Technology changes faster than many of us can keep up with it. New paradigms like software-defined networks and the cloud emerge, and the old ones continue to hang around.
But while the hotshot programmers and big data geeks get to play with the shiny new toys, you're busy waiting for the robots to come and take away your job.
It doesn't have to be that way. Whether you cut your teeth on Unix and AIX or you tire of doing the necessary but thankless tasks that come with keeping the lights on and the datacenter humming, there's still time to reinvent yourself.