Abstract: An embodiment of the invention may include a method, computer program product, and system for data transfer management. The embodiment may include receiving a data packet, by a first server, from a load balancer. The received data packet is part of a data flow. The embodiment may include determining, by the first server, whether the received data packet is part of an existing data flow connection served by the first server. Based on determining that the received data packet is not part of an existing data flow served by the first server, the embodiment may include determining, by the first server, whether the received data packet is part of a new data flow connection. Based on determining that the received data packet is not part of a new data flow connection, the embodiment may include notifying, by the first server, the load balancer.

Abstract: An embodiment of the invention may include a method, computer program product, and system for data transfer management. The embodiment may include receiving a data packet, by a first server, from a load balancer. The received data packet is part of a data flow. The embodiment may include determining, by the first server, whether the received data packet is part of an existing data flow connection served by the first server. Based on determining that the received data packet is not part of an existing data flow served by the first server, the embodiment may include determining, by the first server, whether the received data packet is part of a new data flow connection. Based on determining that the received data packet is not part of a new data flow connection, the embodiment may include notifying, by the first server, the load balancer.

Abstract: A method for managing data, the method includes: providing a write-back cache unit coupled to at least one storage unit; receiving a request to write a new data version to a certain cache data allocation unit; determining, in response to a data storage policy, whether to overwrite a cached data version being cached in the certain cache data allocation unit or to perform a destage of the cached data version to a first storage unit before writing the new data version to the certain cache allocation unit; receiving a request to read a data version that corresponds to a certain point in time and scanning a first data structure representative of write operations and a second data structure representative of revert operations to determine a location of the requested data version.

Abstract: Methods and systems of computing, involve identifying a target location for live migration of virtual machine services, delivering the virtual machine services to an operating system from a source location, migrating the virtual machine services a first time via a data network from the source location to an intermediate location, delivering the virtual machine services to the operating system from the intermediate location, and migrating the virtual machine services a second time from the intermediate location to the target location via the data network. Breaks in the virtual machine services to the operating system while migrating the virtual machine are minimal.

Abstract: Methods and systems of computing, involve identifying a target location for live migration of virtual machine services, delivering the virtual machine services to an operating system from a source location, migrating the virtual machine services a first time via a data network from the source location to an intermediate location, delivering the virtual machine services to the operating system from the intermediate location, and migrating the virtual machine services a second time from the intermediate location to the target location via the data network. Breaks in the virtual machine services to the operating system while migrating the virtual machine are minimal.

Abstract: A rollback support method for transactions a node among nodes in a distributed system, including modifying a disposable cache copy of data as part of transaction, propagating a version state and/or a data state of the modified cache to any of the nodes, verifying non-violation of a transaction semantic and/or a replication policy relating to the transaction, committing the transaction to any nodes if successful, revising a version state of other reliable replicas and disposable cache copies in the system based on the version state of the modified disposable cache copy, the disposable cache copies being members of a membership-based view, and updating a data state of other reliable replicas in the system based on the data state of the modified copy, and aborting the transaction if it fails, including restoring the disposable cache copy based on any reliable replicas and/or disposable cache copies in the system.

Abstract: A method, device and computer program product for managing data versions.

Abstract: Some demonstrative embodiments of the invention include, for example, devices, systems and methods of operating one or more virtual logical sites. A method may include, for example, running on a server at least one first virtual machine implementing at least part of a first virtual logical site, and at least one second virtual machine implementing at least part of a second virtual logical site interchangeable with the first virtual logical site. Other embodiments are described and claimed.

Abstract: A rollback support method for transactions a node among nodes in a distributed system, including modifying a disposable cache copy of data as part of transaction, propagating a version state and/or a data state of the modified cache to any of the nodes, verifying non-violation of a transaction semantic and/or a replication policy relating to the transaction, committing the transaction to any nodes if successful, revising a version state of other reliable replicas and disposable cache copies in the system based on the version state of the modified disposable cache copy, the disposable cache copies being members of a membership-based view, and updating a data state of other reliable replicas in the system based on the data state of the modified copy, and aborting the transaction if it fails, including restoring the disposable cache copy based on any reliable replicas and/or disposable cache copies in the system.

Abstract: A method for managing data, the method includes: providing a write-back cache unit coupled to at least one storage unit; receiving a request to write a new data version to a certain cache data allocation unit; determining, in response to a data storage policy, whether to overwrite a cached data version being cached in the certain cache data allocation unit or to perform a destage of the cached data version to a first storage unit before writing the new data version to the certain cache allocation unit; receiving a request to read a data version that corresponds to a certain point in time and scanning a first data structure representative of write operations and a second data structure representative of revert operations to determine a location of the requested data version.

Abstract: A method, device and computer program product for managing data versions.

Abstract: Disclosed are methods and systems for performing a change-over to one or more components of a computing system. As part of a change-over procedure to one or more system components (i.e. software routines) of a production computing system, a clone of one or more production system components of the production computing system may be generated on the same computing platform as the production computing system component is running. According to some embodiments of the present invention, “virtualization” is one technique which may be used to generate and maintain a clone system component or virtual machine.