Abstract: CRC checkout works as a kind of the most frequently used error-checking mechanism in iSCSI protocol and its different algorithms can have distinct effects on execution efficiency of CRC protocol.A fast parallel CRC algorithm was introduced based on the analysis of the low efficiency of traditional CRC algorithm.An improved parallel CRC algorithm was proposed based on the characteristics of iSCSI protocol.At last,the testing results show that the improved CRC algorithm can reduce the occupation rate of CPU i...