Abstract: A magnetic tape device. The angle ? formed by the axis of the element array of the magnetic head with respect to a width direction of the magnetic tape is changed during running of the magnetic tape in the magnetic tape device. In a case where predetermined storage is defined as one cycle, a maximum value of an absolute value of a difference between a servo band spacing obtained before performing the storage and a servo band spacing obtained after the storage of N cycles is defined as A, and N is set to 1, 2, 3, 4, or 5, a medium life calculated by a linear function of A and a logarithm loge T of T, that are derived from a value of A and a value of the logarithm loge T of total storage time T of the storage of N cycles is 5 years or longer.

Abstract: A system can identify a first group of time-series telemetry data that represents performance metrics of a computing device, wherein the first group of time-series telemetry data identifies respective first values and corresponding respective first timestamps. The system can create a second group of time-series telemetry data that identifies second timestamps. The system can populate the second group of time-series telemetry data with the respective first values at respective first locations of the second group of time-series telemetry data that correspond to the respective first timestamps of the respective first values. The system can create a tensor that identifies third timestamps. The system can populate the tensor with the respective first values at respective second locations of the tensor that correspond to the respective first timestamps of the respective first values, wherein populating the tensor comprises combining two values of the respective first values.

Abstract: A processing device stores a result of reading a reference servo pattern by a servo reading element from a magnetic tape in which the reference servo pattern is recorded, in the storage medium as an ideal waveform signal indicating an ideal waveform, acquires a servo band signal which is a result of reading a servo pattern recorded in a servo band of the magnetic tape by the servo reading element, and detects a servo pattern signal which is a result of reading the servo pattern by the servo reading element by comparing the ideal waveform signal stored in the storage medium with the servo band signal. The magnetic tape has a data band. The reference servo pattern is recorded in the data band.

Abstract: An information handling system includes a host controller, a memory device, and a processor. The memory device receives I/O commands from the host controller. The memory device includes a processor. The processor sets an initial idle time prior to transition (ITPT) setting as a current ITPT setting for a memory device of an information handling system, and monitors input/output (I/O) commands from a host in the information handling system. While monitoring the I/O commands, the processor increases a first counter in response to the memory device entering a non-operational mode based on the current ITPT setting, and increases a second counter in response to the memory device entering an operational mode within a particular amount of time from when the memory device entered the non-operational mode. The processor further varies the current ITPT setting based on a current ratio of the second counter to the first counter.

Abstract: The present disclosure generally relates to a magnetic recording head comprising a spintronic device. The spintronic device is disposed between a main pole and a trailing shield of the magnetic recording head. The spintronic device comprises a multilayer spacer layer comprising a Cu layer in contact with a spin torque layer and a spin transparent texture layer disposed on the Cu layer, the spin transparent texture layer comprising AgSn or AgZn. A multilayer notch comprising a CoFe layer is disposed over the spin transparent texture layer of the multilayer spacer layer and a Heusler alloy layer is disposed on the CoFe layer, the Heusler alloy layer comprising CoMnGe, CoFeGe, or CoFeMnGe. The multilayer spacer layer and the multilayer notch result in the spintronic device having a high spin polarization and a reduced critical current.

Abstract: A magnetic tape device. The angle ? formed by the axis of the element array of the magnetic head with respect to a width direction of the magnetic tape is changed during running of the magnetic tape in the magnetic tape device. In a case where predetermined storage is defined as one cycle, a maximum value of an absolute value of a difference between a servo band spacing obtained before performing the storage and a servo band spacing obtained after the storage of N cycles is defined as A, and N is set to 1, 2, 3, 4, or 5, a medium life calculated by a linear function of A and a logarithm loge T of T, that are derived from a value of A and a value of the logarithm loge T of total storage time T of the storage of N cycles is 5 years or longer.

Abstract: A multi-slope load/unload ramp for a hard disk drive includes an inner first portion having a non-horizontal first slope and an adjacent outer second portion having a different non-horizontal second slope. The first slope may be steeper than the second slope, and the ramp may further include a third portion adjacent to the second portion and also having a third slope steeper than the second slope, with the ramp configured for positioning the first and second portions to overlap the disk while the third segment may be in part outside the disk. The second slope may be steeper than the first slope, with the ramp configured for positioning the first portion to overlap the disk while the second portion may be in part outside of the disk. Hence, any slider rebound from the steeper portions would occur outside of the disk and avoid a slider-disk crash.

