Patent ID: 8037233
Filing Date: 2011-10-11
Classification: G06F

Abstract:
1. A data storage system, comprising: a first storage unit comprising a single-layer structure for recording data; a second storage unit comprising a multi-layer structure for recording data; and a controller coupled to the first storage unit, the second storage unit, and a host, the controller informing the host that the first storage unit is a master storage device and informing the host that the second storage unit is a slave storage device when the host is in operation, wherein the first storage unit and the second storage unit are formed by partitioning a storage device, and the storage device is a multi-layer cell (MLC) flash memory; wherein the first storage unit is a first logic address section of the storage device, and the second storage unit is a second logic address section of the storage device; and wherein the first logic address section uses only lower pages for storing data, and the second logic address section uses both lower pages and upper pages for storing data.