A history management method for managing history information of multiple vehicles using blockchains is provided. The history management method includes generating a master block from history information collected in a vehicle, setting a node serving as a storage destination of a backup block of the master block per block, storing, together with the master block, backup blocks that are different in history information collecting vehicle from the master block in a block storage unit, and sending the backup block for a particular vehicle requested in a recovery request.

Virtual memory address space is divided according to areas of the virtual memory address and allocating some areas to low-cost volatile memory (such as RAM) when the memory areas are not required by an application to be stored in non-volatile memory, such as NVDIMM. A loader mechanism creates and maintains a layout address table in non-volatile memory for recovery from an unexpected reset.

Methods, systems and computer program products for high-availability computing. In a computing configuration comprising a primary node, a first backup node, and a second backup node, a particular data state is restored to the primary node from a backup snapshot at the second backup node. Firstly, a snapshot coverage gap is identified between a primary node snapshot at the primary node and the backup snapshot at the second backup node. Next, intervening snapshots at the first backup node that fills the snapshot coverage gap are identified and located. Having both the backup snapshot from the second backup node and the intervening snapshots from the first backup node, the particular data state at the primary node is restored by performing differencing operations between the primary node snapshot, the backup snapshot from the second backup node, and the intervening snapshots of the first backup node.

Embodiments provide for a primary storage array having multiple storage tiers. The multiple storage tiers include one or more performance tiers and at least one deduplicated storage tier storing deduplicated data. One embodiment provides for a data storage system including the storage array and an I/O engine to manage I/O requests for the storage array. The data storage system additionally includes a virtual execution environment to execute a virtual backup engine, the virtual backup engine to generate backup data for the one or more storage tiers of primary storage and deduplicate the backup data and a resource manager to manage a resource allocation to the virtual backup engine based on a hint received from the virtual backup engine, the hint associated with a backup operation that has a characterization selected from a set including computationally intensive and I/O intensive.

According to one embodiment, the memory system includes a nonvolatile semiconductor memory, a data buffer, a volatile memory for storing a management table uniquely associates the user data with an address of the physical storage region of nonvolatile semiconductor memory, a controller that carries out a force quit process for writing the user data stored in a data buffer, the management table stored in volatile memory into the nonvolatile semiconductor memory, and a storage battery. The controller starts the force quit process prior to the power supply of the internal power supply regulator is switched from an external power supply to the storage battery.

A storage system includes a host including a processor and a memory unit, and a storage device including a controller and a non-volatile memory unit. The processor is configured to output a write command, write data, and size information of the write data, to the storage device, the write command that is output not including a write address. The controller is configured to determine a physical write location of the non-volatile memory unit in which the write data are to be written, based on the write command and the size information, write the write data in the physical write location of the non-volatile memory unit, and output the physical write location to the host. The processor is further configured to generate, in the memory unit, mapping information between an identifier of the write data and the physical write location.

A method for accelerating data operations across a plurality of nodes of one or more clusters of a distributed computing environment. Rack awareness information characterizing the plurality of nodes is retrieved and a non-volatile memory (NVM) capability of each node is determined. A write operation is received at a management node of the plurality of nodes and one or more of the rack awareness information and the NVM capability of the plurality of nodes are analyzed to select one or more nodes to receive at least a portion of the write operation, wherein at least one of the selected nodes has an NVM capability. A multicast group for the write operation is then generated wherein the selected nodes are subscribers of the multicast group, and the multicast group is used to perform hardware accelerated read or write operations at one or more of the selected nodes.

Embodiments of the present disclosure provide a method, device, and computer program product for managing a backup system. The method comprises obtaining a state of a backup system, wherein the backup system comprises a plurality of backup servers and a plurality of backup clients, the plurality of backup servers is communicatively coupled to the plurality of backup clients via a network, and wherein at least one backup server from the plurality of backup servers is configured to back up data of at least one backup client allocated from the plurality of backup clients to the at least one backup server, determining a reward score corresponding to the state of the backup system and, determining, based on the state of the backup system and the reward score, configuration information for the backup system, the configuration information indicating allocation of the plurality of backup clients to the plurality of backup servers.

A computer-implemented system and method of backing up and restoring a containerized application or a cloud-based application using a datamover service includes determining a stateful set of services of the containerized application or cloud-based application to be backed up. A persistent volume associated with the determined stateful set of services of the containerized application or cloud-based application is identified. Then, a snapshot of the identified persistent volume is created and a new persistent volume is created from the snapshot. The created new persistent volume is attached to a datamover service. Data from the created new persistent volume is then copied to a network file system or storage system using the datamover service, thereby creating backup data stored in a storage system.

A method, computer system, and a computer program product for calculating bandwidth requirements is provided. The present invention may include receiving a recovery point objective (RPO). The present invention may also include simulating, using a virtual disk, a set of inter-site data transfers between a first data storage controller and a second data storage controller, wherein the second data storage controller is modelled by the virtual disk. The present invention may then include collecting a set of data correlating to a set of bandwidth factors, based on the simulated set of inter-site data transfers. The present invention may further include calculating, using the virtual disk, a bandwidth required for data replication for disaster recovery, based, at least in part, on the set of bandwidth factors and the RPO.