NAS Drive Selection: PMR/SMR and Surveillance Drives, Demystified

2026年10月10日

Half of NAS horror stories start with the wrong drive.

Three key facts

PMR vs SMR: shingled (SMR) drives collapse on random writes and can fail RAID rebuilds — buy perpendicular (PMR) only;
Surveillance drives: cheap and 24/7-optimized, but poor at frequent small writes — great for footage, bad for system disks;
Enterprise drives: vibration protection and higher workload ratings; overkill for light home use, justified for heavy multi-user writes.

Decision tree

System/cache → SSD. Media library → 4 TB-class PMR surveillance drives, best value. Irreplaceable data → RAID 1 plus an offsite copy. Buy 1.5× current needs — drives only fill up.

Related products: nas-rk3588. Manuals, firmware and SDKs are in the Hugsun Documentation Center; contact us via the website for volume / ODM programs.

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