This property specifies how often Microsoft® Windows NT® should create a new log file. If this property is set to 0, a new file will be created when the maximum size designated in LogFileTruncateSize is reached. If this property is set at 1, 2, or 3, a new log file will be created daily, weekly, or monthly, respectively.
The following table describes this property:
| Data type | Long |
| Default value | 1 (Create new log file daily) |
| Default inheritance | Inheritable |
Accessible by IIS Admin Objects:
| IIsFtpService | IIsFtpServer | IIsWebService | IIsWebServer |