Restoration of warm and cold data blocks based on storage time by batches

A non-transitory computer readable medium storing computer code comprising instructions that, when executed by at least one processor, cause the at least one processor to:

• receive one or more data restoration requests for restoring a plurality of data blocks;
• determine, based on metadata associated with the data blocks, a first subset of warm data blocks corresponding to warm-tier data and a second subset of cold data blocks corresponding to cold-tier data;
• retrieve the warm data blocks in the first subset;
• restore the warm data blocks in the first subset;
• group the cold data blocks based in part on storage times of the cold data blocks to generate a plurality of cold-tier data retrieval requests;
• retrieve the cold data blocks by batches, each batch corresponding to one of the cold-tier data retrieval requests;
• and
• restore the cold data blocks in the second subset.

A system comprising:

• a data management server comprising a processor and memory, the memory configured to store computer code comprising instructions, wherein the instructions, when executed by the processor, cause the processor to:
• receive one or more data restoration requests for restoring a plurality of data blocks;
• determine, based on metadata associated with the data blocks, a first subset of warm data blocks corresponding to warm-tier data and a second subset of cold data blocks corresponding to cold-tier data;
• retrieve the warm data blocks in the first subset;
• restore the warm data blocks in the first subset;
• group the cold data blocks based in part on storage times of the cold data blocks to generate a plurality of cold-tier data retrieval requests;
• retrieve the cold data blocks by batches, each batch corresponding to one of the cold-tier data retrieval requests;
• and
• restore the cold data blocks in the second subset.