[ntp:questions] Geographical diversity of Stratum 1 servers

Jason Rabel jason at extremeoverclocking.com
Wed Feb 13 17:02:36 UTC 2008


Are both your current clocks using the same GPS antenna? If so, there is a
common point of failure right there.

If you put a 3rd clock w/3rd antenna at a different location you can do some
interesting measurements between the 3.

GPS is going to give you the most accurate / stable time (assuming you don't
have interference). WWVB & LORAN-C are alternatives to GPS... But unless
your location prevents the use of GPS is would still be the preferred time
source.

If you ever want to get rid of the Tymserve, I'll take it! :)


> Looking for a reference on geographical diversity of Stratum 1 servers
(GPS 
> appliances, in this case).  We have two clocks now (an old Datum TymServ 
> with a Symetricom sticker) and another unknown brand.  We'd like to add a 
> third at a completely different facility a mile or more away.
> 
> What, other than the business continuity angle can I use?  I'm assuming it

> would be better to have the clocks separated from a GPS perspective, too.




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