International Business Machines Corporation

Tatsuki Sawada

Tsuyoshi Miyamura

Setsuko Masuda

Mitsuhiro Nishida

Yuki Satake

Aya Nakashima

Yuka Sasaki

Reiya Takemura

Junta Watanabe

Junichi Hanzawa

Mingqin Xu

Automatically generating and implementing access policies is provided. An output of a needed user access context to access a resource is obtained from a trained machine learning model based on an extracted attribute of the resource input into the trained machine learning model. The access to the resource by a user is controlled using the output of the needed user access context to access the resource as an access policy for the resource.

Automatic resource access policy generation and implementation

A system for recalling data from tape is disclosed. The system includes computer processing circuits and computer readable storage media having computer executable instructions. When executed, the instructions cause the computer-processing circuits to start, in response to a request to recall data from a tape, to read the tape at a read position. Additionally, the instructions cause the circuits to determine that the tape comprises a damaged region. Further, the instructions cause the circuits to determine a start position of the damaged region by skimming the tape. Additionally, the instructions cause the circuits to determine an end position of the damaged region by skimming the tape. Further, the instructions cause the circuits to read between the read position and the start position of the damaged region. Additionally, the instructions cause the circuits to read between the end position of the damaged region and an end of data indicator.

Recalling data from tape

A method for creating a Full Data Set Directory (FDSD) entry, in accordance with one embodiment, includes acquiring a record count and file mark count of a data set written to and/or to be written to a magnetic recording tape. A writing position on the tape where the data set will be written is determined. The data set is written on the tape. An FDSD entry is generated for the data set. The FDSD entry includes information about each of the following: a tape write pass in which the data set is written, a position of the data set on the tape, the record count, and the file mark count.

Full data set directory for magnetic tape recording media

Embodiments of the present invention provide a system, method, and computer program product for offsetting a reading head on a magnetic tape to improve verification. A processor determines a write head width, a read head width, and a track pitch based on determining an LTO standard of the magnetic tape. The processor determines a distance of the reading head from a writing head using the write head width, the read head width, and the track pitch, and causes a tape appliance to relocate the read head on the magnetic tape to the determined distance.

Reducing deviation of read head position between writing and reading in a magnetic tape

A tool for scaling media utilizing healthy regions of a data storage cartridge. The tool determines a health status index for one or more regions of a data storage cartridge. The tool records the health status index to a cartridge memory and housekeeping dataset of the data storage cartridge. The tool determines one or more available regions of the data storage cartridge, based, at least in part, on a capacity designation and the health status index for the one or more regions. The tool returns the one or more available regions and a reduced capacity for the data storage cartridge to a user.

Scaling media utilizing healthy regions of a tape cartridge

In an approach to improve file recall between storage devices by optimizing file recall for multiple users. Embodiments of the present invention obtain one or more similarities among one or more users based on one or more usage points and divide the one or more users into a plurality of clusters based on a content of the one or more usage points. Further, embodiments select a cluster from the plurality of clusters based on cluster importance, and select the content used by more than a predetermined percentage of the weighted users pertaining to the selected cluster as an automated recall subject. Additionally, embodiments recal one or more selected content from a secondary storage device to a primary storage device.

Optimizing file recall for multiple users

In an approach to using a cut and paste segment for reading an sHKDS, a request to reposition a tape media in a tape drive is received. Responsive to encountering an error reading an sHKDS while attempting to reposition the tape media, one segment of a plurality of segments from a data set cut and paste error recovery procedure (ERP) is used for an sHKDS cut and paste ERP. Responsive to recovering the sHKDS using the sHKDS cut and paste ERP, the one segment reserved for the sHKDS cut and paste ERP is released to the data set cut and paste ERP.

Using a cut and paste segment for reading a standard housekeeping data set

Repositioning to a beginning of an area of a tape medium to which a reposition request is directed can be completed. Reading, as a part of an error recovery procedure (ERP), between a first dataset of the area and an mdataset of the area, can be completed, where m is a number of datasets for which cut and paste multi segments are to be generated. Cut and paste segments for each of the datasets in a range from the first dataset and the mdataset can be generated. A subset of datasets within the range of the first dataset to the mdataset having readable dataset information table (DSIT) information can be determined. A determination can be made whether the target data position is included within the subset of datasets within the range of the first dataset to the mdataset by reading the DSIT information.

Growing community of inventors

Matsudo, Japan

Tatsuki Sawada