International Business Machines Corporation

Stanley Mark Kissinger

Lyn Lequam Ashton

Michael Ray Noel

Erika Dawson

Glenn Randle Wilcock

Lisa Joan Gundy

Shannon Lyn Gallaher

Snehal S Bhakta

Jonathan Wayne Peake

Thomas W Bish

Kirby Grant Dahman

Gavin Stuart Johnson

Jerry Wayne Pence

Jon Arthur Lynds

Linda Jean Schiltz

William D McEwen

Jean Rawwei Chang

Edward A Baker, Jr

Sean P McMillen

A method is now provided that improve backing up data sets. Each database transaction is registered to a central repository prior to starting the database transaction, each database transaction comprising a plurality of writes to be executed for a database application on a database, and quiescing all database transactions registered to the central repository to thereby wait for all ongoing writes of the database transactions registered to the central repository to complete and to release control of the database to the database application.

Methods, systems, and physical computer storage media for backing up a database

A method is now provided that improve backing up server data sets. Each server database transaction is registered to a central server repository prior to starting the database transaction, each database transaction comprising a plurality of writes to be executed for a database application on a database, and quiescing all database transactions registered to the central server repository to thereby wait for all ongoing writes of the database transactions registered to the central server repository to complete and to release control of the database.

Methods, systems, and physical computer storage media for backing up a server database

Methods, systems, and physical computer storage media are now provided that improve backing up data sets. Each database transaction is registered to a central repository prior to starting the database transaction, each database transaction comprising a plurality of writes to be executed for a database application on a database, receiving a first signal indicating a start of a backup application on the database, and quiescing all database transactions registered to the central repository to thereby wait for all ongoing writes of the database transactions registered to the central repository to complete and to release control of the database to the database application.

Systems and physical computer storage media are now provided that improve backing up data sets. Each database transaction is registered to a central repository prior to starting the database transaction, each database transaction comprising a plurality of writes to be executed for a database application on a database, receiving a first signal indicating a start of a backup application on the database, and quiescing all database transactions registered to the central repository to thereby wait for all ongoing writes of the database transactions registered to the central repository to complete and to release control of the database to the database application.

A method for offloading volume space reclamation operations to virtual tape systems is disclosed herein. In certain embodiments, such a method includes writing instruction information to a virtual tape system for use in performing a reclamation operation on a source virtual tape volume. The instruction information identifies the source virtual tape volume as well as valid objects in the source virtual tape volume. The virtual tape system then transforms the source virtual tape volume by retaining valid objects in the source virtual tape volume, removing invalid objects in the source virtual tape volume, and updating metadata associated with the source virtual tape volume to reflect changes made thereto. This generates an updated source virtual tape volume of reduced size. A corresponding computer program product and system are also disclosed and claimed herein.

Offloading volume space reclamation operations to virtual tape systems

An apparatus, system, and method are presented for scaling storage media to improve data access performance. A scaling module is provided and configured to receive a dataset, identify storage characteristics of the dataset, make a determination based upon user-defined storage criteria, and select a storage instruction. In one embodiment, the storage instruction is configured to scale the storage medium to a predefined capacity. The predefined capacity of the storage medium is configured to optimize data access performance. Alternatively, the storage instruction is configured to not scale the storage medium. Additionally, the present invention may be configured to map and track the storage medium while the dataset is being written to or read from the storage medium.

System method and apparatus for optimal performance scaling of storage media

An apparatus and system are presented for utilizing tape storage media segmentation to improve data access performance. A segmented tape storage medium within a tape cartridge having a first and second segment is utilized. A selection module allows a user to select a user-defined capacity of the tape storage medium that is less than the usable capacity of the tape storage medium. The user-defined capacity allows the user to prefer improved data access over tape storage capacity. Data, when written to the tape, is written only within the user-defined capacity. Data may be written exclusively on the first segment or written on both the first segment and second segment allowing data access to be improved. In addition, the user-defined capacity may correspond to the full capacity of the tape storage media.

Apparatus, system, and method for utilizing tape media segmentation

An apparatus and system are disclosed for optimizing fast access data storage on segmented tape media. The apparatus, in one embodiment, is configured to selectively write data to a tape storage medium. The selection module may select data for storage as one of fast access and slower access. Fast access data may be stored on the first segment, or fast access portion, of a tape storage medium to provide optimal speed for data retrieval. Slower access data may be stored on the remaining available storage space of the tape storage medium. Additionally, read requests for fast access data may be accessed more quickly than read requests for slower access data. Thus, user data may be selected and written to a tape storage medium relative to a preferred access time.

Apparatus, system, and method for optimizing fast access data storage on segmented tape media

A deterministic flushing of one or more storage data objects buffered within a storage data buffer to a storage medium involves a processing of a host data object including writing a storage data object corresponding to the host data object to the storage data buffer, and a flushing of the storage data object(s) buffered within the storage data buffer to the storage medium prior to or subsequent to (i.e., relative to) the writing of the storage data object corresponding to the host data object to the storage data buffer as a function of an occurrence determination of a storage data buffer flushing event. The deterministic flushing further involves a queuing of a host data buffer meta-data update request for later processing.

Data object processing of storage drive buffers

A method is disclosed for optimizing fast access data storage on segmented tape media. The apparatus, in one embodiment, is configured to selectively write data to a tape storage medium. The selection module may select data for storage as one of fast access and slower access. Fast access data may be stored on the first segment, or fast access portion, of a tape storage medium to provide optimal speed for data retrieval. Slower access data may be stored on the remaining available storage space of the tape storage medium. Additionally, read requests for fast access data may be accessed more quickly than read requests for slower access data. Thus, user data may be selected and written to a tape storage medium relative to a preferred access time.

A method is presented for utilizing tape storage media segmentation to improve data access performance. A segmented tape storage medium within a tape cartridge having a first and second segment is utilized. A selection module allows a user to select a user-defined capacity of the tape storage medium that is less than the usable capacity of the tape storage medium. The user-defined capacity allows the user to prefer improved data access over tape storage capacity. Data, when written to the tape, is written only within the user-defined capacity. Data may be written exclusively on the first segment or written on both the first segment and second segment allowing data access to be improved. In addition, the user-defined capacity may correspond to the full capacity of the tape storage media.

Method for utilizing tape media segmentation

A data management system responds to migration requests by automatically invoking a shortcut migration process for suitable candidates. Suitability of candidate data is efficiently evaluated using, among other considerations, the presence or absence of an expedited access indicator for the data which is previously set when the data is recalled from backup storage. In the shortcut migration process, the system automatically reconnects a previously migrated copy of the data object, if available.

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Tucson, AZ, United States of America

Stanley Mark Kissinger