As this is self hosted, it leaves you to deal with all the management of things like alert delivery (e.g. ensuring delivery of e-mails, working with SMS gateway

As this is self hosted, it leaves you to deal with all the management of things like alert delivery (e.g. ensuring delivery of e-mails, working with SMS gateways) and data retention. The MongoDB installation that Amon sets up is not in a replica set nor sharded, so it leaves you to deal with redundancy, failover and scaling. We use MongoDB for Server Density and I can tell you that managing huge quantities of data is not easy.