Editorial, 22 Aug 2026. Specs from maker pages and named street reports. We have not burned these units in. Affiliate tags are not live. Confirm the diskless SKU before you click — Amazon is full of drive bundles.
TerraMaster F4-424 Pro: 32 GB DDR5 4-bay for Docker or TrueNAS
The affiliatable 4-bay with an i3-N305 and 32 GB. TOS in the box. x86 people actually re-image. Not a TrueNAS Mini X+ buy button.
Official spec: Intel Core i3-N305 (8C/8T, burst 3.8 GHz), 32 GB DDR5 non-ECC in one slot, officially not upgradable past 32 GB, dual 2.5GbE with LACP, dual M.2 2280 NVMe (PCIe 3.0 x1), four SATA, HDMI 2.0b, two USB 3.2 Gen 2 10 Gbps. 90 W brick. 2-year warranty. 222 × 179 × 154 mm. Official power with four Seagate 4 TB ST4000VN008: 33.0 W read/write, 13.0 W hibernation. Noise claim 21.0 dB(A) standby. Dual 2.5GbE LACP “linear transfer speeds up to 283 MB/s” is TerraMaster’s number (they have also cited that figure on 4× 18 TB RAID 0). Maker claim, not our iperf.
Non-ECC RAM — say that. 32 GB soldered-in-practice is the pitch versus every 2–6 GB Plus box. TOS runs out of the box. The board is x86, and people put TrueNAS or Unraid on it. We have not re-imaged one. That is a community path, not a Labthrift burn-in.
iXsystems TrueNAS Mini X+ is the ECC / 10GBase-T comparison, not the CTA. Official product is real: C3758, 32 GB ECC, 5× 3.5" + 2× 2.5", dual 10GBase-T, buy path is the iXsystems configurator (USA/Canada). A 2026 TrueNAS forum report put the US configurator around $1909 diskless. Historical Amazon ASIN B08FCWBVWX is not a stable Associates target. Do not treat Mini as the hero SKU on this page.
Drives stay CMR. Skip EFAX / EZAZ / BarraCuda 3.5" 4 / 8 TB SMR. IronWolf 1–6 TB is 5400 RPM — the 4 TB IronWolfs in TerraMaster’s own power test are that class. For a ZFS pool you still want CMR; 7200 helps more than the badge. HDD picks. Appliance vs re-image: DIY vs appliance.
Street, 22 Aug 2026
| Path | What we found | Note |
|---|---|---|
| TerraMaster store, diskless | $730.99 (listed $859.99) on 22 Aug 2026. Comparison table on the F2-425 page matches $730.99. | terra-master.com/products/f4-424-pro. nashq PDF cited $699.99 class. Datacenterdisk $687.99. Confirm live. |
| Amazon diskless | ASIN B0CPPD51B9 | B0CPPD51B9. |
| Newegg | 14P-006A-00066 | Official-store diskless only. |
| Mini X+ (comparison) | iX configurator; forum 2026 ~$1909 diskless | truenas.com/truenas-mini. Not the buy button. |
Skip
Skip if you need ECC and a supported TrueNAS appliance — that is Mini, and it is a different budget. Skip if you wanted 10G onboard; this is dual 2.5G. Skip if TOS-or-bust is a worse Sunday than DSM. Skip SMR in ZFS. Skip a used LSI HBA scavenger hunt as the “cheaper” DIY; that is not a first backup box.
Sources
TerraMaster F4-424 Pro spec page (i3-N305, 32 GB DDR5 non-ECC, 33 / 13 W, 283 MB/s, $730.99, fetched 22 Aug 2026). Amazon B0CPPD51B9. iXsystems Mini page. TrueNAS forum, 2026, US configurator $1909. We have not sat with a unit and we have not installed TrueNAS on one.