NVMe-oF-R, a resilient disaggregated distributed storage architecture for fast recovery. NVMe-oF-R comprises three techniques: (1) NVMe-oF adapter, which detects recoverable failure events and orchestrates relocation; (2) DCRUSH, a data placement strategy that considers the NVMe-oF based disaggregation architecture; and (3) Relocater, which efficiently relocates failed compute resources and fixes stragglers that arise after recovery. We implement NVMe-oF-R atop the storage orchestration layer in a CRUSH-based distributed storage system, Ceph. Our experimental results demonstrate that NVMe-oF-R can eliminate unnecessary recovery traffic and reduce recovery time by more than 50% .">

NVMe-oF-R: Fast Recovery Design on Disaggregated Distributed Storage System (original) (raw)

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