If an external server no longer requires protection, you can manually remove this server from protected assets in the Security Center console. After the server is removed from protected assets, the server is no longer protected by Security Center. You cannot view data related to the server in the Security Center console, such as alerts, vulnerabilities, and attack information.
If you have stopped or uninstalled the Security Center agent but have not removed the server, you can still view the server information in the Security Center console.
Remove an external server from protected assets
Log on to the Security Center console. On the Assets page, right-click an external server and select Unbind. After you unbind the server, it is removed from the protected assets of Security Center.
Release an ECS instance
If your Security Center service has expired, but the ECS instance is not released, all your Security Center instances will be automatically released seven days later.