy drawbacks of -48v. What's nice is most every AC PSU now will run off it with minor modifications, so it's trivial for vendors to support. Nokia and Juniper even do it in the same AD/HVDC supply. I like DC, it's much simpler, but it's a lower volume product. One advantage to AC is I can call any electrocution and they can run a cable in a pinch for me. DC, even though it's the same physics, is harder to find experienced tech to work with. -- Bryan Fields 727-409-1194 - Voice http://bryanfields.net
Current thread:
- Re: Network visibility, (continued)
- Re: Network visibility Lady Benjamin Cannon of Glencoe, ASCE (Oct 20)
- Re: Network visibility Brian Johnson (Oct 20)
- Re: Network visibility Mark Tinka (Oct 20)
- Re: Network visibility Brian Johnson (Oct 21)
- Re: Network visibility Mark Tinka (Oct 21)
- Re: Network visibility Lady Benjamin Cannon of Glencoe, ASCE (Oct 20)
- Re: Network visibility Mark Tinka (Oct 20)
- Re: Network visibility Lady Benjamin Cannon of Glencoe, ASCE (Oct 21)
- Re: Network visibility Owen DeLong via NANOG (Oct 21)
- Re: Network visibility Mark Tinka (Oct 21)
- DC Power choices (was Re: Network visibility) Jay R. Ashworth (Oct 21)
- Re: DC Power choices (was Re: Network visibility) Bryan Fields (Oct 23)