A magnetic tape cartridge includes a case in which a magnetic tape is accommodated and a storage medium provided in the case. At least one of reading or writing of data is performed by a plurality of magnetic elements, which are linearly disposed, with respect to the magnetic tape pulled out from the case. A disposition direction of the plurality of magnetic elements is tilted toward an entire length direction side of the magnetic tape with respect to a width direction of the magnetic tape. The storage medium stores tilt feature information indicating a feature of tilt of the disposition direction with respect to the width direction.

Provided is a magnetic tape cartridge including: a case in which a magnetic tape on which a plurality of servo bands are formed is accommodated; and a storage medium provided in the case, in which the plurality of servo bands are formed at positions spaced apart from each other in a width direction of the magnetic tape along an entire length direction of the magnetic tape, and the storage medium stores pitch information capable of specifying a pitch in the width direction between the plurality of servo bands and distance information capable of specifying a distance between a plurality of servo reading elements that have read the plurality of servo bands.

A method for making a magnetic recording tape, in accordance with one approach, includes coupling an underlayer to a substrate, the substrate comprising a poly ether ether ketone (PEEK). A method for making a magnetic recording tape in accordance with another approach includes coupling an underlayer to a substrate via radiation-induced grafting, the substrate comprising a poly ether ether ketone (PEEK). A recording layer may be coupled to the underlayer.

A magnetic recording tape, in accordance with one approach, includes a substrate comprising a poly ether ether ketone (PEEK). An underlayer is positioned above the substrate. A recording layer is positioned above the underlayer. A tape cartridge, in accordance with one approach, includes a housing and a magnetic recording tape at least partially stored in the housing. The magnetic recording tape includes a substrate comprising a poly ether ether ketone (PEEK), an underlayer above the substrate, and a recording layer above the underlayer.

A method for making a magnetic recording tape, in accordance with one approach, includes coupling an underlayer to a substrate, the substrate comprising a poly ether ether ketone (PEEK). A method for making a magnetic recording tape in accordance with another approach includes coupling an underlayer to a substrate via radiation-induced grafting, the substrate comprising a poly ether ether ketone (PEEK). A recording layer is coupled to the underlayer.

A computer-implemented method can include obtaining tape data for one or more tapes. The tape data can include pointer data corresponding to a first file. The method can further include determining, based on the tape data, that the first file is stored on a first tape of the one or more tapes. The first tape can have an export status. The method can further include determining that the pointer data includes a pointer to the first tape and a pointer to a second tape. The second tape can have a non-export status. The method can further include storing at least a portion of the tape data. The method can further include initiating, based on the first tape having the export status, a deactivation of the pointer to the first tape.

A computer-implemented method can include obtaining tape data for one or more tapes. The tape data can include pointer data corresponding to a first file. The method can further include determining, based on the tape data, that the first file is stored on a first tape of the one or more tapes. The first tape can have an export status. The method can further include determining that the pointer data includes a pointer to the first tape and a pointer to a second tape. The second tape can have a non-export status. The method can further include storing at least a portion of the tape data. The method can further include initiating, based on the first tape having the export status, a deactivation of the pointer to the first tape.

A magnetic tape cartridge including: a magnetic tape; and a recording medium including a predetermined area for recording defect information, which is information regarding a defect of the magnetic tape detected in a production process of the magnetic tape. A recording device, a recording method, a data recording and reproducing system, and a data recording and reproducing method are also provided.

Provided is a magnetic recording medium capable of implementing higher-density recording. This magnetic recording medium includes a substrate containing a polyester and a magnetic layer disposed on the substrate, including a plurality of types of magnetic powder. A surface of the magnetic layer has an arithmetic average roughness Ra of 2.5 nm or less. PSD to a spatial wavelength of 5 μm is 2.5 μm or less. The magnetic layer has an average thickness of 90 nm or less. The magnetic powder has an average aspect ratio of 1.0 or more and 3.0 or less. A coercive force in a perpendicular direction is 3000 oersted or less. A ratio of a coercive force in a longitudinal direction to the coercive force in the perpendicular direction is 0.8 or less. A half-value width of an isolated waveform in a reproduced waveform of a data signal is 200 nm or less.

Provided is a magnetic recording medium capable of implementing higher-density recording. This magnetic recording medium includes a substrate containing a polyester and a magnetic layer disposed on the substrate, including a plurality of types of magnetic powder. A surface of the magnetic layer has an arithmetic average roughness Ra of 2.5 nm or less. PSD to a spatial wavelength of 5 μm is 2.5 μm or less. The magnetic layer has an average thickness of 90 nm or less. The magnetic powder has an average aspect ratio of 1.0 or more and 3.0 or less. A coercive force in a perpendicular direction is 3000 oersted or less. A ratio of a coercive force in a longitudinal direction to the coercive force in the perpendicular direction is 0.8 or less. A half-value width of an isolated waveform in a reproduced waveform of a data signal is 200 nm or less.