Abstract: A data storage device includes a first memory device storing first data; a second memory device including a first zone storing second data, a second zone storing third data, and a third zone storing fourth data; a storage; and a controller in communication with the first memory device, the second memory device, and the storage and configured to receive one or more requests from a host and control an input and output of data from and to the first memory device, the second memory device, and the storage in response to the one or more requests from the host. The controller is further configured to copy a portion of the first data read from the first memory device to the first zone, copy a portion of the second data read from the first zone to the second zone, copy a portion of the third data read from the second zone to the third zone, and store data read more than a set number of times among data stored in the first memory device and the second memory device in the third zone.

Abstract: A data storage device includes a first memory device; a second memory device including a fetch region configured to store data evicted from the first memory device and a prefetch region divided into a plurality of sections; storage; and a controller configured to control the first memory device, the second memory device, and the storage. The controller may include a memory manager configured to select prefetch data having a set section size from the storage, load the selected prefetch data into the prefetch region and update the prefetch data based on a data read hit ratio of each of the plurality of sections.

Abstract: A data storage apparatus may include a first memory device comprising a first area in which write data from a host device are stored and a second area, a second memory device into which the write data stored in the first memory device are copied, a storage device, and a controller. The controller is configured to control data input/output for the first memory device, the second memory device and the storage device, wherein the controller comprises a cache manager configured to evict eviction target data from the second memory device by: storing the eviction target data into the storage device, and storing the eviction target data into the second area of the first memory device.

Abstract: A data storage device includes a first memory device storing first data; a second memory device including a first zone storing second data, a second zone storing third data, and a third zone storing fourth data; a storage; and a controller in communication with the first memory device, the second memory device, and the storage and configured to receive one or more requests from a host and control an input and output of data from and to the first memory device, the second memory device, and the storage in response to the one or more requests from the host. The controller is further configured to copy a portion of the first data read from the first memory device to the first zone, copy a portion of the second data read from the first zone to the second zone, copy a portion of the third data read from the second zone to the third zone, and store data read more than a set number of times among data stored in the first memory device and the second memory device in the third zone.

Abstract: A data storage device includes a first memory device; a second memory device including a fetch region configured to store data evicted from the first memory device and a prefetch region divided into a plurality of sections; storage; and a controller configured to control the first memory device, the second memory device, and the storage. The controller may include a memory manager configured to select prefetch data having a set section size from the storage, load the selected prefetch data into the prefetch region and update the prefetch data based on a data read hit ratio of each of the plurality of sections.

Abstract: A data storage apparatus may include a first memory device comprising a first area in which write data from a host device are stored and a second area, a second memory device into which the write data stored in the first memory device are copied, a storage device, and a controller. The controller is configured to control data input/output for the first memory device, the second memory device and the storage device, wherein the controller comprises a cache manager configured to evict eviction target data from the second memory device by: storing the eviction target data into the storage device, and storing the eviction target data into the second area of the first memory device.

Abstract: A memory system includes a first memory device, a second memory device, and a controller. The second memory device has a write endurance which is higher than a write endurance of the first memory device. The controller performs an error correction process on original data outputted from a host to generate a codeword including the original data and parity data. The controller separates the codeword into the original data and the parity data to write the separated original data into the first memory device and to write the separated parity data into the second memory device.

Abstract: A memory system includes a first memory device, a second memory device, and a controller. The second memory device has a write endurance which is higher than a write endurance of the first memory device. The controller performs an error correction process on original data outputted from a host to generate a codeword including the original data and parity data. The controller separates the codeword into the original data and the parity data to write the separated original data into the first memory device and to write the separated parity data into the second memory device.