We currently have Exchange 2007 SP2 Standard edition runnin on Windows 2008 Enterprise server. We currently have LCR, but we don't think it's a sufficient DR. So we looked at SCR and tested it, but have not implemented it. Now we are looking into implementing CCR, so that it'll truly be DR ready. However, from reading some articles, it seems that we'd need to completely reinstall Exchange. Clustering must be set up first before exchange 2007 std. is installed. I need some advice on this. We'd like to put a server across town connected via T3 and be a passive cluster standby Exchange server.