Abstract: According to some embodiments, a system, method and non-transitory, computer readable medium are provided comprising a memory storing processor-executable program code; and a processing unit to cause the system to: receive a range of persistent volume disk size values from a cloud service provider; receive a value for an upper bound of a number of persistent volume disks attachable to a virtual machine per the cloud service; determine a number of persistent volume disks based on the upper bound, wherein the number is at least two; generate a plurality of configurations of the determined number of persistent volume disks, wherein a configuration is provided for each persistent volume disk size value, and each configuration divides the persistent volume disk size value between two or more persistent volume disks; and aggregate the generated plurality of configurations in a decision table. Numerous other aspects are provided.

Abstract: Systems and methods for quality of service management are provided. According to one embodiment, a non-transitory computer-readable medium comprises instructions that when executed by the processing resource cause the processing resource to collect, from a plurality of volumes on a per-volume basis, one or more real-time performance metrics for one or more compute processes executing on the one or more computer systems, generate an inertial parameter for one or more volumes in the plurality of volumes, and generate an instruction that cause a processor to use the real-time performance metrics and the inertial parameter to determine whether to transfer responsibility for a compute process on a first storage server node to a second storage server node.

Abstract: Methods, apparatus, and processor-readable storage media for determining storage system configuration recommendations based on vertical sectors and size parameters using machine learning techniques are provided herein.

Abstract: Methods, systems, and devices for fast mode for a memory device are described. In some examples, a memory device may be initialized during a system boot procedure. The memory device may support multiple modes of operation, including at least a first mode that includes a first set of capabilities, and a second made that includes the first set of capabilities, as well as one or more additional capabilities. The memory device may perform the initialization while operating the memory device according to the first mode, which may include delaying one or more actions associated with the one or more additional capabilities. After the system boot procedure is complete, the memory device may operate according to the second mode, which may include performing an action delayed during the system boot.

Abstract: A computer-implemented method comprises receiving, by a processor, search requests to search a database; receiving a reindex request to reindex information in the database based on a new ontology for the database or a new number of shards for a first index server; initiating, by the processor, generation of a second index for the database while a first index managed by the first index server continues to be used live for responding to received search requests; completing the generation of the second index during a certain period when no search request is sent to the first index server; and in response to the completing, using the second index live for responding to received search requests.

Abstract: Methods, systems, and devices for a read operation using compressed memory are described. An apparatus may include a host system coupled with a non-volatile memory device and a volatile memory device. The host system may store, in the volatile memory device, a compressed copy of data stored in the non-volatile memory device, for example, based on a score assigned to the data. The host system may identify that the compressed copy of the data is stored in the volatile memory device and may transmit a read command to the volatile memory device that includes a logical address associated with a logical block address of the data stored in the non-volatile memory device. The host system may receive the compressed copy of the data from the volatile memory device in response to the read command and may decompress the data.

Abstract: A method for reading data in a storage device is provided. The method includes receiving a read command from a host device, wherein the read command indicates stored data in the storage device and a Logical Block Address (LBA) of the stored data; obtaining a Physical Block Number (PBN) based on the LBA and a Logical to Physical (L2P) mapping; determining whether the PBN corresponds to a volatile memory of the storage device; reading the stored data directly from the volatile memory based on the PBN corresponding to the volatile memory; incrementing a read counter associated with the PBN based on the stored data being read directly from the volatile memory; and reading the stored data from a non-volatile memory of the storage device based on the PBN not corresponding to the volatile memory.

Abstract: According to an aspect, there are provided an apparatus and a method for providing an access to a memory circuit. A read enable input initializing a wait state counter configured to count a predetermined number of clock cycles is received (200) and the wait state counter output is monitored. A memory ready signal output is received (202) from the memory circuit at a synchronizer input and the output signal of the synchronizer is monitored. An ON-state data ready signal is provided (204) when either the wait state counter has elapsed, or the output signal of the synchronizer is in ON-state.

