59 results about "Tape drive" patented technology

Beginning of wrap (BOW) data set reading and writing for tape drives is provided. In response to reaching an end of wrap (EOW) while writing to tape, a tape directory (TD) is updated to include first data set information for a first data set written at the EOW of a first wrap. A second data set is written using normal write procedure from a BOW of a second wrap, the second wrap following the first wrap. The first data set information is overwritten with second data set information for the second data set written at BOW. When reading a BOW data set from tape, data set information is read from a TD. Based on determining whether the data set information corresponds to a BOW data set, a target Data Set ID and a target Tape Write Pass are set for reading the BOW data set.

Provided are a method, system, and computer program product in whichdata is encoded for a plurality of tracks of a tape of a tape drive, by using an error correction code (ECC) scheme that applies a single code with code word symbols that are at least 10 bits. The code word symbols are interleaved along and across parallel tracks of the tape in the tape drive.

Provided is a system, method, and computer program product for minimizing high resolution tape directory (HRTD) recovery time when a HRTD is invalid. A tape drive may load a tape in the tape drive. In response to receiving a write command or a read command at a beginning of tape (BOT) position, the tape drive may execute the write command or the read command without performing HRTD recovery. In response to receiving the write command or the read command at a position other than the BOT position, the tape drive may determine if the HRTD is valid. In response to determining the HRTD is not valid, the tape drive may clear a timer.

The utility model relates to the technical field of portable medical adhesive tape devices, in particular to an intelligent portable medical adhesive tape device for nursing, which comprises a shell with an opening structure at the front end, a through hole is formed in the right side wall of the shell in a penetrating manner, and a turn number sensor is mounted on the rear inner side wall of the through hole. The length of the medical adhesive tape needing to be taken is set by controlling the computer panel, then the tail end of the medical adhesive tape is pinched by two fingers and the medical adhesive tape is pulled, so that the medical adhesive tape is moved out of the shell through the through hole, and meanwhile, due to adhesion between the medical adhesive tape and the two rollers, in the moving process of the medical adhesive tape, the medical adhesive tape can be conveniently taken out. The medical adhesive tape drives the two rolling wheels to rotate, the two rolling wheels drive the rotating shaft to rotate, the number of rotation turns of the two rolling wheels and the rotating shaft is detected and counted through the turn number sensor, and due to the fact that the perimeters of the two rolling wheels are fixed, the length of the moved medical adhesive tape can be calculated through the number of rotation turns of the two rolling wheels. And further, the length of the taken medical adhesive tape is controlled.

A magnetic tape drive and an assembly for a tape drive are disclosed herein. The disclosed magnetic tape drive comprises a SAS-compliant tape drive module; and a USB-C to SAS assembly having one or more controllers operatively coupled to a USB-C connector and a SAS connector. The SAS connector of the USB-C to SAS assembly is operatively coupled to the SAS-compliant tape drive module. The USB-C to SAS assembly is configured to enable the magnetic tape drive to interface a USB-C-compliant computing device with the SAS-compliant tape drive module, and the USB-C to SAS assembly is configured to transmit tape commands received at the USB-C connector to the SAS-compliant tape drive module via the one or more controllers and the SAS connector. The assembly includes a SAS connector, a USB-C connector, and one or more controllers operatively coupled to the SAS connector and the USB-C connector.

Provided are a tape head controller, tape drive, and method for simultaneously writing data to two sets of channels to increase channel transfer rate. A tape head module having a first and second sets of read / write elements is positioned to have the first set of read / write elements on a selected wrap number in a first n channels in a first data band and the second set of read / write elements on the selected wrap number in a second n channels in a second data band. The first set and the second set of read / write elements are controlled to simultaneously perform read / write operations with respect to the selected wrap number in the first n channels and the second n channels, respectively. A combination of the first n channels and the second n channels is presented as a 2n-channel layout with a plurality of wraps in each of n channels.

