'On the fly' data error correctionExtremely high data transfer rates possibleThe higher the data transfer rate required, the better the ratio of data disks to ECC disks
Very high ratio of ECC disks to data disks with smaller word sizes - inefficientEntry level cost very high - requires very high transfer rate requirement to justifyNo commercial implementations existEach bit of data word is written to a data disk drive (4 in this example: 0 to 3). Each data word has its Hamming Code ECC word recorded on the ECC disks. On Read, the ECC code verifies correct data or corrects single disk errors.
