System, device and method for storage device assisted low-bandwidth data repair

A system comprising:

• a host device configured to:
• store data, as a plurality of chunks, amongst a distributed storage system,
• detect when at least one chunk is associated with an error, and
• in response to the error, reconstruct, via a data regeneration technique, the chunk associated with the error based, at least in part, upon the plurality of chunks of the data;
• and
• the distributed storage system comprising:
• a plurality of storage devices, wherein each storage device is configured to store at least a respective chunk of the data,
• wherein the plurality of storage devices includes at least one regeneration-code-aware (RCA) storage device, wherein each RCA storage device is configured to internally calculate at least one type of data regeneration code.

A system comprising:

• a host device configured to:
• store data, in a plurality of chunks, amongst a storage system,
• detect when at least one chunk is associated with an error, and
• in response to the error, correct, via a data regeneration technique, the error based, at least in part, upon the plurality of chunks of the data;
• and
• the storage system comprising:
• a plurality of storage devices, wherein each storage device is configured to store at least a respective chunk of the data,
• wherein the plurality of storage devices includes at least one regeneration-code-aware (RCA) storage device, wherein each RCA storage device is configured to internally calculate at least one type of data regeneration code, and wherein the RCA storage device comprises:
• a memory configured to store data in chunks, wherein each chunk comprises data blocks,
• a processor configured to compute, when requested by the host device, a data regeneration code based upon a selected number of data blocks,
• a code memory configured to store a plurality of sets of instructions, wherein each set of instructions generates a different data regeneration code, and
• an external interface configured to transmit the data regeneration code to the host device.