Abstract: A method for managing a replay protection memory block (RPMB) of a storage device includes allocating an RPMB master region managed separately from an RPMB region in which an RPMB key is stored in the RPMB of the storage device, programming a master key into the RPMB master region responsive to a request from a host, receiving a reset request for the RPMB region using the master key from the host, resetting the RPMB key in response to the reset request for the RPMB region, and receiving a reset lock request for the RPMB region from the host.

Abstract: A storage device includes a non-volatile memory device including a first memory region and a second memory region, memory cells of the first memory region being at different levels from memory cells of the second memory region and a controller configured to control a base data protection operation against a rework for a reflow process by including a first operation of migrating base data stored in the first memory region to the second memory region before the rework for a first reflow process and a second operation of restoring the base data from the second memory region to the first memory region after completing the rework for the reflow process. The controller is configured to provide, to a host, management information including at least one of first information on a current state in a base data protection operation against the rework, second information on the first memory region, and third information on the second memory region.

Abstract: A storage system shares a system memory of a host. An operation method of the storage system may include receiving a command including information about a shared memory from the host, receiving a stream command having no timeout from the host, and transmitting a first packet associated with the stream command to the host in response to the received stream command. The first packet includes information for accessing the shared memory.

Abstract: A storage system shares a system memory of a host. An operation method of the storage system may include receiving a command including information about a shared memory from the host, receiving a stream command having no timeout from the host, and transmitting a first packet associated with the stream command to the host in response to the received stream command. The first packet includes information for accessing the shared memory.

Abstract: A method of operating a nonvolatile memory (NVM) is provided which includes calculating an assignment interval between successive assignments of erase blocks to free blocks from among a plurality of memory blocks of the NVM, and adjusting a number of erase blocks of the plurality of memory blocks according to the assignment interval. The erase blocks are memory blocks, having an erased state, from among the plurality of memory blocks, and the free blocks are memory blocks, which are selected to write data, from among the erase blocks.

Abstract: An operating method of a storage device and a nonvolatile memory device determine whether a nonvolatile memory device performs a program operation on at least one of a plurality of pages. Either a program time stamp table, managed with program elapsed times of the plurality of pages, or an update count of the program time stamp table is updated, based on the determination result.

Abstract: A nonvolatile memory system includes a nonvolatile memory device and a memory controller. The nonvolatile memory device includes memory blocks each having a plurality of pages and performs a read operation on the plurality of pages on the basis of read voltages. The memory controller is configured to manage page serial numbers of some of the plurality of pages according to a program elapsed time of each of the plurality of pages. When the memory controller receives a read command and a logical address from an external device, the memory controller is configured to select at least one of the managed page serial numbers, to compare the selected at least one of the page serial numbers with a page serial number of a page corresponding to the received logical address, and to control levels of the read voltages according to a comparison result.

Abstract: According to example embodiments, a table management method includes determining whether a table associated with a page in at least one nonvolatile memory device needs to be recovered, performing a block scan operation on a block in the at least one nonvolatile memory device if the table needs to be recovered, recovering the table using a time difference read from each of a plurality of pages in the block during the block scan operation, and updating the recovered table to the at least one nonvolatile memory device. The table is associated with a page among the plurality of pages in the block. The time difference is time elapsed until a current page is programmed from program time of a previous page among the plurality of pages.

Abstract: An operating method of a storage device includes reading data from a nonvolatile memory using first read parameters and second read parameters and collecting read histories associated with a plurality of read operations. First histories and second histories are determined from the collected read histories. The second read parameters are adjusted according to the first histories, and the first read parameters are adjusted according to the second histories. The read histories include information on read voltages used to perform the read operations, and the first histories and the second histories are determined from the collected read histories according to the number of read voltages having the same level.

Abstract: An operating method of a storage device includes determining whether a nonvolatile memory device performs a program operation on at least one of a plurality of pages. Either a program time stamp table, managed with program elapsed times of the plurality of pages, or an update count of the program time stamp table is updated, based on the determination result.

Abstract: An operating method of a storage device includes reading data from a nonvolatile memory using first read parameters and second read parameters and collecting read histories associated with a plurality of read operations. First histories and second histories are determined from the collected read histories. The second read parameters are adjusted according to the first histories, and the first read parameters are adjusted according to the second histories. The read histories include information on read voltages used to perform the read operations, and the first histories and the second histories are determined from the collected read histories according to the number of read voltages having the same level.

Abstract: A nonvolatile memory system includes a nonvolatile memory device and a memory controller. The nonvolatile memory device includes memory blocks each having a plurality of pages and performs a read operation on the plurality of pages on the basis of read voltages. The memory controller is configured to manage page serial numbers of some of the plurality of pages according to a program elapsed time of each of the plurality of pages. When the memory controller receives a read command and a logical address from an external device, the memory controller is configured to select at least one of the managed page serial numbers, to compare the selected at least one of the page serial numbers with a page serial number of a page corresponding to the received logical address, and to control levels of the read voltages according to a comparison result.

Abstract: A method of operating a nonvolatile memory (NVM) is provided which includes calculating an assignment interval between successive assignments of erase blocks to free blocks from among a plurality of memory blocks of the NVM, and adjusting a number of erase blocks of the plurality of memory blocks according to the assignment interval. The erase blocks are memory blocks, having an erased state, from among the plurality of memory blocks, and the free blocks are memory blocks, which are selected to write data, from among the erase blocks.

Abstract: According to example embodiments, a table management method includes determining whether a table associated with a page in at least one nonvolatile memory device needs to be recovered, performing a block scan operation on a block in the at least one nonvolatile memory device if the table needs to be recovered, recovering the table using a time difference read from each of a plurality of pages in the block during the block scan operation, and updating the recovered table to the at least one nonvolatile memory device. The table is associated with a page among the plurality of pages in the block. The time difference is time elapsed until a current page is programmed from program time of a previous page among the plurality of pages.