【摘要】 由于传统RAID技术自身的局限性,导致其难以在更高的可靠性、I/O性能以及存储空间利用率之间取得良好的平衡。RS-RAID(Reed Solomon RAID)能够提供更高的可靠性,并且具有较高的存储空间利用率,但仍存在I/O性能低和数据恢复时间长的重要问题。基于Intel ISA-L的RS-RAID通过使用Intel ISA-L库加速RS码的计算速度,提高了RS-RAID的I/O性能;通过使用有效数据bitmap记录磁盘中实际需要恢复的数据,减少了RS-RAID在数据恢复过程中需要恢复的数据量,从而降低了RS-RAID的数据恢复时间。更多还原

【Abstract】 Due to the limitation of traditional RAID technology, traditional RAID can no longer meet the stringent requirements of storage. RS-RAID(Reed Solomon RAID)can ensure a higher reliability and space utilization. But poor I/O and recovery performance still exist. A RS-RAID, which accelerates the calculation speed by using Intel ISA-L(Intelligent Storage Acceleration Library)and reduces the time of data recovery by using valid data bitmap, which makes RS-RAID recover the valid data only, can solve these problems. With these steps, RAID system becomes more reliable and more efficient.更多还原