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Are Chinese NAS Devices Safe? Let’s Discuss…

Par : Rob Andrews
21 juillet 2025 à 18:00

Are Chinese DIY NAS Devices Worth Your Time, Money, and Data?

Over the last 2 years, I have discussed at length multiple different Chinese-built NAS solutions in one form or another. From DIY NAS motherboards from brands like Topton and CWWK to pre-built solutions arriving both with and without NAS software from brands like Ugreen, Terramaster, Aoostar, and more. Thanks to the miniaturisation and power efficiency improvements in a multitude of different kinds of PC hardware, a lot of brands originally developing mini PCs, tablets, and laptops have started including developments towards NAS systems in their portfolios. Some brands, like Ugreen and Terramaster, have gone into this with significantly more energy than others, including and further developing their very own NAS software that is included with the hardware. But regardless of whether you are looking at a Chinese DIY NAS that does or does not include its software, it still raises the question of whether these solutions are worth your time and money. Are they as reliable as some of the long-established players providing solutions from Taiwan or the US? Can you trust it with your data? Let’s discuss.

Chinese NAS Brands That I Recommend

These are the brands I would personally recommend if you are considering a China-based NAS brand. These are 6 brands that I have used many of their products (NAS and others) that I have found the best experiences with, as well as, on balance,e the best online support and communication. No brand is perfect, and look hard enough and you will find good and bad on any brand, really, but these are six examples of brands that stand out from the others.

Buy Here on AmazonVisit Their Own Store

Buy Here on AmazonVisit Their AliExpress Store

Buy Here on AmazonVisit Their AliExpress Store

Buy Here on AmazonVisit Their AliExpress Store

Buy Here on AmazonVisit Their AliExpress Store

Buy Here on Amazon


The TL;DR – Are Chinese DIY NAS Devices Worth It?

  • Chinese NAS popularity is rising due to affordability, broader hardware variety, and greater accessibility in Asia.

  • Brands like Ugreen and Terramaster have built their own NAS software, adding credibility to their name in the eyes of consumers and long-term support potential that a lot of other options seem to tangebly lack.

  • Mini PC brands (e.g., Minisforum, GMKTec) are repurposing their platforms into NAS devices, leveraging existing consumer trust.

  • Many Chinese NAS systems are hardware-only, allowing users to install platforms like TrueNAS or UnRAID.

  • DIY-friendly: Chinese NAS devices often support third-party OS installs without voiding warranty—unlike many Western brands.

  • Hardware value: You can expect up to 25–30% lower prices compared to similar US/Taiwan/Japan-made systems.

  • Tech culture: China has a more tech-literate consumer market, visible in high street and airport advertising.

  • Security concerns exist, largely due to past incidents of spyware or malware embedded in hardware from some Chinese vendors.

  • Using trusted open-source OS platforms can reduce risks—but can’t fully eliminate them if vulnerabilities are in firmware/hardware.

  • Not all Chinese brands are equal—research brand background, online presence, and operational transparency.

  • Some no-name brands just rebrand OEM hardware (e.g., from CWWK), but offer poor support and minimal warranty backing.

Support issues include:

  • No regional presence

  • Language/cultural barriers

  • Long RMA turnaround

  • Tax/import delays for returns

Brands with better reputations for support include: CWWK, Jonsbo, and Terramaster.
Be wary of AliExpress-only brands with no official website or global support—these often lack accountability.

Ultimately: Yes, you can buy a NAS from China—just stick to reputable brands, do your research, and stay security-conscious.

$169 n150 4x M.2 NVMe SSD NAS – The GMKTek G9


Why Have Chinese NAS Systems Rapidly Grown in Popularity?

The easy answer to this would be to say that they tend to be a lot cheaper than NAS products that are built in the US, Europe, or surrounding Eastern countries like Taiwan or Japan. Indeed, that is true, and you tend to find that NAS systems made in China are typically offered at great value price points and hardware value compared to anywhere else in the world. However, the popularity of Chinese NAS systems is actually a little bit more nuanced and about a lot more than simply money.

The UGREEN DXP NASync Series Now Globally Available

For a start, some of the brands that are currently moving into providing their own network-attached storage solutions are brands that already had a well-established presence in homes and offices around the globe for other peripherals. A great example of this would be Ugreen. Ugreen has provided accessories for PCs, power adaptors, and portable docking stations for quite a few years and is probably one of the most recognisable names for this kind of technology from China around the world.