Disclosed are a tape drive device and a storage system, which relate to the technical field of tapes. By means of using a tape winding assembly to temporarily store tape bodies between different positioning members, even after a tape slides past a target tape region aligned with a magnetic head, the length of the tape between different positioning members can still be controlled by means of the tape winding assembly, such that the moved magnetic head can access the target tape region, thereby solving the problem of the latency being relatively high caused by frequent reversals of a motor-driven tape in the tape drive device, reducing IO latency in the tape drive device, and facilitating an improvement in the data read / write efficiency of the tape drive device.

The invention relates to the technical field of magnetic tape units, in particular to a magnetic tape driver, a magnetic tape unit and a storage system.The magnetic tape driver comprises a read head, an analog equalization circuit and a digital processing chip; the read head is coupled with the analog equalization circuit, the analog equalization circuit is coupled with the digital processing chip, and the analog equalization circuit comprises an active filter; wherein the read head is used for reading an original analog signal from a magnetic tape of a magnetic tape unit and outputting the original analog signal to the analog equalization circuit; the analog equalization circuit is used for performing data equalization on the original analog signal through an active filter to obtain a first analog signal and outputting the first analog signal to the digital processing chip; the frequency response curve of the first analog signal is closer to the frequency response curve of a target signal type than the frequency response curve of the original analog signal, and the target signal type comprises partial response signals; and the digital processing chip is used for converting the analog signal into a digital signal and processing the digital signal. According to the embodiment of the invention, the order of the digital filter in the magnetic tape unit can be reduced.

The present disclosure generally relates to a tape drive comprising a tape head assembly. The tape head assembly comprises a head block having a first end and a second end, the second end being opposite the first end, one or more tape head modules disposed on the head block, the one or more tape head modules each comprising a plurality of data elements, a first spring disposed at the first end of the head block, a piezoelectric element disposed in contact with the second end of the head block, a counterweight disposed adjacent to the second end of the head block, and a second spring disposed adjacent to the second end of the head block. The counterweight has a first weight. The head block and the one or more tape head modules have a collective second weight. The first weight is equal to or greater than the second weight.

The application discloses a magnetic tape storage adaptive interleaving method and system based on dynamic error mode detection, relates to the technical field of magnetic tape interleaving, and comprises the following steps: continuously collecting error information in a magnetic tape reading and writing process and forming a structured report; judging the received structured report according to a preset rule, dynamically calculating new interleaving parameters, and outputting a decision package containing a new interleaving depth factor and a new available track list; checking whether the parameters in the received decision package are within a preset range, and if yes, sending an instruction to a magnetic tape drive through a bottom driver interface, setting new interleaving configuration for the magnetic tape, and obtaining a success status code returned by the magnetic tape drive; and the interleaving method significantly improves the reliability and error correction efficiency of the magnetic tape storage system in a complex error environment, reduces redundancy, and improves the effective utilization rate of storage space.

A data rewriting method and apparatus are disclosed. The method includes: acquiring the decoding result of a data block read from a magnetic tape by a tape drive, the data block comprising multiple data sub-blocks, each data sub-block comprising multiple data units and at least one check unit, the at least one check unit being obtained by encoding the multiple data units; the decoding result of the data block indicating the number of erroneous data units and / or check units in each of the one or more data sub-blocks included in the data block; determining whether the data block passes verification based on encoding capability information, the encoding capability information including a first encoding error correction threshold and a second encoding erasure threshold; if the number of data sub-blocks that fail decoding in the data block exceeds the second encoding erasure threshold, the data block fails verification; a data sub-block that fails decoding refers to a data sub-block containing erroneous data units and / or check units exceeding the first encoding error correction threshold; and rewriting the data block that fails verification.

