The invention relates to a method, a non-transitory computer program product, and an apparatus for managing data storage. The method performed by a flash controller includes: obtaining information indicating a subregion to be activated, where the subregion is associated with a logical block address (LBA) range; triggering a garbage collection (GC) process being performed in background to migrate user data of all the or a portion of the LBA range associated with the subregion to continuous physical addresses in a flash device; and updating content of a plurality of entries associated with the subregion according to migration results, where each entry includes information indicating which physical address that user data of a corresponding logical address is physically stored in the flash device.

A host system can be queried to determine whether new data has been received based on a first time interval. After completion of the first time interval, a determination can be made as to whether the new data has been received and whether a portion of the new data was not stored. In response to the portion of the new data not being stored, the host system can be queried to determine whether subsequent data has been received based on a second time interval where the second time interval is different from first time interval.

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 conditional update, including adding conditional entry to a list in an in-memory journal for a conditional update associated with a garbage collection write, configuring a base entry in the list to point to the conditional entry, and in response to determining that the conditional update is resolved such that a physical location identified in the conditional entry is valid, freeing the conditional entry.

Systems and methods are disclosed for the intelligent scheduling of garbage collection operations on a solid state memory. In certain embodiments, a method may comprise initiating a garbage collection process for a solid state memory (SSM) having a multiple die architecture, determining an order of die access for the garbage collection process based on an activity table indicating a use of one or more die in the multiple die architecture, and performing the garbage collection process based on the determined order of die access. Garbage collection reads may be directed to idle die to avoid conflicts with die busy performing other operations, thereby improving system performance.

A memory system includes a memory array having a plurality of memory cells; and a controller coupled to the memory array, the controller configured to: designate a storage mode for a target set of memory cells based on valid data in a source block, wherein the target set of memory cells are configured with a capacity to store up to a maximum number of bits per cell, and the storage mode is for dynamically configuring the target set of memory cells in as cache memory that stores a number of bits less per cell than the corresponding maximum capacity.

A method of operating a data storage device includes programming non-fully programmed memory blocks at a point in time when a reference time elapses from a point in time when each of the memory blocks is physically erased, acquiring a first interval and a second interval, calculating a disturb index based on the first interval and the second interval, selecting a victim block for garbage collection based on the disturb index, and copying valid page data of the victim block into a free block. The first interval is defined by a point in time when each of the memory blocks is physically erased and a point in time when each of the memory blocks is fully programmed. The second interval is an interval during which a fully programmed state is maintained after a point in time when each of the memory blocks is fully programmed.

An embodiment for operation of an emulated electrically erasable (EEE) memory system includes a memory controller configured to identify a first quick record of a stack of quick records as a present record, wherein the stack of quick records are stored in a non-volatile portion of memory, the first quick record has a quick record status identifier (ID) that indicates the stack of quick records has not been qualified, determine a record status of a next record after the present record in the non-volatile portion of memory, and in response to a determination that the next record has a blank record status ID: update the next record from the blank record status ID to the quick record status ID, wherein the blank record status ID indicates that the next record is part of the stack of quick records, and qualify the present record using the plurality of program steps.

A storage management method and a storage management apparatus are provided. In some embodiments, the method includes: detecting, during a preset length of time, a writing amount per time unit of service data of a target network service in a target storage; retrieving a correspondence relationship between the writing amount per time unit and an amount of a redundant storage, wherein the relationship indicates the amount of the redundant storage increases with the increasing of the writing amount per time unit; determining a first amount of the redundant storage corresponding to the first writing amount per time unit according to the correspondence relationship; and configuring the redundant storage for the target network service in accordance with the first amount of the redundant storage.

According to one embodiment, when receiving a write request to designate a first block number and a first logical address from a host, a memory system determines a first location in a first block having the first block number, to which data from the host is to be written, and writes the data from the host to the first location of the first block. The memory system updates a first address translation table managing mapping between logical addresses and in-block physical addresses of the first block, and maps a first in-block physical address indicative of the first location to the first logical address.