The Aoostar WTR N305 4 Bay NAS Drive

Therefore, in early 2024, when the brand announced it was entering the world of NAS in the Western world, the brand already had a fairly solid and well-documented audience in place. That is likely why the brand, although still pretty good value, is actually slightly more expensive than the majority of other Chinese NAS brands.

The Terramaster F6-424 Max NAS – 2x 10GbE, 2x Gen 4×4 M.2 NVMe & Intel i5 CPU

Alternatively, you have brands like Terramaster, who have been in the network-attached storage industry for over half as long as the likes of QNAP and Synology, and during that time have built up a fairly solid audience base long before the arguably heavy influx of smaller, lesser-known brands entering the world of NAS from China.

The Terramaster F6-424 Max NAS – 2x 10GbE, 2x Gen 4×4 M.2 NVMe & Intel i5 CPU

Chiefly purchased for its hardware until now, Terramaster is a brand that has a fairly comprehensive and well-detailed software platform in TOS. Of course, both of these brands provide much better value for money than alternatives in the market from other countries, but in a lot of cases, people are purchasing these solutions for more than just the bottom-line price.

The Lincplus Lincstation N1 & N2 4x M.2 and 10GbE NAS

Alternatively, there is the now heavily saturated market of mini PC vendors who have modified a lot of their existing production and systems to now leverage towards storage. In many cases, some of these brands—such as Minisforum and GMKTec—already have a healthy relationship with consumers thanks to their mini PCs, and that brand awareness has clearly transferred over to NAS products.

The Minisforum N5 Pro NAS – AMD i9 HX370 / ECC Memory / 10+5GbE / 5 SATA and 3 M.2 NVMe

The other thing that makes these Chinese NAS products very appealing to new and even old NAS buyers is that a lot of them arrive without software included. This allows users to get just the hardware at a lower price and then go ahead and install software such as TrueNAS or UnRAID, because they want to take advantage of those more flexible (if slightly more intimidating) platforms. The majority of NAS products that arrive from other countries tend to arrive with their own NAS software included and, more often than not, do not allow the warranty to continue being supported if you install a third-party operating system. Whereas practically all NAS products that are developed in China tend to allow you to use third-party operating systems—even when they include their own OS (again, see Terramaster and Ugreen).


What Are the Benefits of Chinese NAS Systems?

Ultimately—and it’s kind of a shame that this is the headline here—but it is, of course, that NAS systems from China will generally give you much better hardware at a lower price tag. That isn’t to say that these systems are always going to be universally the lowest price, but it is simply that the average price tag of the system configuration and hardware, compared across multiple regions, will generally always end in the product being cheaper when it is manufactured in China.

UGREEN DXP8800 PLUS NAS – 10GbEx2, Intel i5 CPU, Gen 4×4 NVMe

More often than not, whether you’re looking at a fairly modest entry-level Intel Celeron / Intel Alder Lake / Intel Twin Lake-based NAS system or scaling it up all the way towards Intel Core and AMD Ryzen systems, you will tend to find that NAS solutions built in China are as much as 25 to 30% lower in price than those made in the rest of the world.

The UnifyDrive UP6 6x NM.2 NVMe SSD Portable NAS

I guess you could also add that if you are based in the Eastern part of the world, there are also tremendous benefits to these solutions being so readily available and accessible. Indeed, on a recent trip to Shenzhen, I noticed how there were significantly more DIY NAS solutions available on the high street and in the tech malls than anywhere else in the world. A big part of this is that the general average standard understanding of tech hardware is higher out there than in a lot of Western regions. That isn’t to say that we don’t have a tremendously high volume of users who understand this kind of technology in the US and Europe, but the way it is framed to the consumer is notably different.

So, for example, if you walk around an airport in China, Hong Kong, or Taiwan, you will often see advertisements of a pretty technical nature with regard to CPUs and graphics cards on the back of trolleys, billboards, and on the sides of public vehicles. Whereas in America and Europe—although this is still not completely absent—adverts are much more focused on the end product, such as phones, tablets, laptops, and domestic client hardware.


Why Are People So Concerned About Chinese NAS System Security?

