Abstract: Data base performance is improved using write-behind optimization of covering cache. Non-volatile memory data cache includes a full copy of stored data file(s). Data cache and storage writes, checkpoints, and recovery may be decoupled (e.g., with separate writes, checkpoints and recoveries). A covering data cache supports improved performance by supporting database operation during storage delays or outages and/or by supporting reduced I/O operations using aggregate writes of contiguous data pages (e.g., clean and dirty pages) to stored data file(s). Aggregate writes reduce data file fragmentation and reduce the cost of snapshots. Performing write-behind operations in a background process with optimistic concurrency control may support improved database performance, for example, by not interfering with write operations to data cache. Data cache may store (e.g., in metadata) data cache checkpoint information and storage checkpoint information. A stored data file may store storage checkpoint information (e.g.

Abstract: A memory system includes a memory device with a memory cell array including a first and second plane and first and second caches. A controller is configured to output status information in response to a status read command. The status information indicating the states of the caches. The controller begins a first process in response to a command addressed to the first plane if the status information indicates the first and second caches are in the ready state, and begins a second process on the second plane according to a second command to the second plane if the status information indicates at least the second cache is in the ready state.

Abstract: A method and an apparatus for processing Bitmap data are provided by the embodiments of the present disclosure. The method for processing Bitmap data includes: dividing a Bitmap region in a disk into a plurality of partitions in advance and setting an update region in the disk; obtaining a respective amount of dirty data corresponding to each of the plurality of partitions in memory in response to a condition for writing back to the disk being satisfied; finding multiple second partitions with an amount of dirty data satisfying to be merged into the update region from the plurality of partitions according to the respective amount of dirty data corresponding to each of the plurality of partitions; and recording dirty data corresponding to the multiple second partitions in the memory into the update region in the disk through one or more I/O operations after merging.

Abstract: A storage system includes at least one solid-state drive (SSD) and a baseboard management controller (BMC). The at least one SSD communicates over a communication link information that the at least one SSD includes a predetermined number of super capacitors in which the predetermined number includes 0, and is capable of providing a mode of operation to flush data in a non-volatile memory to a non-volatile memory that spans a predetermined amount of time if a loss of power condition is detected. The BMC device receives the information from the SSD and in response sends a message to the at least on SSD to enter the mode of operation.

Abstract: Memory pages are background-relocated from a low-latency local operating memory of a server computer to a higher-latency memory installation that enables high-resolution access monitoring and thus access-demand differentiation among the relocated memory pages. Higher access-demand memory pages are background-restored to the low-latency operating memory, while lower access-demand pages are maintained in the higher latency memory installation and yet-lower access-demand pages are optionally moved to yet higher-latency memory installation.

Abstract: A method for performing data access management of a memory device in a predetermined communications architecture with aid of unbalanced table regions and associated apparatus are provided.

Abstract: An example computer-implemented method for mirroring memory in a disaggregated memory clustered environment is provided. The method includes assigning, by a hypervisor, a disaggregated memory to a virtual machine comprising a remote disaggregated memory, the virtual machine being one node of a cluster of the disaggregated memory clustered environment. The method further includes allocating, by a disaggregated memory manager, a mirrored memory for the remote disaggregated memory to mirror the remote disaggregated memory on an alternate node of the cluster of the disaggregated memory clustered environment. The method further includes responsive to a memory access occurring, maintaining, by the disaggregated memory manager, the mirrored memory. The method further includes, responsive to detecting a memory allocation adjustment, modifying, by the disaggregated memory manager, memory usage across the cluster.

Abstract: A method for managing processing power in a storage system is provided. The method includes providing a plurality of blades, each of a first subset having a storage node and storage memory, and each of a second, differing subset having a compute-only node. The method includes distributing authorities across the plurality of blades, to a plurality of nodes including at least one compute-only node, wherein each authority has ownership of a range of user data.

Abstract: A storage service supports attachment of multiple clients to a distributed storage object and further supports persistent reservations that govern types of access the respective clients are granted with respect to the distributed storage object. In order to efficiently distribute reservation state changes to multiple partitions of the distributed storage object hosted by different data storage units/servers, existing connections are used between the data storage units/servers hosting the partitions of the distributed storage object and the connected clients to propagate reservation state changes.

Abstract: Embodiments of the present disclosure provide a method, an electronic device, and a computer program product for synchronously accessing data. The method may include sending metadata associated with data to be moved by a user to a programmable network device associated with a persistent memory containing the data, so as to enable the programmable network device to move the data based on the metadata, wherein the programmable network device is a smart network interface card having a remote direct memory access function. The method may also include entering a hibernation state. In addition, the method may include exiting from the hibernation state in response to receiving a confirmation of operation completion from the programmable network device, so as to notify the user that an operation of moving the data is complete.

