Scan Engine is easy to configure but...
The InsightVM scan engine is easy to install and configure with the security console. However, after a few months of regular scans the scan engine EBS volume is completely filled. This wouldn't be a problem if the scan engine allowed ssh access into it so that we can re-size the EBS volume correctly. Instead you have to delete and re-setup the scan engine with a bigger EBS every so often.
There is also no means to delete older logs from the scan engine in an automated fashion which is the main cause of this issue.