Now that we have separate ILM policies for each type of monitor (elastic/uptime#462), monitors running through Elastic Agent that make use of datastreams (which includes the Synthetics Service, and self-managed nodes elastic/uptime#441), we should document how users can customise these to suit their requirements (e.g longer or shorter retentions based on the kind of data).

Considerations:

• Where should the entry point be for this documentation?
  • Monitor Management is a temporary UI, so perhaps we should show how to configure these for PUSH or Synthetics UI based monitors, or those running from self-managed nodes
  • The existing Synthetics Integration will be deprecated and removed, in favour of the self-managed nodes, so probably not worth documenting that workflow
  • Perhaps the existing ILM / policy docs are the best place to highlight this (with a link from the Synthetics docs)
• Docs should include some indication of how the different types of data for different monitor types have a different storage profile (e.g. we know that the network data can take up the most space, and then screenshots)