Patent classifications
G11B5/00821
System and method for write protecting portions of magnetic tape storage media
A non-transitory computer readable storage medium includes a tape having a plurality of partitions configured for storing data, and a plurality of read-only partition identifiers, each read-only partition identifier associated with one of the plurality of partitions and readable by a tape drive having a processor and memory for writing and reading tape data. Each read-only partition identifier selectively designates a corresponding one of the partitions as read-only to prevent data from being written to the designated read-only partition by the tape drive.
TAPE DRIVE SYSTEM WITH TAPE SURFACE INSPECTION UNIT
A tape drive system for ensuring tape data integrity by tape surface inspection, the tape drive system being configured for reading and writing data from/to a magnetic tape, is provided. The tape drive system includes a laser inspection unit comprising a sender and a receiver integrated into the tape drive system, wherein the laser inspection unit configured for recognizing a tape defect by scanning the magnetic tape when the tape drive system is in operation. The tape drive system includes a read/write head configured for acting together with the laser inspection unit as sensors for providing sensor data during a read/write operation of the tape drive system, a communication link between the sensors and a controller unit for exchanging sensor data. The controller is configured for evaluating sensor data and for triggering predefined actions based on the respective evaluation results such that the tape data integrity is ensured.
Shortening the average reposition time to the beginning of files in a magnetic tape
A system accesses metadata on a file system of the magnetic tape, where the metadata comprising one or more fields enabling to determine a longitudinal position (LPOS) of one or more files located on the magnetic tape. The system determines the LPOS of the one or more files located on the magnetic tape. The system determines an optimal location of the head on the magnetic tape based on computing an average value to the determined LPOS of the one or more files located on the magnetic tape and moves the head on the magnetic tape to the optimal location.
Tape head and system having asymmetrical construction
An apparatus according to one embodiment includes a module having a tape bearing surface, a first edge, and a second edge, where a tape tenting region extends from the first edge toward the second edge, the first edge being a first end of the tape tenting region, a second end of the tape tenting region being positioned between the first and second edges. The apparatus includes a guide positioned relative to the first edge for inducing tenting of a moving magnetic recording tape and a transducer positioned in the tape tenting region. In addition, the module has a wear coating on a media facing side of the transducer, where a peak height is defined between the peak of tenting and an upper surface of the coating. The thickness of the wear coating is in a range of between about 0.5 and about 3 times the peak height.
FILLED-GAP MAGNETIC RECORDING HEAD AND METHOD OF MAKING
A magnetic head, according to one embodiment, includes a rowbar substrate having a tape support surface and a gap surface at a substrate edge. A closure is positioned opposite the gap surface of the rowbar substrate, the closure forming a portion of the tape support surface. A recessed gap region is interposed between the gap surface of the rowbar substrate and the closure, the recessed gap region having a recessed gap profile that extends between the gap surface of the rowbar substrate and the closure, the recessed gap region having a transducer row with at least one magnetic sensor on the gap surface of the rowbar substrate. An insulation layer is positioned over the recessed gap profile of the recessed gap region.
Method of forming magnetic recording head having protected reader sensors and near zero recession writer poles
A method according to one embodiment includes recessing a portion of a media facing side of a module, the module having first and second transducers of different magnetic transducer types positioned towards the media facing side of the module, wherein the different transducer types are selected from a group consisting of data reader transducers, servo reader transducers, write transducers, piggyback read-write transducers and merged read-write transducers; wherein the recess is positioned towards one of the first transducers, wherein the recess forms a first protection structure for protecting the first transducer; and wherein the second transducer has either no protection or is protected by a second protection structure that is different than the first protection structure.
Signal processing device, magnetic tape drive, magnetic tape, magnetic tape cartridge, program, signal processing method, and magnetic tape manufacturing method
A magnetic head includes a pair of servo reading elements corresponding to a pair of servo bands adjacent to each other in a width direction. A processor acquires a first signal based on a first result obtained by reading a servo pattern in a first servo band by a first servo reading element included in a pair of servo reading elements, acquires a second signal based on a second result obtained by reading the servo pattern in a second servo band by a second servo reading element included in the pair of servo reading elements, and outputs a deviation amount signal corresponding to a deviation amount in time between the first signal and the second signal.
Filled-gap magnetic recording head and method of making
A method of making a magnetic head, according to one embodiment, includes supplying a magnetic recording head having a gap disposed between a rowbar substrate and a closure, said rowbar substrate and closure having a tape support surface, recessing the gap below the level of the tape support surface, sputter cleaning the head, and depositing an insulation layer on the tape support surface and the recessed gap. In addition, about an entire upper surface of the insulation layer above the gap is recessed from the tape support surface.
Tape head surface with non-uniform cross-width edge profiles
A tape head having offset transducer spans between adjacent modules of the tape head that serves to maintain the balance between debris removal and reduced magnetic layer/recording device spacing on the one hand and reduced tape/tape head friction on the other hand. In one aspect, opposite edges of each module are relatively sharper adjacent the transducer span and relatively rounded (e.g., less sharp) away from the transducer span. The sharp edges reduce magnetic spacing loss and scrape debris off of the tape while the rounded edges reduce or eliminate contact between the tape and the head in regions where no transducer spans are present and thus where no tape writing or reading would be taking place.
Tape drive system with tape surface inspection unit
A tape drive system for ensuring tape data integrity by tape surface inspection, the tape drive system being configured for reading and writing data from/to a magnetic tape, is provided. The tape drive system includes a laser inspection unit comprising a sender and a receiver integrated into the tape drive system, wherein the laser inspection unit configured for recognizing a tape defect by scanning the magnetic tape when the tape drive system is in operation. The tape drive system includes a read/write head configured for acting together with the laser inspection unit as sensors for providing sensor data during a read/write operation of the tape drive system, a communication link between the sensors and a controller unit for exchanging sensor data. The controller is configured for evaluating sensor data and for triggering predefined actions based on the respective evaluation results such that the tape data integrity is ensured.