Abstract: A data backup and recovery method and system using allocated data blocks include identifying a first snapshot associated with a virtual machine; accessing changed block tracking data associated with data changes occurred in the virtual machine, the data changes corresponding to a set of changed data blocks; accessing block allocation status data associated with the set of changed data blocks; identifying one or more allocated data blocks from the set of changed data blocks that are associated with allocated status based on the block allocation status data; and storing the one or more allocated data blocks to a storage device.

Abstract: A sending method, a receiving method, an apparatus, a system, a device, and a storage medium. The receiving method includes: obtaining an encoded data block, where the encoded data block includes a plurality of data blocks, a plurality of first parity bits, and an FEC parity bit, the plurality of first parity bits are in one-to-one correspondence with the plurality of data blocks, and the FEC parity bit corresponds to the plurality of data blocks; and then checking the corresponding data blocks based on the plurality of first parity bits and/or the FEC parity bit, to obtain a decoding result of the encoded data block.

Abstract: This application is applied to the field of communication technologies, and provides a data transmission method, a communication apparatus, and a communication system, to resolve a problem in the conventional technology that user service bandwidth is used for encrypted transmission. The method includes generating N ciphertext data streams, where a first ciphertext data stream is any ciphertext data stream in the N ciphertext data streams. The first ciphertext data stream includes at least two first alignment markers AMs and at least two ciphertext data segments. One ciphertext data segment is included between every two first AMs, and one first AM is included between every two ciphertext data segments. The at least two first AMs are used for aligning data of the N ciphertext data streams.

Abstract: The automatic and accurate estimation method for gross primary productivity of a forest ecosystem based on a remote sensing technology includes: the real-time position signals of a remote sensing collection device is acquired, the forest map is acquired and the real-time position signals is displayed on the map; the meteorological parameters and forest characteristic parameters of the forest are collected by a remote sensing collection device, and the preliminary estimation on the GPP of the forest ecosystem is performed by a ground estimation model; the geomorphological features of the map are collected, it is judged whether to correct the preliminary estimation result according to the geomorphological features, and if the correction is needed, the preliminary estimation result is adjusted; and the adjusted estimation result is stored, and the dynamic fluctuation chart of the adjusted estimation result is displayed on a visual device.

Abstract: A security handling method includes a first device performing a security handling operation with a second device, where the security handling operation includes one or more of the following operations: mutual authentication or key agreement. After successfully performing the security handling operation, the first device monitors a status of a link between the first device and the second device. The first device re-performs the security handling operation with the second device based on a first moment, where the first moment is a moment at which it is monitored that the status of the link changes from an online state to an offline state.

Abstract: This application discloses example mode negotiation methods and apparatuses, example devices, example systems, and example computer-readable storage medium. One example method includes receiving, by a first device, a first data stream sent by a second device, where the first data stream includes a plurality of first alignment marker (AM) code blocks, and a spacing between the plurality of first AM code blocks corresponds to an operating mode of the second device. The first device locks, according to a first reference spacing corresponding to at least one operating mode of the first device, the first AM code blocks included in the first data stream, and determines the operating mode of the second device according to a first reference spacing at which the first AM code blocks are successfully locked.

Abstract: Methods, systems, and devices for data management are described. A data management system (DMS) may maintain a set of backup parameters for backups of data stored by a computing system. The computing system may store a copy of the set of backup parameters. The set of backup parameters may be modified at the DMS, the computing system, or both. To synchronize, the DMS may obtain a value of a first generation identifier (ID) associated with and a first state of the set of backup parameters as stored by the computing system. The DMS may compare the first state with a second state of the set as stored by the DMS and may compare the value of the first generation ID with a value of a second generation ID as stored by the DMS. The DMS may determine whether to modify the set of backup parameters based on the comparisons.

Abstract: A data storage infrastructure may establish a partition that includes a first data center and a second data center that is geographically separated from the first data center. The data storage infrastructure may replicate a full snapshot and one or more incremental snapshots of a virtual machine from a first data management platform to a second data management platform, where the virtual machine is migrated from a first host of the first host group to a second host of the second host group upon a failover event occurring at the first data center. The data storage infrastructure may then capture an incremental snapshot of the virtual machine based on linking a first instance of the virtual machine that was replicated from the first data management platform and a second instance of the virtual machine that is managed by the second data management platform.

Abstract: The present disclosure relates to the technical field of semiconductors, and provides a semiconductor structure and a manufacturing method thereof. The semiconductor structure includes an anti-fuse unit, and the anti-fuse unit includes a selection unit and a memory cell. The semiconductor structure further includes: a substrate; a gate provided in the substrate, where in a cross section perpendicular to the substrate, the gate includes a first sidewall and a second sidewall opposite to each other; a first doped region, provided in the substrate and close to the first sidewall; a second doped region, provided in the substrate and close to the second sidewall; and an oxide layer, covering a partial surface of the gate. The gate, the first doped region and the oxide layer form the memory cell; the gate, the first doped region, the second doped region, and the oxide layer form the selection unit.

