SharePoint Audit Log Purging and Archival

SharePoint provides an automatic trimming feature to purge audit entries when they reach a certain age and SharePoint can automatically export those events to the Excel based reports found under the "View Auditing Reports" page in Site Collection Administration.

However, the audit entries effective remain in the content database where they continue to occupy expensive SQL server storage and are vulnerable to tampering. This is one of the reasons I created LOGbinder for SharePoint.



Additional Resources
    Purging & Archival