Redundant array of independent disks ( RAID) also uses an enhanced form of parity check protection. If an odd parity check was used, the transmission would look like this: 10100010. When an even parity checking is used, a parity bit with value 1 could be added to the data’s right side to make the number of 1s even - and the transmission would look like this: 10100011. This example has an odd number of 1s and and even number of 0s. Imagine a data transfer that looks like this: 1010001. Parity bits are optional and there are no rules for where a parity bit has to be placed, but conventionally, parity bits are added at the end of the data transfer. Parity checking, which was created to eliminate data communication errors, has an easy to understand working mechanism.
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