Emc IP Holding Company LLC

Dow Global Technolgoies LLC

Beijing Didi Infinity Technology and Development Co., Ltd.

Dell Products Inc.

Huan Chen

Chen Gong

Shuo Lv

Ming Lei Zhang

Lester Zhang

Qi Song

Sheng Wang

Zhiqiang Li

Chao Han

Leihu Zhang

Leon Zhang

Dapeng Chi

Henry Hao Fang

Yongli Wang

Junping Zhao

Lei Liu

Yi Zhang

Yu Chen

Hongyu Chen

Lei Gao

Shaoguang Feng

Wei Cui

Li Li Ma

Jian Qiang Liu

Cheng Shen

Ming Zhang

Dong Yun

Hao Fang

Peng Yu

Hua Ren

Xiangyang Tai

Chao Zhang

Qiaosheng Zhou

Yongchun Chen

Wilson Guoyu Hu

Ying Tian

Beilei Wang

Zhe He

Xuemei Zhai

Jian Liu

Joe Jian Liu

Wenyang Liu

Qingwei Meng

Guoyu Hu

Shihao Qin

Congyue Gu

Brown Zan Liu

Wanji Zheng

Yanbin Fan

Jianqing Jiao

Zetian Cai

Juan Hu

Ran Chen

Techniques perform data detection. Such techniques involve determining, based on a start sector address of a first mapping range composed of sectors in a physical address space, a first mapping region where the start sector address is located, the first mapping range corresponding to a first virtual block. Such techniques further involve comparing the first mapping region with a second mapping region, a second mapping range corresponding to a second virtual block different from the first virtual block at least partially corresponding to the second mapping region. Such techniques further involve comparing the first mapping range with the second mapping range in response to the first mapping region being the same as the second mapping region. Such techniques further involve determining that the first mapping range overlaps the second mapping range in response to that the first mapping range and the second mapping range have a common range.

Method, electronic device, and computer program product for data detection

A polyurethane composition is provided. The polyurethane composition comprises (A) a polyurethane-prepolymer prepared by reacting at least one polyisocyanate compound with a first polyol component; and (B) a second polyol component; wherein at least one of the first polyol component and the second polyol component comprises an ester/ether random copolymer polyol synthesized by reacting a starting material polyether polyol with at least one monomeric polyhydric alcohol and at least one monomeric multifunctional carboxylic acid or anhydride thereof. The polyurethane foam prepared by using the polyurethane composition can achieve inhibited internal heat buildup, high thermal stability, superior tear strength, enhanced abrasion resistance and good hydrolysis resistance. A polyurethane product prepared with said foam, a method for preparing the polyurethane foam and a method for improving the performance property of the polyurethane foam are also provided.

Polyurethane compositions, products prepared with same and preparation methods thereof

Techniques for data storage involve selecting a target Redundant Array of Independent Disks (RAID) from a plurality of RAIDs in a storage resource pool. Such techniques further involve determining a local neighbor matrix of the target RAID based on the target RAID, wherein the local neighbor matrix indicates distribution of a plurality of storage extents of a plurality of RAID extents of the target RAID on the storage resource pool. Such techniques further involve performing a resource reallocating operation on the storage resource pool based on the local neighbor matrix. Accordingly, a local neighbor matrix can be calculated at the granularity of an individual RAID, and the local neighbor matrix can be applied to balance a local neighboring relationship, so as to ensure overall balance of the neighbor matrix of the entire storage resource pool and improve IO performance.

Method, electronic device, and computer program product for data storage

A two-component adhesive composition is provided. The two-component adhesive composition comprises an isocyanate component, an isocyanate-reactive component and an polyether amine-epoxy silane adduct, and can achieve superior adhesion strength between the adhesive and a substrate like metal alloy substrate. A laminated article prepared with said composition, a method for preparing the article and the use of the polyether amine-epoxy silane adduct as adhesion promoter in a two-component polyurethane adhesive composition are also provided.

Two-component adhesive compositions, articles prepared with same and preparation methods thereof

A synthetic leather article comprising a top coating derived from an internally emulsified PUD, a barrier layer derived from an externally emulsified PUD and a 2K non-solvent PU foam layer is provided. The leather article exhibits high delamination resistance while retaining superior mechanical properties and appearance comparable with those derived from the organic solvent-based PU. A method for preparing the synthetic leather article is also provided.

Synthetic leather article and method for preparing same

A polyurethane composition reaction mixture including: (a) at least one organic isocyanate; and (b) at least one butylene oxide-based hydrophobic polyol; a process for making the above polyurethane composition; a polyurethane composite article composition, a process for making the above polyurethane composite article composition; and a process for making a composite article from the above polyurethane composite article composition.

