I have a productive Exchange 6.5 SP2 cluster wich runs in active / passive mode and i want to add another node active nodeso the final should be A / A / P.The mail storage is using iscsi on an network appliance nas filer fas3020.I think:set up an new node with exchangeprepare the iscsi connections wich are for mailbox stores...Has anyone a plan how I do that, or a few links on the subject?Regards Michael

You need a new box, install OS on it, use the same patch level as the other two servers in the cluster. Join cluster, expose iSCSI disksandinstall Exchange with same patch level as the other servers. In cluster create a new resource group and then add resources to it, network name,IP, disk and finally Exchange System Attendant. Configure Exchange to your prefs. and test failover to different hardware.

Dear customer: I included the steps of adding an Active node to existing Exchange 2003 cluster environment below for your reference: Step 1 Create new node: 1). Open Cluster Administrator. 2). Right click the cluster name and select New -> Node; use Add Node wizard to add a node to existing cluster. Step 2 Install Exchange on new node: 1). Install the Exchange on the new node. When install the Exchange on new node, please notice the following items: a). The location for the Exchange program files should be on a local drive, and not on a drive that is used for shared storage in the cluster. b). When installing Exchange Server into a Windows server cluster, Exchange must be installed in the same directory location on all nodes. After you designate the location for the first node, the same location is used for all other nodes. You could refer to the following article for more detailed information: How to Run Exchange Setup in a Windows Server Cluster http://technet.microsoft.com/en-us/library/bb123865.aspx Step 3 Create Resource Group and resources (IP Address, Network name, Physical Disk, Exchange SA) for new Exchange virtual server 1). Resource Group: Right click Groups in the left pane, click New, click Group; use New Group Wizard to create the new group and select the new node as the preferred node. 2). IP address: 2.1). Right click the new group and click New -> Resource. 2.2). Type the name of this resource (e.g. <EVSName> IP Address, where EVSName is the name of your Exchange Virtual Server). 2.3). In the Resource type list, select IP Address. Verify that the Group box contains the name of new resource group, and then click Next. 2.4). In Possible Owners, under Possible owners, verify that all cluster nodes that will be used as Exchange servers are listed, and then click Next. 2.5). In Dependencies, under Resource dependencies, verify that no resources are listed, and then click Next. 2.6). In TCP/IP Address Parameters, in the Address box, enter a static IP address for the cluster group. 2.7). In the Subnet mask box, verify that the subnet mask is correct. 2.8). In the Network list, verify that the <Public Network Connection Name> is selected. 2.9). Ensure that the Enable NetBIOS for this address check box is selected, and then click Finish. If NetBIOS is disabled for this address, NetBIOS-based network clients will not be able to access cluster services through this IP address. 3). Network name: 3.1). Right click the new resource group, click New -> Resource. 3.2). Type EVSName Network Name, where EVSName is the name of your Exchange Virtual Server. 3.3). In the Resource type list, select Network Name. Verify that the Group box contains the name of new Exchange Virtual Server, and then click Next. 3.4). In Possible Owners, under Possible owners, verify that all nodes are listed, and then click Next. 3.5). In Dependencies, under Available resources, select the <EVSName>IP Address resource for this Exchange Virtual Server, and then click Add. Click Next. 3.6). In Network Name Parameters, in the Name box, type a network name for the Exchange Virtual Server. Note: This network name identifies the Exchange Virtual Server on your network. It is also the Exchange Virtual Server name that displays in Exchange System Manager after you create the System Attendant resource. Carefully consider the network name you select, because after creating the Exchange Virtual Server, you cannot rename it. 4). Physical Disk: 4.1). Right click the new resource group, click New -> Resource. 4.2). Type Disk <drive letter>, where drive letter is the logical drive on this disk. You should use a descriptive name, for example Disk G: Log Files. 4.3). In the Resource type list, select Physical Disk. Verify that the Group box contains the name of new Exchange Virtual Server, and then click Next. 4.4). In Possible Owners, under Possible owners, verify that both nodes are listed, and then click Next . 4.5). In Dependencies, under Resource dependencies, verify that no resources are listed, and then click Next. 4.6). In Disk Parameters, in the Disk list, select the disk you want. If the disk does not appear in this list, either another group already has a resource for the disk, or the disk was not installed successfully. 4.7). Click Finish. The disk resource appears as a resource of the Exchange Virtual Server. On the other hand, you also could move the existing Disk Resource into this new Exchange Virtual Server. Please refer to the following article for more detailed information: How to Move an Existing Disk Resource into an Exchange Virtual Server in a Windows Server Cluster http://technet.microsoft.com/en-us/library/aa995780.aspx 5). Exchange System Attendant: 5.1). Open Cluster Administrator 5.2). In the console tree, right-click new Exchange Virtual Server (new resource group), and then click Bring Online. 5.3). Right-click it, point to New, and then click Resource. 5.4). Type Exchange System Attendant - (<EVSName>), where EVSName is the name of your Exchange Virtual Server. 5.5). In the Resource type list, select Microsoft Exchange System Attendant. Verify that the Group box contains the name of your Exchange Virtual Server, and then click Next. 5.6). In Possible Owners, under Possible owners, verify that all nodes that are running Exchange 2003 are listed, and then click Next. 5.7). In Dependencies, under Available resources, select the Network Name resource and all of the Physical Disk resources for this Exchange Virtual Server, and then click Add. Click Next. 5.8). Click Next when select the Exchange Administrator Group and Routing Group. 5.9). In Data Directory, in the Enter path to the data directory box, verify the data directory location. You must verify that this location points to the shared physical disk resource assigned to this Exchange Virtual Server. Exchange will use the drive you select in this step to store the transaction log files, the default public store files, and the mailbox store files (pub1.edb, pub1.stm, priv1.edb, and priv1.stm). Click Next. 5.10). If the operation was successful, a dialog box appears indicating that you have successfully created the Exchange Virtual Server. The Exchange Virtual Server you created will now appear in Exchange System Manager. 5.11). After the Exchange Virtual Server is created, in Cluster Administrator, right-click the new Exchange Virtual Server, and then click Bring Online. More detailed information regarding creating deploy Exchange server 2003 in a cluster, you could refer to the following article: Deploying Exchange Server 2003 in a Cluster http://technet.microsoft.com/en-us/library/bb123612.aspx After all resources are bought online, please manually move this new group (new Exchange virtual server) to passive node to test the result. Hope it helps. Rock Wang - MSFT