Abstract: Data replication is described. An example method includes determining an aging degree of a first-type storage disk in a source storage device and determining a transmission time length for replicating target data from a second-type storage disk in the source storage device to a destination storage device, wherein the target data is stored in the second-type storage disk in the source storage device. Based on the transmission time length and the aging degree, it can be determined to migrate the target data from the second-type storage disk to the first-type storage disk, and, accordingly, the target data can be replicated from the first-type storage disk in the source storage device to the destination storage device. The data replication of the described technology can significantly improve data replication efficiency, and reduce the possibility of data loss, thereby significantly improving the performance of a storage system.

Abstract: For concurrent data transmission, an example method includes acquiring a processor utilization rate related to transmission of historical data packet(s) and a bandwidth utilization rate of a data link within a target time period. A time consumption for transmitting a target data packet, a splitting processing resource related to a splitting operation, and a packaging processing resource related to a packaging operation are determined. Based on the processor utilization rate, the bandwidth utilization rate, the time consumption, the splitting processing resource, and the packaging processing resource, a split number is determined for the target data packet to concurrently transmit the target data packet. In this way, a data transmission speed can be improved, time consumed for transmitting the target data packet can be reduced, and meanwhile, it can also alleviate problems such as excessive processing resource consumption and overloaded operation of the processor caused by concurrent transmission.

Abstract: Techniques involve: receiving an input/output request for data stored in a second storage means of a storage system; determining a use frequency of the data; moving the data from the second storage means into a first storage means in the storage system if it is determined that the use frequency is higher than a threshold frequency and the input/output request is a read request, an input/output speed of the first storage means being higher than that of the second storage means; and writing, if it is determined that the use frequency is higher than the threshold frequency and the input/output request is a write request that includes update data, the update data as the data into the first storage means. Accordingly, the storage performance can be improved without affecting the input/output traffic, which not only can reduce the operating cost, but also can improve user experience.

Abstract: Techniques involve: receiving an input/output request for data stored in a second storage means of a storage system; determining a use frequency of the data; moving the data from the second storage means into a first storage means in the storage system if it is determined that the use frequency is higher than a threshold frequency and the input/output request is a read request, an input/output speed of the first storage means being higher than that of the second storage means; and writing, if it is determined that the use frequency is higher than the threshold frequency and the input/output request is a write request that includes update data, the update data as the data into the first storage means. Accordingly, the storage performance can be improved without affecting the input/output traffic, which not only can reduce the operating cost, but also can improve user experience.

Abstract: This present disclosure provides a sensing cable of parallel spiral transmission line structure for distributed sensing and measuring of rock-soil mass deformation. A circular cross-section of a silicone strip is tightly wounded by two mutually-insulated wires. The two mutually-insulated wires form the spiral cable. The two mutually-insulated wires are wrapped around and covered by a silicone shroud. They constitute a sensing cable. A termination matching impedance is connected to one end of each of the two mutually-insulated wires. A time domain reflectometry measurement instrument is connected to the other end of the two mutually-insulated wires. The present disclosure implements a distributed positioning and measurement of rock-soil mass deformation.

Abstract: This present disclosure provides a sensing cable of parallel spiral transmission line structure for distributed sensing and measuring of rock-soil mass deformation. A circular cross-section of a silicone strip is tightly wounded by two mutually-insulated wires. The two mutually-insulated wires form the spiral cable. The two mutually-insulated wires are wrapped around and covered by a silicone shroud. They constitute a sensing cable. A termination matching impedance is connected to one end of each of the two mutually-insulated wires. A time domain reflectometry measurement instrument is connected to the other end of the two mutually-insulated wires. The present disclosure implements a distributed positioning and measurement of rock-soil mass deformation.