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111 results about "Device migration" patented technology

A device migration is the process of moving data from one device to another. Device migrations are usually in response to either hardware corruption or device upgrades and, to a much lesser extent, load balancing.

Continuing an application session using a different device from one that originally initiated the application session while preserving session while preserving session state and data

The present invention discloses a solution for migrating an application session from one device to another. In the solution, a migration event can be detected during an application session involving an application server and an original device. Client-side session information and server-side session information can be stored. The client-side session information can be conveyed to a transfer device, which establishes a communication connection with the application server. This session can occur after an arbitrary delay from an occurrence of the migration event. Transfer device settings can be changed in accordance with the client-side session information and application server settings can be changed in accordance with the stored server-side information. An application session involving the transfer device and the application server can be conducted, beginning in a state approximately equivalent to that which existed at the time of the migration event.
Owner:MOTOROLA INC

System and method for raid management, reallocation, and restriping

The present disclosure relates to systems and methods for RAID Restriping. One method includes selecting an initial RAID device for migration based on at least one score, creating an alternate RAID device, moving data from the initial RAID device to the alternate RAID device, and removing the initial RAID device. The method may be performed automatically by the system or manually. The method may be performed periodically, continuously, after every RAID device migration, upon addition of disk drives, and / or before removal of disk drives, etc. One system includes a RAID subsystem and a disk manager configured to automatically calculate a score for each RAID device, select a RAID device based on the relative scores of the RAID devices, create an alternate RAID device, move data from the selected RAID device to the alternate RAID device, and remove the selected RAID device.
Owner:DELL INT L L C

Data migration with source device reuse

Releasing a data set at a source device in connection with migrating data from the source device to a target device includes mapping application address space to address space containing metadata for the target device and providing additional local metadata therefor, replacing within the application the address of metadata for the source device with the address of metadata for the target device, setting a diversion flag that is part of the additional local metadata, where the diversion flag indicates a remapping of extent, and closing and unallocating the data set at the source device. Releasing a data set at a source device in connection with migrating data from the source device to a target device may also include determining if an application uses standard I / O operations. The metadata may include UCB data.
Owner:EMC IP HLDG CO LLC

Performing Online Data Migration With Concurrent Active User Access to the Data

A network server migrates dataset blocks from a source storage device to a target storage device while continuing to service user requests for the data stored in the dataset blocks. A control driver executing at the network server tracks the location of the dataset blocks during the data migration as being at either the source storage device or the target storage device. Upon receiving a user request for the data, the control driver uses the tracking information to determine whether the dataset blocks associated with the requested data have been migrated to the target storage device or are still stored at the source storage device. The control driver then retrieves the data associated with the requested dataset blocks from the determined source or target storage device.
Owner:CA TECH INC

Virtualizing Sockets to Enable the Migration of a System Environment

Techniques for maintaining connectivity between a remote application stored on a remote device and an application being executed in a system environment, wherein the system environment is migrated from a first device to a second device, are provided. A first connection between the remote application stored on the remote device and the application being executed in the system environment stored on the first device is established via a first communication over a first negotiation channel. The first negotiation channel connects a first socket layer interface linked to the application being executed in the system environment to a second socket layer interface linked to the remote application. The first connection between the remote application and the application being executed in the system environment is disconnected for migration of the system environment from the first device to the second device. Disconnecting the first connection is coordinated via the first negotiation channel. A second connection between the remote application stored on the remote device and an application being executed in the migrated system environment stored on the second device is established via a second communication over a second negotiation channel. The second negotiation channel connects a third socket layer interface linked to the application being executed in the migrated system environment to the second socket layer interface linked to the remote application.
Owner:IBM CORP

Link failure processing method, intelligent resilient framework (IRF) member device and data communication device

ActiveCN102970157AAvoid packet lossSolve the problem that is easy to cause traffic lossData switching networksDevice migrationMassage
The invention provides a link failure processing method, an intelligent resilient framework (IRF) member device and a data communication device. The link failure processing method includes: when a stack member device of an IRF is determined to be in a forbidden state, the stack member device transmits informing massages to upstream and downstream devices to enable the upstream and downstream devices to be in informing states, and then business data can be prevented from being transmitted to the stack member device, wherein the informing state shows that the upstream and downstream devices receive business data transmitted by the stack member device but not transmit the business data to the stack member device; simultaneously, the stack member device keeps hardware forwarding table items to be invariable, transmits the remaining business data on the stack member device to the upstream and downstream devices according to the hardware forwarding table items and turns into the forbidden state when all the remaining business data are determined to be forwarded. By means of the link failure processing method, the IRF member device and the data communication device, the phenomenon of package loss when the IRF stack member device is in the forbidden state is avoided.
Owner:XINHUASAN INFORMATION TECH CO LTD

Method for storing power-fail data of cache memory, equipment and system thereof

The embodiment of the invention discloses a method for storing power-fail data of a cache memory, equipment and a system thereof. The method comprises the steps: when power-fail occurs in a memory system, configuration information sent by a central processing unit (CPU) is received; the mapping relationship between the address of the data in the cache memory and the address in storage equipment is established according to the configuration information; signaling carrying the mapping relationship is sent to the cache memory, and the cache memory is caused to transfer the stored data to the corresponding storage equipment according to the signaling. When power-fail occurs in the memory system, the embodiment of the invention transfers and backups the data in the cache memory to other storage equipment according to the mapping relationship set up by the configuration information, so as to write the data in the cache memory into the storage equipment in a way of backup to achieve the aim of data backup, thus protecting the data stored in the cache memory and ensuring the data not to be lost.
Owner:HUAWEI TECH CO LTD

Thermal migration method and device for virtual machine direct connection equipment

The embodiment of the invention discloses a thermal migration method and device for virtual machine direct connection equipment. One specific embodiment of the method comprises the following steps: executing a register state synchronization method by calling a register state synchronization interface, and synchronizing a register state of source end virtual machine direct connection equipment to atarget end virtual machine; cancelling a transparent transfer state of the source end virtual machine direct connection equipment, and iteratively executing the following synchronization operations in multiple rounds and migrating the source end virtual machine direct connection equipment to the target end virtual machine: executing the register state synchronization method by calling the register state synchronization interface, capturing a read-write operation on a register of the source end virtual machine direct connection equipment in a migration process, and executing the captured read-write operation on a register of the target end virtual machine direct connection equipment; and executing a DMA dirty page synchronization method by calling a DMA dirty page transmission interface, and writing data corresponding to a DMA dirty page of the source end virtual machine direct connection equipment into a memory of the target end virtual machine. The embodiment of the invention can realize the thermal migration of direct connection equipment without changing a kernel of a virtual machine.
Owner:BEIJING BAIDU NETCOM SCI & TECH CO LTD
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