Die rebuild operations for improved access performance in a memory system

A method at a memory system, comprising:

• recovering, in accordance with a data recovery operation of the memory system and based at least in part on a die failure of at least one memory device of a plurality of memory devices, data stored to one or more first block stripes associated with the at least one memory device, wherein each first block stripe of the one or more first block stripes comprises the data and parity data for recovery of the data after the die failure;
• transferring, in accordance with a fold rate, the recovered data from the one or more first block stripes to one or more second block stripes within one or more second memory devices of the plurality of memory devices of the memory system, wherein the fold rate comprises a rate at which the data is recovered and transferred from the one or more first block stripes to the one or more second block stripes during a first duration, and wherein the fold rate is based at least in part on an amount of valid data included in the memory system;
• and
• accessing, during a second duration that at least partially overlaps in time with the first duration, second data stored in the plurality of memory devices of the memory system.

A non-transitory computer-readable medium storing code, the code comprising instructions executable by one or more processors to:

• recover, in accordance with a data recovery operation of a memory system and based at least in part on a die failure of at least one memory device of a plurality of memory devices, data stored to one or more first block stripes associated with the at least one memory device, wherein each first block stripe of the one or more first block stripes comprises the data and parity data for recovery of the data after the die failure;
• transfer, in accordance with a fold rate, the recovered data from the one or more first block stripes to one or more second block stripes within one or more second memory devices of the plurality of memory devices of the memory system, wherein the fold rate comprises a rate at which the data is recovered and transferred from the one or more first block stripes to the one or more second block stripes during a first duration, and wherein the fold rate is based at least in part on an amount of valid data included in the memory system;
• and
• access, during a second duration that at least partially overlaps in time with the first duration, second data stored in the plurality of memory devices of the memory system.