Abstract: A computer device, a setting method for a memory module, and a mainboard are provided. The computer device includes a memory module, a processor, and the mainboard. A basic input output system (BIOS) of the mainboard stores an extreme memory profile (XMP). When the processor performs the BIOS so that the computer device displays a user interface (UI), the BIOS displays an overclocking option corresponding to the XMP in a selection list of the UI. When the BIOS receives a selection request corresponding to the overclocking option of the selection list, the BIOS reads multiple memory setting parameters corresponding to the XMP, and configures the memory module according to the memory setting parameters.

Abstract: Embodiments of the invention relate to methods and systems for efficiently backing up and restoring assets such as files and folders in the form of slices and streams. In one or more embodiments, assets such as files and folders that are to be backed up are placed in appropriate network slice queues, which are then assigned to network streams. The slices/assets are assigned in such a way that each stream has a similar cost and throughput. The backup is performed, and the streams are stored in their own backup containers until a restoration is needed. Once a restoration is needed, the meta-data for the backup is used to restore the files and folders, forming the asset back to their appropriate locations in the target file-system. This results in efficient use of network resources, while minimizing the amount of work the hosts and/or clients must perform during a backup or restoration.

Abstract: In various embodiments, a software program uses hardware features of a parallel processor to checkpoint a context associated with an execution of a software application on the parallel processor. The software program uses a preemption feature of the parallel processor to cause the parallel processor to stop executing instructions in accordance with the context. The software program then causes the parallel processor to collect state data associated with the context. After generating a checkpoint based on the state data, the software program causes the parallel processor to resume executing instructions in accordance with the context.

Abstract: The system determines a first and a second snapshot of memory usage by processes in a computing system based on a predetermined time interval, wherein a respective snapshot indicates, for a respective process, memory usage corresponding to memory types including private memory and shared memory. The system computes, for processes common to the first and the second snapshots, a likelihood of memory leak for a process and memory type based on: an increase in an amount of heap memory and private memory; an increase in an amount of shared memory; and an increase in a total amount of private and shared memory. The system compares the computed likelihood for the process with a predetermined threshold. Responsive to determining that the computed likelihood for the process exceeds the predetermined threshold, the system performs a corrective action to address memory leak associated with the process.

Abstract: Memory access circuitry enforces ownership rights for memory regions. A given memory region is associated with an owner realm specified from multiple realms, each realm corresponding to a portion of at least one software process executed by processing circuitry. A realm management unit (RMU) is provided to perform realm management operations for managing the realms. The memory access circuitry controls access to a given memory region in dependence on at least one status attribute specifying whether the given memory region is an RMU-private memory region reserved for exclusive access by the RMU.

Abstract: Disclosed is a system that comprises a memory device and a processing device, operatively coupled with the memory device, to perform operations that include receiving, by the processing device, a trim command on the memory device, wherein the trim command references a range of logical block addresses (LBAs). The operations performed by the processing device further include identifying a group of memory cells corresponding to the range of LBAs, wherein the group of memory cells comprises one or more management units (MUs). The operations performed by the processing device further include updating a data structure associated with the group of memory cells to reference the request; receiving a memory access command with respect to the group of memory cells.

Abstract: A method is used in managing storage operations in storage systems. Based on a set of criteria, an amount of storage resources required to perform a storage operation is determined. The storage operation is directed to fault tolerant storage devices. The amount of storage resources is allocated prior to start performing the storage operation. The storage operation is performed by using the allocated storage resources.

Abstract: The present invention relates to join acceleration. In an embodiment, a computer receives a request for a relational join of build data rows with probe data rows. Based on the request for the relational join, a particular kind of data map from many kinds of data map that can implement the relational join is dynamically selected. Based on the build data rows, an instance of the particular kind of data map is populated. A response is sent for the request for the relational join that is based on the probe data rows and the instance of the particular kind of data map.

Abstract: The memory sub-systems of the present disclosure selects, for memory scans, a memory block which has a highest page fill ratio. In one embodiment, the memory sub-system identifies a number of block stripes located on a logical unit (LU) identified by a logical unit number (LUN), where the LU is one of a plurality of LUs of a memory device. The sub-system determines a fill ratio for each of the plurality of block stripes. The sub-system selects, among the block stripes, a block stripe with a highest fill ratio. The sub-system identifies, from the selected block stripe, a memory block of the LU. The sub-system performs a memory scan operation on the memory block of the memory device.

