Data transmission routing based on replication path capability

A system comprising:

• a processor;
• and
• a computer-readable storage medium communicatively coupled to the processor and storing program instructions which, when executed by the processor, cause the processor to perform a method comprising:
• collecting buffer data from a source storage device and one or more target storage devices, wherein the source storage device and the one or more target storage devices are communicatively coupled via a network;
• calculating, using the buffer data, a set of buffer capacities for a set of replication paths used for replicating data between the source storage device and the one or more target storage devices;
• correlating, using the set of buffer capacities, the set of replication paths with a set of tiered data to be replicated;
• and
• selecting, based on the correlating, a first replication path for replicating a first tier of data from the set of tiered data.

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 a method comprising:

• collecting buffer data from a source storage device and one or more target storage devices, wherein the source storage device and the one or more target storage devices are communicatively coupled via a network;
• calculating, using the buffer data, a set of buffer capacities for a set of replication paths used for replicating data between the source storage device and the one or more target storage devices;
• correlating, using the set of buffer capacities, the set of replication paths with a set of tiered data to be replicated;
• and
• selecting, based on the correlating, a first replication path for replicating a first tier of data from the set of tiered data.