Efficient silent data transmission between computer servers

A system comprising:

• a memory having computer readable instructions;
• and
• one or more processors for executing the computer readable instructions, the computer readable instructions controlling the one or more processors to perform operations comprising:
• receiving a request to transfer data from a first storage device to a second storage device, the first storage device coupled to a sending server and the second storage device coupled to a receiving server;
• and
• transferring the data from the first storage device to the second storage device in response to the request, the transferring comprising:
• allocating a first temporary memory on the sending server;
• moving the data from the first storage device to the first temporary memory;
• initiating a transfer of the data to the second storage device via a remote direct memory access (RDMA) between the first temporary memory and a second temporary memory on the second server, the RDMA causing the data to be transferred from the first temporary memory to the second temporary memory independently of an operating system executing on a processor of the sending server and independently of an operating system executing on a processor of the receiving server;
• and
• receiving a notification that the transfer to the second storage device was completed.

A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform operations comprising:

• receiving a request to transfer data from a first storage device to a second storage device, the first storage device coupled to a sending server and the second storage device coupled to a receiving server;
• and
• transferring the data from the first storage device to the second storage device in response to the request, the transferring comprising:
• allocating a first temporary memory on the sending server;
• moving the data from the first storage device to the first temporary memory;
• initiating a transfer of the data to the second storage device via a remote direct memory access (RDMA) between the first temporary memory and a second temporary memory on the second server, the RDMA causing the data to be transferred from the first temporary memory to the second temporary memory independently of an operating system executing on a processor of the sending server and independently of an operating system executing on a processor of the receiving server;
• and
• receiving a notification that the transfer to the second storage device was completed.