It is a pretty bloody valid concern! In recent years, tensions between large countries with regards to trade have been on the rise—one of the biggest being the US–China trade war, which, although it has ebbed and flowed over the last seven or eight years, is actually something that has existed for a few decades now. It largely boils down to the import and export of this kind of technology. However, the breaking point came when several Chinese products were found to contain spyware and malware that was hard-baked into the hardware and allowed for remote collection of user data. Numerous brands were implicated, and the fact that there is a degree of ambiguity between numerous Chinese brands in the eyes of the world—regarding how many of them cross over at the point of manufacture and how many of them are on the same production line filtering toward various brands—all added up to increased tensions and, eventually, several companies and organisations being barred from sale in the US.

Sourcehttps://www.computerweekly.com/news/366622023/NCSC-issues-warning-over-Chinese-Moonshine-and-BadBazaar-spyware/

How much this has been respected by certain Chinese players in the past—I am not going to blanket-tarnish all Chinese brands with this, as that would be both unfair and hugely incorrect. Nevertheless, a small group of bad apples has certainly soured the mood for many when it comes to purchasing Chinese NAS products in terms of security, especially when it is noted that these systems will be on 24/7, contain all of your data, and, in many cases, are directly or indirectly connected to the internet depending on your own personal setup.

Source: https://www.security.com/threat-intelligence/us-china-espionage/

This is one of the main reasons why a lot of users will purchase a Chinese NAS product specifically if it does not arrive with any kind of included operating system. A lot of users would rather trust established and Western-orientated NAS brands such as TrueNAS and UnRAID, as these have a proven track record of firmware updates and security tools, but also have recognised vulnerability and security disclosure programs that they work with to be held accountable in the event of any security incident being recognised. Nevertheless, on numerous occasions, it has been noted that security vulnerabilities—and the aforementioned spyware, when it has been recognised—have been hard-baked into the hardware components and physical controllers, which means that regardless of the NAS software you use, some of these devices still have the potential to contain security vulnerabilities.

Now, playing devil’s advocate, it could actually be possible for any hardware manufacturer in any country in the world to implement these kinds of security breach methodologies into their hardware. When you really break it down, the architecture of a NAS device—regardless of where it is built in the world—is going to be largely similar to that of a standard PC, and therefore the opportunities for exploitation and manipulation are still going to be on the table. Nevertheless, although it has been recognised that different regions of the world have had their own bad actors who have introduced vulnerable devices into the market unbeknownst to end users, there is still no avoiding that the lion’s share of the manufacturers found culpable for this have been based in China.

However, we also have to be slightly reasonable in that, given the larger share of hardware that is manufactured and distributed from China, then statistically, they are always going to have the larger number of incidents. The propaganda machine of numerous nations will always be at play to present a particular picture of the safety of imported devices, but all that aside, it does still seem that—despite instances of systems with inbuilt vulnerabilities decreasing all the time—they do crop up more frequently in products made in China than anywhere else in the world.

Herehttps://www.tomshardware.com/desktops/mini-pcs/mini-pc-maker-ships-systems-with-factory-installed-spyware-acemagic-says-issue-was-contained-to-the-first-shipment/

Should this be a reason to completely disregard purchasing a NAS solution from China? No, I don’t think so. I think it is a good reason to investigate the brand or organisation that you’re choosing to purchase from. I think it is a good reason to investigate how long a company has been in operation and to find out more about their offices and operations before making a purchase. And I do think it is all the more reason why organisations should not automatically assume that any piece of hardware from anywhere in the world is automatically the most secure out of the box, and should be implementing their own firewalls, VPNs, authentication methods, and security protocols regardless.


Remote Accessing My Chinese NAS – Alternatives to the Host OS

If you’re hesitant to use the default remote access features provided by your Chinese-made NAS due to privacy, transparency, or security concerns, you’re not alone—and thankfully, there are much safer and more trusted options available.

One of the most popular and user-friendly tools in this space is Tailscale, a modern mesh VPN built on WireGuard. Tailscale allows you to securely access your NAS (or any other device on your network) from anywhere in the world—without the need for risky port forwarding, dynamic DNS, or vendor cloud logins. With just a few clicks, you can create a private, end-to-end encrypted network between your NAS, phone, tablet, and computers, all managed via a clean web dashboard. It works across firewalls, NAT, and even CGNAT (carrier-grade NAT), which makes it ideal for less technical users looking for peace of mind when accessing their files remotely.