Abstract: A method, performed by an electronic device, includes: based on a target event associated with an application being initiated, transmitting initiation of the target event to a runtime environment of the application, and after transmitting the initiation of the target event to the runtime environment, based on a memory value allocated to the application exceeding a threshold value for determining whether to initiate a garbage collection, skipping performing the garbage collection and updating a bound memory value, defined in the garbage collection, and the threshold value.

Abstract: A storage system includes a first node mounting two controllers. The two controllers of the first node are subjected to setting of redundancy such that the two controllers belong to differing redundancy groups, respectively. When a configuration change is requested due to addition of a second node mounting one controller to the storage system, the second node sets the controller of the second node belongs to a redundancy group to which either of the two controllers of the first node belongs, and the first node changes the setting of redundancy such that setting information on the redundancy group of either of the two controllers of the first node does not change; and deactivates a controller of the first node for which the setting information on the redundancy group changes as a result of a change in the setting of redundancy.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for allocation in a victim cache system. An example apparatus includes a first cache storage, a second cache storage, a cache controller coupled to the first cache storage and the second cache storage and operable to receive a memory operation that specifies an address, determine, based on the address, that the memory operation evicts a first set of data from the first cache storage, determine that the first set of data is unmodified relative to an extended memory, and cause the first set of data to be stored in the second cache storage.

Abstract: Techniques are described herein for prediction of an buffer pool size (BPS). Before performing BPS prediction, gathered data are used to determine whether a target workload is in a steady state. Historical utilization data gathered while the workload is in a steady state are used to predict object-specific BPS components for database objects, accessed by the target workload, that are identified for BPS analysis based on shares of the total disk I/O requests, for the workload, that are attributed to the respective objects. Preference of analysis is given to objects that are associated with larger shares of disk I/O activity. An object-specific BPS component is determined based on a coverage function that returns a percentage of the database object size (on disk) that should be available in the buffer pool for that database object. The percentage is determined using either a heuristic-based or a machine learning-based approach.

Abstract: Methods and apparatus for rebuilding and storing data in a storage network that includes a plurality of storage units. In an embodiment, a processing module(s) of storage network identifies a storage error associated with a data object stored in a first storage unit of a set of storage units. In response, the processing module obtains storage network configuration information associated with the data object, and rebuilds the data object to produce a rebuilt data object. The processing module further identifies, based on the storage network configuration information, a candidate storage unit(s) for storage of the rebuilt data object and determines an available storage capacity level of the candidate storage unit. In response to determining that the available storage capacity level of the candidate storage unit is sufficient to store the rebuilt data object, the processing module facilitates storage of the rebuilt data object in the candidate storage unit.

Abstract: A method, computer program product, and computer system for maintaining a back pointer from a physical layer block (PLB) to a virtual layer block (VLB) in a multi-level hierarchical file system. A generation number may be maintained in the VLB, wherein the generation number may indicate when data is moved from the PLB to another PLB. An object may be reconstructed in the multi-level hierarchical file system based upon, at least in part, at least one of the back pointer and the generation number.

Abstract: In a memory component programmed to operate in a first operating mode and having a page buffer and a fixed-width data interface, N bits of a command/address value are decoded to access one of 2N columns of data within the page-buffer, with that column of data output via the fixed-width data interface over a first burst interval. If programmed to operate in a second operating mode, M bits of the command/address value are decoded to access a larger column of data—one of 2M columns of data within the page buffer, where M<N—with that larger column of data output via the fixed-width data interface over a second burst interval longer than the first burst interval.

Abstract: A storage system includes a management node and multiple storage nodes. Each storage node includes a first storage device of a first type (e.g., DRAM) and a second storage device of a second type (e.g., SCM), and a performance level of the first storage device is higher than the second storage device. The management node creates a globe cache including a first tier comprising the first storage device in each storage node, and a second tier comprising the second storage device in each storage node. The first tier is for storing data with a high access frequency, and the second tier is for storing data with a low access frequency. The management node monitors an access frequency of target data stored in the first tier. When the access frequency of the target data is lower than a threshold, the management node instructs the first storage node to migrate the target data from the first tier to the second tier of the globe cache.