Abstract: A method for generating calibration data useful for calibrating a plurality of tape cartridges includes the steps of selecting a subset of tape cartridges from the plurality of tape cartridges, the subset of tape cartridges having fewer tape cartridges than the plurality of tape cartridges; calibrating each of the subset of tape cartridges using a plurality of tape drives to generate global calibration data; selecting one of the plurality of tape cartridges that is not included within the subset of tape cartridges; and calibrating the one of the plurality of tape cartridges using the global calibration data generated via the calibrating of each of the subset of tape cartridges.

Abstract: Systems and methods related to hydrodynamic bearings for use in X-ray sources are provided. In one aspect, a hydrodynamic bearing system includes a sleeve assembly including a cross-member fluidically dividing a first interior cavity from a second interior cavity, a first shaft positioned in the first interior cavity, and a second shaft positioned in the second interior cavity. The hydrodynamic bearing system may further include a first journal bearing including a first fluid interface surrounding at least a portion of the first cantilever shaft and configured to support radial loads and a second journal bearing including a second fluid interface surrounding at least a portion of the second cantilever shaft and configured to support radial loads.

Abstract: An electronic apparatus includes an input unit configured to input a time code from an external device, a determination unit configured to determine whether or not a time address of the time code input from the input unit is advancing, a recording unit configured to record a video signal, and a control unit configured to control to cause the recording unit to start recording of the video signal in a case that it is determined by the determination unit that the time address is advancing.

Abstract: A noncontact communication medium includes a coil and a processor mounted on a magnetic tape cartridge. The processor communicates with a communicatee by coupling between the coil and the communicatee by electromagnetic induction through an external magnetic field applied from the communicatee. The communicatee merges a command into the external magnetic field. The processor executes processing corresponding to the command merged into the external magnetic field. The processor changes a response time of the processor in response to the command, according to a characteristic of at least one of the magnetic tape cartridge, the noncontact communication medium, or the communicatee.

Abstract: Aspects of the present disclosure generally relate to a magnetic recording head of a spintronic device, such as a write head of a data storage device, for example a magnetic media drive. In one example, a magnetic recording head includes a main pole, a trailing shield, and a spin torque layer (STL) between the main pole and the trailing shield. The magnetic recording head includes a first layer structure on the main pole, and the first layer structure includes a negative polarization layer. The magnetic recording head also includes a second layer structure disposed on the negative polarization layer and between the negative polarization layer and the STL. The negative polarization layer is an FeCr layer. The second layer structure includes a Cr layer disposed on the FeCr layer, and a Cu layer disposed on the Cr layer and between the Cr layer and the STL.

Abstract: A method for indexing a tape for unmounting from a tape drive is discussed. The method can determine that an update has been made to the tape since it was last mounted. The method can identify a tape head position with respect to the tape, the tape including a data partition and an index partition. The method can identify first position and a second position on the tape. The method can determine first distance, a length of tape between first position and tape head position. The method can determine second distance, a length of tape between first position and second position. The method can determine that first distance is less than second distance. The method can reposition the tape to a primary section and write the metadata index. The method can reposition tape to the second position write a data index beginning at the second position of the data partition.

Abstract: A computer-implemented method for indexing a tape for unmounting from a tape drive. The computer-implemented method includes: receiving a request to unmount the tape from the tape drive, wherein the tape includes an index partition and a data partition, determining that an update to the tape is not reflected in any data index written in the data partition, appending a new data index at the end of the last written data file in the data partition, wherein the new data index includes information associated with the update to the tape, unthreading the tape from the tape drive, wherein unthreading the tape from the tape drive is performed at low tension writing a metadata index to an ancillary storage device, wherein the metadata index includes information associated with the update to the tape.

Abstract: At least one example embodiment provides a method for transferring a request in a storage device. The method includes generating an asynchronous command completion that corresponds to an asynchronous event request command and has a wall clock time request, receiving a set features command having a timestamp, the set features command corresponding to the asynchronous command completion, and updating the wall clock time using the timestamp.

