Quietest NAS hard drives
Noise is the spec people forget until the NAS is under a desk or in the living room. We rank current NAS drives by their published idle sound power (A-weighted, dB) - the figure that matters when the array sits idle most of the day. Lower is quieter; seek noise breaks ties. Drives without published acoustic data are not ranked here.
| Drive | Capacity | Idle noise | Tech | Class | Interface | AFR | €/TB | Price | |
|---|---|---|---|---|---|---|---|---|---|
| 1 |
WD241KRYZ
WD Gold
|
24 TB | 20 dB | CMR | Enterprise | SATA | - | €49.48 | €1,188 |
| 2 |
WD221KRYZ
WD Gold
|
22 TB | 20 dB | CMR | Enterprise | SATA | - | €51.06 | €1,123 |
| 3 |
WD202KRYZ
WD Gold
|
20 TB | 20 dB | CMR | Enterprise | SATA | - | - | - |
| 4 |
WD181KRYZ
WD Gold
|
18 TB | 20 dB | CMR | Enterprise | SATA | - | €53.17 | €957 |
| 5 |
WD161KRYZ
WD Gold
|
16 TB | 20 dB | CMR | Enterprise | SATA | - | - | - |
| 6 |
WD142KRYZ
WD Gold
|
14 TB | 20 dB | CMR | Enterprise | SATA | - | - | - |
| 7 |
WD121KRYZ
WD Gold
|
12 TB | 20 dB | CMR | Enterprise | SATA | - | €54.15 | €650 |
| 8 |
WD102KRYZ
WD Gold
|
10 TB | 20 dB | CMR | Enterprise | SATA | - | €58.50 | €585 |
| 9 |
WD8004FRYZ
WD Gold
|
8 TB | 20 dB | CMR | Enterprise | SATA | - | €58.74 | €470 |
| 10 |
WD6004FRYZ
WD Gold
|
6 TB | 20 dB | CMR | Enterprise | SATA | - | €64.05 | €384 |
Ranked by idle noise (A-weighted sound power). $/TB shows once live prices are wired.
Why idle noise is the number that matters
A NAS spends most of its life idle, so idle sound power tells you what you will actually hear day to day. Seek noise only shows up during heavy reads and writes. We sort on idle first and use seek to break ties.
Noise is a comfort spec, not a safety one. Use this list to narrow a shortlist you have already filtered for CMR and reliability, not as the first cut.
Frequently asked questions
- What makes a NAS drive quiet?
- Lower spindle speed and platter count, mostly. The 5400-class NAS drives (IronWolf, WD Red Plus) are usually quieter than 7200 RPM enterprise drives, and helium-filled drives can run quieter and cooler than air-filled ones at the same capacity.
- Are the noise figures comparable across brands?
- Reasonably. We use each manufacturer's A-weighted sound power (dB) from the datasheet, idle and seek, measured to similar ISO methods. Real-world noise still depends on your enclosure, drive mounting and how many drives you run together.
- Is a quiet drive worth a higher failure rate?
- Rarely. Sort by reliability first, then break ties on noise. A drive that is 1 dB quieter but measurably less reliable is a bad trade for an always-on array - check both columns before buying.