Abstract: A processing system of a storage network operates by: receiving a write request to store a data object; selecting a selected memory type of a plurality of memory types to store the data object, based on object parameters associated with the data object; selecting a selected memory to store the data object, the selected memory having the selected memory type of the plurality of memory types; and facilitating storage of the data object in the selected memory having the selected memory type of the plurality of memory types, wherein the data object is dispersed error encoded and stored as a plurality of encoded data slices.

Abstract: Techniques are provided for data management across a persistent memory tier and a file system tier. A block within a persistent memory tier of a node is determined to have up-to-date data compared to a corresponding block within a file system tier of the node. The corresponding block may be marked as a dirty block within the file system tier. Location information of a location of the block within the persistent memory tier is encoded into a container associated with the corresponding block. In response to receiving a read operation, the location information is obtained from the container. The up-to-date data is retrieved from the block within the persistent memory tier using the location information for processing the read operation.

Abstract: Examples described herein relate to prioritizing read input/output (IO) queues in non-volatile memory express (NVME) storage devices. An NVME controller includes a host port, which may be associated with a host and communicate with NVME storage devices. A utilization time of the host port is determined. In response to determining that the utilization time of the host port is below a host port utilization threshold, the NVME controller may create a candidate list of NVME storage devices based on utilizations, throughputs, busy time periods, and IO request completions of the NVME storage devices. For each NVME storage device included in the candidate list, a number of read requests in a read IO queue at the NVME storage device may be determined. A priority rank may be assigned to the read IO queue at each NVME storage device based on the number of read requests in that read IO queue.

Abstract: The invention introduces a method, an apparatus and a non-transitory computer program product for storing data in flash memory. The method is performed by a processing unit when loading and executing program code of a flash translation layer to include: dividing storage space of a flash module into a first region and a second region; programming data belonging to a first partition type received from a host side into first physical blocks of the first region only; and programming data belonging to a second partition type received from the host side into the first physical blocks of the first region and the second physical blocks of the second region. With the region division and the policy for writing data into the regions in terms of data characteristics of different partition types, storage space of the flash module would be used more effective.

Abstract: Embodiments are directed towards a system and method for a cloud-based front end that may abstract and enable access to the underlying cloud-hosted elements and objects that may be part of a multi-tenant application, such as a search application. Search objects may be employed to access indexed objects. An amount of indexed data accessible to a user may be based on an index storage limit selected by the user, such that data that exceeds the index storage limit may continue to be indexed. Also, one or more projects can be elastically scaled for a user to provide resources that may meet the specific needs of each project.

Abstract: A data storage device includes a memory device and a controller coupled to the memory device. The controller is configured to receive key value (KV) pair data from a host device, where the KV pair data includes a key and a value, determine whether the KV pair data corresponds to a first tier or a second tier, where the second tier has a lower performance requirement than the first tier, and program the value of the KV pair data as padding data when the KV pair data corresponds to the second tier. The determining is based on a received hint of the KV pair data, a relative performance of the KV pair data, and a length of the KV pair data. The controller is configured reclassify the KV pair data based on a read frequency of the KV pair data.

Abstract: Improving the runtime and discovery recovery performance for cloud-based logical volume management systems when performing mirror write operations. A mirror write consistency check (MWCC) policy that incorporates aspects of Active MWCC policies and Passive MWCC policies are utilized to more efficiently ensure that data is properly mirrored from a first copy of a logical volume to the second copy of a logical volume (as well as to potentially multiple other copies of the logical volume).

Abstract: A data protection system configured to backup a time series database is provided. The data protection system may be integrated with or have access to consolidation policies of the time series database. The backup policy and backup retention policy are set by monitoring the consolidation policy and adjusting the backup policy to ensure that the data in the time series database is protected prior to being downscaled, discarded or otherwise consolidated.

