[j-nsp] MX960 PEMs and 3 phase power

[Mark Tinka]

On 3/22/23 17:27, Tom Storey via juniper-nsp wrote:

> Hi all.
>
> I had this idea in my head that MX960 power supplies should not be split
> across phases, but I cant find anything in any documentation that says that.
>
> Can anyone comment on whether multiple phases per PEM are supported, or
> whether its even a reasonable idea to put into practice?
>
> My thought is one PEM on one phase, such that if that phase drops, you drop
> that PEM entirely. Or is it worthwhile spreading across phases to keep even
> half of a PEM alive and supplying the chassis?

I can't think of any plausible reason why this would not work, but it 
sounds awfully complicated.

If you are in a typical data centre, all your power is going to come 
from at least one UPS anyway, maybe even two. So not sure you need to 
worry about this.

Mark.