Abstract: Techniques involve determining updated disk sets. The techniques further involve determining, from the updated disk sets, a target disk set for a storage unit associated with a plurality of storage disks. The techniques further involve determining position information of disk slices corresponding to the storage unit in the plurality of storage disks, in which the position information indicates respective updated disk sets in which the disk slices are located. The techniques further involve in accordance with a determination that an updated disk set indicated by position information of at least one of the disk slices is different from the target disk set, moving data in the at least one disk slice to the target disk set. Accordingly, an arrangement of a storage units across different disk sets can be avoided, and utilization rates of a plurality of storage disks can be made more uniform.

Abstract: Systems and methods for metadata tag inheritance are disclosed. The methods include maintaining a plurality of data storage systems including at least one tiered data storage system in communication with an external metadata management system, operating the metadata management system to store metadata corresponding to data residing on the plurality of data storage systems as a plurality of entries, detecting an execution of a data operation command in the tiered data storage system that causes movement of a data set from a source storage tier to a destination storage tier, and in response to detecting the execution of the data operation command, operating the metadata management system to create a new metadata entry corresponding to the execution of the data operation command. The new metadata entry includes at least one custom tag created before the execution of the data operation command.

Abstract: A host memory buffer is configured as a write cache for prioritizing read operations. When a peripheral device (such as a solid-state drive) receives a mixture of read requests and write requests, the write requests may be suspended or deferred to first execute the read requests. The write requests may be cached to the host memory buffer, thus allowing the peripheral device to process the read requests for relatively immediate response. Once the read requests are completed, the peripheral device may begin executing a queue of the write requests stored to the host memory buffer. This caching strategy results in a thirty percent (30%) improvement in drive performance.

Abstract: A method, computer program product, and computer system for accessing, by a first storage processor (SP) of a virtual storage appliance, a storage device, wherein the storage device may be accessed by the first SP while all internal networks associated with the virtual storage appliance are down. A second SP of the virtual storage appliance may access the storage device, wherein the storage device is shared between the first SP and the second SP and includes state information associated with one of the first SP and the second SP, and wherein the storage device may be accessed by the second SP while all the internal networks associated with the virtual storage appliance are down. One or more clustering decisions associated with one of the first SP and the second SP may be executed based upon, at least in part, the state information associated with one of the first SP and the second SP accessed while all the internal networks associated with the virtual storage appliance are down.

Abstract: Provided is an operating method of a memory system including a plurality of logical address groups each having a preset logical address range. The operation method may include: selecting a victim block; selecting a plurality of target blocks among empty blocks; mapping at least one logical address group of the logical address groups to each of the target blocks; determining a first logical address group including a logical address of first valid data stored in the victim block, among the logical address groups; and backing up the first valid data into a first target block mapped to the first logical address group among the target blocks.

Abstract: An apparatus and method for dynamic provisioning and traffic control on a memory fabric.

Abstract: Apparatus and methods are disclosed, including identifying inactive data in a group of volatile memory cells of a host device, assembling identified inactive data in an offload unit of the group of volatile memory cells, and writing the offload unit of inactive data to a group of non-volatile memory cells of a storage system when the amount of inactive data in the offload unit reaches a threshold.

Abstract: An example operation may include one or more of connecting, by a data aggregation node, to a blockchain configured to store data, configuring, by the data aggregation node, a transformation of the data, instantiating, by the data aggregation node, at least one rollup blockchain, transforming, by the data aggregation node, the data based on the configuration, executing, by the data aggregation node, a smart contract to populate the transformed data into the at least one rollup blockchain, and archiving the data on a data store outside of the blockchain.

Abstract: The present invention encapsulates content and provides the encapsulated content to a use. A capsule stores identification information in structure information in a metadata unit thereof, and identification information such as URL and URN is stored therein. A capsule engine unit decodes the identification information. In the case of URL, the capsule engine unit directly obtains the entity of data or programs constituting the content from a server, which is an external storage. In the case of URN, the capsule engine unit inquires URL to a dictionary server such as a metadata repository, and obtains the URL from the server. Therefore, it is not necessary to install the entity of data or programs in a data cache unit, and it is possible to easily deliver and distribute the capsule.

Abstract: A method includes determining, by a storage unit of a dispersed storage network (DSN), a storage unit memory pressure level. When the storage unit memory pressure level compares unfavorably to a threshold, the method further includes, in response to a data access request regarding an encoded data slice from a computing device, determining whether the data access request includes an override message or a non-override message. When the data access request includes the non-override message, the method includes generating a storage unit memory pressure level message in accordance with the storage unit memory pressure level and the type of data access request, sending the storage unit memory pressure level message to the computing device, and processing the data access request in accordance with the storage unit memory pressure level message. When the data access request includes the override message, the method further includes processing the data access request.

