Huawei Technologies Co., Limited

University of Science and Technology of China

Shenzhen Xiaozhai Technology Co., Ltd.

Zhipeng Li

Yi Chen

Yuangang Wang

Xiaomin Hu

Jing Qian

Ge Qiu

Daiyue Zhang

Chao Yu

Yinlong Xu

Guifu Li

This application discloses a data compression method and apparatus. The method includes: obtaining m data blocks in a data area of a readable and writable file system; compressing the m data blocks by using a preset compression algorithm, to sequentially obtain n compressed data blocks, where first capacities of the compressed data blocks are the same, and the first capacity represents a quantity of bytes of compressed data that can be included in the compressed data block; and establishing a first index of each of j data blocks corresponding to an icompressed data block in the n compressed data blocks, and recording a mapping relationship between first indexes and the j data blocks. The first index is used to identify a storage location, in a storage medium, of each data block included in the j data blocks, and attribute information included in each of the j data blocks.

Data compression method and apparatus

Accessory for virtual reality headset

A data migration method for a storage system after expansion and a storage system are provided. After an iexpansion is performed on the storage system, data migration is performed by using an auxiliary balanced incomplete block design. Because a quantity of tuples including any element in the auxiliary balanced incomplete block design is identical, and each migration unit includes an identical quantity of parity chunks, a data migration amount after the expansion is minimized. In this way, time required for data migration after the expansion is significantly reduced, and a delay in a response to a user request that is caused because a data migration operation needs to be performed after the expansion is also reduced.

Data migration method for a storage system after expansion and storage system

Growing community of inventors

Shenzhen, China

Zhipeng Li