Storage system, storage management apparatus, storage device, hybrid storage apparatus, and storage management method

A method for use by a storage device, wherein the storage device comprises a plurality of physical blocks each storing one or more data pages, wherein each data page is allocated to a logical block, data pages of different data categories are allocated to different logical blocks, and each logical block is allocated with data pages of a same category, the method comprising:

• receiving an erase instruction from a managing device, wherein the erase instruction carries information about a selected logical block, and the erase instruction instructs the storage device to erase one or more physical blocks corresponding to the selected logical block;
• identifying the one or more physical blocks corresponding to the selected logical block according to a correspondence between physical blocks and logical blocks in the storage device;
• and
• erasing the identified physical blocks.

A storage managing device in a data storage system, comprising:

• a processor, a network interface, and a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for execution by the processor,
• wherein the programming instructions, when executed by the processor, cause the storage managing device to:
• receive a data write request, wherein the data write request comprises one or more data pages to be written to a storage device of the storage system, and wherein the storage device comprises a plurality of physical blocks;
• determine a data category for each data page comprised in the data write request;
• allocate each data page to a logical block, wherein data pages of different data categories are allocated to different logical blocks, and each logical block is allocated with data pages of a same category;
• and
• send a data write instruction to the storage device;
• wherein the data write instruction carries the data pages and information of the logical blocks the data pages are allocated to, and the data write instruction instructs the storage device to write the data pages to one or more physical blocks of the storage device that correspond to the logical blocks, and
• wherein data pages allocated to a same logical block are written to one or more physical blocks that correspond to the logical block, and data pages written to each physical block are allocated to a same logical block.

A storage device in a data storage system, comprising:

• a processor, a plurality of physical clocks, and a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for execution by the processor,
• wherein the programming instructions, when executed by the processor, cause the storage device to:
• receive, from a storage managing device, a data write instruction, wherein the data write instruction carries one or more data pages, the data pages are allocated to one or more logical blocks, data pages of different data categories are allocated to different logical blocks, and each logical block is allocated with data pages of a same data category;
• and
• write, according to the data write instruction, the data pages to one or more physical blocks corresponding to the one or more logical blocks, wherein data pages allocated to a same logical block are written to one or more physical blocks corresponding to the logical block, and data pages written to each physical block are allocated to a same logical block.

A computer program product, comprising a non-transitory computer-readable medium storing computer executable programming instructions, wherein when the programming instructions are executed by a processor of a storage managing device in a storage system, causes the storage managing device to:

• receive a data write request, wherein the data write request comprises one or more data pages to be written to a storage device of the storage system, and wherein the storage device comprises a plurality of physical blocks;
• determine a data category for each data page comprised in the data write request;
• allocate each data page to a logical block, wherein data pages of different data categories are allocated to different logical blocks, and each logical block is allocated with data pages of a same category;
• and
• send a data write instruction to the storage device,
• wherein the data write instruction carries the data pages and information of the logical blocks the data pages are allocated to, and the data write instruction instructs the storage device to write the data pages to one or more physical blocks of the storage device that correspond to the logical blocks, and
• wherein data pages allocated to a same logical block are written to one or more physical blocks that correspond to the logical block, and data pages written to each physical block are allocated to a same logical block.