A method and system for diagnosing tape cartridge and tape drive errors at a customer site and a tape cartridge used in the method and the system is disclosed herein. The tape cartridge includes a cartridge housing; a cartridge reel that is rotatably secured to the cartridge housing; tape media that is secured to the cartridge reel; and non-volatile cartridge memory comprising initial calibrated tape cartridge error data stored thereon, the initial calibrated tape cartridge error data comprising error information for a new state of the tape cartridge prior to the tape cartridge being used in an end-user tape drive so that subsequent errors associated with the tape cartridge and / or the end-user tape drive are able to be compared with the initial calibrated tape cartridge error data to determine whether the subsequent errors are associated with the tape cartridge, the end-user tape drive, or both the cartridge and the drive.

The label printer comprises a mounting shaft, a thermal transfer ribbon driving wheel set, a thermal transfer ribbon driving shaft set and a clamping piece, and the thermal transfer ribbon driving wheel set is arranged on the mounting shaft in a sleeving mode; the thermal transfer ribbon driving shaft group comprises a thermal transfer ribbon driving shaft, and the thermal transfer ribbon driving shaft sleeves the mounting shaft and is coupled with the thermal transfer ribbon driving wheel group, so that the thermal transfer ribbon driving shaft can drive a thermal transfer ribbon to be wound under the action of the thermal transfer ribbon driving wheel group; in the axial direction of the mounting shaft, the clamping piece sleeves and is clamped on the mounting shaft from one end, far away from the thermal transfer ribbon driving wheel set, of the thermal transfer ribbon driving shaft, and the clamping matching of the clamping piece and the mounting shaft can effectively limit the axial position of the thermal transfer ribbon driving shaft on the mounting shaft, so that the rotation stability of the thermal transfer ribbon driving shaft can be maintained; thermal transfer ribbon winding displacement caused by axial deviation of the thermal transfer ribbon driving shaft is reduced, and then the printing quality of the label printer is guaranteed. Compared with a screw locking installation mode, the clamping structure is simple in assembly process, tools are not needed, the operation difficulty can be reduced, and the production efficiency can be improved.

The invention discloses a data access method and magnetic tape unit equipment, and relates to the technical field of magnetic tapes. In the method, the magnetic tape unit equipment determines a first permission identifier according to a data protection strategy corresponding to a first address of a first data access request, and allows or forbids read / write operation of the first data access request according to the first permission identifier. Therefore, for each data access request, whether different areas, storing different data, of the magnetic tape allow read / write operation corresponding to the data access request is judged, flexible management of data access can be realized according to the address carried by the data access request, and the data protection granularity of the magnetic tape is refined into different areas in the magnetic tape; and the flexibility of the WORM technology for the magnetic tape is improved.

According to one aspect, a method includes writing, by a tape drive, a data track to a data band of a magnetic tape having servo bands on either side of the data band, the writing performed using a head not designed for a format of the magnetic tape. The writing includes overwriting a portion of each of the servo bands using the data track. According to another aspect, a method includes writing a data track to a data band using a head not designed for a format of a magnetic tape. An effective pitch of a servo reader of the head used concurrently during the writing matches a servo reader pitch specification of the format of the magnetic tape. An average effective pitch of a write transducer of the head is greater than a data track pitch specification of the format of the magnetic tape.

A system 100 for the erasure of data from a tape cartridge 110 has a data tape 112, a cartridge memory (CM) chip and a controller 102 in communication with a magnetic head 108, a tape driver 106 and a

In a method of adaptive tape calibration criteria based on number of failed tracks, a number of rewrite occurrences for each failed track on a tape drive is determined. In response to detecting that a head is in a failed track state, the number of failed tracks is stored on the tape drive. A calibration threshold is determined, where the calibration threshold comprises the number of failed track rewrite occurrences and a calibration reference value for a particular tape drive type. In response to the number of rewrite occurrences exceeding the calibration threshold when writing a data set, a calibration of the tape drive is performed.

