The failover happens automatically from the active node to the passive node in case of failure. You cannot leave the log files in a local hard disk. The log files and DB should be in the clustered storage group. The passive node when taking over the resources will need access to the log files as well. Do a search on Exchange cluster in Knowledge base, you will find some very good white papers on planning and installation. Regards, Raj -----Original Message----- From: Juan Ibarra [mailto:jibarra@xxxxxxxxxxx] Sent: Thursday, January 22, 2004 2:52 PM To: [ExchangeList] Subject: [exchangelist] Clusters http://www.MSExchange.org/ Sorry if I am double posting but I got a reply saying that my email had been rejected. Good morning to all, I have a few questions about an Exchange 2003 Cluster. We are looking into upgrading our current Exchange 5.5 to Exchange 2003. Right now we only have one server, one site. For redundancy purposes we are considering an Active/Passive cluster. Could you please tell me a best practices for setting this up? How will the fail over occur if the active node goes down? I am planning to have the log files reside on the server itself and have a Fiber Raid Array for the DBs. If the primary node fails how will the stand by node handle the logs? Thanks in advance for any information you can provide. Juan ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------