A data management apparatus for reducing the occurrence of garbage collection, and preventing deterioration in the performance of writing data into an SSD. The data management apparatus includes a data management unit which manages key-value data stored in the SSD, and a file management unit which creates a file of a predetermined size in accordance with a request from the data management unit, and manages the created file. The file management unit creates a file having a size of an integral multiple of a block in the SSD, the data management unit requests file management unit to write the key-value data to be stored in the file, and manages a number of the effective key-value data in each file by invalidating pre-update data of the updated key-value data and the deleted key-value data, and requests the file management unit to delete the file no longer storing the effective key-value data.

“A RAID system and method based on a solid-state storage medium. The system includes a plurality of solid-state storage devices and a main control unit. Each solid-state storage device includes a solid-state storage medium and a controller for controlling reading and writing of the solid-state storage medium. The main control unit is electrically connected to the controller of each of the solid-state storage devices in a RAID array. The main control unit is used for performing address mapping from a logical block address in the RAID array to a physical block address of the flash memory solid-state storage device. The address mapping and the RAID function can be integrated to solve the problems of write amplification and low performance. The unified management of address mapping of the solid-state storage devices can be implemented to improve the efficiency of garbage collection and wear leveling of the solid-state storage system.”

In an embodiment, a method for re-programming memory is disclosed. In the embodiment, the method involves selecting a memory page based on version information and re-programming the selected memory page using cyclic redundancy check (CRC) data for the memory page.

In an example, a method of operating a memory device to latch data for output from the memory device may include generating a first clock edge of a first clock signal in response to a first clock edge of a second clock signal, generating a second, opposite, clock edge of the first clock signal immediately following the first clock edge of the first clock signal in response to a second, opposite, clock edge of the second clock signal immediately following the first clock edge of the second clock signal, and latching the data in response to the second clock edge of the first clock signal for output from the memory device.

A memory device includes a memory array having non-volatile memory cells, and a memory controller configured to dynamically construct a superblock during each garbage collection process based, at least in part, on an amount of valid data present in each physical block of the memory array. Another memory device includes physical blocks of memory cells and a memory controller configured to construct a new superblock dynamically each time garbage collection occurs for the physical blocks regardless of whether any physical blocks are determined to be bad. Additional methods for managing operation of a memory device and related electronic systems are also described.

A system and method for compacting data in a non-volatile memory system that may reduce the need for control data updates is described. The method may include copying valid data from a source block to a destination block, and also writing new host data to the destination block, such that the offset position in the destination block of the copied data is the same as in the source block and fewer mapping table updates are needed for the copied data. The system may include a non-volatile memory system with a coarse granularity mapping table and a fine granularity mapping table where a controller in the non-volatile memory system is configured to only update the coarse granularity mapping table for compacted data written to a new block, but is configured to update both the fine and coarse granularity mapping tables for new host data written to the new block.

The various implementations described herein include systems, methods and/or devices used for garbage collection in memory system. The method includes: (1) determining occurrences of triggering events including data reclamation events, urgent data integrity recycling events, and scheduled data integrity recycling events, and (2) recycling, in response to each of a plurality of triggering events, data in a predefined quantity of memory units from a source memory portion to a target memory portion of the memory system. A respective data reclamation event corresponds to the occurrence of host data write operations in accordance with a target reclamation to host write ratio. A respective urgent data integrity recycling event occurs when a memory portion satisfies predefined urgent read disturb criteria. A respective scheduled data integrity recycling event occurs at a rate corresponding to a projected quantity of memory units to be recycled by the memory system over a period of time.

Various embodiments comprise devices to manage multiple memory types and reconfigure partitions in a memory device as directed by a host. In one embodiment, the apparatus is to manage commands through a first interface controller to mapped portions of a first memory not having an attribute enhanced set, and map portions of a second memory having the attribute enhanced set through a second interface controller. Additional devices are described.

A non-volatile memory apparatus including a non-volatile storage circuit, a main memory and a controller, and an operating method thereof are provided. Each of a plurality of logical block address groups includes a plurality of logical block addresses. Each of the logical block address groups is assigned with a group age parameter. The adjusting of the group age parameters is triggered by a writing instruction of a host. When an age parameter of the group age parameters exceeds a predetermined range, the controller performs a scanning operation to the non-volatile storage blocks of the non-volatile storage circuit corresponding to a corresponding logical block address group of the age parameter, so as to check an error-bit quantity. The controller decides whether the storage block data-moving operation is performed to the non-volatile storage block corresponding to the corresponding logical block address group based on the results of the scanning operation.

A non-volatile memory apparatus including a non-volatile storage circuit, a main memory and a controller, and an operating method thereof are provided. Each of a plurality of logical block address groups includes a plurality of logical block addresses. Each of the logical block address groups is assigned a group read-count value. An adjustment of the group read-count values is triggered by a read command of a host. When one read-count value of the group read-count values exceeds a preset range, the controller performs a scan operation to non-volatile storage blocks of the non-volatile storage circuit corresponding to a corresponding logical block address group of the read-count value, so as to check a number of error bits. The controller decides whether to perform a storage block data-moving operation to the non-volatile storage block corresponding to the corresponding logical block address group based on results of the scan operation.