Abstract: A recording and reproducing device includes: a reading unit that reads production information from a recording medium of a magnetic tape cartridge, the magnetic tape cartridge including a magnetic tape, and the recording medium other than the magnetic tape and on which the production information is recorded, the production information being information regarding the magnetic tape obtained in a production process of the magnetic tape cartridge; and a control unit that performs, as an initialization process of the magnetic tape cartridge, control of recording the production information on the magnetic tape and invalidating the production information in the recording medium.

Abstract: Systems and methods related to hydrodynamic bearings are provided. One example hydrodynamic bearing system includes a sleeve assembly including a cross-member fluidically dividing a first interior cavity from a second interior cavity, a first shaft positioned in the first interior cavity, and a second shaft positioned in the second interior cavity. The hydrodynamic bearing system further includes a first journal bearing including a first fluid interface surrounding at least a portion of the first cantilever shaft and configured to support radial loads and a second journal bearing including a second fluid interface surrounding at least a portion of the second cantilever shaft and configured to support radial loads.

Abstract: A system for determining angular displacement, velocity and acceleration of a rotating member axially mounted to a platform including at least one digital storage disk having data stored concentrically thereon, the disk and rotating member having the same axis of rotation, at least one laser transmitter for emitting a laser beam directed towards the disk, at least one laser receiver for receiving a reflected portion of the emitted laser beam, at least one processor, and at least one memory storing software thereon for determining the angular displacement, velocity and acceleration of the rotating member. A method for determining the angular displacement, velocity and acceleration of the rotating member is also provided.

Abstract: An apparatus, according to one approach, includes two arrays of data transducers on a module, the two arrays being aligned along a common axis extending between distal ends of the module. Outer servo readers are positioned toward outer ends of the two arrays. An inner servo reader is positioned between the two arrays. The servo readers are positioned to each reside above a unique servo track on a magnetic recording tape. A method according to one approach includes passing a magnetic recording tape having a plurality of data bands over a module as described above. Data is simultaneously transduced on the two data bands using the data transducers. Advantageously, the number of simultaneously-usable channels on the module is dramatically increased, thereby also dramatically increasing the data rate per unit of tape speed, while backward compatibility may be preserved.

Abstract: Technologies for increasing the reporting granularity of media render data transfers includes determining an estimated amount of transferred media data transferred by a direct memory access (DMA) controller of a compute device to a render link based on an elapsed time since the initiation of the rendering process and a data transfer rate of the render link. In some embodiments, an error value indicative of a difference between the estimated amount of transferred media data and a reported amount of transferred media data by the DMA controller is determined. If the error value fails to satisfy a threshold error value, the estimated amount of transferred media data may be determined based on a mean error value of previously determined estimated amount of transferred media data.

Abstract: An image forming apparatus includes a hand detection sensor that detects a hand within a predetermined range from a grasping part of a sheet feeding cassette, a locking mechanism capable of locking the sheet feeding cassette in a closed state with respect to the image forming apparatus body, and an operation control unit that operates the locking mechanism to lock the sheet feeding cassette when the hand is detected by the hand detection sensor during the execution of a printing process in an image forming apparatus body, interrupts the printing process after the locking, and releases the locking by the locking mechanism after the interruption.

Abstract: A computer-implemented method for copying data from a source medium to a target medium in a storage system by a computer system, the storage system including a storage device, a first drive configured to access the source medium, and a second drive configured to access the target medium, the method comprising: estimating a waiting time for copy target data to be transferred from the source medium, selecting migration target data of the storage device based on whether migration of data to the target medium is expected to be finished within the waiting time or not, migrating the migration target data from the storage device to the target medium by the second drive while locating and/or reading the copy target data on the source medium by the first drive, and writing the copy target data to the target medium by the second drive.

Abstract: The invention relates to a verification module (118) for verifying accuracy of a controller (116). The controller (116) is arranged to generate a demand based on a first input and a second input. The verification module (118) comprises; a calculation module (120) arranged to calculate an expected demand; a correction module (122) arranged to calculate an error between the demand and the expected demand and modify the expected demand to reduce the error; and a limiter (136) arranged to limit the demand in response to the error being greater than a threshold.

