Dear Ruba, Thank you for your information, and your help . but I have some questions 1. For Daily Backup , should I make it online backup or off line backup , and if its online Backup every day , what type of Backup should I make ( Normal , Copy , incremental , Differential , Daily ) . 2. When I was running online back up , the backup report said " complete with the skipped Files ", when I searched on it in KDbase, I found that I have to install the service Pack for Exchange, what do you think, did you face this Problem Before ? and was that solution ? 3. You mean when I am restoring every thing from beginning, I will only reinstall Windows 2000 Advanced server + SP for Windows + SP for Exchange, or is there any need to reinstall the exchange in disaster recovery mode ? For Veritas , there was a siminar for it in Jeddah & I Attend this seminar, I ordered the CD from Veritas and I am working on it as testing , but do you think it is good ? Because this is the first time for me to work with Exchange Server Backup. 4. what will happen if I delete all of the Log files , is there any Problem from it. I mean with off line backup, all of the log file will be delete from the Hard disk and it will record it self in the Database while I am dismount it ., so is there any Problem will happen . ??