Patent ID: 11922018
Assignee: HITACHI, LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 10:
11. The storage system according to claim 1, wherein
the write processing is performed when the processor receives a write request,
the write request is a request for writing of the write target multidimensional dataset and is a request designating a scale and addresses for each of the data dimensions of the multidimensional dataset, and
the write processing includes:
for each of one or more scales smaller than a largest scale among a plurality of scales, down-sampling the write target multidimensional dataset for the scale;
for the scale designated by the write request, writing an encoded dataset, which is data obtained by subjecting, to encoding processing, a feature value map obtained for the scale concerning the write target multidimensional dataset and entropy calculated by the entropy estimator corresponding to the scale based on the feature value map; and
generating logical-physical information representing correlation of the scale and the addresses for each of the data dimensions designated by the write request and a physical address of a storage area at a write destination of the encoded dataset.