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HS-RAID2: Optimizing Small Write Performance in HS-RAID
HS-RAID (Hybrid Semi-RAID), a power-aware RAID, saves energy by grouping disks in the array. All of the write operations in HSRAID are small write which degrade the storage system's performance severely. In this paper, we propose a redundancy algorithm, data incremental parity algorithm (DIP), which employs HS-RAID to minimize the write penalty and improves the performance and reliability of the storage systems. The experimental results show that HS-RAID2 (HS-RAID with DIP) is faster and has higher reliability than HS-RAID remarkably.
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