Abstract: A system includes multiple nodes that communicate among one another. Each of the multiple nodes includes at least one data storage container. The system also includes a sender sliding window (SSW) that controls sending of data from at least one node of the multiple nodes to at least one other node of the multiple nodes. The system further includes a receiver sliding window (RSW) that controls receiving of the data from the at least one node of the multiple nodes at the at least one other node of the multiple nodes. At least one of the SSW or the RSW is sharable amongst more than one node of the multiple nodes.

Abstract: The present disclosure relates to methods of manufacturing at least a portion of a magnetic layer of a magnetic recording disk. The methods include forming a plurality of sacrificial, discrete structures via imprint lithography. The sacrificial, discrete structures are used to form a plurality of three-dimensional segregant structures in a magnetic layer of the magnetic recording disk. The present disclosure also relates to corresponding magnetic recording disks.

Abstract: A cooling assembly includes an air mover and a vent panel coupled to the air mover. The vent panel includes an inlet. The cooling assembly includes a vane that is rotatable around a central vertical axis of the vane between an open position and a closed position to open and close the inlet.

Abstract: Systems and methods are disclosed for synchronous writing of a grain patterned medium. The systems and methods can be implemented within a data storage device having a grain patterned medium. Further, a calibration process to determine a count of bits between servo wedges can be implemented in manufacturing, within the data storage device, or both. In some examples, the data storage device, during operation, can utilize the count of bits to perform synchronous writing, determine write errors, or both. Further, the servo wedge of the grain patterned medium may be patterned with a same or similar grain pattern as the data area that follows the servo wedge. Such a data storage device can implement a single clock for reading a servo wedge and writing a data area.

Abstract: Systems and methods are disclosed for phase locking of a clock. In some embodiments, a phase locked clock (PLC) module can phase-lock a write clock to a media written with multiple servo zones of different frequencies. In some implementations, this can be utilized to perform a self-servo write (SSW) of a disc surface within a hard disc drive (HDD). A PLC module can perform a method of writing with a single frequency phase coherently while a read element passes over servo zones with different frequencies. While the PLC module can perform such methods for a SSW process, the methods can also be utilized for other applications that can benefit from writing with a single frequency phase coherently based on servo zones with different frequencies.

Abstract: A cooling assembly includes a panel defining an opening, a cooling unit including an output and coupled to the panel such that the output at least partially covers the opening of the panel, and spring-loaded latch assemblies coupled to the panel and configured to couple the cooling assembly to an enclosure.

Abstract: A first wafer has a first stop layer deposited on a substrate, the substrate used to form a base support structure. A second wafer has a second stop layer deposited on a sacrificial substrate, and a filter layer deposited on the second stop layer. A rib layer is deposited on one of: the first stop layer of the first layer; or a third stop layer that is deposited over the filter layer. A rib pattern is formed in the rib layer. The first and second wafers are flip bonded such that the rib pattern is joined between the filter layer and the first stop layer. Elongated voids are formed within the filter layer. The base support structure is formed within the substrate of the first wafer such that there is a fluid flow path between the base support structure, the rib layer, and the elongated voids of the filter layer.

Abstract: The present disclosure relates to electronic devices that include a composition that actively generates a gaseous oxidizing agent component within the interior gas space of the electronic device. The present disclosure also relates to electronic devices that include a container that includes a gaseous oxidizing agent component in a manner that the gaseous oxidizing component can transfer from the container to the interior gas space of the electronic device. The present disclosure also involves related methods.

Abstract: Apparatus and method for managing metadata in a data storage device such as a solid-state drive (SSD). The metadata are stored in combined (combo) pages in a non-volatile memory (NVM) each having first and second level map entries. The second level map entries provide a logical-to-physical address translation layer for user data blocks stored to the NVM, and the first level map entries describe the second level map entries in the combo page. A global map structure is accessed to identify a selected combo page in the NVM associated with a pending access command. The first and second level map entries are retrieved from the combo page, and the second level map entries are used to identify a target location for the transfer of user data blocks to or from the NVM.

Abstract: Apparatus and method for performing real-time monitoring of server-side resources required to satisfy a client-side request in a distributed data storage environment, such as in a cloud computing or HPC (high performance computing) network. A client device is configured to issue a service request to carry out a service application associated with one or more server nodes. A request scheduler forwards the service request from the client device to a selected server node associated with the service request. A service log accumulates entries associated with data transfer operations carried out by the server node responsive to the service request over each of a succession of time periods. A service monitor accumulates, for each of the succession of time periods, information associated with the data transfer operations. A monitor tool aggregates the cumulative information to provide an indication of server-side resources utilized to satisfy the service request.

Abstract: A data storage device includes at least one data storage disc having at least one data storage surface, and at least one read head configured to communicate with the at least one data storage surface. The data storage device also includes a controller communicatively coupled to the at least one read head. The controller is configured to determine a fly height for the at least one read head over the at least one data storage surface as a function of a read workload associated with the at least one data storage surface or as a function of an ability to satisfy a read request to the at least one data storage surface on a first read attempt.

Abstract: Read parameter estimation techniques are provided that obtain information from multiple read operations to customize read parameters for data recovery. One method comprises performing the following steps, in response to a decoding failure of a codeword of the memory: obtaining at least three read values of the codeword; calculating a signal counts metric value from the at least three reads; computing an optimal reference voltage offset from the signal counts metric and a correlation between optimal reference voltage offsets and a signal counts metric associated with the memory; determining a new center read reference voltage based on a current center reference voltage and the optimal reference voltage offset and performing at least one subsequent read of the codeword following the decoding failure utilizing the new center read reference voltage.

Abstract: A tray assembly for positioning data storage devices is disclosed. The tray assembly includes a base, a backplane circuit board coupled to the base, an electrical connector coupled to the backplane circuit board, a first support bracket coupled to the base and moveable with respect to the base and the backplane circuit board, and a second support bracket coupled to the base. The second support bracket opposes the first support bracket and is moveable towards and away from the first support bracket to adjust a distance between the first support bracket and the second support bracket.

Abstract: A method for manufacturing electrical connector assemblies is disclosed. The electrical connector assemblies include an electrical interposer and a first electrical receptacle. The method includes positioning a fixture coupled to or including an array of the first electrical receptacles such that each of the first electrical receptacles aligns with one of the electrical interposers on an assembly with an array of the electrical interposers. The method further includes reflowing solder to mechanically and electrically couple the array of the first electrical receptacles to the array of the electrical interposers.

Abstract: Method and apparatus for managing data in a storage device, such as a solid-state drive (SSD). In some embodiments, a main memory has memory cells arranged on dies arranged as die sets accessible using parallel channels. A controller is configured to arbitrate resources required by access commands to transfer data to or from the main memory using the parallel channels, to monitor an occurrence rate of collisions between commands requiring an overlapping set of the resources, and to adjust a ratio among different types of commands executed by the controller responsive to the occurrence rate of the collisions. In further embodiments, the controller may divide a full command into multiple partial commands, each of which are executed as the associated system resources become available. In some cases, the ratio is established between read commands and write commands issued to the main memory.

Abstract: Method and apparatus for managing data in a storage device, such as a solid-state drive (SSD). A non-volatile memory (NVM) is arranged into multiple garbage collection units (GCUs) each separately erasable and allocatable as a unit. Read circuitry applies read voltages to memory cells in the GCUs to sense a programmed state of the memory cells. Calibration circuitry groups different memory cells from different GCUs into calibration groups that share a selected set of read voltages. A read command queue accumulates pending read commands to transfer data from the NVM to a local read buffer. Read command coalescing circuitry coalesces selected read commands from the queue into a combined command for execution as a single batch command. The combined batch command may include read voltages for use in retrieval of the requested data.

Abstract: Method and apparatus for managing data in a storage device, such as a solid-state drive (SSD). A data storage device includes a main non-volatile memory (NVM) and a command queue that lists pending data transfer commands to transfer data between the NVM and a local memory. A collision manager predicts future collisions among the pending data transfer commands, such as but not limited to commands involving pending host commands from a host. A storage manager enacts a change in a storage policy to reduce a future rate of the predicted future collisions. The change in storage policy may involve duplication of write data so that the write data are written to multiple locations within the NVM. The change in storage policy may further involve a pre-emptive garbage collection operation upon an existing location to distribute current version data blocks to multiple locations within the NVM.

Abstract: The present disclosure includes methods of lapping that include energizing one or more elements that are located proximal to a first magnetoresistive element in a transducer region and generate heat and cause the first magnetoresistive element to selectively expand in the lapping direction relative to one or more other magnetoresistive elements. The present disclosure also includes methods of lapping that use one or more thermal sensors located proximal to the first magnetoresistive element to help control lapping in the lapping direction. The present disclosure includes related lapping systems and sliders.

Abstract: A data storage system can connect a data storage controller to a host and a data storage device. A first reference state corresponding to a first zone of the data storage device can be incremented in response to a first version of data being assigned to the first zone by the data storage controller. A second version of the data may be written to a second zone of the data storage device prior to populating a recently freed list with the first zone having an incorrect reference state. The first zone can be allocated by the data storage controller for new data without altering the incorrect reference state that is subsequently written to the first zone as directed by the data storage controller.

Abstract: Methods, apparatuses, and computer-readable media for streaming arbitrarily large amounts of data through computational storage programs of a computational storage device. A computational storage device comprises a storage media, a computational storage processor, and a controller. A firmware of the controller comprises a plurality of streaming drivers, each associated with a data source or data destination of the storage device. The firmware further comprises a buffer abstraction layer operable to read data from a data source through an associated ingress streaming driver of the plurality of streaming drivers to provide a source data stream for a computational storage program executing on the computational storage processor. The buffer abstraction layer is further operable to receive a destination data stream from the computational storage program and write data to a data destination through an associated egress streaming driver of the plurality of streaming drivers.