well first of all i'd like to thank andromeda and jeremy for your concern im sorry and im not speak english well, anyway our server specs is Intel D945GNT, 3.0ghz (HT), 2X 512MB Mem., 2x 120gb of hard drive SATA, LiteOn DVD_RW. you know i don't know what to do and i haven't any idea on how to backup entire OS and files of our client although we have 2 HDD, thats why i need to know on how to configure or setup RAID. . please help me. . what do you suggest to me? and tell the best way. . . thanks . . im hoping for your support. . . .