I like how fast it updates once every 5 minutes so you do not have problems when your server goes down sometimes its really slow but i think for security reasons maybe this could get better? You don't need more than 1 instance running if all other are offline/down then nothing happens also no notifications at least give me some kind off notification system as well! If anyone wants real time monitoring without having dedicated hardware solution check out Securtrail's free tier which gives enough information about what needs attention now while others in production mode will go unnoticed till something bad happenes.