Polyol composition

Embodiments of the present disclosure provide a method, a device, and a computer program product for storage management. The method for storage management includes: acquiring a reading request for a first target file, the reading request including a first target file name of the first target file. The method further includes: determining a first target characteristic value for the first target file based on the first target file name. The method further includes: determining first target index information for the first target file from a mapping from characteristic values to index information based on the first target characteristic value, wherein the first target index information is used to index the first target file from a merged file. The method further includes: reading the first target file included in the merged file from a storage system based on the first target index information. As a result, access to a large number of small files can be converted into access to large files, thereby improving the overall file access efficiency.

Method, device, and computer program product for storage management

Techniques manage extents in a storage system having storage devices supporting a redundant storage strategy. A reserved area of the storage system is generated based on a set of first-type reserved extents respectively located in the storage devices, and the set of first-type reserved extents supports a reconstruction operation for a failed storage device when the failed storage device appears in the storage devices. A data area is generated based on a set of data extents respectively located outside the reserved area in the storage devices, and the data area provides data storage for a user. Here, a reserved extent size of the set of first-type reserved extents is smaller than a data extent size of data extents in the data area of the set of data extents. The quantity of extents can be reduced, thereby reducing overhead of storage and computing resources involved by associated metadata.

Method, device and computer program product for managing extent in storage system

Techniques for tracking a lock involve creating an event comprising object information, and extracting the object information in the event through a thread in a thread pool. Such techniques further involve recording lock information comprising the object information according to a determination that the thread executes a lock operation. Such a lock tracking technique for a threading model can record lock information of an object when a thread performs locking and unlocking, and realize tracking of a lock operation and generating a lock analysis report.

Method, device and computer program product for tracking lock

The present disclosure relates to a system, method and non-transitory computer readable medium. The system includes at least one computer-readable storage medium including a set of instructions and at least one processor in communication with the at least one computer-readable storage medium. When executing the set of instructions, the at least one processor is directed to: receive a triggering event in the absence of input from a user terminal associated with a user; obtain one or more candidate destinations based on the triggering event; obtain a trained ranking model; determine a ranking result of the one or more candidate destinations based on the trained ranking model; and transmit the ranking result to the user terminal in response to the triggering event.

Systems and methods for providing information for online to offline service

Techniques for storage management involve: in accordance with a determination that an input/output (I/O) request of a storage system is received, determining a target storage device to which the I/O request is directed. The techniques further involve: in accordance with a determination that the target storage device is a storage device of a first type, processing the I/O request by accessing a memory of the storage system. The techniques further involve: in accordance with a determination that the target storage device is a storage device of a second type different from the first type, processing the I/O request without accessing the memory, the storage device of the second type having an access speed higher than that of the storage device of the first type. Accordingly, such techniques can improve performance of a storage system.

Optimized access to high-speed storage device

Techniques for managing threads involve acquiring respective runtime addresses and call information of a plurality of lock objects in a plurality of threads, and determining, from the plurality of lock objects, a first group of lock objects associated with first call information and a second group of lock objects associated with second call information different from the first call information. The techniques further involve providing an indication that a deadlock exists in the plurality of threads if it is determined that a first group of runtime addresses of the first group of lock objects overlaps with a second group of runtime addresses of the second group of lock objects. Accordingly, potential deadlocks in a plurality of threads can be analyzed, thereby avoiding the inability of the threads to proceed normally due to the deadlocks.

Method, device and computer program product for thread management

Embodiments of the present disclosure provide a method and device for deduplication. Specifically, the method may comprise obtaining a property of a file stream, the property of a file stream including a file type or a magic number identifying a format of a protocol or a file. The method further includes in response to receiving an I/O request for a data block of the file stream, assigning a deduplication level to the I/O request based on the property of the file stream. Moreover, the method further includes deduplicating the data block of the file stream based on the deduplication level assigned to the I/O request. In addition, a corresponding device and computer program product are provided.

Method and device for deduplication

A data compression technique involves: selecting, from a data block, a plurality of bit strings as sample data. The technique further involves: determining a set of characters included in the sample data. Each character in the set of characters is represented by at least one bit string among the plurality of bit strings. The technique further involves: compressing the data block if statistical characteristics of the set of characters match predetermined statistical characteristics. Accordingly, incompressible data can be filtered out efficiently and accurately, so as to utilize computing resources more efficiently.

Data compression method, electronic device and computer program product

Techniques involve managing a storage system. A target storage device is selected from multiple storage devices associated with the storage system in response to respective wear degrees of the multiple storage devices being higher than a first predetermined threshold. Regarding multiple extents in the multiple storage devices, respective access loads of the multiple extents are determined. A source extent is selected from multiple extents residing on storage devices other than the target storage device, on the basis of the respective access loads of the multiple extents. Data in the source extent are moved to the target storage device. Various storage devices in a resource pool may be prevented from reaching the end of life at close times, and further data loss may be avoided.

Method, apparatus, and computer program product for managing storage system

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Beijing, China

Huan Chen