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Han Jang

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Book Open access Sep 2026

4Z-SSD: A Semantic-Aware Four-Zone SSD Architecture for Balancing Write Amplification and Flash-Level Parallelism

Modern SSDs face a fundamental trade-off between reducing write amplification and maximizing flash-level parallelism. Conventional FTL schemes improve resource utilization through aggressive data distribution, but incur higher garbage collection overhead by intermixing data with different update behaviors. In contrast,...

Dongjun Lee, Han Jang, Youngbin Jin et al. · 0 citations
Book Open access Sep 2026

BASIC-Prefetcher: Bin-based Address and Size-Informed Caching for AI-Driven SSD Workloads

The BASIC Prefetcher is proposed, which recovers application-level I/O patterns by classifying requests into size-based bins and modeling temporal bin transitions with a lightweight Markov-chain framework and achieves up to 89% prediction accuracy on sequential workloads and 70% on highly random workloads, including AI...

Han Jang, Dongjun Lee, Youngbin Jin et al. · 0 citations

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