By scheduling individual updates, you can customize how often Microsoft Office SharePoint Portal Server 2003 updates the information in an individual content source separately from how often SharePoint Portal Server updates a content index.
Note If you create or edit a search schedule by using this method, the content area, content source, and update type are all selected by default on the Edit Search Schedule page.
By default, if you select Daily and want to repeat the task, the content source is updated starting at 12 A.M. every 5 minutes for 24 hours (1440 minutes), and the update repeats every day.
For example, you can schedule a crawl that runs every five minutes every day during business hours. To do this, schedule a daily update starting at 9:00 A.M. Select the Repeat task check box, specify a Task interval of 5 minutes, specify a Task duration of 480 minutes (8 hours), and specify a Schedule interval of 1 day. The crawl runs every day every 5 minutes between 9 A.M. and 5 P.M.
By default, if you select Weekly and want to repeat the task, the content source is updated starting at 12 A.M. every 5 minutes for 24 hours (1440 minutes), and the update repeats on the day of the week on which you create the schedule.