In our SBS 2003 to SBS 2008 Migration Guide (previous blog post) one of the source SBS 2003 server preparation steps is to make sure the time service is correctly synchronized with an outside time source.
From the Migration Guide (currently at Step 14):
- Run the server time setup step.
- w32tm /config /syncfromflags:domhier /reliable:no /update [Enter]
- net stop w32time [Enter]
- net start w32time [Enter]
When booting up the SBS 2008 box for the first time, it is also critical to verify that the time setting in the server hardware’s BIOS is close to the source SBS 2003 server’s time as well.
There are so many problems that can arise and kill the migration process if the two server’s timing is out by more than 5 minutes or the source SBS 2003 server has a malfunctioning or not functioning time service.
Also, make sure to run the SBS 2003 Best Practices Analyzer!
Microsoft Small Business Specialists
Co-Author: SBS 2008 Blueprint Book