MP-RAID: Mirroring and parity protected disk array

作者：MAO Bo FENG Dan WU Su zhen Wuhan National Laboratory for Optoelectronics School of Computer Science; Technology Huazhong University of Science; Technology Wuhan P R China

来源：Journal of Shanghai University(English Edition), 2009, 13(06): 444-449.

DOI：10.1007/s11741-009-0605-2

• storage systems
• redundant array of inexpensive disk (RAID)
• reliability analysis
• mean time to data loss (MTTDL)

Redundant array of inexpensive disk (RAID)10 is known as the most reliable disk array architecture to tolerate up to half of total disk failures, but failure of two disks in the same mirror set still results in data loss. In this paper, we propose a new disk array architecture, mirroring and parity protected RAID (MP-RAID), which combines both mirroring and parity techniques to further improve reliability of disk arrays. The main idea behind MP-RAID is to protect the data by both mirroring and parity techniques: keep two copies of data in the same mirror set and update the parity block in the log disk within the same parity groups. Reliability analysis shows that the reliability of MP-RAID, in terms of mean time to data loss (MTTDL), is much better than RAID10 and RAID5.

• 出版日期2009-12-15
• 单位华中科技大学