Waiter, one with lots of information (6)
I believe the answer is:
server
'waiter' is the definition.
(I know that server is a type of waiter)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for server that I've seen before include "Network-controlling computer" , "Waiter or tennis player who puts ball into play" , "Waiter or computer facility" , "Computer network access managing device" , "Priest's assistant" .)