Go Premium for a chance to win a PS4. Enter to Win


NTP time synchronization -  Domain Controllers Server 2012

Posted on 2013-06-17
Medium Priority
Last Modified: 2013-06-18
Can anyone recommend a cloud based timing solution, to keep our Domain Controllers Server 2012 synchronized.
Question by:techgenious
  • 2
LVL 14

Accepted Solution

frankhelk earned 940 total points
ID: 39253208
I don't know what you mean by "cloud based", but I would recommend "the real thing" - a Windows port of the standard NTP implementation. See here for a list. I usually use the Meinberg port (3rd in the list) from here. If properly configured, NTP works like a charm - silent, precise, stable. Usually keeps your systems in sync with the master by about some 10 milliseconds.

Furthermore I would recommend to use the service at pool.ntp.org for a selection of time servers. Try these time server entries in your ntp.conf:
server 0.pool.ntp.org iburst
server 1.pool.ntp.org iburst
server 2.pool.ntp.org iburst
server 3.pool.ntp.org iburst

Open in new window

Besides of this "worldwide" set of servers there are regional ( "continental", or even more fine grained: "per country") sets of servers, too, i.e. for Europe
server 0.europe.pool.ntp.org iburst
server 1.europe.pool.ntp.org iburst
server 2.europe.pool.ntp.org iburst
server 3.europe.pool.ntp.org iburst

Open in new window

or i.e. for France
server 0.fr.pool.ntp.org iburst
server 1.fr.pool.ntp.org iburst
server 2.fr.pool.ntp.org iburst
server 3.fr.pool.ntp.org iburst

Open in new window

Please read the documentation on http://www.pool.ntp.org for details.

Author Comment

ID: 39253737
can you recommend any HW based NTP devices.
LVL 14

Expert Comment

ID: 39255481
The only thing I've used as dedicated NTP server is the Meinberg LANTIME M300. It gets its time from a external source, i.e. DCF77, GPS etc. (you have to choose in advance ... time source is model dependent) and supplies it via NTP (and other protocols) to the clients. It could use internet time servers as additonal time sources, too, and it allows to group several devices as high availability cluster. This hardware solution is convenient if no connection to the internet is available. Unfortunately it costs twice as much as a cheap desktop PC.  If you prefer this one, get the V6 firmware. I have not tested others, but I find that one OK.

If Internet access is available, I would recommend to put the (small) burden onto one of your machines an get the time from the NTP server pool I've mentioned. Full service for nearly no expenses.

If you prefer a dedicated time server, just buy a cheap PC for this (or use a still working one out of the scrap container - there's no need for a supercomputer to accomlish that task ... anything capable of running at least W2k or Linux would do) and install a NTP service. To save expenses you might use Linux - i.e. openSUSE - which has a complete NTP service installed by default.

BTW: A nice tool for monitoring the time sync state for a buch of of NTP clients is NTPMonitor, which could be found here.

Featured Post

[Webinar] Cloud Security

In this webinar you will learn:

-Why existing firewall and DMZ architectures are not suited for securing cloud applications
-How to make your enterprise “Cloud Ready”, and fix your aging DMZ architecture
-How to transform your enterprise and become a Cloud Enabler

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Restoring deleted objects in Active Directory has been a standard feature in Active Directory for many years, yet some admins may not know what is available.
Having trouble getting your hands on Dynamics 365 Field Service or Project Service trial? Worry No More!!!
This tutorial will walk an individual through the steps necessary to join and promote the first Windows Server 2012 domain controller into an Active Directory environment running on Windows Server 2008. Determine the location of the FSMO roles by lo…
The viewer will learn how to use a discrete random variable to simulate the return on an investment over a period of years, create a Monte Carlo simulation using the discrete random variable, and create a graph to represent the possible returns over…

971 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question