To keep the log files from becoming too large, you can specify when to delete logs automatically on the Trend Micro NAS Security™ device.
Select Logs > Automatic Delete.
Evaluate the number of logs currently on your server. View the Stored Logs table, and note the number of logs for each type.
Select Keep logs for ___ days, and specify a value between 1 and 1000.
Click Save. Logs older than the specified number of days are purged.