timetime-synchronizationwindows
I administer multiple Windows servers. One issue I have is that the time gets out of sync, and this becomes noticeable over a week or so.
For example, my app server system time could be different from my database server time.
What can I do to automatically synchronize the timing across multiple servers?
Jeff, I found this article. Might be of some help to you. You might have already read this but I thought it was worth a shot.
HKLM\SYSTEM\CurrentControlSet\Services\W32Time\Config\AnnounceFlagsThis registry entry controls whether the local computer is marked as a reliable time server (which is only possible if the previous registry entry is set to NTP as described above). Change this REG_DWORD value from 10 to 5 here.
UPDATE As per Jeff, best source of reference is http://support.microsoft.com/kb/816042
Best Answer
If the machines are members of an Active Directory domain the time synchronization should happen automatically and you would be best served to investigate why the normal domain time synchronization mechanisms are failing.
If they're not domain members I'd recommend configuring each machine with an NTP time source (such that they're not dependent on each other for time sync). If you've got an on-site NTP server then use it but, if not, something like an "ntp.org" source is probably reasonable. You could get away with something like: