Abstract: An electro-optic module provides electro-optic signal drivers formed upon a semiconductor carrier having electrically conducting traces and passive circuit network filtering elements of electroceramic material with the electro-optic signal drivers being in electrical communication with the passive circuit elements and interface the module within a larger computing or communications system.

Abstract: A data processing system (2) incorporates a first exclusive cache memory (8, 10) and a second exclusive cache memory (14). A snoop filter (18) located together with the second exclusive cache memory on one side of the communication interface (12) serves to track entries within the first exclusive cache memory. The snoop filter includes retention data storage circuitry to store retention data for controlling retention of cache entries within the second exclusive cache memory. Retention data transfer circuitry (20) serves to transfer the retention data to and from the retention data storage circuitry within the snoop filter and the second cache memory as the cache entries concerned are transferred between the second exclusive cache memory and the first exclusive cache memory.

Abstract: In one non-limiting embodiment, a method is disclosed for performing a storage device operation on a die is provide having steps of choosing a storage device operation to perform, estimating which die is related to the storage device operation chosen to be performed and performing the storage device operation at the die based on the estimating.

Abstract: A data storage device is provided. The data storage device includes a flash memory and a controller. The flash memory stores a firmware that includes a plurality of mode page settings, and each mode page setting includes a plurality of mode parameters. The controller receives a data out message arranged to rewrite a first mode page setting among the plurality of mode page settings from a host. The controller determines whether the data out message will change the mode parameters which cannot be rewritten in the first mode page setting by performing bitwise logic operations on a new mode page setting in the data out message, preset values of the plurality of mode parameters of the first mode page setting, and a rewriteable setting for each bit of the first mode page setting.

Abstract: An example memory sub-system includes a memory device and a processing device, operatively coupled to the memory device. The processing device is configured to maintain a logical-to-physical (L2P) table, wherein a region of the L2P table is cached in a volatile memory; maintain a write count reflecting a number of bytes written to the memory device; maintain a cache miss count reflecting a number of cache misses with respect to a cache of the L2P table; responsive to determining that a value of a predetermined function of the write count and the cache miss count exceeds a threshold value, copy the region of the L2P table to a non-volatile memory.

Abstract: Various implementations described herein relate to systems and methods for managing selective erasure in a Solid-State Drive (SSD) including receiving a selective erase command corresponding to erasing valid and invalid data mapped to a logical address and in response to receiving the selective erase command, erasing blocks in which one or more pages mapped to the logical address are located based on a mapping table that maps the logical address to the one or more pages. Both valid data and invalid data may be physically stored in one or more pages.

Abstract: A method of managing storage space for a metadata consistency checking procedure (MCCP) is provided. The method includes (a) tracking an amount of metadata and an amount of user data organized by the metadata; (b) provisioning a quantity of storage dedicated to the MCCP based, at least in part, on a ratio of the amount of metadata to the amount of user data; and (c) upon initiation of the MCCP, building tracking structures within the provisioned storage dedicated to the MCCP. An apparatus, system, and computer program product for performing a similar method are also provided.

Abstract: In an approach to intelligently choosing transport channels across protocols by drive type, one or more transport channels on a host are detected. One or more storage drive tiers on a target are detected. The one or more transport channels are mapped to the one or more storage drive tiers, based on performance. A transfer of a data between a host and the target is completed, using each transport channel and each storage drive tier.

Abstract: In an example, there is disclosed a host-fabric interface (HFI), including: an interconnect interface to communicatively couple the HFI to an interconnect; a network interface to communicatively couple the HFI to a network; network interface logic to provide communication between the interconnect and the network; a coprocessor configured to provide an offloaded function for the network; a memory; and a caching agent configured to: designate a region of the memory as a shared memory between the HFI and a core communicatively coupled to the HFI via the interconnect; receive a memory operation directed to the shared memory; and issue a memory instruction to the memory according to the memory operation.

Abstract: Techniques for processing I/O operations may include: receiving a write I/O operation that writes first data to a target logical address in a logical address range, wherein physical storage is currently unallocated for the target logical address; selecting a first storage tier from which to allocate first physical storage for storing the first data, wherein said selecting uses first I/O access information characterizing I/O activity of a first logical region and performance and capability characteristics of storage tiers to select the first storage tier; allocating first physical storage from the first storage tier; and storing the first data in the first physical storage. The target logical address may be located in the first logical region. The target logical address may alternatively be located in another logical region predicted, based on temporal trends and application profile information, to include the target logical address at a future point in time.

