Patent ID: 10678435

Abstract:
Techniques for performing data deduplication and compression in data storage systems. Data deduplication is performed in a deduplication domain on a segment-by-segment basis to obtain a plurality of deduplicated data segments. Deduplicated data segments are grouped together to form a plurality of compression groups. Data compression is performed on each compression group, and the compressed group is stored on spinning media. By performing data deduplication on a segment-by-segment basis, the size of each segment can be reduced to increase the effectiveness of data deduplication. By performing data compression on compression groups, the size of each compression domain can be increased to increase the effectiveness of data compression. By storing deduplicated data segments as a compressed group on the spinning media, a sequential nature of the segments can be preserved to reduce a seek time/rotational latency of the spinning media and a number of IOPS handled by the data storage system.