nanog mailing list archives
Re: NTP question
From: William Herrin <bill () herrin us>
Date: Wed, 1 May 2019 17:39:09 -0700
On Wed, May 1, 2019 at 12:23 PM Mehmet Akcin <mehmet () akcin net> wrote:
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.
You buy a powered GPS antenna for it. Which antenna depends on the cable length and type. The amplifier in the antenna amplifies the signal just enough to overcome the cable loss between the antenna and the receiver. Nice thick cables lose less signal. Dinky thin ones are easier to work with. You sure you need a GPS NTP server? You understand that if you do, you need two for reliability right, and probably at geographically diverse locations? If you're not on an air-gapped network, consider syncing a couple head-end NTP servers against tick and tock (.usno.navy.mil, the naval observatory) and not worrying about it. One less piece of equipment to manage, update, secure, etc. Regards, Bill Herrin -- William Herrin ................ herrin () dirtside com bill () herrin us Dirtside Systems ......... Web: <http://www.dirtside.com/>
Current thread:
- Re: NTP question, (continued)
- Re: NTP question Mel Beckman (May 01)
- Re: NTP question Gary E. Miller (May 01)
- Re: NTP question Mel Beckman (May 01)
- Re: NTP question William Herrin (May 02)
- Re: NTP question Mel Beckman (May 02)
- Re: NTP question Seth Mattinen (May 03)
- Re: NTP question william manning (May 03)
- Re: NTP question Eric S. Raymond (May 06)
- Re: NTP question Valdis Klētnieks (May 01)
- Re: NTP question Chris Adams (May 01)
- Re: NTP question Harlan Stenn (May 01)
- Re: NTP question James R Cutler (May 01)
- Re: NTP question Mike Hammett (May 01)
- Re: NTP Question Mel Beckman (May 01)
- Re: NTP Question Harlan Stenn (May 01)
- Re: NTP question Mel Beckman (May 02)