Abstract: A method including, responsive to receiving a request identifying a volume and indicating a command to take a snapshot of the volume, mapping a second logical grouping of data to reference the first logical grouping of data, and remapping the first volume to map to the second logical grouping of data instead of the first logical grouping of data such that the first volume remains addressable with similar access permissions before and after creating the snapshot. The method also includes, in response to receiving a write request targeting the second logical grouping, splitting the second logical grouping into a plurality of ranges including a first range and a second range; wherein the first range of the second logical grouping maps to the first logical grouping, and the write request is performed on the second range of the second logical grouping.

Abstract: An initialization data memory space allocation system includes a memory system having a memory space that includes an initialization data bucket that reserves a contiguous subset of the memory space for initialization data. Each initialization engine that is coupled to the memory system is configured during initialization operations to allocate, for that initialization engine, a portion of the contiguous subset of the memory space reserved by the initialization data bucket, and then store initialization data in that portion of the contiguous subset of the memory space reserved by the initialization data bucket. A runtime engine that is coupled to the memory system is configured, during runtime operations, to claim the contiguous subset of the memory space reserved for initialization data by the initialization data bucket for runtime data, and store runtime data in at least a portion of the contiguous subset of the memory space.

Abstract: A method of operating a storage system is disclosed. The method includes determining a storage cluster among storage arrays of the storage system. Each storage array includes at least two controllers and at least one storage shelf. The at least two controllers are configured to function as both a primary controller for a first storage array and a secondary controller for a second storage array.

Abstract: A data storage device and method for enabling metadata-based seek points for media access are provided. In one embodiment, a data storage device is provided comprising a memory and a controller. The controller is configured to identify a plurality of frames in video data that differ from surrounding frames by more than a threshold amount; store identifiers of the plurality of frames in the memory; and send the identifiers to the host to enable quick playback of the video data by the host. Other embodiments are possible, and each of the embodiments can be used alone or together in combination.

Abstract: Embodiments of the present disclosure generally relate to storage devices, such as SSDs. A data storage device comprises an encrypted interface, one or more flash memory devices, and a controller configured to receive one or more workloads of data through the encrypted interface. Upon a threshold being met, the controller performs a diagnosis of one or more operating parameters of the one or more workloads of data. Based on the diagnosis, the data storage device is optimized by recalibrating one or more of: a partitioning of bits per cell of the one or more flash memory devices, one or more flash management parameters of the data storage device, and a programming rate of the storage device.

Abstract: Techniques are describe herein for associating storage management properties with a group of files of a database referred to herein as a “file group”. In this system, storage management properties are defined at the database-level. Thus, multiple databases can be stored across a single disk group, gaining the benefits of having multiple block access devices working in parallel, but each respective database may be associated with a respective file group in a one-to-one relationship, so that each database can have different storage management properties.

Abstract: A monitoring system for mapping and monitoring inter-application communications in a computing ecosystem is described. The monitoring system provides consolidated visibility to computing ecosystems by providing end-to-end mapping and monitoring of inter-application communications and events, changes, incidents, and status information of applications, services, and systems. As described, the monitoring system is configured to (a) identify communication paths linking the host devices, (b) generate an ecosystem map based on the communication paths, (c) transmit a monitoring signal to the network, (d) receive a monitoring response from the host devices in response to the monitoring signal including at least a first status, (e) process the monitoring response with the ecosystem map to generate an active ecosystem map, and (f) display the active ecosystem map including the host devices and at least one status associated with the host devices.

Abstract: A method, computer program product, and computing system for receiving data for storage in a storage system. The data may be written to a head entry of a log buffer, wherein the log buffer includes a plurality of data entries for flushing to the storage system. At least a portion of the plurality of data entries of the log buffer may be flushed, via a plurality of threads, to the storage system based upon, at least in part, a tail entry of the log buffer. A queue of committed data entries may be updated, via each thread of the plurality of threads, with one or more data entries of the log buffer flushed to the storage system by each thread. A new tail entry of the log buffer may be determined, via a thread of the plurality of threads, based upon, at least in part, the queue of committed data entries.

Abstract: At least some example embodiments provide a system-state monitoring method and device and a storage medium. The method includes determining a standard operation mode of a system, the standard operation mode including a plurality of operation states of the system in a unit time period. The method further includes determining, according to current operation data of the system, a current operation mode of the system and determining, by comparing the current operation mode with the standard operation mode, whether or not the system is in the standard operation mode. The plurality of operation states of the system are determined to be the standard operation mode, such that changes in system operation patterns can be readily detected, thereby facilitating a timely adjustment of the monitored system or peripheral mechanisms in cooperation therewith and improving system performance.

