Abstract: A memory controller and a storage device including the same are provided. The memory controller for performing a buffering operation of temporarily storing data to be written to a non-volatile memory and data to be read from the non-volatile memory in a buffer memory includes a buffer request queue configured to store a plurality of buffer write requests requesting data to be temporarily stored in the buffer memory and a plurality of buffer read requests requesting data stored in the buffer memory to be read, a buffer traffic monitor configured to calculate the total amount of requested data in real time by summing the lengths of data specified in the respective buffer write requests and the respective buffer read requests stored in the buffer request queue, and a buffer manager configured to control execution of the buffering operation by setting an execution ratio based on the total amount of requested data calculated in real time.

Abstract: A memory controller and a storage device including the same are provided. The memory controller is provided with an internal memory in addition to an external memory for write buffering, and may manage a buffer in different modes according to the write workload of a host.

Abstract: A memory controller and a storage device including the same are provided. The memory controller is provided with an internal memory in addition to an external memory for write buffering. Accordingly, the frequency of accessing the external memory may be reduced.

Abstract: A data storage device includes a memory device including a normal data region and a mapping data region, the normal data region being configured to store normal data, the mapping data region being configured to store mapping data; a host request managing device configured to manage a read/write request from a host; a mapping managing device configured to cache a part of the mapping data and to manage mapping information according to a request from the host request managing device; and a memory controller configured to manage an operation of the memory device according to a request from at least one of the host request managing device and the mapping managing device.

Abstract: A memory controller and a storage device including the same are provided. The memory controller for performing a buffering operation of temporarily storing data to be written to a non-volatile memory and data to be read from the non-volatile memory in a buffer memory includes a buffer request queue configured to store a plurality of buffer write requests requesting data to be temporarily stored in the buffer memory and a plurality of buffer read requests requesting data stored in the buffer memory to be read, a buffer traffic monitor configured to calculate the total amount of requested data in real time by summing the lengths of data specified in the respective buffer write requests and the respective buffer read requests stored in the buffer request queue, and a buffer manager configured to control execution of the buffering operation by setting an execution ratio based on the total amount of requested data calculated in real time.

Abstract: A data storage device includes a memory device including a normal data region and a mapping data region, the normal data region being configured to store normal data, the mapping data region being configured to store mapping data; a host request managing device configured to manage a read/write request from a host; a mapping managing device configured to cache a part of the mapping data and to manage mapping information according to a request from the host request managing device; and a memory controller configured to manage an operation of the memory device according to a request from at least one of the host request managing device and the mapping managing device.

Abstract: A method of operating a storage device which includes a non-volatile memory including a normal unit configured to store normal data and a swap unit configured to store swap data and a controller configured to control the non-volatile memory is provided. The method includes receiving the swap data and a unit selection signal for selecting the swap unit from a host; and processing the swap data according to a data processing policy of the swap unit and writing the processed swap data to the swap unit. The data processing policy of the swap unit may be different from a data processing policy of the normal unit.

Abstract: A semiconductor device includes a mapping cache configured to cache mapping data stored in a memory device, and a cache controller configured to manage the mapping cache, wherein the mapping cache comprises a first cache including a plurality of cache blocks, each cache block storing first mapping information and a link for another cache block storing second mapping information having a relationship with the first mapping information.

Abstract: A semiconductor device includes a mapping cache configured to cache mapping data stored in a memory device, and a cache controller configured to manage the mapping cache, wherein the mapping cache comprises a first cache including a plurality of cache blocks, each cache block storing first mapping information and a link for another cache block storing second mapping information having a relationship with the first mapping information.

Abstract: Data storage is provided which includes a nonvolatile memory device including a plurality of memory blocks divided into a first region being an over provisioning region and a second region, and a storage controller allocating at least one memory block, corresponding to an unconcerned sector, from among memory blocks of the second region to the first region. It may be possible to adjust the number of reserved memory blocks in the over provisioning region.

