Abstract: An architecture and apparatus for atomic operations across multi-volume or multi-LUNs in a data storage environment. It is difficult to manage data storage and replication operations occurring across such multi-LUNs. The architecture and apparatus embodiments of the invention overcome these deficiencies and facilitate data storage management and replication operations through library initializations in response to host I/O requests to complete atomic operations. Accordingly, the invention ensures the integrity of the data being managed without introducing significant cost or overhead.

Abstract: A method system and program product for atomic operations across multi-volume or multi-LUNs in a data storage environment. It is difficult to manage data storage and replication operations occurring across such multi-LUNs. The method system and program product embodiments overcome these deficiencies and facilitate data storage management and replication operations through library initializations in response to host I/O requests. Accordingly, the invention ensures the integrity of the data being managed without introducing significant cost or overhead.

Abstract: This invention enables managing data consistency between different data volumes by managing I/O traffic in a data storage environment. A methodology for managing data consistency, in accordance with the principles of the invention, comprises the steps of arresting processing of I/O traffic during an administrative operation, queuing any I/O that follow the arresting step in a queuing data structure and processing each queued I/O until the I/O processing is completed. Certain implementations of the invention include a system, a computer program product, or an apparatus, wherein each embodiment is configured for carrying out the steps involved in the methodology.