Hangzhou Hikvision System Technology Co., Ltd.

Hangzhou Hikvision Digital Technology Co., Ltd.

Hangzhou Hikivision System Technology Co., Ltd.

Weiqiang Xia

Wei Wang

Qiqian Lin

Weichun Wang

Disclosed is a data reconstruction method and apparatus, and an electronic device, and a storage medium. The method comprises: obtaining attribute information for a plurality of to-be-reconstructed data items; wherein the attribute information of any of the to-be-reconstructed data items is information recorded before the to-be-reconstructed data item is lost; determining, according to the attribute information for the plurality of to-be-reconstructed data items, a reconstruction order for the plurality of to-be-reconstructed data items in a preset target sorting manner; wherein, the target sorting manner relates to the attribute information, and in the target sorting manner, a data item of greater importance has a higher priority in reconstruction. Recovery rate of important data is increased.

Data reconstruction method, apparatus, electronic device, and storage medium

Disclosed are a storage system, and a method and an apparatus for allocating storage resources. In the storage system, a target management node allocates a target storage node to a monitoring device according to a first storage request; the target storage node allocates a target storage volume to the monitoring device according to a second storage request, allocates a target block group from the target storage volume to the monitoring device, acquires monitoring data in the form of a data stream from the monitoring device, and stores the monitoring data in the target block group. The storage system may select a management node from a management cluster to allocate a storage node to a monitoring device, and the storage node may allocate a storage position to the monitoring device. The storage position that is allocated to monitoring data can be determined by the management node and the storage node hierarchically.

Storage system, and method and apparatus for allocating storage resources

Embodiments of the present application provide a method for storing video data in the cloud storage system, which includes: receiving to-be-stored video data; obtaining identification information of a storage object corresponding to the to-be-stored video data; determining the storage object corresponding to the to-be-stored video data, and a first data security level and a second data security level corresponding to the storage object based on the identification information; wherein, the first data security level is higher than the second data security level; for each frame in the to-be-stored video data, determining whether the frame is a key frame; and storing the frame into the determined storage object based on the first data security level when the frame is the key frame and storing the frame into the determined storage object based on the second data security level when the frame is not the key frame. With the method for storing video data, the key frame in the video data is protected and the risk of losing video data is reduced.

Video data storage method and device in cloud storage system

A method and device for improving data storage security, related to the technical field of cloud storage is disclosed. The method includes: detecting access counts of user data sets in a cloud storage resource pool, where the user data sets in the cloud storage resource pool are data obtained by encoding with an erasure coding algorithm of a first security level; determining a first user data set whose access count in the cloud storage resource pool meets a preset condition; obtaining a second security level according to attribute information of the cloud storage resource pool, wherein the attribute information includes the first security level and an increment for security step; and re-encoding the first user data set with an erasure coding algorithm of the second security level to obtain re-encoded first user data sets.

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Hangzhou, China

Weiqiang Xia