Abstract: A memory device capable of performing an overwrite operation, a memory system, and a method of operating the memory system are provided. The method includes receiving one or more write requests, a logical address and data corresponding to the one or more write requests; comparing a result of analyzing at least one of the received one or more write requests, logical address, and data with a threshold value; and writing data using a first update method or a second update method, based on a result of the comparison. When the first update method is selected, the data are written in a region indicated by a physical address corresponding to the logical address according to address mapping information. When the second update method is selected, information of the physical address corresponding to the logical address is changed, and the data are written in a region indicated by the changed physical address.

Abstract: A method of operating a memory system including a nonvolatile memory, having a meta data region and a user data region, and a memory controller having a meta data manager. The method includes programming data to a memory block of the user data region and, by operation of the meta data manager, generating a meta log based on the programming. The meta log is stored to the memory controller. Upon a power-off operation, selectively storing the meta log to the meta data region of the nonvolatile memory based on status information of the nonvolatile memory.

Abstract: A writing method of a storage system which includes a host and a storage connected to the host, includes receiving journal data during a generation of a data writing transaction; inserting in a first map table, a plurality of entries, each entry including a first logical address of a first logical area of the storage and a second logical address of a second logical area of the storage; writing the journal data to a physical area of the storage corresponding to the first logical address; and remapping the physical area from the first logical address onto the second logical address using the plurality of entries when a size of a usable space of the first logical area is less than a desired value.

Abstract: Data storage is provided which includes a nonvolatile memory device including a plurality of memory blocks divided into a first region being an over provisioning region and a second region, and a storage controller allocating at least one memory block, corresponding to an unconcerned sector, from among memory blocks of the second region to the first region. It may be possible to adjust the number of reserved memory blocks in the over provisioning region.

Abstract: A method of operating a memory system including a nonvolatile memory, having a meta data region and a user data region, and a memory controller having a meta data manager. The method includes programming data to a memory block of the user data region and, by operation of the meta data manager, generating a meta log based on the programming. The meta log is stored to the memory controller. Upon a power-off operation, selectively storing the meta log to the meta data region of the nonvolatile memory based on status information of the nonvolatile memory.

Abstract: A memory device capable of performing an overwrite operation, a memory system, and a method of operating the memory system are provided. The method includes receiving one or more write requests, a logical address and data corresponding to the one or more write requests; comparing a result of analyzing at least one of the received one or more write requests, logical address, and data with a threshold value; and writing data using a first update method or a second update method, based on a result of the comparison. When the first update method is selected, the data are written in a region indicated by a physical address corresponding to the logical address according to address mapping information. When the second update method is selected, information of the physical address corresponding to the logical address is changed, and the data are written in a region indicated by the changed physical address.

Abstract: A semiconductor storage device and a method of throttling performance of the same are provided. The semiconductor storage device includes a non-volatile memory device; and a controller configured to receive a write command from a host and program write data received from the host to the non-volatile memory device in response to the write command. The controller inserts idle time after receiving the write data from the host and/or after programming the write data to the non-volatile memory device.

Abstract: A semiconductor storage device and a method of throttling performance of the same are provided. The semiconductor storage device includes a non-volatile memory device configured to store data in a non-volatile state; and a controller configured to control the non-volatile memory device. The controller calculates a new performance level, compares the calculated performance level with a predetermined reference, and determines the calculated performance level as an updated performance level according to the comparison result.

Abstract: A method of operating a storage device which includes a non-volatile memory including a normal unit configured to store normal data and a swap unit configured to store swap data and a controller configured to control the non-volatile memory is provided. The method includes receiving the swap data and a unit selection signal for selecting the swap unit from a host; and processing the swap data according to a data processing policy of the swap unit and writing the processed swap data to the swap unit. The data processing policy of the swap unit may be different from a data processing policy of the normal unit.

Abstract: A writing method of a storage system which includes a host and a storage connected to the host, includes receiving journal data during a generation of a data writing transaction; inserting in a first map table, a plurality of entries, each entry including a first logical address of a first logical area of the storage and a second logical address of a second logical area of the storage; writing the journal data to a physical area of the storage corresponding to the first logical address; and remapping the physical area from the first logical address onto the second logical address using the plurality of entries when a size of a usable space of the first logical area is less than a desired value.