A same-day spec leak has revealed the internal hardware of Xiaomi's first-ever network-attached storage device, the Xiaomi Smart Storage, just three days before the product opens for crowdfunding in China. The leak, published today by Notebookcheck and sourced from Weibo account 6GHz, gives prospective buyers their clearest look yet at the hardware inside a device Xiaomi is positioning as a family storage hub — and surfaces a set of technical and data-privacy questions that matter before committing to a crowdfunding purchase.

The crowdfunding campaign opens July 1 on Xiaomi Mall and Xiaomi Youpin, with the entry-level 4 TB dual-bay model priced at ¥2,299, approximately $338. The window closes July 8. If the funding target is not met, the device does not go into production at the crowdfunding price; units would then sell at the higher retail price of ¥3,499, roughly $514.

What the Realtek RTD1619B Means for Performance

The engineering sample of the Xiaomi Smart Storage ran on a Realtek RTD1619B processor, according to the leak. That is a quad-core ARM Cortex-A55 chip clocked at up to 1.7 GHz, paired in the sample with 2 GB of DDR3L RAM and 8 GB of eMMC flash storage for the operating system and firmware. The same SoC powers Synology's DiskStation DS223j, Synology's current entry-level two-bay model. What that parallel tells a technically informed buyer is this: the RTD1619B is a proven, NAS-specific system-on-chip with a known performance envelope. It handles routine file serving, smartphone backup, and media streaming without difficulty. It also carries a hardware video decoder capable of H.265 at 4K60fps and AV1 at 4K60fps — the codec formats most relevant to a home media library in 2026.

What the RTD1619B cannot do well is run containerized workloads. The chip's ARM architecture means most Docker images built for x86 processors require cross-compilation to run, and many will not run at all. Synology's own DS223j — the device this SoC is most directly comparable to — does not support Docker. Xiaomi has not confirmed Docker support for the Smart Storage, and sources covering the product note explicitly that the device is positioned as a plug-and-play consumer appliance, not a flexible enthusiast platform. Users who intend to run Plex Media Server natively, self-host applications in containers, or extend the device's function beyond its bundled software should treat Docker support as an open question rather than an assumption.

The 8 GB of eMMC is dedicated to the HyperOS-based operating system rather than user storage. User data goes to the SATA drives in the two bays; the device supports both 2.5-inch and 3.5-inch SATA hard drives and SSDs, with a maximum combined capacity of 40 TB across both bays.

Why Xiaomi Upgraded from 1 GbE to 2.5 GbE for the Retail Unit

One of the most meaningful discrepancies between the leaked engineering sample and the confirmed retail specification is the network port. The engineering unit reportedly shipped with a standard 1 Gigabit Ethernet port. The confirmed retail spec calls for a 2.5 GbE port — a network standard introduced under IEEE 802.3bz in 2016 that delivers 2.5 times the throughput of 1 GbE over existing Cat5e cabling. For home NAS use, the practical difference is significant. Transferring a 100 GB photo library from a phone to a 1 GbE NAS takes roughly 14 minutes at the standard's theoretical ceiling; across a 2.5 GbE link, that drops to under six minutes. Large video files and multi-device simultaneous backup are the scenarios where 2.5 GbE transitions from a spec-sheet talking point to a usable speed gain.

To realize that gain, a buyer also needs a router or switch with a 2.5 GbE port — hardware that is now broadly available at consumer price points but not universal. A home with only 1 GbE infrastructure will negotiate down to 1 GbE regardless of the NAS port. The engineering-to-retail upgrade signals that Xiaomi is targeting buyers who already have, or plan to build, multi-gigabit home networks — not users who plan to run the device off an aging gigabit router.

The confirmed retail connectivity also includes a USB-A 3.0 port for direct-attached storage and an HDMI 1.4 output. The RTD1619B's Mali-G57 GPU and hardware video decoder make the HDMI output functional for direct media playback, giving the device secondary capability as a home media player alongside its storage role.

What the Hikvision Partnership and Chinese Law Mean for Your Data

Xiaomi has announced that the Smart Storage is being co-manufactured with Hangzhou Hikvision Digital Technology, a surveillance and security hardware company. Before proceeding to the spec comparison, that partnership warrants scrutiny.

Hikvision is the world's largest manufacturer of video surveillance equipment and a state-controlled company: China Electronics Technology Group, a state-owned enterprise, holds approximately 42% of Hikvision, according to security researchers and legal analysts. The United States government has treated that ownership as a national security concern. The Federal Communications Commission placed Hikvision on its Covered List in November 2022 under the Secure Equipment Act, prohibiting new equipment authorizations for its products for use in public safety, critical infrastructure, and national security contexts. Section 889 of the National Defense Authorization Act separately bars federal agencies and contractors from purchasing Hikvision equipment. A U.S. appeals court upheld the FCC's authority to impose the ban in April 2024. Hikvision has denied being a national security threat and continues to challenge restrictions in U.S. courts.

Separately from the Hikvision question, Xiaomi itself is headquartered in Beijing and is subject to Chinese law. As Wikipedia's Xiaomi entry documents, Xiaomi is obligated to share data with the Chinese government under China's National Intelligence Law (2017) and Cybersecurity Law (2017). Article 7 of the National Intelligence Law requires that "all organizations and citizens shall support, assist, and cooperate with national intelligence efforts in accordance with law." China's Cybersecurity Law (2017) and Data Security Law (2021) further authorize government inspections of networks and government access to stored data.

