[j-nsp] ACX5448 & ACX710 - Update!

[Mark Tinka]

On 30/Jul/20 10:19, Baldur Norddahl wrote:

> Not going to claim what is or is not a small issue for anyone here.
> Just saying that one rack unit external power supplies are plentiful
> and cheap. Like this one (just the first result on Google):
>
> https://www.simplypowersupply.com/Rack-Mount-Power-Supply/RCP-1000-48-Meanwell-48Vdc-1000W-Rack-Mount-Power-Supply.aspx
>
>
> We only have two datacentre locations and for those two location I
> would consider getting something like that. But I am probably going to
> go with the ACX5448 anyway because I could find a use for the extra
> 100G ports.
>
> The 20 locations are at the incumbents CO locations where 48 volt DC
> with battery and sometimes generator backup is what you get. You could
> get 230V AC at these locations but it would be without backup.
>
> In the future I might also get some locations in street cabinets,
> where I would put a standard DC UPS of the kind where you have a
> couple 12V batteries in series to make up the 48 volt, the equipment
> connected directly to the battery bank and a charger continuously
> charging the batteries. This is very cheap and extremely stable. The
> ACX710 device is environmentally hardened and clearly made for exactly
> that kind of deployment.

We considered all possible powering options before deciding that the
ACX710 is a show-stopper.

Rectifiers. UPS's. Solar. Solar + batteries. The works.

Over hundreds of sites dealing with thousands of devices, it's not going
to work. We'll spend too much time and money maintaining power, it
doesn't make sense.


>
> I see that ACX710 is not as much made for a specific customer as it is
> NOT made for a group of customers: the datacenter customers are
> supposed to buy the more expensive ACX5448. But said datacenter
> customers can spend one rack unit on an external DC powersupply and go
> with it anyway.

The ACX710 was clearly built for one or two mobile network operators.
There is no doubt about that.

Juniper have been making boxes that support both AC and DC for yonks.
Hardened and regular. What's so special about the ACX710? In 2020?

Mark.