Abstract: Method and apparatus for providing disaster recovery with respect to a production mainframe having an operating system encoded in Extended Binary Coded Decimal Instruction Code (EBCDIC). The method includes copying said operating system from a direct access storage device (DASD) of said production mainframe to a file, compressing said file, transferring said file to a remote computer by binary File Transfer Protocol, and storing said file proximate said remote computer.

Abstract: Various data copy systems and methods for use in a disaster recovery network architecture including first, second and third computers and various datalinks coupling the first, second and third computers together. One embodiment of such a method includes: (1) transferring the data from the first computer to the second computer, (2) transferring the data from the second computer to the third computer only after the transferring the data from the first computer to the second computer is complete and (3) deleting the data from the second computer only after the transferring the data from the second computer to the third computer is complete.