Abstract: Techniques for managing proxy virtual machines are disclosed. In some embodiments, a computer system deploys proxy virtual machines on a data center in an intelligent way in order to optimize performance and efficiency for backing up data from and restoring data to the data center, using the topology of the data center to determine how many proxy virtual machines to deploy and on which specific hosts to deploy the proxy virtual machines. Rather than determining the number of proxy virtual machines to deploy based on a maxing out of all of the ports on each proxy virtual machine to handle a planned quantity of backup jobs, the computer system may calculate the number of proxy virtual machines to use based on a rule that ports be left available for un-planned on-demand restore jobs.

Abstract: A status notification method includes: determining a lock status of a logical lane in a first optical module, where the first optical module belongs to a first network device, and the lock status includes a locked state or an unlocked state; and sending uplink notification information when the lock status indicates that the logical lane in the first optical module is locked, where the uplink notification information is used to enable a second optical module to determine that the logical lane in the first optical module is locked, the second optical module belongs to a second network device, and the first optical module is coupled to the second optical module.

Abstract: Example embodiments relate generally to systems and methods for continuous data protection (CDP) and more specifically to an input and output (I/O) filtering framework and log management system to seek a near-zero recovery point objective (RPO).

Abstract: Methods, systems, and devices for data management are described. A data management system (DMS) may maintain a set of backup parameters for backups of data stored by a computing system. The computing system may store a copy of the set of backup parameters. The set of backup parameters may be modified at the DMS, the computing system, or both. To synchronize, the DMS may obtain a value of a first generation identifier (ID) associated with and a first state of the set of backup parameters as stored by the computing system. The DMS may compare the first state with a second state of the set as stored by the DMS and may compare the value of the first generation ID with a value of a second generation ID as stored by the DMS. The DMS may determine whether to modify the set of backup parameters based on the comparisons.

Abstract: A method for preparing a curable silicone pressure sensitive adhesive emulsion includes preparing a dispersion of benzoyl peroxide and a phenoxy-functional alcohol and thereafter combining the dispersion with the other starting materials of the emulsion.

Abstract: A data storage infrastructure may establish a partition that includes a first data center and a second data center that is geographically separated from the first data center. The data storage infrastructure may replicate a full snapshot and one or more incremental snapshots of a virtual machine from a first data management platform to a second data management platform, where the virtual machine is migrated from a first host of the first host group to a second host of the second host group upon a failover event occurring at the first data center. The data storage infrastructure may then capture an incremental snapshot of the virtual machine based on linking a first instance of the virtual machine that was replicated from the first data management platform and a second instance of the virtual machine that is managed by the second data management platform.

Abstract: A peelable coating composition is provided. The composition may be applied onto a substrate surface and then it dries/cures to a peelable coating. The composition comprises an aqueous vinyl (meth)acrylic-based copolymer emulsion binder in combination with a silicone polyether copolymer and optionally one or more additives. The resulting peelable coating provides temporary protection to articles and/or substrates during a period of construction, storage or transportation or the like, and is designed to be water-resistant such that it is able to continue protecting substrates after periods of time in the open-air, exposed to the elements, e.g., rain, etc. A method is also provided.

Abstract: A bit block sending method includes generating at least one first bit block, where the at least one first bit block is used to feed back whether at least one first packet is correctly received, the at least one first bit block further includes a first sequence field, and the first sequence field is used to carry first sequence information of the at least one first packet, and sending the at least one first bit block.

Abstract: This application provides a data transmission method, a communication apparatus, and a communication system. The method includes: generating N ciphertext data flows, where a first ciphertext data flow is any one of the N ciphertext data flows. The first ciphertext data flow includes at least two first alignment markers AMs, at least two encryption parameter sets, and at least two ciphertext data segments. One ciphertext data segment and one encryption parameter set are included between every two first AMs. The at least two first AMs are used for data alignment of the N ciphertext data flows. The method further includes sending the N ciphertext data flows. The data transmission method may be applied to a physical layer of an optical module or a network device.

Abstract: Techniques for managing proxy virtual machines are disclosed. In some embodiments, a computer system deploys proxy virtual machines on a data center in an intelligent way in order to optimize performance and efficiency for backing up data from and restoring data to the data center, using the topology of the data center to determine how many proxy virtual machines to deploy and on which specific hosts to deploy the proxy virtual machines. Rather than determining the number of proxy virtual machines to deploy based on a maxing out of all of the ports on each proxy virtual machine to handle a planned quantity of backup jobs, the computer system may calculate the number of proxy virtual machines to use based on a rule that ports be left available for un-planned on-demand restore jobs.

Abstract: Methods, systems, and devices for data management are described. A data management system (DMS) may maintain a set of backup parameters for backups of data stored by a computing system. The computing system may store a copy of the set of backup parameters. The set of backup parameters may be modified at the DMS, the computing system, or both. To synchronize, the DMS may obtain a value of a first generation identifier (ID) associated with and a first state of the set of backup parameters as stored by the computing system. The DMS may compare the first state with a second state of the set as stored by the DMS and may compare the value of the first generation ID with a value of a second generation ID as stored by the DMS. The DMS may determine whether to modify the set of backup parameters based on the comparisons.