Abstract: A quantum error correction (QEC) decoding system includes an error correction chip. The error correction chip is configured to: obtain error syndrome information of a quantum circuit; and decode the error syndrome information by running neural network decoders, to obtain error result information, a core operation of the neural network decoders being a multiply accumulate (MA) operation of unsigned fixed-point numbers obtained through numerical quantization. According to the present disclosure, for the system that uses the neural network decoders for QEC decoding, the core operation of the neural network decoders is the MA operation of unsigned fixed-point numbers obtained through numerical quantization, thereby minimizing the data volume and the calculation amount desirable by the neural network decoders, so as to better meet the requirement of real-time error correction.

Abstract: An underground mining method for unexploited coal in a boundary open-pit mine is provided. A shaft construction platform is arranged at one rock step to two rock steps above a coal seam. Intermediate bridges are built starting from a pit bottom. Mining area clay is laid on a working slope where no intermediate bridge is built and on a side slope with an outcrop of the coal seam as a sealing layer to seal the slopes. Auxiliary vertical shafts and main inclined shafts are dug. The pit bottom is dug downward to form a digging space on a side close to the working slope between two adjacent ones of the intermediate bridges, and clay is filled into the digging space to form an artificial water barrier layer. A roadway communicating the main inclined shafts and the auxiliary vertical shafts is constructed, and a coal seam stope face is arranged.

Abstract: An underground mining method for unexploited coal in a boundary open-pit mine is provided. A shaft construction platform is arranged at one rock step to two rock steps above a coal seam. Intermediate bridges are built starting from a pit bottom. Mining area clay is laid on a working slope where no intermediate bridge is built and on a side slope with an outcrop of the coal seam as a sealing layer to seal the slopes. Auxiliary vertical shafts and main inclined shafts are dug. The pit bottom is dug downward to form a digging space on a side close to the working slope between two adjacent ones of the intermediate bridges, and clay is filled into the digging space to form an artificial water barrier layer. A roadway communicating the main inclined shafts and the auxiliary vertical shafts is constructed, and a coal seam stope face is arranged.

Abstract: This application discloses a clock synchronization system, including a quantum control processor (QCP) and N digital/analog mutual conversion devices, each digital/analog mutual conversion device including a frequency conversion module and a signal synchronization module that includes a D flip-flop (DFF). The QCP generates a global synchronization signal and reference clock signals; and transmits the global synchronization signal and a reference clock signal to the frequency conversion module and transmits the global synchronization signal to the signal synchronization module of each conversion device. The frequency conversion module performs frequency conversion processing on the reference clock signal to obtain a target clock signal, and generates a signal synchronization instruction according to the global synchronization signal; and transmits the signal synchronization instruction and the target clock signal to the signal synchronization module.

Abstract: A quantum error correction (QEC) decoding system includes an error correction chip. The error correction chip is configured to: obtain error syndrome information of a quantum circuit; and decode the error syndrome information by running neural network decoders, to obtain error result information, a core operation of the neural network decoders being a multiply accumulate (MA) operation of unsigned fixed-point numbers obtained through numerical quantization. According to the present disclosure, for the system that uses the neural network decoders for QEC decoding, the core operation of the neural network decoders is the MA operation of unsigned fixed-point numbers obtained through numerical quantization, thereby minimizing the data volume and the calculation amount desirable by the neural network decoders, so as to better meet the requirement of real-time error correction.

Abstract: In a storage management system in which a storage apparatus is connected via a network to a volume allocation management server having a performance requirement analysis unit, a volume allocation unit, and a volume performance determining unit, the performance requirements of a business application using volume-allocating data and the performance characteristics of a volume serving as a data storage destination are determined, and on the basis of the resulting information, a volume which satisfies the performance requirements is selected as the data storage destination.

Abstract: A volume group comprising one or a plurality of logical volumes is set. A coexistence avoidance volume group having different array groups can be set to the volume group. Upon execution of preset volume search criteria, a logical volume is specified by carrying out a search in which are excluded array groups to which logical volumes in the coexistence avoidance volume belong.

Abstract: In a storage management system in which a storage apparatus is connected via a network to a volume allocation management server having a performance requirement analysis unit, a volume allocation unit, and a volume performance determining unit, the performance requirements of a business application using volume-allocating data and the performance characteristics of a volume serving as a data storage destination are determined, and on the basis of the resulting information, a volume which satisfies the performance requirements is selected as the data storage destination.

Abstract: A volume group comprising one or a plurality of logical volumes is set. A coexistence avoidance volume group having different array groups can be set to the volume group. Upon execution of preset volume search criteria, a logical volume is specified by carrying out a search in which are excluded array groups to which logical volumes in the coexistence avoidance volume belong.

