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Naming convention for computers

It seems an important and difficult dilemma for me how to name network hosts (routers, servers (while a server can be a router and host diverse services at the same time), virtual machines (while they host important services and can migrate), workstations and notebooks (using pc-username is not the best idea as users may change), printers & MFUs, surveillance IP cameras, etc).

Are there known and accepted best practices for this task?

Excuse me if there already was a similar question here (I think it probably was), I haven't found it.