Abstract: For replicating a source storage system, a scan module generates a source storage server description for each source storage server of the source storage system from a scan of the source storage system. The source storage server description includes a replication type and a source volume record for each source logical volume of the source storage server. A provision module determines a number of replicated instances of each source logical volume for a target storage system from the replication type. In addition the provision module generates a target storage server description for each target storage server of the target storage system from each source storage server description in response to the target storage system satisfying a target storage requirement.

Abstract: Provided are a computer program product, system, and method for processing a write of records to maintain atomicity for writing a defined group of records to multiple tracks. A write is received comprising defined groups of records to write to a plurality of tracks in the primary storage system. Sub-writes are generated to write the records in the defined groups in the write. At least one of the sub-writes includes records to write for at least one of the defined groups that spans multiple tracks in response to determining that at least one of the defined groups includes records that will be written to multiple tracks. The sub-writes are transmitted to the primary storage system to mirror to the secondary storage system to cause the secondary storage system to return complete in response to completing writing to all the tracks written to by the sub-write.

Abstract: Provided are a computer program product, system, and method for mirroring writes of records to maintain atomicity for writing a defined group of records to multiple tracks. Sub-writes are received from a host system to write records in defined groups in a write, wherein at least one of the sub-writes includes records to write for at least one of the defined groups that spans multiple tracks. For each of the sub-writes including records for at least one of the defined groups that spans multiple tracks, the tracks in the sub-write with to the secondary storage system to cause the secondary storage system to apply the tracks upon receiving all the tracks for the sub-write. . Complete is returned for the sub-write to the host system upon receiving confirmation from the secondary storage system that all the tracks for the sub-write have been applied to the secondary storage system.

Abstract: A first operational characteristic of a first configuration of a storage system is determined. The determination may be made using first data of the first configuration of the storage system and second data related to element interactions of the storage system. At least a second configuration of the storage system that differs from the first configuration is generated using the second data. At least a second operational characteristic of the second configuration is predicted using the second data.

Abstract: An apparatus-implemented method according to one embodiment includes detecting an error while writing data to a tape volume on a tape and repositioning the tape in response to detecting the error. A determination whether a rewrite of data associated with the error to the tape volume is allowed is made based on a current position of the tape after the repositioning. The data is rewritten to the tape volume in response to determining that the rewrite of data associated with the error to the tape volume is allowed. A computer program product for protecting overwrite of a tape volume according to another embodiment includes a computer readable storage medium having program instructions embodied therewith, the program instructions readable and/or executable by a controller to cause the controller to perform the foregoing method.

Abstract: A method of and system for managing a data set of a storage facility is disclosed. The data set may be a sequential-access data set. The method and system may include structuring the sequential-access data set to have a first group-of-records configured for adding a second group-of-records to the sequential-access data set. The method and system add a second group-of-records to the sequential-access data set. The method and system merge the second group-of-records with the first group-of-records in response to a triggering event. The method and system establish, in response to merging the second group-of-records with the first group-of-records, a marker configured to indicate the first and second group-of-records, as merged, is sorted.

Abstract: In one aspect of the present description, operations are described for detecting whether programming code of a first computer program has been modified by a second computer program. In one embodiment, the modification detecting includes registering a first section of programming code of the first computer program in a first registry data structure. To detect a modification, the registered first section of programming code may be validated. In one embodiment, the validating includes comparing the section of programming code actually located at the first memory address to the registered first section of programming code. In another aspect, various selectable remedial actions may be taken upon detecting modification of programming code of the first computer program. Other features and aspects may be realized, depending upon the particular application.

Abstract: For flash copy relationship management, a management module identifies a data unit in a flash copy relationship with an extent range using a flash copy table. A resolution module erases the flash copy relationship from the flash copy table in response to the flash copy relationship completing.

Abstract: A method, system, and computer program product for managing data sets of a storage facility is disclosed. The method, system, and computer program product include determining, by analyzing a first data set, that the first data set includes a first record having padded data. To identify the padded data, the method, system, and computer program product include comparing at least a portion of the first record of the first data set with a second record of a second data set. Next, the method, system, and computer program product include removing, from the first record of the first data set, the padded data.

Abstract: A method for storing data includes establishing an extended generation group comprising a plurality of data sets. The plurality of data sets includes a first data set containing primary members and a first number of generations of each of the primary members, and a second data set containing a second number of generations of each of the primary members. The method further indicates, in the metadata of the first data set, a maximum number of generations allowable in each of the first and second data sets When a primary member is modified in the first data set, the method automatically moves an oldest generation in the first data set to the second data set, and deletes an oldest generation in the second data set to ensure that the extended generation group does not exceed the maximum number.

