Parity bit

A bit or series of bits appended to a character or block of characters to ensure that the information received is the same as the information that was sent. Parity is used for error detection. Bit(s) used to determine whether a block of data has been altered.
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The basic unit of storage for many computers; typically, one configuration consists of 8 bits used to represent data plus a parity bit for checking the accuracy of representation.
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Usually, the four rightmost bits in a byte.
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Mirror image backups (also referred to as bitstream backups) involve the backup of all areas of a computer hard disk drive or another type of storage media (e. g. , Zip disks, floppy disks, Jazz disks, etc. ). Such mirror image backups exactly replicate all sectors on a given storage device. Thus, all files and ambient data storage areas are copied. Such backups are sometimes referred to as “evidencegrade” backups and they differ substantially from standard file backups and network server backups. The making of a mirror image backup is simple in theory, but the accuracy of the backup must meet evidence standards. Accuracy is essential and to guarantee accuracy, mirror image backup programs typically rely on mathematical CRC computations in the validation process. These mathematical validation processes compare the original source data with the restored data. When computer evidence is involved, accuracy is extremely important, and the making of a mirror image backup is typically described as the preservation of the “electronic crime scene. ”
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<p>Cloud data storage process that uses parity bits and encrypted chunks of data.</p>
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