The platform saves system logs for 30 days by default, and you can manually save the system logs locally.
Login to HCI Navigate to System > System Backup and Restore click 4.2.2 System Log Backup. Select the start time and end time and which node’s log you want to download to local then click the Backup button wait for the system Packing the logs. Then in the pop-up message windows click OK to start downloading the logs. The download file is a zip file.