Storage system for back-end communications with other storage system

摘要

In a first and second storage system, first (303A) and second (303B) switching apparatuses are interposed between a first (120A) and second (120B) controller and a storage device (12A, 12B). At least one of the first and second switching apparatuses comprises a shared memory (185). The constitution is such that the first and second controllers communicate with one another via this shared memory.