Select No limit to avoid limiting the bandwidth used for discovery.

Select An average of to limit the bandwidth used for discovery, then select the average (1-9999 Mbps) to set as the limit.

To scan a specific number of records, select Segment scan to. The specified number of records from the table (chosen randomly) will be scanned, and not the entire table.

Otherwise, select Scan all records of each table. This can affect performance.