A memory system according to an embodiment includes a plurality of magnetic nanowires, a read unit that reads data from the magnetic nanowires, a shift control unit that shifts domain walls in the magnetic nanowires, and a read control unit. The read control unit is configured to control the read unit to read the data from the magnetic nanowires in parallel, store two or more of the data read in parallel, and when the data corresponding to a first magnetic nanowire of the magnetic nanowires are delayed or advanced as compared to the data corresponding to a second magnetic nanowire of the magnetic nanowires, determines a misalignment in the data and correct the data based on the misalignment.

A tape head includes a body, which includes a transducer. The transducer may be a read or write element, respectively configured so as for the tape head to read from or write to a tape, in operation. The body exhibits a tape-bearing surface, which is typically configured to face and interact with the tape, in operation. The tape head further includes a closure. The closure is fixed on a leading side or a trailing side of the body and includes a skiving edge vis--vis the transducer. The skiving edge is adjoined by non-skiving edges. Finally, the closure has a top surface that meets the skiving edge; the top surface is level with the tape-bearing surface. Also included are related devices; tape head apparatuses for recording and/or reproducing tapes, comprising such tape heads; and methods of fabrication thereof.

Various illustrative aspects are directed to a data storage device, method, and one or more processing devices that are configured to: maintain respective measures of write commands associated with respective ones of shingled magnetic recording (SMR) zones defined in a data storage device, wherein data associated with the write commands is stored in a write cache associated with the data storage device; select one of the SMR zones based on the respective measures; perform a pre-heat operation of a laser diode included in a head associated with the selected one of the SMR zones; and perform a continuous write operation in the selected one of the SMR zones following the pre-heat operation, wherein the continuous write operation writes at least a portion of data stored in the write cache associated with the selected one of the SMR zones.

According to one embodiment, a magnetic recording/reproducing device includes a housing which accommodates a magnetic recording medium, and a magnetic head which records or reproduces magnetic data relative the magnetic recording medium, and a synthetic adsorbent provided in the housing and containing a polystyrene-divinylbenzene copolymer.

A method of manufacturing an electronic device includes a positioning step of positioning a first member supporting a laser diode with respect to a second member having a waveguide, a bonding step of bonding the first member and the second member together, and a checking step of checking the accuracy of positioning of the first member with respect to the second member. In the positioning step, the laser diode is energized to allow laser light to be emitted, and the laser light is allowed to be incident on the incidence end of the waveguide. In the bonding step, a bonding material is melted by irradiating the first member with heating light while the laser diode is not energized. In the checking step, the laser diode is energized again.

An information storage apparatus includes a magnetic track, a writer, and a reader, where the magnetic track includes a number of magnetic domains. Each magnetic domain is divided into at least two magnetic regions, and the writer is disposed on the magnetic track, and configured to write information to the at least two magnetic regions of each magnetic domain. The reader, disposed on the magnetic track, is configured to read the written information from the at least two magnetic regions. Therefore, multiple pieces of valid information are written to one magnetic domain of the magnetic track, thereby increasing storage density of the magnetic track, and expanding a storage capacity of the storage apparatus.

A method for accelerating a background replication process on storage volumes during application I/O (input/output) requests includes reading requested data from a first storage volume. The method stores the requested data in an embedded memory device, and providing the requested data to the application. The method receives a read request from the background replication process. The method responds to the read request from the background replication process by providing data from the embedded memory device to the requesting background replication process concurrently with providing data to the requesting application. The method stores, by the background replication process, the data provided from the embedded memory device onto a second storage volume.

A method of manufacturing a plasmon generator includes the steps of: forming an initial film made of a metal polycrystal and including a pre-plasmon-generator portion that later becomes the plasmon generator; heating the initial film with heating light so that a plurality of crystal grains constituting the metal polycrystal grow at least in the pre-plasmon-generator portion; stopping the heating of the initial film; and forming the plasmon generator by processing the initial film after the step of stopping the heating. The step of forming the plasmon generator includes the step of providing the pre-plasmon-generator portion with a front end face that generates near-field light.

A rotating magnetic physical unclonable function (PUF) is disclosed. Rotating the PUF enables robust low cost PUF readers. PUF may be incorporated into a user-replaceable supply item for an imaging device. A PUF reader may be incorporated into an imaging device to read the PUF. Other systems and methods are disclosed.

A data storage device is disclosed comprising a disk comprising a plurality of data sectors and a plurality of servo sectors, and a head actuated over the disk, wherein the head comprises a laser configured to heat the disk while writing data to the disk. When the head is over a first data sector not being written, a first prelase bias is applied to the laser, and when the head is over a servo sector, a second, lower prelase bias is applied to the laser. When the head is over a second data sector being written, a write bias higher than the first prelase bias is applied to the laser.