NAND Flash Solid State Disks

 

Page 5 of 20

 

 

 ECC Technologies, Inc.

Phil White 952-935-2885

phil.white@ecctek.com

1.   Executive Summary

High cost and limited lifespans of NAND Flash chips have limited sales of NAND Flash

Solid State Disks. ECC Tek s two dimensional Reed-Solomon error-correction system

shown in Figure 1 solves these problems.

 

PRS Encoder

RS

E1

RS

E2

RS

E3

RS

EN

PRS Decoder

RS

Encoders

RS

D1

RS

D2

RS

D3

RS

DN

RS

Decoders

F1

F2

F3

FN

Banks of

Flash Chips

SSD Interface Logic

SSD Interface Logic

SSD Input

SSD Output

 

 

Figure 1 Parallel-transfer, Fault-tolerant SSD (pSSD)

 

2D arrays as shown in Figure 2 are written and read. The e s in Figure 2 represent

errors. Column 3 shows errors from a failed Flash chip.