STORAGE DEVICE AND COMPUTING SYSTEM

摘要

A storage device and a computing system are provided to increase the data bandwidth between a host and a memory by simplifying an address converting process between the host and the memory. A second memory(220) has second storage capacity larger than first storage capacity, and a controller(230) provides an address space corresponding to third storage capacity to an external host. The third storage capacity is smaller than the sum of the first and second storage capacities and larger than the first storage capacity. When the data requested from an external host exists in the first memory, the controller transfers the requested data from a first memory(210) to an external host. Otherwise, the controller transfers the requested data from the second memory to the external host.