Systems, methods, and devices for data recovery with spare storage device and fault resilient storage device

A system comprising:

• a controller;
• a first storage device;
• a second storage device;
• and
• a spare storage device;
• wherein the first storage device comprises a first circuit arranged to operate the first storage device in a fault resilient mode with at least partial read capability based on a fault condition of the first storage device;
• and
• wherein the controller comprises a second circuit arranged to:
• operate the first storage device and the second storage device as a redundant array;
• perform a build operation to build information from the first storage device on the spare storage device based on the fault condition of the first storage device;
• receive a read request for the first storage device;
• perform a determination of a build location of the spare storage device;
• perform a read operation, based on the read request, based on the build location, of requested information from the first storage device;
• and
• write, based on the read operation from the first storage device, the requested information to the spare storage device.

A storage array controller comprising:

• a first circuit arranged to:
• operate a first storage device, a second storage device, and a third storage device as a redundant array of independent storage devices (RAID) with parity, wherein the first storage device comprises a second circuit arranged to operate the first storage device in a fault resilient mode with at least partial read capability based on a fault condition of the first storage device;
• perform a build operation to build information from the first storage device based on the fault condition of the first storage device by copying information from the first storage device to a spare storage device;
• receive a read request for the first storage device;
• perform a determination of a build location of the spare storage device;
• perform a read operation, based on the read request, based on the build location, of requested information from the first storage device;
• and
• write, based on the read operation from the first storage device, the requested information to the spare storage device.