Historical data is collected for the previous 30 days by default. However you can specify any number of days between 1 and 60.

Data collection begins at the time the domain is added to Operational Insights. Roughly 24 hours worth of data is collected every hour, meaning that approximately 30 hours are required to populate Operational Insights with data for the prior month.

Historical data collection is enabled by default. Clear the

Collect Historical Data

checkbox to disable historical data collection.