摘要:
A solid state storage device and method are provided. Multiple blocks are configured as storage memory for a solid state storage device, and each block includes multiple pages. A controller is configured to operate the solid state storage device. A free block of the multiple blocks is assigned a marker level by the controller. For a particular page of the multiple pages, each particular page of data is written to a block of the multiple blocks with a marker level corresponding to a level of dynamicity calculated by the controller for that particular page.
摘要:
A method for automated validation and execution of cryptographic key and certificate deployment and distribution includes providing one or more keys; providing one or more key deployment points; and distributing the one or more keys to the one or more key deployment points in an automated manner based on a matrix or pattern mapping of each of the one or more keys to be distributed to each of the one or more key deployment points.
摘要:
A memory management system and method for managing memory blocks of a memory device of a computer. The system includes a free block data structure including free memory blocks for writing, and sorting the free memory blocks in a predetermined order based on block write-erase endurance cycle count and receiving new user-write requests to update existing data and relocation write requests to relocate existing data separately, a user-write block pool for receiving youngest blocks holding user-write data (i.e., any page being updated frequently) from the free block data structure, a relocation block pool for receiving oldest blocks holding relocation data (i.e., any page being updated infrequently) from the free block data structure, and a garbage collection pool structure for selecting at least one of user-write blocks and relocation blocks for garbage collection, wherein the selected block is moved back to the free block data structure upon being relocated and erased.
摘要:
In a method for identifying a unit in a solid state memory device for writing data to a tier structure is maintained the tier structure comprising at least two tiers for assigning units available for writing data to. In response to receiving a request for writing data it is determined if a unit for writing data to is available in a first tier of the at least two tiers. In response to determining that a unit is available for writing data to in the first tier this unit is identified for writing data to, and in response to determining that no unit is available for writing the data to in the first tier it is determined if a unit is available for writing data to in a second tier of the at least two tiers subject to a priority of the write request.
摘要:
In a method for identifying a unit in a solid state memory device for writing data to a tier structure is maintained the tier structure comprising at least two tiers for assigning units available for writing data to. In response to receiving a request for writing data it is determined if a unit for writing data to is available in a first tier of the at least two tiers. In response to determining that a unit is available for writing data to in the first tier this unit is identified for writing data to, and in response to determining that no unit is available for writing the data to in the first tier it is determined if a unit is available for writing data to in a second tier of the at least two tiers subject to a priority of the write request.
摘要:
Methods and apparatus are provided for controlling data management operations including storage of data in solid state storage of a solid state storage system. Input data is stored in successive groups of data write locations in the solid state storage. Each group comprises a set of write locations in each of a plurality of logical subdivisions of the solid state storage. The input data to be stored in each group is encoded in accordance with first and second linear error correction codes. The encoding is performed by constructing from the input data to be stored in each group a logical array of rows and columns of data symbols. The rows and columns are respectively encoded in accordance with the first and second linear error correction codes to produce an encoded array in which all rows correspond to respective first codewords and columns correspond to respective second codewords.
摘要:
A method for facilitating fast reconstruction of metadata structures on a memory storage device includes writing a plurality of checkpoints holding a root of metadata structures in an increasing order of timestamps to a plurality of blocks respectively on the memory storage device utilizing a memory controller, where each checkpoint is associated with a timestamp, and wherein the last-written checkpoint contains a root to the latest metadata information from where metadata structures are reconstructed.
摘要:
A method for managing data in a data storage system having a solid-state storage device and alternative storage includes identifying data to be moved in the solid-state storage device for internal management of the solid-state storage; moving at least some of the identified data to the alternative storage instead of the solid-state storage; and maintaining metadata indicating the location of data in the solid-state storage device and the alternative storage.
摘要:
Provided are a system, method, and computer program product for managing cache memory to cache data units in at least one storage device. A cache controller is coupled to at least two flash bricks, each comprising a flash memory. Metadata indicates a mapping of the data units to the flash bricks caching the data units, wherein the metadata is used to determine the flash bricks on which the cache controller caches received data units. The metadata is updated to indicate the flash brick having the flash memory on which data units are cached.
摘要:
Flash memory systems and methods for efficiently locating meta-data structures on solid-state devices, such as, flash-based memory devices, which allows for fast reconstruction of metadata structures are provided. These systems and methods place checkpoints, which identify the location of metadata structures, intelligently on the device so as to permit a more efficient method of locating such checkpoints. These techniques ensure best wear-leveling as all blocks on the device undergo the same wear-leveling strategy. These systems and methods further provide a free block maintenance strategy that provides blocks freed by garbage collection for future checkpoint writes.