Abstract: Various embodiments provide for performing a memory operation, such as a memory block compaction operation or block folding or refresh operation, based on a temperature associated with a memory block of a memory device. For instance, some embodiments provide for techniques that can cause performance of a block compaction operation on a memory block at a temperature that is at least at or higher than a predetermined temperature value. Additionally, some embodiments provide for techniques that can cause performance of a block folding/refresh operation, at a temperature that is at or higher than the predetermined temperature value, on one or more blocks on which data was written at a temperature lower than the predetermined temperature value.

Abstract: Embodiments of this application provide a memory migration method, an apparatus, and a computing device.

Abstract: A processing system includes a hardware translation lookaside buffer (TLB) retry loop that retries virtual memory address to physical memory address translation requests from a software client independent of a command from the software client. In response to a retry response notification at the TLB, a controller of the TLB waits for a programmable delay period and then retries the request without involvement from the software client. After a retry results in a hit at the TLB, the controller notifies the software client of the hit. Alternatively, if a retry results in an error at the TLB, the controller notifies the software client of the error and the software client initiates error handling.

Abstract: A method for providing elastic columnar cache includes receiving cache configuration information indicating a maximum size and an incremental size for a cache associated with a user. The cache is configured to store a portion of a table in a row-major format. The method includes caching, in a column-major format, a subset of the plurality of columns of the table in the cache and receiving a plurality of data requests requesting access to the table and associated with a corresponding access pattern requiring access to one or more of the columns. While executing one or more workloads, the method includes, for each column of the table, determining an access frequency indicating a number of times the corresponding column is accessed over a predetermined time period and dynamically adjusting the subset of columns based on the access patterns, the maximum size, and the incremental size.

Abstract: A system includes a memory and at least one processing device, operatively coupled to the memory, to perform operations including causing a region of a non-volatile memory device to be accessible through a persistent memory region (PMR) of a volatile memory device. The PMR utilizes a power protection mechanism to prevent data loss in an event of power loss.

Abstract: This application is directed to dynamic management of memory read request in a memory system of an electronic device. The electronic device identifies a queue of memory access requests to access the memory system. The queue of memory access requests including at least one host read request and a current system read request. The electronic device monitors a workload condition of the memory system based on the queue of memory access requests, and generates at least a first system read request and a second system read request from the current system read request based on the workload condition of the memory system. The queue of memory access requests is updated by inserting the at least one host read request after the first system read request and before the second system read request.

Abstract: A method for performing data access management of a memory device in a predetermined communications architecture with aid of unbalanced table update and associated apparatus are provided. The method may include: utilizing a memory controller to receive a plurality of host commands from a host device through a transmission interface circuit of the memory controller, receive a set of first data and a set of second data with first and second active blocks according to first and second commands among the host commands, respectively, and update first and second temporary physical-to-logical (P2L) address mapping tables; and in response to a table region of any temporary P2L address mapping table being full, updating a first P2L address mapping table according to the first temporary P2L address mapping table and selectively updating a second P2L address mapping table according to the second temporary P2L address mapping table, for performing subsequent processing.

Abstract: Two storage arrays, a primary storage array and a remote storage array, are configured to implement a remote data replication facility, in which both the storage arrays are active, such that hosts can both read and write data to both the primary storage array and remote storage array. If the host would like to add storage, the host sends a command to one of the storage arrays to add a storage volume. The first storage array that receives the command locally creates the requested storage volume and coordinates with the second storage array to also locally create the requested storage volume. While the storage volumes are being created and formatted, the first and second storage arrays coordinate status responses to the host. Once the requested storage volumes is ready on both storage arrays, the storage volume is made accessible to the host on both storage arrays.

Abstract: Methods, systems, and devices for techniques for detection of shutdown patterns are described. A memory device may receive a set of commands from a host device. The memory device may determine whether the set of commands are associated with a shutdown procedure based on a pattern of the received set of commands. The memory device may initiate one or more operations associated with the shutdown procedure based on identifying that the set of commands are associated with the shutdown procedure. The memory device may receive a shutdown command for the shutdown procedure after initiating the one or more operations associated with the shutdown procedure. The memory device may determine that the set of commands are associated with the shutdown procedure based on a quantity of the set of commands, one or more types of the set of commands, other thresholds associated with the pattern, or a combination thereof.

Abstract: Embodiments herein relates e.g., to a method performed by a first entity, for handling memory operations of an application in a computer environment, is provided. The first entity obtains position data associated with data of the application being fragmented into a number of positions in a physical memory. The position data indicates one or more positions of the number of positions in the physical memory. The first entity then provides, to a second entity, one or more indications of the one or more positions indicated by the position data for prefetching data from the second entity, using the one or more indications.