Abstract: According to one embodiment, a method identifies a plurality of parameters associated with one or more virtual machines to be backed up to a backup storage system and a number of available backup proxy sessions. The method further assigns each of the available backup proxy sessions to a virtual disk of the one or more virtual machines based on the plurality of parameters and the number of available backup proxy sessions. The method then initiates backup operations, wherein each assigned backup proxy session is to back up a corresponding virtual disk to which it is assigned.

Abstract: A semiconductor device includes a data bus, a data memory, a selector, a processor, and a debug controller. The selector is configured to be controlled by the debug controller to be in either a first selecting state in which the processor transmits a first signal to the data bus and a second selecting state in which the debug controller transmits a second signal to the data bus. The debug controller is configured to control the state of the selector based on the reception state of a predetermined command from an external device as well as the states of a read enable signal and a write enable signal from the processor such that, when the selector is in the second selecting state, the debug controller accesses the data bus via the selector.

Abstract: Computing devices, methods, and systems for switch-based free memory tracking in data center environments are disclosed. An exemplary switch integrated circuit (IC), which is used in a switched fabric or a network, can include a processing device and a tracking structure that is distributed with at least a second switch IC. The tracking structure tracks free memory units that are accessible in a first set of nodes by the second switch IC. The processing device receives a request for a number of free memory units. The processing device forwards the request to a node in the first set of nodes that has at least the number of free memory units or forwards the request to the second switch IC that has at least the number of free memory units or responds to the request with a response that indicates that the request could not be fulfilled.

Abstract: A memory device includes a memory block including a plurality of pages, a peripheral circuit configured to perform a first program operation for storing first page data and a second program operation for storing second page data after the first program operation, a status register configured to store status information, a cache program operation controller configured to control the peripheral circuit to load the second page data from an external controller when the first program operation is being performed, and a status register controller configured to store in the status register first failure information indicating whether the first program operation passes, store in the status register validity information indicating whether the first failure information is valid information within a predetermined time period from when the second program operation starts, and provide the external controller with the status information including the first failure information and the validity information.

Abstract: To set an appropriate buffer area in a storage system that performs hierarchical storage management. The storage system includes a storage device that provides a storage pool and a storage management unit that manages the storage pool in a tiered manner. The storage pool is provided with a first tier, a second tier, a third tier, and a third tier buffer which is a buffer area used as a buffer when reading or writing data from or to the third tier which is a buffer target tier. The storage management unit determines a size of the third tier buffer based on an access frequency of the third tier.

Abstract: An electronic control device includes a nonvolatile memory having allocated two storage areas that are exclusively switchable between an active state and an inactive state, the storage area in the active state being used to store a control program to be executed, and the storage area in the inactive state being used as a reserved area for updating the control program. In the electronic control device, when the control program is not updated, arbitrary data is written in the storage area in the inactive state.

Abstract: Disclosed are embodiments for providing batch performance using a stream processor. In one embodiment, a method is disclosed comprising receiving an event that includes a plurality of fields and extracting needed fields from the plurality of fields. The method then serializes the plurality of fields and generates a new event that includes the set of needed fields and a hidden field, the value of the hidden field comprising the serialized fields. The method then transmits the new event for processing using at least one processing stage of a stream processor. In response, the method reserializes a processed event generated by the stream processor and outputs the reserialized event to a downstream consumer.

Abstract: A method and a computer program product executed by a processor may include or perform various operations. The operations include periodically reading a wear level for each of a plurality of storage devices operating in a multi-tiered storage system which includes a first storage tier and a second storage tier that is a lower tier than the first storage tier. At least one storage device operates in the first storage tier and at least one storage device operates in the second storage tier. The operations further include identifying a first storage device of the plurality of storage devices that is operating in the first storage tier and has a wear level that is higher than an average wear level for the plurality of storage devices. The operations additionally include causing the first storage device to switch from operating in the first storage tier to operating in the second storage tier.