Internal copy-back with read-verify

A method for read-verify of a copy-back in flash memory, comprising:

• selecting, via a controller of a flash memory device, a first single level cell (SLC) page of a plurality of SLC pages on the flash memory device to transfer to a triple level cell (TLC) page;
• read-verifying, via the controller in conjunction with an error correcting code (ECC) decoder, the first SLC page, read-verifying the first SLC page comprising:
• reading the first SLC page to an internal page buffer;
• decoding the first SLC page read into the internal page buffer;
• determining a number of errors contained in the first SLC page based at least in part on the decoding;
• and
• verifying whether the number of errors contained in the first SLC page satisfies an error threshold;
• and
• transferring, via the controller, the first SLC page to the TLC page according to a result of read-verifying the first SLC page.

A computing device configured for read-verify of a copy-back in flash memory, comprising:

• a processor;
• memory in electronic communication with the processor, the memory stores computer executable instructions that when executed by the processor cause the processor to perform the steps of:
• selecting a first single level cell (SLC) page of a plurality of SLC pages on a flash memory device to transfer to a triple level cell (TLC) page;
• read-verifying the first SLC page, read-verifying the first SLC page comprising:
• reading the first SLC page to an internal page buffer;
• decoding the first SLC page read into the internal page buffer;
• determining a number of errors contained in the first SLC page based at least in part on the decoding;
• and
• verifying whether the number of errors contained in the first SLC page satisfies an error threshold;
• and
• transferring the first SLC page to the TLC page according to a result of read-verifying the first SLC page.