Multilevel RAID Disk Arrays
نویسنده
چکیده
Bricks or Storage Nodes SNs holding a dozen or more disks are cost-effective building blocks for ultrareliable storage. We describe the Multilevel RAID MRAID paradigm for protecting both SNs and their disks. Each SN is a k-disk-failure-tolerant kDFT array, while replication or -node failure tolerance NFTs paradigm is applied at the SN level. We provide the data layout for RAID5/5 and RAID6/5 MRAIDs and give examples of updating data and recovering lost data. The former requires storage transactions to ensure the atomicity of storage updates. In Conclusions we outline areas for further research.
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تاریخ انتشار 2006