What QRadar setting determines how long the asset data is retained before being purged?

The setting that determines how long asset data is retained before being purged is the Data Retention Policy. This policy governs the duration for which various types of data, including asset data, are stored within QRadar. By establishing a retention policy, organizations can manage their data storage effectively, complying with legal and regulatory requirements while also optimizing system performance.

The Payload Index Retention specifically pertains to the retention time for indexed payload data associated with raw flow data or events, which is not the focus in this context. Similarly, while Event Retention Policy and Flow Retention Policy focus on the particular retention times for events and flows respectively, they do not cover asset data retention. Each of these policies serves a distinct purpose within QRadar, underscoring the importance of understanding their specific functions when managing data retention strategies.