On 6/14/21 8:58 AM, Jay R. Ashworth via Outages wrote:
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From: "Matthew Huff via Outages" <outages@outages.org> Of course.
Like I stated in the original email, we don’t use NIST for time sync. We actually have a GPS and a PTP feed.
WE MUST, HOWEVER, VALIDATE OUR SYSTEM TIMES VERSUS THE INTERNET NIST SERVERS VIA FINRA REGULATIONS
Yes, it is stupid
No, it isn’t a good idea
In prior job, I did work for a datacenter. Datacenter had both GPS and NTP. We monitored drift. We saw drift. At first, I was dumbfounded that our NTP pool could be drifting. Then I traced it back. Found out that there was a misconfiguration on the GPS Receiver side instead. Lesson learned: run both, track both, use each to confirm the other. Set one as priority over the other.
FINRA specifically state that we MUST run a comparison and log any differences between our current time and Internet NIST servers. I have challenged them on this a number of times, but with no luck.
if we don’t want to get fined and prevented from trading, we have to follow FINRA regulations..