Outside the datacenter is where DC power really shines in my opinion. Inside the DC, everything is AC now and probably for the best.
We never came up with a modular standard for -48VDC. Perhaps that could have changed things. But it sure is nice having 72hrs of battery run time in the field/edge - although those are becoming mini data centers themselves and are in turn also slowly going AC. Ms. Lady Benjamin PD Cannon of Glencoe, ASCE 6x7 Networks & 6x7 Telecom, LLC CEO l...@6by7.net "The only fully end-to-end encrypted global telecommunications company in the world.” FCC License KJ6FJJ Sent from my iPhone via RFC1149. > On Oct 20, 2021, at 10:19 PM, Mark Tinka <mark@tinka.africa> wrote: > > > >> On 10/20/21 20:37, Lady Benjamin Cannon of Glencoe, ASCE wrote: >> >> -48VDC power is still the best. > > I really envy folk that love DC for networking gear :-). > > Work in 2007 was an all-DC network. I rebuilt it into AC, considering the ISP > also owned the data centre (most of whose customers bought AC). The space we > freed up and the ease of deployment was night & day. > > Currently, we obviously need DC for the terrestrial Transport and wet plants > (because that's just how classic telco rolls), but I also switched all > IP/MPLS gear to AC soon as I arrived. Heck, even the Arbor (now Netscout) > gear, as well as the HP server rack, was loaded with DC power supplies. Those > things just had to go. > > There is an avenue of pleasure in not having to spend inordinate amounts of > time adding major electrical planning to deploying/decommissioning a router, > switch or server. > > But yeah, I know the AC vs. DC discussion can become a rat hole. > > I'm aware of data centre operators now providing DC as an option for their > expansion projects, when they previously had it as the norm, FWIW. > > Mark.