What this means for a buyer of the Smart Storage is specific and worth understanding before the crowdfunding window opens. A NAS device is not a peripheral — it is a centralized repository for a household's files, photos, contacts, financial documents, and device backups. The Xiaomi Smart Storage connects to Xiaomi's HyperOS cloud services and is managed through the Xiaomi Smart Storage app on iOS and Android. Xiaomi's own transparency reports confirm the company receives and responds to legal requests from Chinese authorities for user data. No independent security audit of the Smart Storage hardware exists; the product has not shipped yet. Xiaomi states in its transparency documentation that it does not provide governments direct access to customer data or backdoors in its products, and the Chinese government has stated publicly that it does not require companies to collect data overseas in violation of local laws. Neither statement eliminates the structural legal obligation that operates at the jurisdictional level.

Readers who store sensitive professional or personal data and require clear jurisdictional separation from Chinese authorities should factor this into the decision before July 1. Practical mitigation options for those who proceed include network segmentation (placing the NAS on a dedicated VLAN isolated from other home devices), disabling cloud remote-access features in favor of local-only access, and auditing firmware update sources.

Xiaomi Smart Storage vs. Synology: What the Shared SoC Does Not Make Equal

The RTD1619B is the hardware similarity between the Xiaomi Smart Storage and the Synology DS223j. Everything else differs. Synology's DSM operating system has been under active development for more than a decade and carries a mature third-party app ecosystem, documented security patch cadence, and established enterprise backup features. Xiaomi's HyperOS-based NAS operating system is launching for the first time on July 1 with no track record. The Smart Storage app is already live on iOS and Android — suggesting the software foundation is further along than a pure Day 1 launch — but firmware maturity, long-term update commitment, and third-party developer support for Xiaomi's NAS platform are unknown quantities.

The Synology DS223j retails at approximately $178 as a diskless unit, meaning a buyer supplies their own drives and pays separately for storage. Xiaomi's Smart Storage ships with drives pre-installed at ¥2,299 (~$338) for the 4 TB configuration during the crowdfunding window. Direct price comparison requires accounting for both the drive cost embedded in Xiaomi's figure and the crowdfunding discount against Xiaomi's own retail price of ¥3,499 (~$514).

Is the Xiaomi Smart Storage Available Outside China?

International availability has not been confirmed. The July 1–8 crowdfunding campaign runs exclusively on Xiaomi Mall and Xiaomi Youpin, both China-market platforms. Xiaomi has a history of eventually expanding crowdfunded products globally, but no timeline or market list has been announced for the Smart Storage. Buyers outside China who wish to participate in the crowdfunding window will need to use a third-party purchasing service, which introduces its own warranty and support complications.

The device runs within Xiaomi's HyperOS ecosystem and is designed to integrate with Xiaomi smartphones, tablets, televisions, and PCs. The companion app is available on the App Store and Google Play, and Xiaomi has confirmed compatibility with Android, iOS, Windows, macOS, and Linux — suggesting eventual international distribution is part of the plan, even if the launch is China-exclusive.

Frequently Asked Questions

Does the Xiaomi Smart Storage NAS support Docker?

Docker support has not been confirmed by Xiaomi. The device runs on an ARM-based Realtek RTD1619B processor and is designed as a plug-and-play consumer appliance rather than an enthusiast platform. The Synology DS223j — which uses the same processor — does not support Docker either. Users who need containerized workloads should consider Intel-processor NAS devices from Synology, QNAP, or Ugreen.

How does the Xiaomi Smart Storage compare to Synology's DS223j?

Both devices use the Realtek RTD1619B quad-core ARM Cortex-A55 processor, making raw compute performance comparable. The key differences are software maturity (Synology DSM has a decade-long track record; Xiaomi's HyperOS NAS OS is launching for the first time), ecosystem (Synology has an extensive third-party app library; Xiaomi's is untested), and price structure (the DS223j retails around $178 diskless; Xiaomi's 4 TB pre-loaded model opens at ¥2,299, roughly $338, during crowdfunding, with drives included).

What are the data privacy risks of a Xiaomi NAS in my home?

As a company headquartered in China, Xiaomi is subject to China's National Intelligence Law (2017), which requires all organizations and citizens to cooperate with national intelligence efforts, and the Cybersecurity Law (2017), which authorizes government access to stored data. These obligations apply regardless of Xiaomi's stated privacy policy or the location of individual servers. A NAS stores the full contents of a household's digital life. No independent security audit of the Smart Storage hardware exists yet. Xiaomi's transparency reports confirm the company responds to legal requests from Chinese authorities. The company and the Chinese government have both stated that no unauthorized data access occurs. Readers in jurisdictions with strict data-residency requirements, or those storing sensitive professional data, should factor this legal framework into their decision before the July 1 crowdfunding window opens.

Will the Xiaomi Smart Storage be available internationally?

No international availability has been confirmed. The July 1–8 crowdfunding campaign runs exclusively on China-market platforms. Xiaomi has a track record of expanding crowdfunded products globally but has not announced a timeline or market list for the Smart Storage.