The disclosure provides a magnetic head, a magnetic tape machine and a magnetic tape storage rack, and belongs to the technical field of magnetic tape storage. The magnetic head comprises a plurality of read-write zones arranged in the height direction of the magnetic head, and the plurality of read-write zones have intervals between them; each read-write zone of the plurality of read-write zones comprises a write head zone and a read head zone arranged along the width direction of the magnetic head, the write head zone comprises a write head for writing data into the magnetic tape, and the read head zone comprises a read head for reading data from the magnetic tape; when data access to a target data band of the magnetic tape is required, the target data band is accessed by the read-write zone closest to the target data band. The magnetic head can reduce the thickness of the magnetic tape machine, arrange more magnetic tape machines in the rack, and improve the magnetic tape storage density of the rack. The magnetic head can also save the material for manufacturing the magnetic head and reduce the manufacturing cost of the magnetic head.

In a tape drive comprising a tape head module, a tape contacts the tape head module during operation. The tape head module comprises a substrate, a plurality of data heads disposed adjacent to the substrate at a media facing surface (MFS), and a closure disposed adjacent to the plurality of data heads. The closure comprises a first side portion disposed at a leading edge, a second side portion disposed at the leading edge, the first and second side portions being recessed from the MFS, and a central portion disposed between the first and second side portions at the leading edge. In some embodiments, the central portion is recessed from the MFS. The central portion may comprise a notch, a taper, or one or more steps. The first and second side portions may be tapered, rounded, or comprise one or more steps to reduce contact of a tape during operation.

In a module of a tape head having multiple modules, a beam support member of at least one module has an alignment leg portion projecting from a body portion of the beam support member at a position displaced from the ends of the beam support member. The alignment leg of one module is matched with the alignment leg of another module to maximize glue adhesion between the legs and minimize positional drifting of the modules after glue curing in a staggered orientation. In another aspect, the support surface of a beam support member of a tape head module extends beyond the end of the wafer chiplet disposed on the beam support member to fully support the wafer chiplet. In still another aspect, one end of a beam support member of a tape head module is chamfered to facilitate mounting the tilted tape head assembly into a tape drive actuator.

A system, a procedure, and a computer program product are provided for minimizing the recovery time of a high-resolution tape directory (HRTD) when the HRTD is invalid. A tape drive can load a tape into the drive. In response to receiving a write command or a read command at a tape start position (BOT), the tape drive can execute the write command or the read command without performing an HRTD recovery. In response to receiving the write command or the read command at a position other than the BOT, the tape drive can determine whether the HRTD is valid. In response to determining that the HRTD is invalid, the tape drive can reset a timer.

Computer program product stored in a tape drive (2001, 2002, 200 i , 200 n ) is implemented in which a tape cassette (202 i ) including a non-volatile memory (220) and a tape medium (208), wherein the computer program product comprises a computer-readable storage medium containing computer-readable program code that is executable to perform operations, the operations comprising: Determine (402) whether the non-volatile memory of the tape cartridge stores a key encryption key (218) that includes a user-associated user encryption key (302) encrypted with a public key of a private key-public key pair; and In response to the determination that the non-volatile memory of the tape cartridge stores the key encryption key, perform: Decrypting (410) the key encryption key with the private key to generate the user encryption key; and Providing the user encryption key resulting from decryption to an encryption engine (212) of the tape drive to encrypt plaintext data read from the tape medium in the tape cartridge with the user encryption key (412; 508) in order to return the encrypted plaintext data to a read request (510).

The invention discloses a data writing method, magnetic tape unit equipment and a storage system, and relates to the technical field of magnetic tapes. The CMR mode and the SMR mode are mixed in different areas of the magnetic tape to write data, the problem that the utilization rate of the magnetic tape is low due to the fact that the data are written into the magnetic tape only according to the CMR mode is solved, the problem that the write amplification of the magnetic tape is high due to the fact that the data are written into the magnetic tape only according to the SMR mode is also solved, friction between the magnetic tape and a magnetic head is reduced, and the magnetic performance of the magnetic tape is improved. Abrasion of different areas in the tape is in a balanced state, so that the service life of the tape is prolonged.

