We are currently using Exchange 2007 in a CCR cluster with an SCR node in a remote site. I was monitoring replication traffic to the SCR node using get-mailboxcopystatus -standbymachine and saw the logfiles queuing up significantly as I moved mailbox after mailbox. The SCR is connected to our site with the Exchange CCR cluster by a single T1. Once I saw 7500 logfiles in the replay queue, I thought I should probably wait and let it catch up. I plan to split the largest store (440+ GB) into several smaller stores and wanted to know if I should be sure to keep a close eye on the replay queue or if this is something that will just back up and then gradually come across.