Abstract: The present disclosure describes technologies and techniques for use with a data storage controller (such as a non-volatile memory (NVM) controller) to implement self-trimming of media data. In illustrative examples, an NVM controller stores a stream of video data in a NAND storage device, such as video obtained by a security camera. The controller also stores time stamps corresponding to portions of the video data. The controller then periodically (or during idle times) scans the stored information to identify video data that has exceeded a maximum data lifetime, such as data older than one week. Such data is deemed to be old/expired and is trimmed by the controller (by, e.g., marking corresponding entries in an allocation table as deleted or invalid). In this manner, the controller performs self-trimming of older video data to, for example, limit write amplification. NVMe examples are provided.

Abstract: The present disclosure describes technologies and techniques for use with a data storage controller (such as a non-volatile memory (NVM) controller) to implement self-trimming of media data. In illustrative examples, an NVM controller stores a stream of video data in a NAND storage device, such as video obtained by a security camera. The controller also stores time stamps corresponding to portions of the video data. The controller then periodically (or during idle times) scans the stored information to identify video data that has exceeded a maximum data lifetime, such as data older than one week. Such data is deemed to be old/expired and is trimmed by the controller (by, e.g., marking corresponding entries in an allocation table as deleted or invalid). In this manner, the controller performs self-trimming of older video data to, for example, limit write amplification. NVMe examples are provided.

Abstract: A device includes a memory device and a controller. The controller is configured to receive data to be stored in the non-volatile memory and to store a first copy of the data and a second copy of the data to a volatile memory. The controller is configured, in response to detecting a bit error corresponding to the first copy of the data prior to storage of the first copy of the data to the non-volatile memory, to perform an error detection operation that includes comparing first redundancy data corresponding to the first copy of the data to second redundancy data corresponding to the second copy of the data.

Abstract: A device includes a memory device and a controller. The controller is configured to receive data to be stored in the non-volatile memory and to store a first copy of the data and a second copy of the data to a volatile memory. The controller is configured, in response to detecting a bit error corresponding to the first copy of the data prior to storage of the first copy of the data to the non-volatile memory, to perform an error detection operation that includes comparing first redundancy data corresponding to the first copy of the data to second redundancy data corresponding to the second copy of the data.

Abstract: Systems and methods of memory management storage to a host device are disclosed. A method is performed in a data storage device with a non-volatile memory and a controller operative to manage the non-volatile memory and to generate management data for managing the non-volatile memory. The method includes performing, at a given time, originating at the controller data management transfer to a host device or originating at the controller data management retrieval from the host device.

Abstract: A method and system for organizing groups of data in a storage device having a non-volatile memory consisting of higher performance or endurance portion and a lower performance or endurance portion are disclosed. The method may include steps of determining a data usage status for a group of data in only one of the two portions, and if a data usage criterion is met, moving the group of data to the other of the two portions of the non-volatile memory. In another implementation, the method may include determining a data usage status of groups of data in both portions of the non-volatile memory and moving a group of data from one portion to the other if an appropriate data usage criterion is met so that groups of data may be maintained in a portion of the non-volatile memory most suited to their usage patterns.

Abstract: Systems and methods of memory management storage to a host device are disclosed. A method is performed in a data storage device with a non-volatile memory and a controller operative to manage the non-volatile memory and to generate management data for managing the non-volatile memory. The method includes performing, at a given time, originating at the controller data management transfer to a host device or originating at the controller data management retrieval from the host device.

Abstract: A method and system for organizing groups of data in a storage device having a non-volatile memory consisting of higher performance or endurance portion and a lower performance or endurance portion are disclosed. The method may include steps of determining a data usage status for a group of data in only one of the two portions, and if a data usage criterion is met, moving the group of data to the other of the two portions of the non-volatile memory. In another implementation, the method may include determining a data usage status of groups of data in both portions of the non-volatile memory and moving a group of data from one portion to the other if an appropriate data usage criterion is met so that groups of data may be maintained in a portion of the non-volatile memory most suited to their usage patterns.