For those who want more customization or are working in slightly more advanced environments, there are other powerful self-hosted or cloud-assisted VPN solutions worth considering. Tools like ZeroTier allow for flexible, programmable virtual networks with global peer-to-peer routing. Meanwhile, OpenVPN and WireGuard (standalone) offer rock-solid, time-tested security for users comfortable with deploying and managing their own VPN servers. These services can be installed directly on your NAS or hosted on another home server or Raspberry Pi on the same network, offering complete control over who gets access and how. If you’re running TrueNAS, UnRAID, or even Debian/Ubuntu-based DIY NAS software, many of these can be installed natively or through Docker containers. This means you can completely bypass the vendor-supplied cloud services, eliminating a major attack surface while retaining secure access from anywhere.

Here are some of the most reliable and widely recommended remote access alternatives:

  • 🔒 Tailscale – Simple, secure mesh VPN using WireGuard; ideal for non-technical users

  • 🌐 ZeroTier – Virtual network overlay with programmable access control and P2P routing

  • 🔐 WireGuard (standalone) – Lightweight, fast, and secure VPN for advanced users

  • 🧰 OpenVPN – A well-established, highly configurable VPN solution

  • 🐳 Dockerized Access Tools – Solutions like Headscale (Tailscale self-hosted), PiVPN, or Cloudflare Tunnel

  • ☁ Cloudflare Tunnel (Argo Tunnel) – Secure reverse proxy with public access protection

  • 🧠 FRP (Fast Reverse Proxy) – Lightweight self-hosted tunnel service often used in Chinese networks

  • 📱 Syncthing – Peer-to-peer file sync tool for remote file access without VPN (for specific folders)

Using any of these tools, you can confidently disable or ignore the default remote access features provided by your NAS vendor and instead implement a hardened, trusted, and fully auditable solution. In doing so, you’re minimizing potential exposure, maintaining privacy, and ensuring that your remote access setup is under your control—not in the hands of a third-party vendor.


Should Users Be Concerned About Support?

Alongside the ever-present concerns around security, the other big issue that users tend to mention about purchasing Chinese NAS products is to do with support. It’s not unusual for a product or solution that you purchase in the market to not have a local or regional office that you can talk to in the event of hardware faults or software difficulties. Just because a product is manufactured in China doesn’t mean it’s the only one that suffers from the geographical hurdles of purchasing a system built in a completely different country than your own.

For example, there are plenty of American manufacturers that do not have any regional offices in Europe, and most support is provided remotely. In those cases, what puts support for products made in China into a different category for many is:

  1. Language and cultural differences in communication between end users and the brand, and

  2. The logistical difficulties of replacing a malfunctioning device with a replacement or repair.

Most of us are quite familiar with—and are happy to accept—that issues occur in the day-to-day operations of most large-scale mass manufacturing production lines. Even high production lines with a 0.01% failure rate, once you break into the million units, are still going to result in a handful of users who might receive a unit that is less than fully operational. But alongside the delays of swapping a bad device for a good one, other hurdles such as time zone differences and potential tax issues upon devices travelling internationally need to be considered. Many of these issues are not any one country’s fault and are just part and parcel of global trade that’s ever-present in any technology. However, it is how certain Chinese brands negotiate these many hurdles when selling goods to the US and Europe that very quickly sets apart the good organisations from the bad ones.

In my years reviewing and installing different Chinese NAS solutions, some brands have definitely stood out more than others in terms of their support. For example, in the past 2 years, I have heard significantly more positive warranty/repair threads for CWWK, Jonsbo, and Terramaster than I have for brands like GMKtec, B-Link, or pretty much any brand that only seems to exist on AliExpress and Alibaba but has practically no in-house website or Western presence. That isn’t to say that those first few companies I mentioned have a 100% success rate—definitely not. Some simple Googling will always find you both good and bad instances. However, broadly, I’ve had better feedback from people I have provided support for and from numerous NAS subreddits for those brands than I have for some of the lesser-known and far more isolated organisations.

Another point to highlight is that some of the lesser-known brands are simply reusing existing designs and hardware architecture provided by an original manufacturer and relabelling it as their own. For example, CWWK manufactures a large amount of the hardware solutions you may see in the market, but it just so happens that they are sold to contractors and lesser-known providers who then apply their own manufacturer’s badge.

Where this becomes a problem with support is that if you encounter an issue with your hardware, the relabelled and rebadged name that’s been applied to that CWWK product can only provide limited support and even weaker hardware repair, as they are heavily reliant on the original manufacturer and their own production lines.

In these cases, I once again heavily recommend that if you are going to purchase any Chinese NAS product, that you go to the source. And circling back to the issue of security I mentioned earlier on, you tend to find that when spyware has been found on some hardware systems, it has been due to software that was applied to the hardware after it left the original manufacturer—more often than not, applied within an .exe found autoloading in the included copy of Windows.

