Data processing method and storage device

A storage device, comprising:

• a hard disk;
• and
• at least one processor configured to
• obtain data,
• deduplicate the data based on a first granularity,
• compress the deduplicated data based on a second granularity, wherein a size of the second granularity is greater than a size of the first granularity, and
• store data obtained after the deduplication and the compression in the hard disk;
• wherein the storage device stores metadata managed based on a metadata management granularity, a size of the metadata management granularity is less than or equal to a specified largest value and is greater than or equal to a specified smallest value, and the size of the first granularity is equal to an integer multiple of the smallest value.

A non-transitory computer-readable medium having instructions stored therein, which when executed by a processor, cause the processor to perform operations of processing data, the operations comprising:

• obtaining data;
• deduplicating the data based on a first granularity;
• compressing the deduplicated data based on a second granularity, wherein a size of the second granularity is greater than a size of the first granularity;
• and
• storing data obtained after the deduplication and the compression in a hard disk of a storage device;
• wherein the processor stores metadata managed based on a metadata management granularity, a size of the metadata management granularity is less than or equal to a specified largest value and is greater than or equal to a specified smallest value, and the size of the first granularity is equal to an integer multiple of the smallest value.