Abstract: Implementations disclosed herein include a method to synthesize the controller of a multi-stage servo control system with multiple actuators in a hard disk drive by dividing controller synthesis into multiple dual-stage steps. The method includes measuring a first output of a first plant corresponding to a first actuator, measuring a second output of a second plant corresponding to a second actuator, designing a first controller responsive to the first output, designing a second controller responsive to the second output, and combining the first output and the second output to obtain a first combined output in a first dual-stage. The method also includes designing a third controller responsive to the first combined output, measuring a third output from a third plant corresponding to a third actuator, designing a fourth controller responsive to the third output, and combining the first combined output and the third output to obtain a second combined output.

Abstract: Described is a tape library system that generally comprises a plurality of tape drives and a data bus that links a host computer system to a first tape drive address and a second tape drive address. However, the first tape drive address points to a first controller and switch system that assumes the identity of one of the tape drives. The first controller and switch system is linked to a first tape drive adapted to cooperate with a first type of tape cartridge and a second tape drive adapted to cooperate with second type of tape cartridge. The second tape drive address points to a second controller and switch system that assumes the identity of a different one of the tape drives. The second controller and switch system is linked to a third tape drive adapted to cooperate with the first type of tape cartridge and a third tape drive adapted to cooperate with the second type of tape cartridge.

Abstract: According to one embodiment, a storage device includes a first nonvolatile memory, a second volatile memory, and a controller. In the second volatile memory, at least one of management information for managing user data written in the first nonvolatile memory and the user data is temporarily written as cache data. The controller is configured to execute processing for writing the cache data written in the second volatile memory to a third memory of the host device, if the storage device is changed from a regular mode to a low power consumption mode in which supplying of power to the second volatile memory is stopped, in response to a request from a host device.

Abstract: A part detecting device of a carrier tape includes a transporting passage, a part detector, and a biasing mechanism that presses the part detector against the carrier tape inside the transporting passage. The carrier tape is transported to the transporting passage. The part detector detects parts stored in storages which are formed on the carrier tape passing through the transporting passage at regular intervals.

Abstract: A method for execution by a dispersed storage (DS) client module includes receiving a write request for a first data object. A set of storage units associated with the first data object are identified, and an availability level is determined. The DS client module determines to modify dispersal parameters associated with the set based on the availability level, and modified dispersal parameters are determined based on current dispersal parameters and the availability level. Encoded slices are generated by performing an encoding function on the first data object using the modified dispersal parameters, and the slices are sent to the storage units. A second data object stored in the identified set of storage units is recovered by utilizing the current dispersal parameters. Encoded slices are generated by performing an encoding function on the second data object using the modified dispersal parameters, and the slices are sent to the storage units.

Abstract: In a device with first and second heads, the second head is held at a radial location over one or more disks via a second actuator that moves the second head. A position error of the second head is read while performing a seek with a first actuator, the first actuator moving the first head over the one or more disks. A mechanical transfer function is determined between the first actuator and the second actuator based on the position error of the second head. The mechanical transfer function is used to provide compensation for the second head via the second actuator in response to subsequent seek of the first actuator.

Abstract: A library manager to determine a relay-point library string when a particular cartridge (specific cartridge) is moved to an empty drive (target drive) for mounting. A method for determining a relay-point library string includes: receiving a command to mount a cartridge in a library string located on one side of the relay-point library string; searching for the target drive among library strings, and finding the target drive in a library string on the other side of an interposed relay-point library string relative to the library string in which the specific cartridge is located; selecting a relay-point library string based on predetermined conditions to move the specific cartridge using shuttle connections to the found target drive; and searching to determine whether or there is a newly available drive in a relay-point library string other than the selected relay-point library string before the selected cartridge reaches the selected relay-point library string.

Abstract: In one embodiment, an apparatus includes an accessor configured to transport data storage cartridges in a library environment, and a bracket configured to receive a wireless image capture device therein where the bracket is positioned to orient the wireless image capture device to capture images while the accessor is transporting data storage cartridges. In another embodiment, a method for mounting a wireless capture device to an accessor to capture images of an operation in a data storage library includes mounting a bracket to the accessor, where the accessor is configured to transport data storage cartridges in a library environment, where the bracket is configured to receive a wireless image capture device therein. The bracket is mounted in a position to orient the wireless image capture device to capture images while the accessor is transporting data storage cartridges.

