Unverified50% confidenceDecision RuleTime unknown

叠瓦式(SMR)硬盘不适合作为NAS组RAID或频繁写入盘，随机写入时会因重叠磁道重写导致性能雪崩；NAS和存储密集场景必须选垂直式(CMR)硬盘

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50%

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Long-term

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机械硬盘category

Related Claims

UnverifiedNAS/RAID阵列硬盘应选CMR（传统磁记录）盘而非SMR（叠瓦式），SMR盘在RAID重建或大量随机写入时性能会骤降甚至导致ZFS/mdadm重建超时踢盘，西数WD Red（非Plus/Pro）曾因隐瞒SMR引发数据风险87% similar

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