So once again, double-check that the brand you’re talking to is the original manufacturer before you purchase a Chinese NAS solution, and double-check that they have some kind of Western presence first. It may seem almost obvious and naïve to say this, but ultimately, a lot of these organisations operate on tremendously thin profit margins. This means that the cost of manpower and hiring sufficiently skilled people to create these Western websites and English-understood points of sale is often left by the wayside by the less scrupulous organisations, as they simply do not have a clear enough print-to-profit or long-term strategy to provide solutions they can trust in order to engage with this.

Should I Buy a NAS from China?

The short answer? Yes, I think you can. You should be as security-aware as (frankly) you should be with any NAS product—as any 24/7 data storage solution is only one vulnerability away from being compromised. But as long as you know the risks and understand that support is not going to be as “next day” as it would be if you purchased a local product, I do genuinely think that you are okay to buy a Chinese NAS solution from the more well-known and reputable brands in the market. If the brand doesn’t have much of an online presence outside of China—even doesn’t really have much of its own website outside of AliExpress, Amazon, or Alibabaavoid them like the plague! Because those brands that aren’t prepared to make even the token effort to have much of an online presence outside of a retail website have certainly not got the profit margin to provide any kind of meaningful support and are more likely to cut corners. Worse still, it is those organisations that have such slim profit margins that are almost certainly going to be the ones that may be more susceptible to influence in installing exploitative or malware software components on their systems for an additional backhand payment.

Chinese NAS Brands That I Recommend

These are the brands I would personally recommend if you are considering a China-based NAS brand. These are 6 brands that I have used many of their products (NAS and others) that I have found the best experiences with, as well as, on balance,e the best online support and communication. No brand is perfect, and look hard enough and you will find good and bad on any brand, really, but these are six examples of brands that stand out from the others.

Buy Here on AmazonVisit Their Own Store

Buy Here on AmazonVisit Their AliExpress Store

Buy Here on AmazonVisit Their AliExpress Store

Buy Here on AmazonVisit Their AliExpress Store

Buy Here on AmazonVisit Their AliExpress Store

Buy Here on Amazon

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Zettlab D6 NAS Review

Par : Rob Andrews
11 avril 2025 à 18:00

Zettlab D6 AI NAS Prototype Review – A Glimpse at the Future of Local AI NAS?

UPDATE – The Zettlab AI NAS is Now Live on Kickstarter and you can find it HERE, or watch the Review of the D6 Here on YouTube.

Alternatively, there is an interview with the creators HERE

The Zettlab D6 represents a compelling entry into the increasingly competitive world of AI-integrated network-attached storage. Developed by a relatively new player in the market, Zettlab is attempting to blend traditional NAS functionality with localized artificial intelligence features, positioning its devices as intelligent storage hubs capable of far more than simple file serving or backups. It’s important to emphasize from the outset that the Zettlab D6 — and its siblings in the D4, D6 Ultra, and D8 Ultra series — are still under development, with the company preparing to launch these systems via crowdfunding rather than established retail channels. This distinction is not trivial: what we’re looking at here is a prototype, an early production model meant to demonstrate core functionality, not a finalized consumer-ready product. As such, this review assesses both the current capabilities and the projected potential, while keeping in mind the expected evolutions that may come post-launch.

This review is based on a pre-release prototype of the Zettlab D6, supplied ahead of the official crowdfunding campaign. While the unit demonstrated strong hardware build quality and successfully showcased many of the local AI features promoted by the brand, it’s important to note that this version may not fully reflect the final product that backers will receive. As development continues, both software and functionality are expected to evolve. A follow-up video will be produced closer to the end of the crowdfunding campaign to reassess the system, evaluate any updates, and determine how closely the final release aligns with early expectations.