Abstract: A data storage device that includes a magnetic storage device selects one or more power states of the magnetic storage device based on a time interval since a most recent time data has been read from or written to the magnetic storage device. The power state of the magnetic storage device can be changed from a higher power consumption state to a lower power consumption state when the time interval exceeds a predetermined value. The power consumption state may be changed from an active servo state to an intermediate power consumption state, a park state, and/or a standby state, depending on the time elapsed since the most recent time data has been read from or written to the magnetic storage device.

Abstract: A method of servicing a data storage library having at least one access opening and at least one access door to permit access to an interior of the data storage library, the method including providing at least one barrier configured to at least partially surround the at least one library access opening when the at least one access door is opened, wherein the at least one barrier is configured to resist environmental conditions from exterior the barrier and data storage library from intruding into the interior of data storage library when the barrier is deployed. The method also includes deploying the at least one barrier when the at least one access door is opened to form an interior working space, accessing the interior space formed by the at least one barrier, and accessing the interior of the data storage library via the at least one library access opening.

Abstract: In accordance with an embodiment, a method of driving a switching transistor includes receiving an activation signal for the switching transistor and generating a sequence of random values. Upon receipt of the activation signal, a control node of the switching transistor is driven with a drive strength based on a random value of the sequence of random values.

Abstract: A data storage device is disclosed comprising a head actuated over a disk, and a spindle motor configured to rotate the disk, wherein the spindle motor comprises a plurality of windings. The windings of the spindle motor are commutated based on a commutation sequence while applying a driving voltage to each winding, wherein the driving voltage comprises an operating polarity during normal operation. When a supply voltage falls below a threshold while the spindle motor is rotating the disk, the spindle motor is configured into a power generator by at least reversing the polarity of the driving voltage for an interval and then reversing the polarity of the driving voltage back to the operating polarity.

Abstract: Embodiments include systems and methods for providing throughput increase and/or physical expansion of a data storage library. Some embodiments include multiple robotic assemblies, each having its own hand assembly, which are electrically and mechanically integrated for concurrent use in a single storage library environment for increased throughput. Other embodiments include an active vertical pass-through assembly that operates to ferry cartridges from one storage library environment to another, vertically adjacent storage library environment. Some such embodiments use existing robotic mechanisms of the libraries to exploit a shared slot through which vertical pass-through functionality can be realized. Other embodiments include an active horizontal pass-through assembly that operates to ferry cartridges from one storage library environment to another, horizontally adjacent storage library environment.

Abstract: Embodiments of an integrated motor drive power electronics system are generally described herein. In some embodiments, the integrated motor drive power electronics system includes an active line filter (ALF) configured to control and regulate current drawn from an input power source and to attenuate current ripple fed back to the input power source, an energy storage capacitance coupled to an output of the active line filter, and a bidirectional low voltage power supply (LVPS). In some embodiments, the bidirectional LVPS may provide regulated power to a load and may selectively recycle power back to the input power source and regulate voltage at the load to a predetermined output voltage. In some embodiments, the energy storage capacitance may serve as a local input power source for higher power motor drive electronics and the bidirectional LVPS.

Abstract: A computing system accepts audio from one or more sources, parses the audio into chunks, and transcribes the chunks in substantially real time. Some transcription is performed automatically, while other transcription is performed by humans who listen to the audio and enter the words spoken and/or the intent of the caller (such as directions given to the system). The system provides for participants a user interface that is updated in substantially real time with the transcribed text from the audio stream(s). A single audio line can be used for simple transcription, and multiple audio lines are used to provide a real-time transcript of a conference call, deposition, or the like. A pool of analysts creates, checks, and/or corrects transcription, and callers/observers can even assist in the correction process through their respective user interfaces. Ads derived from the transcript are displayed together with the text in substantially real time.

Abstract: Systems and methods for determining a relationship between write fault threshold and temperature are described. The systems and methods include measuring an operating temperature of the storage device, determining a current operating temperature of the storage device, determining whether the current operating temperature of the storage device satisfies a temperature threshold, and upon determining the current operating temperature of the storage device satisfies the temperature threshold, modifying a write fault threshold associated with a data track of the storage device.

Abstract: A memory device according to an embodiment includes a non-volatile storage device, a volatile storage device that stores saved data which is saved in the host-side storage device when a first operation mode changing process is executed by the memory device, and a control unit. The control unit transmits, to the host device, a write command that is an instruction to write the saved data to the host-side storage device and the saved data, when the first operation mode changing process is executed by the memory device.

