[ntp:questions] Number of Stratum 1 & Stratum 2 Peers

Jan Ceuleers jan.ceuleers at computer.org
Wed Dec 3 18:24:11 UTC 2014

On 12/03/2014 02:58 PM, Brian Utterback wrote:
> I still think that it takes four to
> guarantee a majority but I don't have proof of that. Someday I will
> spend some time to either prove or disprove it, but alas, time is
> something I don't generally have extra to spend. But you are better off
> with one than two from an operational standpoint.

It takes three servers *at all times* to enable clients to use majority
voting. So if you want to guard against a single failure (i.e. not a
single falseticker, a single server that goes offline), then you need four.

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