Abstract: In a high availability redundant array of data storage elements, one of a plurality of storage element controllers (FIG. 1, 110, 120) is interfaced to a corresponding network (150, 160). Each of the plurality of storage element controllers (110, 120) receives and transmits mass storage traffic to and from a plurality of processing elements (130, 140) coupled to each network (150, 160). The storage element controllers (110, 120) also transmit and receive coherency traffic among each other in order to ensure that individual file management and manipulation operations, as initiated by each processing element (130, 140) within a network (150, 160), are carried out by the storage element controllers (110, 120) within the storage elements (100).