Abstract: A volume group comprising one or a plurality of logical volumes is set. A coexistence avoidance volume group having different array groups can be set to the volume group. Upon execution of preset volume search criteria, a logical volume is specified by carrying out a search in which are excluded array groups to which logical volumes in the coexistence avoidance volume belong.

Abstract: In a storage management system in which a storage apparatus is connected via a network to a volume allocation management server having a performance requirement analysis unit, a volume allocation unit, and a volume performance determining unit, the performance requirements of a business application using volume-allocating data and the performance characteristics of a volume serving as a data storage destination are determined, and on the basis of the resulting information, a volume which satisfies the performance requirements is selected as the data storage destination.

Abstract: In a storage management system in which a storage apparatus is connected via a network to a volume allocation management server having a performance requirement analysis unit, a volume allocation unit, and a volume performance determining unit, the performance requirements of a business application using volume-allocating data and the performance characteristics of a volume serving as a data storage destination are determined, and on the basis of the resulting information, a volume which satisfies the performance requirements is selected as the data storage destination.

Abstract: The present invention provides a data migration technique enabling a required performance to be satisfied as closely as possible. A server obtains an IOPS measurement value of a plurality of business APs and an IOPS measurement value of a plurality of logical volumes serving as the access destinations of the respective business APs, and on the basis of the various obtained IOPS measurement values, selects a source sub-candidate from a plurality of VOLs. The server identifies a parity group to which the selected source sub-candidate belongs from a plurality of parity groups, sets the two or more VOLs belonging to the identified parity group as two or more source candidates, and selects a plurality of target candidates from a plurality of other VOLs.

Abstract: A volume group comprising one or a plurality of logical volumes is set. A coexistence avoidance volume group having different array groups can be set to the volume group. Upon execution of preset volume search criteria, a logical volume is specified by carrying out a search in which are excluded array groups to which logical volumes in the coexistence avoidance volume belong.

Abstract: In a storage management system in which a storage apparatus is connected via a network to a volume allocation management server having a performance requirement analysis unit, a volume allocation unit, and a volume performance determining unit, the performance requirements of a business application using volume-allocating data and the performance characteristics of a volume serving as a data storage destination are determined, and on the basis of the resulting information, a volume which satisfies the performance requirements is selected as the data storage destination.

Abstract: The data migration method of this invention is for a computer system. The data migration method is characterized in that the storage system measures, for each logical volume, a used I/O amount and a storage capacity of the logical volume, the management computer manages the logical volumes in groups by storing the association relation between the logical volumes and the groups, the management computer obtains, from the storage system, the used I/O amount of the logical volume and storage capacity, which are measured by the storage system, the management computer identifies a logical volume to which data is to be moved based on the ratio of the obtained I/O amount of the logical volume to the obtained storage capacity of the logical volume, and the management computer instructs the storage system to move data from the data's original logical volume to the logical volume designated as the migration destination.

Abstract: The present invention provides a data migration technique enabling a required performance to be satisfied as closely as possible. A server obtains an IOPS measurement value of a plurality of business APs and an IOPS measurement value of a plurality of logical volumes serving as the access destinations of the respective business APs, and on the basis of the various obtained IOPS measurement values, selects a source sub-candidate from a plurality of VOLs. The server identifies a parity group to which the selected source sub-candidate belongs from a plurality of parity groups, sets the two or more VOLs belonging to the identified parity group as two or more source candidates, and selects a plurality of target candidates from a plurality of other VOLs.

Abstract: To provide a file system including: a storage system having a plurality of volumes; a volume allocation table adapted to set the plurality of volumes for each directory; a file allocation table that stores attributes and divided block information of the file; a block reading table in which numbers of blocks read out in one reading operation for each volume are respectively set; and a read control module that controls to read data from the volume; wherein a read control module, when a read command is received, determines a volume to be read from the volume allocation table, determines the number of blocks read for each volume by referring to the block reading table, determines the blocks read for each volume based on the volume, the number of blocks, and the block information, and reads from each volume in parallel.

Abstract: The data migration method of this invention is for a computer system. The data migration method is characterized in that the storage system measures, for each logical volume, a used I/O amount and a storage capacity of the logical volume, the management computer manages the logical volumes in groups by storing the association relation between the logical volumes and the groups, the management computer obtains, from the storage system, the used I/O amount of the logical volume and storage capacity, which are measured by the storage system, the management computer identifies a logical volume to which data is to be moved based on the ratio of the obtained I/O amount of the logical volume to the obtained storage capacity of the logical volume, and the management computer instructs the storage system to move data from the data's original logical volume to the logical volume designated as the migration destination.

Abstract: There are included the steps of receiving an operation input for defining a plurality of setting information pieces on a disk subsystem as a command by one operation, storing the defined setting information as a file, and sending the file to the disk subsystem.