This is a "How does this work?" question.

On ZCM 10.2, I have set up a user source and, thus, there is a set of users on the ZEN server. (Well, actually every user in our district.) So, as part of my testing, I created a new user in eDirectory using NWAdmin. I then immedately flipped over to ZCM, and BAM! the new user is also there. Cool. That's what I wanted to happen.

But, how did this occur? What's the mechanism? How did the ZEN server know of the new user and so quickly. Does it constantly poll eDirectory? Does eDirectory know to somehow let the ZEN server know of such changes? Is the user list on the ZEN server actually a pointer into eDirectory?

Inquiring minds want to know.