Aoostar NAS & DIY server — brand guide & official specs
Aoostar makes compact 4-bay NAS mini-PCs that ship without a NAS OS — a 3.5"/2.5" SATA chassis, dual 2.5GbE and M.2 slots, at a fraction of the price of a Synology or QNAP box. That is what makes it the go-to host for fnOS / FygoOS, TrueNAS and Unraid. Like UniFi and fnOS on this site, Aoostar publishes official specs rather than a per-drive whitelist: standard SATA drives up to a per-model ceiling, any drive in class works.
Aoostar — Budget 4-bay NAS mini-PCs (WTR Pro, Ryzen 7 & N100) — a low-cost fnOS/FygoOS host.
About Aoostar
Company: Aoostar (Chinese mini-PC maker, sold via official store / AliExpress / Amazon)
Product type: 4-bay NAS mini-PC (ships Windows 11 or barebones)
Based on: x86-64 (AMD Ryzen 7 5825U / Intel N100), 4× SATA 3.5/2.5 + M.2 NVMe
Line-up: WTR Pro (5825U 8-core, dual 2.5GbE, up to 64GB) and WTR Pro (N100 low-power tier)
Aoostar makes compact 4-bay NAS mini-PCs at a fraction of the price of a Synology or QNAP box — same 3.5/2.5 SATA chassis, dual 2.5GbE, M.2 NVMe — sold as barebones or Windows 11. That price gap is why the fnOS/FygoOS and TrueNAS community builds on it: you get a 4-bay, dual-2.5GbE box for less than a 2-bay appliance and pick your own OS.
Aoostar product lines
| Line | Segment | Notes |
|---|---|---|
| WTR Pro (Ryzen 7 5825U) | 4-bay NAS | 8C/16T, dual 2.5GbE (link aggregation ~5Gbps), 4× SATA + 2× M.2, up to 64GB DDR4 — the enthusiast tier |
| WTR Pro (Intel N100) | 4-bay NAS (low-power) | 6W quad-core, single 32GB SO-DIMM, single M.2 — the budget/quiet tier |
All Aoostar models — official specs
How Aoostar drive compatibility works
Aoostar publishes official specs only: bay count, SATA interface and a per-model capacity ceiling (Up to 88 TB (4× 22TB) / 96 TB (4× 24TB) per vendor listing for the 4-bay WTR Pro). There is no firmware lock and no per-drive whitelist — any standard SATA 3.5"/2.5" drive within the limits works, at your own responsibility. The official FAQ notes 2.5" fitment varies by model; 3.5" is the safe assumption for a 4-bay array. The practical rule is the same as on every box on this site: CMR, NAS-class drives for RAID pools, an SSD for the system volume.
Can you run fnOS / FygoOS on these?
Yes — both WTR Pro variants are x86-64, the exact platform fnOS/FygoOS installs on. Aoostar ships Windows 11, so the NAS build is a wipe-and-install: use one M.2 slot for the OS and the four SATA bays for the pool. Aoostar's official support line covers Windows — third-party NAS OSes are community territory, which is exactly why each model page here carries an fnOS/FygoOS note. Licensing (free 3-user/4-drive tier, $49 / $199) is in the FygoOS pricing guide; domestic vs international edition in FygoOS vs fnOS.
Strengths & weaknesses
✓ What Aoostar does well
- A 4-bay, dual-2.5GbE NAS box well below appliance pricing
- Runs fnOS/FygoOS, TrueNAS SCALE, Unraid — OS-agnostic x86
- Ryzen 7 5825U transcodes and virtualizes in a 15-25W envelope
- Magnetic front panel + toolless trays, 12cm cooling
✗ Where it trails
- Ships Windows 11 (NAS build = wipe + install)
- Official support covers Windows; third-party NAS OSes are community territory
- No per-drive whitelist and no 10GbE / PCIe expansion
- Spring-loaded 3.5" trays feel cheap (reviewer note)
Who should buy Aoostar (and who shouldn't)
Good fit if you:
- A cheap 4-bay fnOS/FygoOS or TrueNAS box with dual 2.5GbE
- Reviving a high core-count CPU for transcoding on a budget
Look elsewhere if:
- You want a supported appliance with per-drive certification
- You need 10GbE or PCIe expansion (the MS-01 or a bigger platform)
Pricing: Barebones from roughly $289 (N100) to $389+ (5825U), plus drives and RAM — check the official store.
Software: OS-agnostic: ships Windows 11, but fnOS/FygoOS, TrueNAS and Unraid install from the M.2 slot; each model page links to the relevant guide.
Aoostar FAQ
What is the Aoostar WTR Pro?
A 4-bay NAS mini-PC with 2× M.2 NVMe and dual 2.5GbE, in two tiers: an AMD Ryzen 7 5825U (8-core) enthusiast model and an Intel N100 low-power model. It ships as barebones or with Windows 11; the NAS OS is your choice.
Can you run fnOS or FygoOS on Aoostar?
Yes — it's a standard x86-64 platform, so fnOS/FygoOS, TrueNAS SCALE and Unraid all install from an M.2 slot. Aoostar's official support line covers Windows, so a third-party NAS OS is community territory; our model pages carry the fnOS/FygoOS note.
Compare with the other brands
Sizing a 4-bay buy? See the 4-bay cross-vendor comparison, the fnOS brand page for the free-OS route, and the RAID calculator for the capacity and rebuild math.