International Business Machines Corporation

Amir Sasson

Itzhack Goldberg

Shachar Fienblit

Eli Malul

Akram Bitar

Olympia Gluck

Idan Ben-Harrush

Michael Sternberg

Uri Wolloch

Nicholas D Fifer

Dan Ramon

Gil Sasson

Rafael Eliezer Diaz

A method for re-establishing a backup relationship between first and second volumes associated with one or more storage media in a data storage system is provided. The method comprises storing first information for preserving the backup relationship, in response to or in advance of receiving a request to terminate the backup relationship; recording changes to the first or second volumes that occur subsequent to terminating the backup relationship; and re-establishing the backup relationship between the first and second volumes according to the first information such that the first and second volumes are synchronized by merging the recorded changes with the first or second volumes.

Managing backup relationships in a data storage system

A method, system, and computer program product for reducing power consumption in a display area of an electronic device is provided. The method includes selecting a first window within the display area to be highlighted using a first input command of a user; locating the first window in the display area; and reducing power to at least portions of the display area not corresponding to the first window.

Method and apparatus for reducing power consumption of an electronic display

A method for consistent version of multiple information items is provided. The method includes receiving a conditional request to copy a version of multiple information items at a condition fulfillment point of time that is associated with a fulfillment of a condition of the conditional request. Then determining that the condition is fulfilled, and participating in generating a condition fulfillment point in time version of the multiple information items.

Conditional storage of multiple information items

A method for synchronizing data stored on primary and secondary storage volumes in a distributed data recovery system is provided. The method comprises associating N data recovery relationships between a primary volume and N secondary volumes by way of implementing N data structures respectively. Each data structure comprises a first indicator that indicates whether data stored on a first track of the primary volume has been updated, due to a first operation performed by a host application. One or more of the N data structures are stored in at least a first data storage medium with high speed data access rates.

Efficient data synchronization in a distributed data recovery system

Producing snapshots of data stored on a data storage device, the method including producing a first snapshot of data stored in a set of data storage units on a data storage device, where the first snapshot is allowed to include data written to the set of data storage units during the production of the first snapshot, and producing a second snapshot of the data stored in the set of data storage units on the data storage device, where the production of the second snapshot is begun after the completion of the first snapshot, and where the second snapshot includes only data present in the set of data storage units before the production of the second snapshot is begun.

Data storage snapshot with reduced copy-on-write

Systems and methods for data swapping in a storage network are provided. The method comprises associating a flag with a first track on a first volume (TA) and a first track on a second volume (TB) to indicate that I/O access to TAis to be redirected to TB, and that I/O access to TBis to be redirected to TA; locking TAand TBto prohibit I/O access to TAand TB; copying data stored on TAand TBto cache; swapping data between TAand TB; unlocking TAand TBto allow I/O access to TAand TB; redirecting I/O access to TB, in response to receiving an I/O request to access TA, when TAis flagged, and redirecting I/O access to TA, in response to receiving an I/O request to access TB, when TBis flagged.

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Haifa, Israel

Amir Sasson