IT Employment

Hello guys,

One of my friends have found in O'Reilly Press book -> Active Directory <- about Site replication schedules the followings:

"The schedule on a link represents the time period that replication is allowed across that link. Servers also maintain times that they are allowed to replicate. Obviously, if two servers and a link do not have times that coincide, no replication will ever be possible."

I thought you might help me understand. As far as I know, configuring a site link between them makes replication between two sites.
And there, on the site link properties, you set up the cost, the time schedule (hours when replication are allowed to occur), and the interval of performing updates checking?s.

What is this all about the "Servers also maintain times that they are allowed to replicate"? Is it about the fact that each server has it's own time? And how is this interfering with the replication?

Thank you for your posts, and have a good time!

P.S.

I'll be back later with a "better" post - it's a promise!