US 2025/0094046 A1 · STORAGE SYSTEM

Abstract

A storage system includes a controller and one or more storage devices, and the controller can compress data in different compression units, and collectively compresses data of one or a plurality of consecutive addresses in each compression unit of the different compression units. The controller receives write data, determines whether read of data stored in the one or more storage devices is necessary for compression of the write data by a first compression unit, determines compression of the write data in the first compression unit when read is not necessary, and determines compression in the first compression unit or compression in a second compression unit smaller than the first compression unit based on a remaining endurance of rewriting of the one or more storage devices when read is necessary.

Claims12

Dependent claims

A storage system comprising:

a controller;
and
one or more storage devices, wherein
the controller can compress data in different compression units, and collectively compresses data of one or a plurality of consecutive addresses in each compression unit of the different compression units, and
the controller
receives write data,
determines whether read of data stored in the one or more storage devices is necessary for compression of the write data by a first compression unit,
determines compression of the write data in the first compression unit in a case where the read is not necessary, and
determines compression by the first compression unit or compression by a second compression unit smaller than the first compression unit based on a remaining endurance of rewriting of the one or more storage devices in a case where the read is necessary.

6 more elements

Dependencies are inferred from the claim text.

Storage system

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Storage system

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Abstract

Claims12