Abstract: A computer program product for managing diagnostic information is disclosed. The computer program product may include creating a data space in volatile memory. The data space may be configured to collect a selected diagnostic information. The selected diagnostic information may include a first diagnostic information from a first source and a second diagnostic information from a second source. The computer program product may include collecting in the data space the selected diagnostic information. The computer program product may include releasing from the data space at least a portion of the selected diagnostic information in response to a triggering event.

Abstract: An apparatus-implemented method according to one embodiment includes detecting an error while writing data to a tape volume, and repositioning the tape in response to detecting the error. Further, the method includes determining, after the repositioning, a current position of the tape, and determining, based on the current position, whether a rewrite of data associated with the error to the tape volume is allowed. A system according to one embodiment includes a processor and logic integrated with and/or executable by the processor. The logic is configured to cause the foregoing method to occur. A computer program product according to one embodiment includes a computer readable storage medium having program instructions embodied therewith, the program instructions readable and/or executable by a controller to cause the controller to perform the foregoing method.

Abstract: A method, system and computer readable medium that predict times where cost of catalog caching is not efficient and deactivating catalog caching for that catalog during the predicted times. More specifically, an optimized catalog caching operation conducts historical analysis on catalog usage via records such as resource measurement facility (RMF) records and catalog statistical data.

Abstract: Provided are a computer program product, system, and method for managing multiple locks for data set members in a data set index. The data set index has leaf nodes and internal nodes. In response to determining that a current lock is set at a locked node that prevents a grant to a requested lock, a determination is made as to whether there are different first and second descendant nodes from the locked node at a same level of the tree data structure linked to the requested data set member and the locked data set member, respectively. If so, the requested lock for the requested data set member is set at the first descendant node, the current lock is moved to the second descendant node for the locked data set member and the requested lock is granted.

Abstract: In one aspect of the present description, operations are described for detecting whether programming code of a first computer program has been modified by a second computer program. In one embodiment, the modification detecting includes registering a first section of programming code of the first computer program in a first registry data structure. To detect a modification, the registered first section of programming code may be validated. In one embodiment, the validating includes comparing the section of programming code actually located at the first memory address to the registered first section of programming code. In another aspect, various selectable remedial actions may be taken upon detecting modification of programming code of the first computer program. Other features and aspects may be realized, depending upon the particular application.

Abstract: A method for preemptively migrating data in a tiered storage system is disclosed. In one embodiment, such a method includes identifying a regularly scheduled event that is associated with an increase in I/O activity. The method further identifies a virtual storage resource (e.g., file, data set, logical volume) associated with the increase in I/O activity. A timeline is then analyzed to determine timing for the regularly scheduled event. The method automatically promotes the virtual storage resource from lower-performing storage media to higher-performing storage media immediately prior to a start of the regularly scheduled event. The method automatically demotes the virtual storage resource to the lower-performing storage media after completion of the regularly scheduled event. A corresponding system and computer program product are also disclosed.

Abstract: Embodiments of a system and method are disclosed concerning the management of file usage. The method of controlling file access may manage a file with a target ID that has a sender and a recipient. The method may also establish a priority level key associated with the file. The priority level key may control file access. The method may provide the file access to the recipient if the recipient has access rights corresponding to the priority level key.

Abstract: A method for storing data includes establishing an extended generation group comprising a plurality of data sets. The plurality of data sets include a first data set containing primary members and a first number of generations of each of the primary members, and a second data set containing a second number of generations of each of the primary members. The first data set and the second data set are stored on different tiers of a tiered storage system, and may even be stored on different volumes. The first data set may be stored on higher performance storage media and the second data set may be stored on lower performance storage media. Additionally, the second number will typically be greater than the first number so that more generations are stored on lower performance storage media. A corresponding system and computer program product are also disclosed.

Abstract: A method of and system for managing a data set of a storage facility is disclosed. The data set may be a sequential-access data set. The method and system may include structuring the sequential-access data set to have a first group-of-records configured for adding a second group-of-records to the sequential-access data set. The method and system add a second group-of-records to the sequential-access data set. The method and system merge the second group-of-records with the first group-of-records in response to a triggering event. The method and system establish, in response to merging the second group-of-records with the first group-of-records, a marker configured to indicate the first and second group-of-records, as merged, is sorted.

Abstract: Metadata of a target data record set population is used to generate a test data record set population for use in data storage system testing. The metadata includes values for metadata parameters for individual target data record sets. The target data record set population as a whole has metadata parameter values distributed among sets of value ranges. A group of proportions is calculated for each set of value ranges. A test data record set population is generated based on the groups of proportions. As generated, the test data record set population meets a set of predetermined criteria.