WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may
require you to reinstall your operating system. Microsoft cannot guarantee that you can solve
problems that result from using Registry Editor incorrectly. Use Registry Editor at your own
risk.
To configure the length of time that online defragmentation runs after the information store maintenance window:
- Start Registry Editor (Regedt32.exe).
- Locate the following key in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersPrivate
- On the Edit menu, click Add Value, and then add the following registry value:
Value Name: OLD Completion Time
Data Type: REG_DWORD
Value: Set the value to the number of seconds that you want to allow an overrun of the information store maintenance window (0 for no overrun, and the default is one hour: 1*60*60 seconds).
- Add this value to the public information store as well in the following key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersPublic
- If you want to override the minimum length of time that online defragmentation runs, add the following value:
Value Name: OLD Minimum RunTime
Data Type: REG_DWORD
Value: Set the value to the minimum number of seconds that you want to let the old process run (the default is fifteen minutes: 15*60 seconds).
- Quit Registry Editor.
NOTE: When the information store maintenance tasks and online defragmentation are complete, there is an opportunity for the cycle to begin again if there is time left in the information store maintenance window. A check is made every fifteen minutes to make sure that the server is in the information store maintenance time frame.