This article covers QNAP NAS [TS-473A 単体 メモリー 8GB].

Overview

The QNAP TS-473A is a 4-bay tower NAS powered by an AMD Ryzen V1500B quad-core processor. It sits comfortably in the mid-to-high-end segment of the consumer and SMB NAS market, offering a strong balance of CPU performance, network throughput, and expandability. Out of the box, it comes with 8GB of DDR4 memory (expandable up to 64GB) and dual 2.5GbE ports, delivering roughly 2.5x the bandwidth of traditional gigabit connections. Two M.2 NVMe SSD slots enable Qtier auto-tiering and SSD caching, making it a versatile storage hub for demanding workloads.

Connectivity & Compatibility

The TS-473A features two 2.5GbE RJ45 ports on the rear, which auto-negotiate with existing gigabit switches and can reach full 2.5Gbps when paired with compatible network gear. Two PCIe Gen 3 x4 slots allow for expansion with 10GbE network cards or QM2 cards for additional M.2 storage. On the front panel, a USB 3.2 Gen 2 (10Gbps) port provides fast external backup connectivity. The four SATA 6Gb/s drive bays accept both 3.5-inch and 2.5-inch drives, giving you flexibility to mix HDDs and SSDs. The NAS supports both QTS and QuTS hero operating systems, letting you choose between the familiar EXT4-based environment or the more robust ZFS-based QuTS hero.

Product Info

Released in 2021, the QNAP TS-473A remains a capable performer in 2026. Its AMD Ryzen V1500B is a quad-core, eight-thread embedded processor that handles file serving, virtualization, and container workloads with ease. The standard warranty is two years (check with your retailer). In the box you'll find the NAS unit, Ethernet cable, power cable, HDD screws, M.2 heatsinks, drive tray keys, and a quick installation guide. It's widely available through Japan and other major retailers, with pricing typically around ¥300,000 depending on the seller and current market conditions.

Best Use Cases

Creative professionals handling large media files: Photographers and videographers working with RAW images or 4K footage will appreciate the 2.5GbE throughput and SSD caching. For multi-user 10GbE workflows, you'll need to add a PCIe network card. Small business file server and backup target: The TS-473A can serve as a central file repository for a small team, with built-in cloud sync and remote access via QNAP's QTS apps. If your budget is tight, consider a 2-bay entry model instead. * Home lab enthusiasts exploring virtualization and Docker: The Ryzen V1500B can run multiple lightweight VMs and containers simultaneously. Upgrading the RAM to 16GB or more is recommended for a smooth experience. For heavy virtualization, a Xeon or Core i-series based NAS would be a better fit.

Things to Consider

The TS-473A ships without any HDDs or SSDs, so factor storage costs into your total budget. The included 8GB RAM is likely single-channel; upgrading to a dual-channel configuration (16GB or more) will improve performance, especially for ZFS-based QuTS hero. To fully utilize the 2.5GbE ports, your network infrastructure (switch, PC NIC) must also support 2.5GbE. Otherwise, the NAS will fall back to gigabit speeds. If you're new to QNAP, be prepared for a learning curve — QTS is feature-rich but can be overwhelming compared to more streamlined alternatives like Synology DSM. ## FAQ
Q: What is the maximum HDD capacity supported? A: The TS-473A supports any standard 3.5-inch SATA HDD up to the largest currently available (22TB+). With four bays in RAID 5, you can achieve over 60TB of usable capacity. Q: Do I need special hardware to use 2.5GbE? A: Yes, both the NAS and your PC need 2.5GbE support. If your PC lacks a 2.5GbE port, you can add a USB 3.0 2.5GbE adapter or a PCIe 2.5GbE card. Q: Should I choose QTS or QuTS hero? A: Choose QuTS hero (ZFS) if data integrity, compression, and deduplication are critical — but plan for at least 16GB of RAM. For general file sharing and backups, standard QTS is perfectly adequate and more memory-efficient.

Product Disclosure (Amazon)

  • Manufacturer: QNAP(キューナップ)
  • Seller: EFI Global Store JP
  • Fulfilled by: EFI Global Store JP
  • ASIN: B092352NHY
  • Note: This article covers a manufacturer-made product based on Amazon listing details.