By default, NetVault Backup log window will show the most recent 5000 log messages.
Control the amount of log messages visible by editing a configuration option.
Note that the processing of log messages can be resource intensive. Increasing this value can result in delays while opening the log window.
NetVault Bakcup will automatically remove log entries that exceed a configured age. By default this is 30 days. See SOL79574 for further details.