How loud is a TerraMaster NAS?
19.0 to 27.4 dB(A) for a current desktop model, with the newer ones giving a 1 m test distance and a 17.3 dB(A) room. T series towers and U series rack units list 22.3 to 39.0 dB(A).
Standby means the drives were spun down or resting. The row therefore describes the fan and power supply more than a NAS at work, and nothing is printed for a box copying files or rebuilding an array. The note leaves the drive type open as well, since "Using 2 SATA HDDs/SSDs" covers either a hard drive or an SSD. Beyond the distance, nothing is said about the microphone, its type or its position.
On the two drive note, the F2-425 and F2-424 lead at 19.0
Six current desktop models carry the wording "Using 2 SATA HDDs/SSDs in standby mode".
| Noise Level | Model | Bays | Fan |
|---|
| 19.0 dB(A) | F2-425 | 2 | One 80 mm |
| 19.0 dB(A) | F2-424 | 2 | One 80 mm |
| 20.0 dB(A) | F2-425 Plus | 2 plus three M.2 | One 80 mm |
| 21.0 dB(A) | F4-425 | 4 | One 120 mm |
| 21.0 dB(A) | F4-424 | 4 | One 120 mm |
| 21.0 dB(A) | F4-424 Pro | 4 | One 120 mm |
The four bay rows are the weak spot. All three were tested with two drives in four slots, which is half the load of a full array.
The rack mounted U8-725 and U12-725 share this note too, at 39.0 dB(A) each, but a server cabinet is a different purchase.
Only two four bays were tested full
The F4-425 Plus and F4-425 Pro are the only current models measured "Using 4 SATA HDDs/SSDs in standby mode". Both list 20.9 dB(A), 0.1 below the half full F4-425 row.
They share a case, a 120 mm fan and a 90 W supply, and differ in the chip: an eight core N305 or N350 in the Pro, a four core N150 or N95 in the Plus. Choose on processing need. The noise rows give no reason to prefer either.
All flash and M.2 tested models start at 19.0
The F8 SSD Plus, F8 SSD and F4 SSD each list 19.0 dB(A) "Using M.2 SSDs in standby mode", the lowest figures under that note. Some larger boxes with SATA bays were also measured with nothing but M.2 drives inside.
| Noise Level | Model | Bays |
|---|
| 19.0 dB(A) | F8 SSD Plus, F8 SSD and F4 SSD | All flash |
| 21.0 dB(A) | F4-424 Max | Four SATA |
| 22.0 dB(A) | F6-424, F6-424 Max and F6-425 Pro | Six SATA |
| 22.5 dB(A) | T9-500 Pro | Nine SATA |
| 38.0 dB(A) | U8-500 Plus | Rackmount |
For the all flash models, the test matches what you will own. For the F6 and T9 rows it does not: their SATA bays were empty, and hard drives will add to the figure.
The older Seagate note, led by the F4-212
"Fully loaded Seagate 4TB ST4000VN008 hard drive(s) in idle state" names the drive and fills every bay. It gives no distance or room level, though. The F4-212 is lowest among current models at 21.0 dB(A).
| Noise Level | Model | Bays |
|---|
| 21.0 dB(A) | F4-212 | Four |
| 22.3 dB(A) | T6-423 | Six |
| 27.4 dB(A) | F2-213 and F4-213 | Not listed |
| 31.2 dB(A) | T9-423 and T9-450 | Nine |
| 31.4 dB(A) | T12-450 | Twelve |
On the F2-213 and F4-213 pages both models show as sold out with a placeholder price of $999.00, so no real US price could be confirmed. The ST4000VN008 is a Seagate IronWolf, and the quietest hard drives guide covers its own figures.
How loud are TerraMaster USB enclosures?
Hard to say, for most of them.
The D series rows usually print a bare figure with no drive, distance or background: 21.0 dB(A) for the D4-320, D4-321 and D8 Hybrid 2, 22.3 for the D6-320, 22.5 for the D9-320. None of those can be ranked against the NAS rows, and even the 1.5 dB(A) spread between them is too thin to lean on. The TD2 Thunderbolt 3 Plus lists 18.6 and the rack mounted D4-320U 35.0, both with no condition.
Three enclosure rows do state a test.
| Noise Level | Enclosure | Test |
|---|
| 19.0 dB(A) | D5 Hybrid | Two SATA drives in standby, 1 m, 17.3 dB(A) room |
| 19.0 dB(A) | D4 SSD | M.2 SSDs in standby, 1 m, 17.3 dB(A) room |
| 23.8 dB(A) | D2-320 | Seagate 22TB drives in read/write, 1 m, 17.3 dB(A) room |
The D2-320 is the only TerraMaster row found that was measured with drives working. Both the D5 Hybrid and D4 SSD were out of stock on Amazon on November 8, 2026. At the far end, the 16 bay D16 Thunderbolt 3 lists 55 dB(A) with Seagate EXOS drives reading.
Is the TerraMaster F4-424 loud?
21.0 dB(A), with two SATA drives in standby at 1 m, which puts it 2.0 dB(A) above the two bay F2-424 on the same note.
Two bays sat empty and the drives were resting, so a full F4-424 working through a scrub will sound louder than 21.0, and no fully loaded row exists for it. It is sold out on TerraMaster's store, and no new unit turned up in stock on Amazon. The F4-425 Plus, measured with four drives at 20.9 dB(A), is the closer match to a full box.
No noise row appears on the spec page for the D5-310 hardware RAID enclosure. The fanless D1 SSD and D1 SSD Pro read "Noiseless", a description and not a measurement. The F2-423, F4-423, D2-310, D5-300 and D5-300C product pages now return a not found page on TerraMaster's store, and the old D8 Hybrid page redirects to the D8 Hybrid 2, so all of them are treated as discontinued. A few spec pages linger online, such as the F4-423 at 27.4 dB(A), and those are left unranked.
