I have a network with the following:
- Windows 2003 (PDC Emulator) (in the process of migrating)
- Windows 2003 DC (same)
- Windows 2008 Hyper-V Host w/ 5 VMs, one VM is a DC, soon to be the PDC Emulator
- Windows 2008 Hyper-V Host w/ 2 VMs, remote site, one VM is a DC
- Windows 2012 Hyper-V Host w/ 3 VMs, remote site, one VM is a DC
Time sync is set up for all VMs. What I am witnessing is that for the DC on #4, the time is off every morning by 1-2 minutes. The other VMs, hosts, and DCs seem to be fine.
The time server for the 2003 DCs is time.windows.com. The time server for the VM hosts is the DC for each site. (I did not configure them specifically. Each seems to have defaulted to that.) The time server on each VM shows as "VM IC Time Synchronization Provider".
Quite simply, what should each machine be for their time servers, and why are the one VM host, and VMs encountering such an offset, while none of the others are?