When installing the Content Manager for Web 8, you are asked to enter the Content Manager environment ID. This appears to default to Tridion_cm followed by the domain name of your database server (with punctuation removed).
Perhaps this isn't really very important and the generated default is fine, but I'm interested in what might be good practice for choosing a meaningful name. For example, does it help to keep it short? Should I refer to my DTAP environment in the name?