Abstract: A storage device includes a nonvolatile memory unit, a volatile memory unit, a power supply control unit configured to control power supply to the nonvolatile memory unit and the volatile memory unit, and a control unit configured to control the power supply unit to cut off the power supply to the nonvolatile memory unit and the volatile memory unit during a first operation, and control the power supply unit to cut off the power supply to the nonvolatile memory unit and to maintain the power supply to the volatile memory unit during a second operation that is different from the first operation.

Abstract: Methods, systems, and computer program product embodiments for improving track-follow control in a tape storage system, by a processor device, are provided. In one embodiment, a method comprises, using an accelerometer to dynamically detect device vibration for determining whether to implement a vibration compensation control mechanism.

Abstract: An apparatus (01) configured for identifying numbers for layers having objects thereon within a container (02), the objects being accommodated in the container and arranged in layers. the apparatus comprising: an optical fiber sensor (10) configured for detecting presence or absence of the objects from layers within a detecting range; a support frame (20) configured for carrying the optical fiber sensor (10); a guide rail (60) configured for defining a moving direction of the support frame (20); a motor (40) and driving mechanism (30) configured for driving the optical fiber sensor to move along the guide rail; and a controller (50) connected with the optical fiber sensor (10) and the motor (40), wherein the controller (50) is at least configured for obtaining the numbers for the layers having objects thereon according to a moving distance of the support frame (20), in the case that the presence of the objects is detected by the optical fiber sensor (10).

Abstract: A tape appliance that includes two read heads and two write heads arranged along a magnetic tape path. The heads are configured such that for a first longitudinal direction of tape travel along the tape path, the tape engages the tape bearing surface of a first one of the write heads followed by engaging the tape bearing surface of a first one of the read heads and flies over the tape bearing surfaces of the other write head and the other read head. For the reverse longitudinal direction of tape travel along the tape path, the tape engages the tape bearing surface of the other write head followed by engaging the tape bearing surface of the other read head and flies over the tape bearing surfaces of the first write head and the first read head.

Abstract: According to one embodiment, a data storing method includes saving data stored in a memory device to a host device and verifying validity or accuracy of the data saved in the host device.

Abstract: A library manager to determine a relay-point library string when a particular cartridge (specific cartridge) is moved to an empty drive (target drive) for mounting. A method for determining a relay-point library string includes: receiving a command to mount a cartridge in a library string located on one side of the relay-point library string; searching for the target drive among library strings, and finding the target drive in a library string on the other side of an interposed relay-point library string relative to the library string in which the specific cartridge is located; selecting a relay-point library string based on predetermined conditions to move the specific cartridge using shuttle connections to the found target drive; and searching to determine whether or there is a newly available drive in a relay-point library string other than the selected relay-point library string before the selected cartridge reaches the selected relay-point library string.

Abstract: An apparatus for operating a tape storage device comprises a first tape skew determination unit for providing a first tape skew value concerning a skew of a tape in the tape storage device, and a second tape skew determination unit for providing a second tape skew value concerning the skew of the tape. An actuator adjusts one or more of a rotational orientation of a tape head of the tape storage device which tape head is provided for reading and/or writing data from/to the tape, and a motion direction of the tape dependent on the first tape skew value and the second tape skew value.

Abstract: A mechanism is described for facilitating efficient operations paths for storage devices in computing systems according to one embodiment of the invention. A method of embodiments of the invention includes identifying a request for power mode change at a storage device at a computing system. The request for power mode change indicates potential reduced power state of the storage device. The method may further include transferring context information at the storage device to a host memory at the computing system, in response to the first command, and saving the context information at the host memory, wherein the storage device is at reduced power state.

Abstract: A method according to one embodiment includes generating track following controller state information based on a positional signal of a head relative to a medium. One or more portions of the state information corresponding to particular frequencies are used to determine at least one of: lateral tape movement, tape skew, vibration operation conditions, and roller performance.

Abstract: A system for controlling an electricity supply to a load comprises at least one battery for storing energy. The system also comprises a controller for determining when to switch between a first mode wherein electricity is supplied to the load from a mains electricity circuit; and a discharging mode wherein electricity is supplied from the battery to the load via the mains electricity circuit. The determining is based on information associated with the electricity supply.