i m planning to implement LCR on Ex2007 Sp1.ihave twoSAN in my setup. one for active & another for passive copy.Whilethere is an asynchro. replicationis going on between Active to Passive copy,which processing power isgetting utilized. is it Server's or SAN's?thanks,raj

Hi Rajiv,It should be server.LCR handled by"MicrosoftExchange Replication" service running on the Mailbox server and additional resource consumption comes from log file verification and log file replay by it so you need to consider approximately 20% of additional processing cost.Check below articles to understand how Continuous Replication works and what should be considered while implementing it.Exchange 2007 - Continuous Replication Architecture and Behaviorhttp://blogs.technet.com/scottschnoll/archive/2006/10/06/Exchange-2007-_2D00_-Continuous-Replication-Architecture-and-Behavior.aspxPlanning for Local Continuous Replicationhttp://technet.microsoft.com/en-us/library/bb124704.aspxAmit Tank || MVP - Exchange || MCITP - Exchange 2007 || http://ExchangeShare.WordPress.com

thanks...can beat your speed... :)regards,raj