7.7 Enterprise-grade 6x fast read and 5x highly reliable SSD with TLC NAND-flash memory for big-data storage An enterprise-grade SSD with TLC (3b/cell) NAND Flash is presented with three techniques that achieve high speed and high reliability. Quick low-density parity-check (LDPC) reduces the read latency of 1Xnm TLC NAND Flash SSD by 83%. Dynamic VTH optimization and auto data recovery reduce the NAND Flash bit-error rate (BER) by 80% and 18%, respectively. These techniques can be implemented in the SSD controller without circuit overhead. No modification is required to the TLC NAND flash.