MSFRD: Mutation Similarity based SSD Failure Rating and Diagnosis for Complex and Volatile Production Environments

SSD failures have an increasing impact on storage reliability and performance in data centers. Some manufacturers have customized fine-grained Telemetry attributes to analyze and identify SSD failures. Based on Telemetry data, this paper proposes the mutation similarity based failure rating and diagnosis (MSFRD) scheme to predict failures in dynamic environment of data centers and improve failure handling efficiency. MSFRD dynamically detects the internal mutations of SSDs in real time and measures their similarity to the mutations of historical failed SSDs and healthy SSDs for failure prediction and early rating. Based on the rating, unavailable SSDs with serious failures are handled immediately, while available SSDs with less serious failures will be continuously tracked and diagnosed. The MSFRD is evaluated on real Telemetry datasets collected from large-scale SSDs in data centers. Compared with the existing schemes, MSFRD improves precision by 23.8% and recall by 38.9% on average for failure prediction. The results also show the effectiveness of MSFRD on failure rating and progressive diagnosis.