A system which identifies a memory device using a physical unclonable function. The system performs raw read operations on every page of a block; sorts the pages into low and high groups using an average number of ones based on the raw read operations; generates unordered page pairs by sequentially selecting a first page from the low group and a second page from the high group; generates ordered page pairs by selectively converting an order of pages in each pair of the unordered page pairs; and generates a sequence for identifying the selected block based on comparing the average number of ones for pages in each ordered page pair.

A system which identifies a memory device using a physical unclonable function. The system performs raw read operations on every page of a block; sorts the pages into low and high groups using an average number of ones based on the raw read operations; generates unordered page pairs by sequentially selecting a first page from the low group and a second page from the high group; generates ordered page pairs by selectively converting an order of pages in each pair of the unordered page pairs; and generates a sequence for identifying the selected block based on comparing the average number of ones for pages in each ordered page pair.

A memory device with non-volatile memory and persistent predictive prefetching provides highspeed storage to a computer system. The memory device uses a non-volatile memory to store data and a volatile memory to cache the data from the non-volatile memory. The computer system sends access requests to obtain data in the non-volatile memory. A prediction engine in the memory device receives the access requests. The prediction engine compute access histories based on the access requests and stores them in an access history table. The prediction engine computes prediction of non-volatile memory addresses that will be accessed in the future based on the stored access history table. The prediction engine causes to store the data from the predicted addresses of the non-volatile memory in the volatile memory. The memory device stores the prediction in the non-volatile memory so the past predictions can be used after restarting the computer system.

A method of performing a garbage collection operation on a source block includes: performing a plurality of partial page clean operations during a series of host write operations. Each partial clean operation includes: performing a validity check process within a partitioned searching range of the source block to obtain valid page information; and performing a page clean process according to the valid page information and a target clean page number to read valid pages indicated by the valid page information.

A method of performing a garbage collection operation on a source block includes: performing a plurality of partial page clean operations during a series of host write operations. Each partial clean operation includes: performing a validity check process within a partitioned searching range of the source block to obtain valid page information; and performing a page clean process according to the valid page information and a target clean page number to read valid pages indicated by the valid page information.

The present technology relates to an electronic device. A memory device having improved memory block management performance according to the present technology includes a memory block, a peripheral circuit, and a control logic. The peripheral circuit performs a read operation and a program operation on a selected physical page among a plurality of physical pages. The control logic controls the peripheral circuit to read first logical page data stored in a first physical page and second logical page data stored in a second physical page among the plurality of physical pages, and additionally program the second logical page data into the first physical page using the read first and second logical page data.

The present technology relates to an electronic device. A memory device having improved memory block management performance according to the present technology includes a memory block, a peripheral circuit, and a control logic. The peripheral circuit performs a read operation and a program operation on a selected physical page among a plurality of physical pages. The control logic controls the peripheral circuit to read first logical page data stored in a first physical page and second logical page data stored in a second physical page among the plurality of physical pages, and additionally program the second logical page data into the first physical page using the read first and second logical page data.

An information processing apparatus including: a first management data storing region that stores a plurality of first links being provided one for each of multiple calculating cores and representing an order of migration of pages of a page group allocated to the calculating core among a plurality of the pages; a second management data storing region that stores a second link being provided for an operating system and managing a plurality of pages selected in accordance with the order of migration among the page group of the plurality of first links as a group of candidate pages to be migrated to the second memory; and a migration processor that migrates data of a page selected from the group of the second link from the first memory to the second memory. With this configuration, occurrence of a spinlock is reduced, so that the load on processor is reduced.

Various implementations described herein relate to systems and methods for managing metadata for an atomic write operation, including determining metadata for data, queuing the metadata in an atomic list, in response to determining that atomic commit has occurred, moving the metadata from the atomic list to write lookup lists based on logical information of the data, and determining one of metadata pages of a non-volatile memory for each of the write lookup lists based on the logical information.

Various implementations described herein relate to systems and methods for managing metadata for an atomic write operation, including determining metadata for data, queuing the metadata in an atomic list, in response to determining that atomic commit has occurred, moving the metadata from the atomic list to write lookup lists based on logical information of the data, and determining one of metadata pages of a non-volatile memory for each of the write lookup lists based on the logical information.