Hi, A couple of little things; In a Windows Active Directory domain the DC holding the PDCe FSMO role become the top of the time sync hierarchy. It’s up to you to configure the PDCe FSMO role holder to sync to your preferred time source (I think time.windows.com is the default though).
The data is synchronised using NTP between domain members. The Hyper-V thing mentioned is a problem with all virtualisation products, as the virtualisation layer is presenting a virtual CPU which doesn’t have accurate ticks. Either disable time sync with the host, or make sure that the host has accurate time. There’s a very detailed article on how Windows time sync works here: http://technet.microsoft.com/en-us/library/cc773013(WS.10).aspx Cheers Ken From: [email protected] [mailto:[email protected]] On Behalf Of David Connors Sent: Monday, 4 October 2010 9:03 AM To: ozDotNet Subject: Re: [OT] Time sync on my domain On 4 October 2010 10:25, Greg Keogh <[email protected]<mailto:[email protected]>> wrote: I also *thought* that the domain controller would sync to an external server, like time.windows.com<http://time.windows.com>, which I can see in the registry for the W32Time service. But I guess it’s not doing that. Not by default, no. All computers on a domain sync via some RPC mechanism that is NOT SNTP. I’m still web searching this subject and getting lots of confusing advice. Asking network admins, is there some simple trick I can pull to make the domain controller sync to the external source? w32tm.exe is the utility you to configure time sync stuff on Windows (SNTP and otherwise). I can't remember the exact procedure but I do recall it is a complete pain in the 4rse. Start with the args for w32tm.exe first and go from there. -- David Connors | [email protected]<mailto:[email protected]> | www.codify.com<http://www.codify.com> Software Engineer Codify Pty Ltd Phone: +61 (7) 3210 6268 | Facsimile: +61 (7) 3210 6269 | Mobile: +61 417 189 363 V-Card: https://www.codify.com/cards/davidconnors Address Info: https://www.codify.com/contact
