Time synchronization

To keep the time on i5/OS™ and the Windows environment synchronized, do the following steps:

  1. Select *YES for synchronize date and time in the Install Windows server (INSWNTSVR) command or the CHGNWSD command. Selecting *YES will synchronize the time between i5/OS and the integrated Windows server every 30 minutes. Selecting *NO will synchronize the time only when the server is started.
  2. Ensure that the iSeries™ time, date, and time zone are correct. Once these values are set they will automatically update themselves every six months for daylight savings time adjustments. The QTIMZON system value replaces the need to manually change the QUTCOFFSET system value twice a year.
  3. At the Windows console, click Control Panel —> Date/Time, select the Time Zone tab and select your time zone from the drop-down list.
  4. Select the Automatically adjust clock for daylight savings changes check-box. Then click OK.

If you have problems with time synchronization, check the i5/OS system value for LOCALE to make sure it is set properly.

Note:
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Time synchronization should be set to *NO for Windows active domain servers and domain member servers. Since Windows Active Directory has its own time synchronization facility, setting time synchronization to *YES will cause a conflict.
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