This threshold is designed to alert you to a potential performance problem in the Flow Monitor caused by a large quantity of flow data. This can happen if your flow-enabled sources are sending large numbers of flows to you, or you are keeping flow data for long periods of time. As more data is kept in Flow Monitor's databases, you may encounter performance problems, or even timeouts, when loading Flow Monitor reports. Consider reducing the Report Data settings for Flow Monitor on the Flow Monitor Settings dialog (click the Flow Monitor tab, then click Settings), or even moving to a SQL Server with greater resource capacity. For more information, see the WhatsUp Gold Database Migration and Management Guide on the WhatsUp Gold web site.