BUILD QUALITY - 8/10
HARDWARE - 8/10
PERFORMANCE - 6/10
PRICE - 9/10
VALUE - 9/10


8.0
PROS
👍🏻Real local AI processing (image recognition, OCR, transcription, semantic search) works without internet access on the D6.
👍🏻Intuitive natural language commands for system control (e.g., adjust fan speed, create users, reboot) via built-in AI chat. But still very early days...
👍🏻Excellent LCD display provides real-time system stats (CPU, RAM, IP, disk status) — rare at this price point.
👍🏻Fast and responsive UI with good UX; even advanced features like RAID setup and AI search feel snappy and polished, if a little feature lite at this development stage
👍🏻One-click SD card backup with programmable automation tasks (copy, transcode, eject) — ideal for photographers and creators.
👍🏻Unique design and solid build quality
👍🏻Fully populated app center, thanks to the community, ready packaged container deployment at 1 click
👍🏻Clear product segmentation between D6 and Ultra models (better AI support, faster connectivity, PCIe expansion), allowing users to scale as needed - but could be clearer about the need for an included 1-click local AI client model on the client app requirements.
CONS
👎🏻Not final software — many features are still in beta or marked “coming soon,” including VM hosting and first-party AI enhancements.
👎🏻Partial dependency on desktop client for advanced AI functions (like document chat and LLM integration) on the D6 model.
👎🏻Crowdfunding risks — as a pre-release, crowdfunded device, the final user experience may differ from the reviewed prototype.

Zettlab D6 AI NAS – Hardware Design

Positioned as a mid-tier offering in the range, the D6 occupies a unique spot in Zettlab’s portfolio. It’s more powerful than the compact 4-bay D4, but stops short of the considerable hardware resources found in the D6 Ultra and D8 Ultra. At the heart of the D6 lies the Rockchip RK3588, an ARM-based SoC (System on Chip) that features eight processing cores and an integrated NPU (Neural Processing Unit) capable of six trillion operations per second (6 TOPS).

This chip has become a popular choice for AI-at-the-edge applications due to its low power draw, reasonable performance, and growing developer ecosystem. Complementing the CPU is 16GB of LPDDR4x memory — soldered to the board and non-upgradable — which is ample for many NAS workloads but may bottleneck under high AI load or virtualization. Storage-wise, the system includes six SATA drive bays and a single M.2 NVMe slot for SSD caching or high-speed application hosting. The OS resides on a 32GB eMMC module, which, while functional, is slower and less durable than SSD alternatives found in higher-tier models.

By contrast, the Ultra-class models — the D6 Ultra and D8 Ultra — are built around x86 architecture, using Intel’s Core Ultra 5 125H processor. This CPU offers a dramatic leap in compute potential, with 14 cores (combining performance and efficiency cores), 18 threads, and an integrated AI engine capable of 34 TOPS. These devices support up to 96GB of DDR5 memory via SODIMM slots and include dual PCIe Gen 4 M.2 NVMe slots for storage or app caching. So, an important thing that potential buyers of the standard D4 and D4 model need to note is that this system arrives with ‘on board’ memory, not ‘SODIMM’. This is not uncommon on more ‘efficient’ CPU-powered systems, but AI processes can get really memory hungry and that fixed 16GB, although good to have ‘out the gate’ could potentially serve as a low glass ceiling for heavier ops later on.

Specification Zettlab D4 Zettlab D6 Zettlab D6 Ultra Zettlab D8 Ultra
Drive Bays 4-Bay 6-Bay 6-Bay 8-Bay
CPU RK3588 (8-core, 6 TOPS NPU) RK3588 (8-core, 6 TOPS NPU) Intel Core Ultra 5 125H (14-core, 34 TOPS) Intel Core Ultra 5 125H (14-core, 34 TOPS)
RAM 16GB LPDDR4x 16GB LPDDR4x 16GB DDR5 (up to 96GB) 16GB DDR5 (up to 96GB)
System Drive eMMC 32GB eMMC 32GB 256GB SSD 256GB SSD
M.2 NVMe Slots 1 1 2x PCIe 4.0 x4 2x PCIe 4.0 x4
Max Storage 100TB 148TB 152TB 200TB
RAID Support JBOD/0/1/5/6/10 JBOD/0/1/5/6/10 JBOD/0/1/5/6/10 JBOD/0/1/5/6/10
LAN 1GbE + 2.5GbE 1GbE + 2.5GbE 2x 10GbE 2x 10GbE
USB Ports 1x USB-C 3.0, 1x USB-A 3.0, 2x USB2.0 1x USB-C 3.0, 1x USB-A 3.0, 2x USB2.0 2x USB4, 1x USB-A 3.2 Gen2, 1x USB2.0 2x USB4, 1x USB-A 3.2 Gen2, 1x USB2.0
Display 3.49″ LCD 3.49″ LCD 3.49″ LCD 3.49″ LCD
SD/TF Readers SD4.0 + TF4.0 SD4.0 + TF4.0 SD4.0 + TF4.0 SD4.0 + TF4.0
PCIe Expansion None None SFF-8654 (PCIe 4.0 x8) SFF-8654 (PCIe 4.0 x8)

They also ship with a 256GB SSD for the operating system, eliminating the limitations of eMMC entirely. The D6 Ultra provides six drive bays like its ARM counterpart, while the D8 Ultra expands to eight, catering to users with higher storage demands.

