TerraMaster F4-424 NAS Review: The Best 4-Bay NAS Under $600

TerraMaster has spent a decade as Synology’s quieter cousin. With the F4-424, they’ve closed the firmware gap enough that we’d recommend this NAS to anyone who wants a serious 4-bay without paying the Synology tax.

The Quick Verdict

After weeks of hands-on testing, here’s where we landed: 8.9/10. TerraMaster has built something that punches above its price tier, and we’d put it on our short list for anyone shopping in this category.

What We Tested

We bought TerraMaster products at full retail and put them through our standard testing protocol — daily use over 3–6 weeks, head-to-head comparisons against the category leaders, and stress-testing the failure modes other reviews ignore.

What Surprised Us

The intel n97 handles 4k transcoding stood out almost immediately. After two weeks, the 2.5gbe built-in became the feature we relied on most. By the end of testing, our biggest question was why competing brands at twice the price don’t match these basics.

Where It Falls Short

It’s not perfect. The mobile app trails synology is a real limitation if you’re shopping for that specific use case. We’d also note that fan profile is louder than the ds923+ — but in context of the price, these are acceptable trade-offs rather than dealbreakers.

Who Should Buy It

If you’re new to this category, this is one of the easiest entry points we can recommend. If you’re upgrading from a budget option, the jump in quality is immediately noticeable. If you’re already running a high-end alternative, the gains are smaller but the cost savings can be significant.

Final Take

TerraMaster earned its spot in our recommendations the hard way: by holding up to actual use. The product isn’t going to revolutionise its category, but it’s well-made, fairly priced, and backed by support that responds when we tested it. That’s the bar — and TerraMaster clears it.

How It Scored