Disclosed in some examples are methods, systems, devices, and machine-readable mediums that provide for techniques for scrambling and/or updating meta-data that enable an efficient internal copyback operation. In some examples, improved data distribution techniques decouple the scrambling key from a physical address to allow for copyback operations while maintaining data distribution requirements across a memory device. The controller may generate a seed value that is used by a scrambling algorithm to scramble the host-data and meta-data prior to the data being written. The seed value is then encoded and written to the page with encoded versions of the scrambled user data and meta-data—the random seed is written without scrambling the random seed.

A die read counter and a block read counter are maintained for a specified block of a memory device. An estimated number of read events associated with the specified block is determined based on a value of the block read counter and a value of the die read counter. Responsive to determining that the estimated number of read events satisfies a criterion, a media management operation of one or more pages associated with the specified block is performed.

A data storage device utilized for storing a plurality of data includes a memory and a controller. The memory includes a plurality of blocks, and each of the blocks includes a plurality of physical pages. The controller is coupled to the memory and maps the logical pages to the physical pages of the memory. When the controller detects that a first logical page of the logical pages is a currently-used logical page, it detects whether or not the second logical page which belongs to the last logical page of the first logical page is a currently-used logical page in order to find what is truly the last currently-used logical page.

A method of managing data in a storage device is provided. The storage device includes a plurality of nonvolatile memory chips each including a plurality of pages. A first data object is received from an external host device. The first data object has an unfixed size and corresponds to a first logical address which is a single address. Based on determining that it is impossible to store the first data in a single page among the plurality of pages, a buffering policy for the first data object is set based on at least one selection parameter. While mapping the first logical address of the first data object and a first physical address of pages in which the first data object is stored, a first buffering direction representing the buffering policy for the first data object is stored with a mapping result.

A respective write cycle count for each of a plurality of data units of a memory device is obtained. Based on the respective write cycle count, whether a data unit of the plurality of data units satisfies a media management criterion is determined. Responsive to determining that the respective write cycle count satisfies the media management criterion, a media management operation every first constant cycle count on the data unit is performed. Responsive to determining that the respective write cycle count does not satisfy the media management criterion, a media management operation every second constant cycle count on the data unit is performed. The second constant cycle count is less than the first constant count.

Aspects of a storage device including a memory and an encryption core are provided. The storage device may be configured for providing secure data storage, as well as one or more post-processing operations to be performed with the data. The encryption core, which may be configured to decrypt data, may control execution of one or more post-processing operations using the data. A read command received from a host device may include a tag associated with data identified by the read command. When encrypted data is retrieved from memory according to the read command, the encryption core may decrypt the encrypted data and provide the decrypted data for post-processing based on the tag. A corresponding post-processing operation may return a result when executed using the decrypted data. Rather than raw data identified by the read command, the result may be delivered to the host device in response to the read command.

A memory system includes a nonvolatile memory and a controller. The nonvolatile memory has first regions in which data writes and data reads can be executed in parallel. Each of the first regions has second regions which are each a data write/read unit. The controller acquires first values indicating a data write load for each of the first regions, detects a first region having a first value greater than or equal to a first threshold, acquires second values indicating a data write load for each of the plurality of second regions in the detected first region, detects a second region having a second value greater than or equal to a second threshold but less than or equal to a third threshold that is higher than the second threshold, and then move data from the detected second region to a second region in another first region.

A memory system having multiple address tables to translate logical addresses to physical addresses at different granularity levels is disclosed. For example, a first address table is associated with a first block size of translating logical addresses for accessing system files and application files; and a second address table is associated with a second block size of translating logical addresses for storing and/or retrieving data from an image sensor of a surveillance camera. A user interface can be used to access a configuration option to specify the second block size; and a user may indicate a typical size of an image or video file to be recorded by the surveillance camera to calculate the second block size and thus configure the second address table for a partition to record the image or video files.

A memory sub-system configured to dynamically determine input/output sizes of write commands based on a media physical layout of a memory sub-system. The memory sub-system can identify, dynamically in response to write commands being selected for execution in media units of the memory sub-system, a portion of a media layout that maps from logical addresses identified by the write commands in the logical address space to physical addresses of memory units in the media units. Based on the media layout, an input/output size for a next write command is identified and transmitted to the host system in a response. The host system generates the next write command and configures the amount of data to be written through the next write command based on based on the input/output size identified in the response.

A digital data processor includes an instruction memory storing instructions specifying a data processing operation and a data operand field, an instruction decoder coupled to the instruction memory for recalling instructions from the instruction memory and determining the operation and the data operand, and an operational unit coupled to a data register file and to an instruction decoder to perform a data processing operation upon an operand corresponding to an instruction decoded by the instruction decoder and storing results of the data processing operation. The operational unit is configured to perform a table write in response to a look up table initialization instruction by duplicating at least one data element from a source data register to create duplicated data elements, and writing the duplicated data elements to a specified location in a specified number of at least one table and a corresponding location in at least one other table.