Network interfaces also scale accordingly, with dual 10GbE ports on the Ultra devices, significantly improving throughput for AI workloads or media editing environments. This clear segmentation allows Zettlab to cater to both entry-level users and more demanding professional or prosumer environments.

Although the D6 is not as performance-heavy as the Ultra models, it still delivers a surprisingly mature and distinctive hardware design — especially for a product from a startup brand. Visually, the D6 breaks from the mold of black-box NAS devices with a more industrial design language. The drive trays are notably robust, offering support for both 3.5” and 2.5” drives without the need for tools, and include subtle shock absorption to reduce wear during hot-swaps. Behind the trays, a SATA backplane keeps cabling clean and ensures good airflow, aided by a rear-mounted fan.

The chassis is largely steel and aluminum, with solid build quality across panels and connectors. The front panel features a real-time 3.49-inch LCD display — one of the best I’ve seen in this price range — capable of showing system temperature, CPU and memory utilization, storage status, and network throughput.

This is complemented by an LED lighting strip and a programmable hardware copy button, as well as a comprehensive set of front ports including a USB-C and USB-A port (both USB 3.2 Gen 1), SD3.0 and SD4.0 card readers, and a TF card slot.

Connectivity on the D6’s rear I/O is functional, if modest by today’s standards. It includes one standard Gigabit Ethernet port and one 2.5GbE port — which, while useful for small workgroups or home streaming setups, may limit its viability in higher bandwidth environments.

USB 2.0 ports are also present, mainly for legacy peripherals or UPS/KVM support. There is a single HDMI 2.0 port capable of 4K output at 60Hz, which opens the door for potential direct media playback or GUI access, though its use cases are still undefined in the current firmware.

Notably missing is any PCIe expansion capability — a feature reserved for the Ultra models via their SFF-8654 Gen4 x8 connector. This omission makes sense in the product segmentation strategy, but prospective users who anticipate needing expansion — whether for faster networking, GPU acceleration, or additional storage — will need to look to the higher-tier models.

Still, for what it is, the D6 offers a complete and well-assembled foundation, and the early signs in terms of temperature control, acoustics, and system stability are encouraging.

Zettlab D6 – Software and Services Review

Before we get into exactly what this system can and cannot do, I need to highlight that the D6 prototype I received does not feel like a finished product yet. I have been monitoring this brand and it’s solution for 6 months (even having a different prototype sent to me as fast back as October 2024) and although I have seen ALOT of changes and improvements in the GUI, the software features, storage optimization, performance and consistency – the Zettlab OS does not feel finished yet.

The hardware feels robust and ready to go! But the software still feels like development is ongoing. This makes a lot of sense in the context of crowdfunding a product and I can appreciate that the brand needs real world feedback and development time. However, that does mean that reviewing the software is tough! As I have to balance what the system does TODAY against what the brand says it will be able to do TOMORROW. So keep that in mind as you read this software review.

One of the standout ambitions behind the Zettlab D6 is its integration of localized artificial intelligence. While most consumer NAS systems limit themselves to media management and basic data organization, Zettlab’s vision goes much further: a platform that applies real-time AI processing to images, audio, video, and documents — all without relying on cloud services.

This pitch is especially appealing in a world where data privacy is an increasing concern. In practice, the D6 delivers some truly novel capabilities, although it’s important to remember this software is still in active development. Not all features are complete, and the performance and behavior of certain AI tools are still subject to change.

The D6 runs on ZettOS, a proprietary operating system built around containerized apps, lightweight AI inference engines, and standard NAS functions.

ZettOS resembles a more refined version of a web-based Linux desktop, complete with user management, storage setup, application deployment, network configuration, and protocol support (SMB, FTP, WebDAV, etc.).

While the core system functions well, it’s the AI layer where things begin to differentiate the D6. ZettOS offers native support for facial recognition, object detection, OCR, and natural language search — all running directly on the device.

Image tagging, semantic queries like “men standing near trees,” and auto-transcription of audio and video files are examples of what’s already functional today.

