A separate noise comparison uses SSDs, WD Red Plus and Ultrastar HC330 across boot, idle and heavy access. Recordings are amplified and contain room noise, so use it to understand the character of the sound rather than as a calibrated dBA ranking.
Test setup, measurements & limitations
QNAP HS-264 NAS Noise Tests - How Silent is it?
Tested: HS-264 with pairs of Kingston DC500 SATA SSDs, WD Red Plus 4TB HDDs, and WD Ultrastar HC330 10TB HDDs. Captured active-use frames identify DC500, Red Plus 5400RPM/128MB cache, and HC330 7200RPM/256MB cache. Exact drive MPNs, SSD capacity, RAID and firmware not disclosed.
Applies to: Independent acoustics comparison on the HS-264; source methods and media identities verified, but no calibrated aggregate dBA result is adopted.
- Compares boot, idle and heavy 4K-random access across SSD, NAS HDD and enterprise HDD pairs. A fanless enclosure does not eliminate the installed HDDs’ mechanical noise.Source location: Methods2:00–3:12; chapters6:22–15:22
- Every recording is amplified by 50% to expose drive sounds; the office includes wildlife, traffic and other background noise. The displayed sound monitor has a 0.5-second delay.Source location: automatic transcript3:51–5:28; on-screen notes during active tests
Limits to keep in mind
- Full available automatic transcript and active-use configuration frames were checked; original audio was not independently evaluated.
- The displayed phone sound-level app lacks documented calibration, weighting and distance; isolated readings and cumulative AVG/MAX are not comparable lab averages.
- The author’s generic claim that enterprise HDDs are all helium-filled is not adopted.
- Amazon affiliate links disclosed; gift/payment status not established.