Shared-bandwidth multiple target remote copy

A computer management apparatus for sharing bandwidth in a data processing system having a plurality of locations, the apparatus comprising a processor and a memory which stores instructions, wherein the instructions, when executed by the processor, cause the apparatus to implement a plurality of components comprising:

• a split component, the split component being configured to split data into a plurality of data elements;
• a send component, the send component being configured to send, from a sender, each one of the plurality of data elements to a different location selected from a plurality of locations in response to the split component splitting the data, wherein each data element is different;
• and
• a message component, the message component being configured to send, from the sender after the data elements are sent, a message to each of the locations that received one of the data elements, wherein the message is sent from the sender separate from the data elements, and the message includes:
• information about the all of the different data elements, and
• for each location that received one of the data elements, an address of the location,
• wherein the message includes all of the addresses of all of the locations of the plurality of locations that received one of the different data elements of the data, such that the message is configured to be used by each of the locations that received one of the data elements and the message to:
• determine the address of each of the locations that received other of the data elements, and
• using the addresses in the message, send the data element received by the location to each location of the plurality of locations that received from the sender other of the data elements.