Maybe an unpopular opinion: but the two most important jobs of a system administrator is to make himself needless (for example through automation and increasing reliability of the systems he builds and maintains) and replaceable (by creating good documentation).

By nielsk

I am a sysadmin with a background in Japanese Science and economics. Thus my topics are computers, Japan and economics. My favorite past times are pen&paper-role playing games and old video games.

With a couple of friends I also podcast about retro video games in German: Retrozirkel