Disclosed are a tape drive device and a storage system, which relate to the technical field of tapes. The present application solves the problem of a tape in a tape drive device requiring frequent reversal to allow a magnetic head to access data in the tape. Thus, during data access, the tape does not need frequent reversal, thereby reducing the IO latency of the tape drive device, and improving the access efficiency of the tape drive device. A data area in the tape is partitioned into a plurality of data slices, wherein the plurality of data slices are arranged at intervals, and two adjacent data slices are used for storing data of the same IO stream. During the tape winding process after the tape is driven by a tape drive, there is no need to consider the problem of reversing the tape, the tape drive can wind the tape at a relatively stable speed, and the magnetic head can still continuously access the data slices that are arranged at intervals in the tape during the winding process, and thus the tape does not need frequent reversal, thereby reducing the IO latency of the tape drive device, and improving the access efficiency of the tape drive device.

In one general embodiment, a method includes narrowing down a number of data sets to be searched in an HRTD (High Resolution Tape Directory) area for a target record based at least in part on a ratio of: a number of records from a beginning of the HRTD area to the target record, and a total number of records in the HRTD area having the target record. A physical position range in the HRTD area where the narrowed number of data sets physically exist is calculated based on a linear density of a tape drive specification. A magnetic tape having the HRTD area is repositioned to a starting data set in the calculated physical position range. The narrowed range of data sets is read starting at the starting data set.

A tape drive includes a first take-up reel and a second take-up reel that are in a stacking layout and that rotate around respective rotation axes, where the first take-up reel and the second take-up reel wind a tape body, and the respective rotation axes coincide or do not coincide. When the first take-up reel and the second take-up reel rotate, the tape body is driven to be transported from the first take-up reel to the second take-up reel. A tape header and roller structures are disposed on a transport path of the tape body between the first take-up reel and the second take-up reel. The tape header performs a read operation or a write operation on the tape, and the roller structures support the tape body.

The utility model discloses a kind of anti-warping's taping devices, belong to automatic taping field, including substrate;Anti-warping taping mechanism for the starting end of adhesive tape sticking is installed on the substrate to press and stick fixed;Adhesive tape rolling and cutting mechanism for the side edge of adhesive tape is installed on the substrate to extend the service life of adhesive tape by rolling and fixing;The anti-warping taping mechanism includes taping drive assembly, adhesive tape tensioning assembly and anti-warping taping assembly;Substrate, adhesive tape rolling and cutting mechanism, adhesive tape tensioning assembly and anti-warping taping assembly are connected with taping drive assembly. By the above-mentioned mode, the utility model can be realized by side edge compaction component to the compaction of adhesive tape side edge, reduce the risk of adhesive tape sticking after warping;Also can be realized by front end anti-warping sticking mechanism to the starting end of adhesive tape sticking also can be pressed and stick fixed, prevent starting end warping.

A detection device includes a processing device and a storage medium. The processing device stores a result of reading a reference servo pattern by a servo reading element in the storage medium as an ideal waveform signal, acquires a servo band signal which is a result of reading a servo pattern recorded in a servo band 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 with the servo band signal. The reference servo pattern is recorded between a BOT section and an EOT section in a longitudinal direction of the magnetic tape.

The embodiment of the invention provides a tape reel, a tape unit, a storage system and a write servo driving system, relates to the field of storage, and is used for providing a servo pattern suitable for high-speed rotation of a tape. Servo patterns in the magnetic tape unit comprise the first servo stripe, the second servo stripe and the third servo stripe, servo position information can be obtained through the three servo stripes, the number of times of repetition of the servo stripes is small, calculation overhead is small, the resolving speed is high, and the method is suitable for high-speed scenes. Besides, compared with the fact that the first servo stripe and the third servo stripe are not parallel, under the same detection precision and servo pattern width, the first servo stripe and the third servo stripe are arranged in parallel, the inclination angles of the servo stripes in the servo pattern are few, the transverse distance of the servo pattern can be reduced, the frame rate of the magnetic tape unit is improved, and the method is suitable for high-speed scenes.