We vant to set up single copy cluster. We set up windows cluster ,hub transport role and etc. But when We want to setup exchange cluster system take an error. You can see yhis log. We do't find any resaluation. Please Help 28.11.2007 17:32:28] [0] Setup will run the task 'test-setuphealth'[28.11.2007 17:32:28] [1] Setup launched task 'test-setuphealth -DomainController 'SISDMC-DC-1.dgnet.dogangazetecilik.com.tr' -DownloadConfigurationUpdates $false -ExchangeVersion '8.0.685.25' -Roles 'ClusterMailbox' -ScanType 'PrecheckInstall' -SetupRoles 'AdminTools','Mailbox','ClusterMailbox' -CmsName 'CISDMC-EXCH-APP' -CmsDataPath 'E:\Program Files\Microsoft\Exchange Server\Mailbox' -CmsIPAddress '172.25.1.55' -CmsSharedStorage $true -CreatePublicDB $true' [28.11.2007 17:32:28] [1] Beginning processing.[28.11.2007 17:32:30] [1] Beginning processing.[28.11.2007 17:32:30] [1] NewClusteredMailboxServerObjects InternalValidate entered.[28.11.2007 17:32:30] [1] Dumping the cluster named: .[28.11.2007 17:32:30] [1] Groups[28.11.2007 17:32:30] [1] group: Group 0 [not a CMS, PreferredOwners = sisdmc-exch-1,sisdmc-exch-2][28.11.2007 17:32:30] [1] OwnerNode: SISDMC-EXCH-1[28.11.2007 17:32:30] [1] State: Online[28.11.2007 17:32:30] [1] Resource: Disk E: [Online, type = Disk, PossibleOwners = sisdmc-exch-1,sisdmc-exch-2 ][28.11.2007 17:32:30] [1] group: Cluster Group [Cluster Quorum Group, PreferredOwners = sisdmc-exch-1,sisdmc-exch-2][28.11.2007 17:32:30] [1] OwnerNode: SISDMC-EXCH-2[28.11.2007 17:32:30] [1] State: Online[28.11.2007 17:32:30] [1] Resource: MSDTC [Online, type = Unknown, PossibleOwners = sisdmc-exch-1,sisdmc-exch-2 ][28.11.2007 17:32:30] [1] Resource: Cluster Name [Online, type = NetName, PossibleOwners = sisdmc-exch-1,sisdmc-exch-2 ][28.11.2007 17:32:30] [1] NetName = [CISDMC-EXCH-WIN][28.11.2007 17:32:30] [1] Resource: Cluster IP Address [Online, type = Unknown, PossibleOwners = sisdmc-exch-1,sisdmc-exch-2 ][28.11.2007 17:32:30] [1] Resource: Disk Q: [Online, type = Disk, PossibleOwners = sisdmc-exch-1,sisdmc-exch-2 ][28.11.2007 17:32:30] [1] Nodes[28.11.2007 17:32:30] [1] node: SISDMC-EXCH-1 [ state = Up ][28.11.2007 17:32:30] [1] node: SISDMC-EXCH-2 [ state = Up ][28.11.2007 17:32:30] [1] CheckNewCmsParametersAndFillInDefaults() -- verifying the parameters are valid.[28.11.2007 17:32:30] [1] Verifying that the cluster does not contain a single copy cluster and a clustered mailbox server using cluster continuous replication.[28.11.2007 17:32:30] [1] CountServersAndCheckCmsOwner(): group 'Cluster Group' has a network name of 'CISDMC-EXCH-WIN'.[28.11.2007 17:32:30] [1] CountServersAndCheckCmsOwner() found 0 servers.[28.11.2007 17:32:30] [1] [WARNING] An unexpected error has occurred and a Watson dump is being generated: Object reference not set to an instance of an object.[28.11.2007 17:32:30] [1] [ERROR] Object reference not set to an instance of an object.

you can only SCC mailbox server role. HT role is load balanced by default.