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The data layout of traditional RAID can't adapt to the heterogeneous RAID that consists of disks with different capacity and/or performance, because it will cause waste of disk storage space and decrease of the integrated disks' bandwidth. Based on the concept of ldquostripe patternrdquo, we bring out the concept of ldquopseudo stripe patternrdquo and propose to place data in heterogeneous RAID with...
The system architecture cannot adapt to the dynamic change of system disks, which is a general problem in traditional storage system. While EvoRAID system, a dynamic storage system we proposed, applies DAA algorithm to cope with three kinds of storage system disk changes—homogeneous disk adding, heterogeneous disk adding, and heterogeneous disk replacement. Simulation results demonstrate that without...
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