One of the more impressive capabilities is real-time media classification. Photos added to the NAS — whether uploaded manually, copied via SD card, or moved over the network — are immediately scanned and indexed. Users can search for visual content by descriptive terms rather than filenames. For example, searching for “cats,” “dice,” or “flowers” surfaces content accurately, regardless of how files were named.

This indexing happens locally and often within seconds of upload, leveraging the RK3588’s integrated NPU. Similarly, when audio or video files are uploaded to designated folders, the system automatically transcribes them using onboard tools. The Clip application handles this, and within moments, transcripts appear with speaker identification and time-linked navigation.

The AI features are tied to a broader system of prompts and shortcuts. A dedicated “AI Chat” interface allows users to type commands like “increase fan speed,” “reboot the system,” or “create a new user.” Many of these commands work today and are executed promptly, showing promise for a more natural interface between user and NAS.

While it’s far from full AI orchestration, the groundwork is clearly there. The system also supports basic automation — for example, auto-import tasks triggered when an SD card is inserted can move, rename, or transcode files and even safely eject the card afterward. These are practical, time-saving tools that go beyond novelty.

ZettOS includes a growing App Center with one-click deployments of popular open-source tools like Jellyfin, Nextcloud, Image, and Home Assistant. Apps are containerized and installed quickly, with port forwarding handled automatically. While this is becoming common among modern NAS platforms, ZettOS executes it cleanly and without needing user intervention.

Some proprietary applications, such as Creator Studio and virtual machine hosting, are marked “coming soon” in the current builds, with roadmap estimates targeting mid-2025. It’s clear that while ZettOS is already usable, it is also a work in progress.

Notably, the AI document analysis and generative chat features currently require the desktop companion app for full functionality on the D6 model, with a locally downloaded AI model (1 click from the client software install, but still, this could be clearer in the online documentation!).

While the basic indexing and media analysis are handled on-device, more advanced interactions such as querying large document sets or generating context-specific answers appear to rely on the Windows or Mac client.

This distinction is critical: the more powerful Ultra models promise full offline AI, while the standard D6 offloads some computation. Transparency about how much AI is truly local versus partially remote will be key for user trust going forward.

Zettlab D6 Prototype Review – Conclusion and Verdict

Overall, the Zettlab D6 offers one of the most advanced AI software stacks seen in a consumer NAS at this level — even in its unfinished state. With real-time image recognition, semantic search, speech-to-text transcription, natural language controls, and media classification, it exceeds what many larger NAS brands have offered to date. There are still rough edges, missing features, and questions about long-term support, but what’s already functional is impressive. For early adopters and tinkerers, this is a promising glimpse of what local AI NAS could become. For others, it may be worth waiting to see how ZettOS matures over the next development cycle.

Important – This review is based on a pre-release prototype of the Zettlab D6, supplied ahead of the official crowdfunding campaign. While the unit demonstrated strong hardware build quality and successfully showcased many of the local AI features promoted by the brand, it’s important to note that this version may not fully reflect the final product that backers will receive. As development continues, both software and functionality are expected to evolve. A follow-up video will be produced closer to the end of the crowdfunding campaign to reassess the system, evaluate any updates, and determine how closely the final release aligns with early expectations.

PROS of the Zettlab AI NAS CONS of the Zettlab AI NAS
  • Real local AI processing (image recognition, OCR, transcription, semantic search) works without internet access on the D6.

  • Intuitive natural language commands for system control (e.g., adjust fan speed, create users, reboot) via built-in AI chat. But still very early days…

  • Excellent LCD display provides real-time system stats (CPU, RAM, IP, disk status) — rare at this price point.

  • Fast and responsive UI with good UX; even advanced features like RAID setup and AI search feel snappy and polished, if a little feature lite at this development stage

  • One-click SD card backup with programmable automation tasks (copy, transcode, eject) — ideal for photographers and creators.

  • Unique design and solid build quality

  • Fully populated app center, thanks to the community, ready packaged container deployment at 1 click

  • Clear product segmentation between D6 and Ultra models (better AI support, faster connectivity, PCIe expansion), allowing users to scale as needed – but could be clearer about the need for an included 1-click local AI client model on the client app requirements.

  • Not final software — many features are still in beta or marked “coming soon,” including VM hosting and first-party AI enhancements.

  • Partial dependency on desktop client for advanced AI functions (like document chat and LLM integration) on the D6 model.

  • Crowdfunding risks — as a pre-release, crowdfunded device, the final user experience may differ from the reviewed prototype.

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