Hi,
You can adjust operation log dump parameter values as required. According to the settings, the system periodically dumps operation logs to the specified file dump path and deletes the logs from the database, saving database space.
When the number of operation logs in the system reaches 100,000, the system automatically dumps the logs.
Dumped operation logs will not be displayed in the System > System Monitor > Log Query > System Logs. To view the dumped operation logs, you can download the log dump file and open it using a text editing tool.
Please find the below link
https://support.huawei.com/enterprise/en/doc/EDOC1100037190/771cb217/data-storage-policy