Abstract: According to one embodiment, a computing system transmits to a storage device a write request designating a first logical address for identifying first data to be written and a length of the first data. The computing system receives from the storage device the first logical address and a first physical address indicative of both of a first block selected from blocks except a defective block by the storage device, and a first physical storage location in the first block to which the first data is written. The computing system updates a first table which manages mapping between logical addresses and physical addresses of the storage device and maps the first physical address to the first logical address.

Abstract: Virtual machine synchronization and recovery is disclosed. At a first instance in time, a first snapshot request to generate a first snapshot of a virtual machine (VM) is received. The VM utilizes a storage unit. A first snapshot layer is generated for the storage unit. The first snapshot layer preserves a state of the storage unit at the first instance in time. A first VM record that corresponds to the first snapshot request and that includes a first VM record identifier (ID) is generated. The first VM record ID is stored in metadata associated with the first snapshot layer, and the first VM record is stored in a first location.

Abstract: A transaction recording method associated with a page-oriented non-volatile memory is disclosed. The method includes identifying page requiring one or more update for implementing a defined transaction. Further, the method includes replicating the page in a non-volatile buffer. The method further includes updating the identified page with the transaction contents. The transaction is committed if the page is updated without interruption else the entire transaction is rolled-back.

Abstract: A method, computer program product, and computing system for writing, from a first node to a second node, a first portion of data from a memory pool in the first node defined by, at least in part, a first pointer. One or more input/output (IO) operations may be received while writing the first portion of data to the second node. Data from the one or more IO operations may be stored within the memory pool after the first pointer.

Abstract: A storage system which stores a plurality of volumes and performs an I/O process on the volume includes a processor. The volume includes a first volume and a second volume which is copied from the first volume by snapshot. In a case where a write request is received, the processor determines whether a volume of a copy source related to a target volume of the write request is a volume of which a storage region is a valid region where a data amount reduction process is applied. Depending on a case where the volume of the copy source is a volume of which the storage region is a valid region or a case where the volume of the copy source is a volume of which the storage region is not a valid region, the processor switches and performs a process of creating the second volume related to the snapshot.

Abstract: An aperiodic snapshot recommendation engine running in a storage system aperiodically generates hints that a new snapshot should be created. The hints are sent to host servers to prompt snapshot generation commands to be sent to the storage system. The hints may be generated based on current storage system workload conditions using a model of a snapshot scheduler running on a host server for which the storage system maintains data. The model may be created using a machine learning technique. For example, machine learning may be used to model the host's snapshot scheduler in terms of storage system workload conditions existing when the snapshot scheduler commands generation of new snapshots during a training phase.

Abstract: Extents of data are promoted or demoted between hierarchical storage tiers based on temporal locality of access captured with a primary count-min-sketch based on monitored input-output commands. Extents may also be promoted based on spatial locality of access captured with a secondary count-min-sketch based on the monitored input-output commands. The count-min-sketches may be implemented in a tiering engine of a storage array or in the flash translation layers of solid-state drives. The flash translation layers may generate tiering hints that are provided to a tiering engine.

Abstract: A system and method of recognizing a hard disk movement, the system and method including recognizing hard disk information recorded in a hard disk in response to the hard disk being moved to a slot in a hard disk array, determining the movement type of the hard disk based on the recognized hard disk information, judging validity of the hard disk movement based on the movement type, and updating the hard disk information of the hard disk in response to the hard disk movement being judged as valid, wherein the hard disk information comprises position information of the hard disk in the hard disk array.

Abstract: In described examples, a processor system includes a processor core generating memory transactions, a lower level cache memory with a lower memory controller, and a higher level cache memory with a higher memory controller having a memory pipeline. The higher memory controller is connected to the lower memory controller by a bypass path that skips the memory pipeline. The higher memory controller: determines whether a memory transaction is a bypass write, which is a memory write request indicated not to result in a corresponding write being directed to the higher level cache memory; if the memory transaction is determined a bypass write, determines whether a memory transaction that prevents passing is in the memory pipeline; and if no transaction that prevents passing is determined to be in the memory pipeline, sends the memory transaction to the lower memory controller using the bypass path.

Abstract: A backup orchestrator for providing backup services to entities includes storage for storing backup windows during which backup storages are predicted to be able to service backup storage workloads; and a backup manager that identifies an occurrence of a backup generation event for an entity of the entities; in response to identifying the backup generation event: matches workload characteristics for generating a backup of the entity to a backup window of the backup windows that is associated with a backup storage of the backup storages; and generates the backup for the entity during the backup window and store the backup in the backup storage.