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AssigneeEMC Corporation
InventorsIshay Kedem, Hana Moreshet, Douglas E. LeCrone, Bruce A. Pocock
Estimating the term…
A method for copying a data file from a source device to a destination device. In response to a copy command from a requesting host application identifying the source file and the storage locations in a destination, an extents track is formed to establish an environment in which the file will be copied. The calling system receives an immediate response that the copy operation is complete even though no data has been copied. Application programs may access the file in either the source or the destination. A copy program transfers the file on a track-by-track basis to the destination storage locations. Procedures assure that any data access to a particular track in either the source or destination by any application prior to the transfer of that track are accommodated to maintain data integrity.
In a data processing system including a host device for generating commands during the processing of a host application and first and second disk storage devices, a method for copying data from a set predetermined locations in the first disk storage device to a set of corresponding predetermined locations in the second disk storage device in response to a command from a host application identifying the predetermined locations, said method comprising the steps in sequence of:
A data storage facility that connects to a host device that generates commands during the processing of host applications wherein said data storage facility is adapted for copying data from a set of predetermined locations in a first disk storage device to a set of corresponding predetermined locations in a second disk storage device in response to a predetermined command from a host application identifying the predetermined locations in said first and second disk storage devices, said facility comprising:
In a system including a host for generating commands during the processing of a host application, a method for copying data from predetermined locations in a source disk storage device to corresponding predetermined locations in a destination disk storage device in response to a host command identifying the predetermined storage locations, said method comprising the steps in sequence of:
In a system including at least one host that generates input-output commands, apparatus for copying data from predetermined locations in a source disk storage device to corresponding locations in a destination disk storage device in response to a predetermined one of the commands identifying the predetermined storage locations, said apparatus comprising:
Dependencies are inferred from the claim text.