Just moved roles to 2012r2 DC. Do I still need to set external time server?

[edutech4schools]

About 5 years ago when I installed 2008r2 and migrated the roles and need to do something that made the dc update its time from an external source.

 

Having just installed a 2012r2 server and migrated the roles a few of the steps that I needed to do for my 2008r2 migration are no longer needed such as domain prep etc and I wondered if I still needed to worry about the time server on my new 2012r2 DC.

 

Hope that makes sense.

[Steve21]

We still link externally, especially as tested it on HyperV as it was missing the time by 15 minutes (overtime).

 

Steve

[edutech4schools]

I issued the following commands to update the new 2012r2 DC

 

w32tm.exe /config /manualpeerlist:”0.uk.pool.ntp.org 1.uk.pool.ntp.org 2.uk.pool.ntp.org 3.uk.pool.ntp.org” /syncfromflags:manual /reliable:YES /update

w32tm.exe /config /update

Restart-Service w32time

The time updated OK on my new 2012r2DC

 

I am trying to get my old 2008r2 DC (which did get it's time from an external time server) to drop it's settings and get it's time from my new DC Server. I am using the following command but the times are not the same on my old and new servers.

w32tm /resync /nowait /rediscovernet stop w32time

net start w32tim

 

Any thoughts? Does everything I have done look OK?

[edutech4schools]

Having real issues with this. The time difference between the new server and old server is 5 mins.

 

Even if I try to set the old DC to the same external Time service as the new DC it still lists our old external time server and not our new one. It does not want to change it's external time server for some reason or use our new DC for its time. WHY?

[Koldov]

Did a similar thing a while ago and also once quite a long time ago!

 

http://www.edugeek.net/forums/windows-server-2000-2003/105868-server-time-issue.html

 

I seem to remember some registry and possibly GPO setting shenanigans...

 

Kol.

[Steve21]

These virtual at all or all physical?

 

As the HOST times will override the local settings unless you've modified that.

 

Steve

[edutech4schools]

These virtual at all or all physical?

 

I was just coming back to say that the new DC is Virtual and disabling host time sync has fixed the time difference.

 

Thanks to @Steve21

[Steve21]

I was just coming back to say that the new DC is Virtual and disabling host time sync has fixed the time difference.

 

Thanks to @Steve21

 

The other thing I found easier was to then set the HOST to go external (or to your DC if you want) so all the other hosted machines pick the right time too without need for GPO etc.

 

Steve