NTP question

[Mehmet Akcin <mehmet () akcin net>]

hey there Nanog,

I am trying to buy a GPS based NTP server like this one

https://timemachinescorp.com/product/gps-time-server-tm1000a/

but I will be placing this inside a data center, do these need an actual
view of a sky to be able to get signal or will they work fine inside a data
center building? if you have any other hardware requirements to be able to
provide stable time service for hundreds of customers, please let me know.

mehmet