We have two servers configured with exchange 2007 Hub Transport & client access roles configured with windows Network Load Balancing the first one acting as file share witness for CCR cluster we need to uninstall the second one to start deploying exchange 2010 on the server my equations how to uninstall the second server form exchange environment and what is the impact to the exchange organization Second which is better to remove the servers form environment of leave computer account in Active directory in case we to recover in feature also possible to recover the server to Hyper-V Machine if before installed on HP server hass

I am sure that HT server is part of Connectors and its source server and as there is one more server hence there won;t be any issue with Mailflow. Once you remove exchange from Control Panel and it gets removed perfectly without any error, than computer account will be removed from the AD as well. You don;t have to keep the server if you want to recover it. You need the database backup and need to install the server with same name again and restore the backup. Simple :) You might get error regarding connector on HT and you will have to remove it from the server.Gulab | MCTS-MCITP Messaging: 2010 | MCTS-MCITP Messaging: 2007 | MCC 2011 | Skype: Gulab.Mallah

thank you for your replay is they is any check list i will check before i remove the Hub Transport server with client access in the same box and what kind of error i will get regarding connector hass

You shouldn't get any known error on CAS server. Cheers,Gulab | MCTS-MCITP Messaging: 2010 | MCTS-MCITP Messaging: 2007 | MCC 2011 | Skype: Gulab.Mallah

What about Hub transport do i need to remove it from send connector or just uninstall hass

Remove the server from Send Connector from Source Server and if you have from Receive Connector as well if you have. Proceed the uninstall and post the update.Gulab | MCTS-MCITP Messaging: 2010 | MCTS-MCITP Messaging: 2007 | MCC 2011 | Skype: Gulab.Mallah

Thanks Receive Connector we have only default receive connector I think it no need to be removed is that correct hass

Yes, you don't have to remove from it. Proceed with uninstallation. Cheers,Gulab | MCTS-MCITP Messaging: 2010 | MCTS-MCITP Messaging: 2007 | MCC 2011 | Skype: Gulab.Mallah

thank you for your helphass