It'll pull the full 100 MB DAT file if the DAT file on the system in question is 30 days or more out of date.
Thank for your reply.
So, if i disable replication & only enable lazy caching on the Distributed repository, and if all the MA are communicating within last 30 days, in this scenario the DAT(100 MB) file need not to pulled from DR/MA , right?
Close. The relevant factor is not whether the Agent has communicated in the last 30 days, but whether the DAT file on the system has been updated in the last 30 days. It is possible for the Agent to be communicating and the DAT file failing to update, for example.