Hi You should install the new server as the part of the existing site (chose option join existing site). Then you should move all of the mailboxes from server1 to server2 (Tools--> Move mailbox). Remember that you can't move open mailbox. I suggest to move mailboxes at night. If you have Public Folder (and system folders) you should create Replica to the new site, and change the home server to the new site (Advanced properties on PF). Rember check the "Propogate" check box. If you have more than one site in org you should change the brighead servers on the site and directory connectors Also you should change Site Addressing and Offline Addres Book generation to the new server. Good luck Denis Mizetsky -----Original Message----- From: Dave MacKinnon [mailto:dmackinnon@xxxxxxxxxx] Sent: Monday, February 25, 2002 21:51 To: [ExchangeList] Subject: [exchangelist] Help! http://www.MSExchange.org/ I have an Exchange Server site running now. I want to replace the server with a new one but with very little down time. I started installing exchange 5.5 on the new server and it asks if I want to join an existing site or create a new one. Can I join the existing site, if so what happens when you do so, does it take all of the user's mail boxes, and transfers them to the new server or does the new server act as a backup. What will happen when I take the primary server offline, does the new server take over. Any help or guidance appreciated, I aml trying to limit the suprises. ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: denism2000@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')