Parallel Parity Scheme for Reliable Solid-State Disks

Recently, solid-state disks (SSDs) have been extensively applied in many fields. However, with increasing storage density in SSDs, a liability problem has emerged as a significant restriction. A parallel parity scheme is proposed in this paper. This scheme employs a mapping table based on a physical block address and a partial delayed parity update. Experimental results demonstrate the proposed scheme not only improves the reliability of SSDs, but also enhances their performance.