Hello,
ADBO - licensed per media server
Exchange - licensed per Exchange server
AOFO - Licensed per server it backups up
RAWS - if you have option like AOFO or Exchange installed for the remote server you do not require a separate license, else it is licensed per remote server that it backs up.
Single tape drive - no license required.
However we would like you to elaborate " In short what lic's are required for a 3 server D2D2T backup solution on Win2003 with Exchange to NAS to single tape drive, using ADBO?"
NOTE : If we do not receive your reply within two business days, this post would be marked assumed answered and would be moved to answered questions pool.