Abstract: Apparatus and methods are disclosed, including identifying and tagging data in a group of volatile memory cells of a host device to be written to and maintained contiguously on non-volatile memory of a storage system, and writing the tagged data to the group of non-volatile memory cells. A host device includes a host processor and the group of volatile memory cells, and a storage system includes the group of non-volatile memory cells.

Abstract: A computer-implemented method, a computer program product, and a computer system for optimizing timing for migrating data. The computer system sets a migration required flag for each of first tapes, in response to determining an estimated time period required for data migration from the first tapes to second tapes being smaller than an expiration time period of the first tapes. The computer system sets the migration required flag for a respective one of the first tapes, in response to determining the estimated time period being not smaller than the expiration time period and a predetermined time period has passed for the respective one of the first tapes. Data on tapes that migration required flags are set is to be migrated to the second tapes.

Abstract: A method, computer program product, and computing system for processing higher-level metadata portions to identify each occurrence of a pointer to a lower-level metadata portion; and generating a pointer record within a memory device that memorializes each occurrence of a pointer to a lower-level metadata portion and identifies a specific lower-level metadata portion to which the pointer is pointing, thus resulting in a plurality of pointer records.

Abstract: In a multi-storage node system including a plurality of storage nodes, a plurality of storage nodes include a plurality of drives that store data and a control unit that controls writing of data to the drives. The control unit divides storage areas of the plurality of drives into a plurality of physical chunks, allocates the divided physical chunks to logical chunks, and stores data. A plurality of storage nodes are divided into fault sets affected by a single failure and manage the multi-storage node system. The control unit of one primary node that manages the multi-storage node system among a plurality of storage nodes includes a database for managing allocation of the physical chunks of a plurality of storage nodes to the logical chunks for each drive, each storage node, or for each fault set.

Abstract: Embodiments for volume management in a data storage environment. A network sniffing operation between virtual machines is performed to detect relationships between the virtual machines and thereby identify candidates for subsequent storage volume affiliation operations. The network sniffing operation detects the relationships based on network traffic or alternative similarity attributes of an existing placement of the virtual machines thereby deducing affiliations of storage volumes between the virtual machines such that, during the storage volume affiliation operations, the existing placement of the virtual machines is not modified. The identified candidates to be added to a new or existing storage volume affiliation operation are recommended to a user via a prompt.

Abstract: A processing system includes a plurality of processor cores formed in a first layer of an integrated circuit device and a plurality of partitions of memory formed in one or more second layers of the integrated circuit device. The one or more second layers are deployed in a stacked configuration with the first layer. Each of the partitions is associated with a subset of the processor cores that have overlapping footprints with the partitions. The processing system also includes first memory paths between the processor cores and their corresponding subsets of partitions. The processing system further includes second memory paths between the processor cores and the partitions.

Abstract: The systems and methods herein permit storage systems to correctly perform data recovery, such as direct access recovery, of Network Data Management Protocol (“NDMP”) backup data that was modified prior to being stored in secondary storage media, such as tape. The systems and methods permit NDMP backup data to be encrypted, compressed, deduplicated, and/or otherwise modified prior to storage. The systems and methods herein also permit a user to perform a precautionary snapshot of the current state of data (e.g., primary data) prior to reverting data to a previous state using point-in-time data.

Abstract: In an example, a device includes a memory and a processor core coupled to the memory via a memory management unit (MMU). The device also includes a system MMU (SMMU) cross-referencing virtual addresses (VAs) with intermediate physical addresses (IPAs) and IPAs with physical addresses (PAs). The device further includes a physical address table (PAT) cross-referencing IPAs with each other and cross-referencing PAs with each other. The device also includes a peripheral virtualization unit (PVU) cross-referencing IPAs with PAs, and a routing circuit coupled to the memory, the SMMU, the PAT, and the PVU. The routing circuit is configured to receive a request comprising an address and an attribute and to route the request through at least one of the SMMU, the PAT, or the PVU based on the address and the attribute.

Abstract: A data storage device may include: a memory device; and a controller configured to control an operation of the memory device. The controller may include a first CPU and a second CPU including a plurality of cores, wherein the first CPU compares P/E (Program/Erase) average counts for the plurality of cores of the second CPU, and performs a remapping operation of changing a core which is mapped to logical block addresses received from a host.

Abstract: A data processing method for a solid state drive includes the following steps. When a write command is received, the write command is executed to store a write data into a first number of blocks of the plural blocks, a block-closing action is performed to generate a first number of used blocks, and the logical-to-physical table is updated. When a trim command is received, the trim command is executed to change a second number of used blocks to a second number of unused blocks, a physical-to-logical data corresponding to the second number of used blocks is stored into a trim block of the non-volatile memory, and the logical-to-physical table is updated. A backup action is performed at plural time points to generate plural backup contents corresponding to the plural time points, respectively. The plural backup contents are stored into the non-volatile memory.