or XOR - A logical combination of two true or false conditions. If both conditions are false or both conditions are true the result is false; if either condition is true and the other is false the result is true. See below. condition 1 condition 2 result false false false false true true true false true true true false
A process based on a mathematical algorithm that is used by RAID levels 2, 3, 4, and 5 to compare computer data (binary 0s and 1s) created by a write request or by a read request during a drive failure. The result of the XOR process is parity information that will be stored along with data for real-time recovery in the event of a disk failure.
A process based on a mathematical algorithm that is used by RAID levels 2-5 to compare data created by a read request during a drive failure or by a write request.