Overview:
Powered by an AMD Ryzen™ 7000 series 6-core processor and DDR5 memory, the TVS-hx77AX series combines ZFS data integrity with upcoming Qtier storage tiering technology to redefine performance standards for professional video collaboration and enterprise virtualization.
Zen Architecture & DDR5
AMD Ryzen™ 7000 series 6-core processor with up to 192 GB DDR5 memory (optional ECC), enabling heavy multitasking and high-load VM applications.
U.2 SSD Acceleration
Hybrid drive bays with U.2 PCIe Gen 4 NVMe SSD support, delivering massive bandwidth for virtualization, databases, and high-speed video workflows.
NFS over RDMA
Enable NFS over RDMA to bypass CPU overhead, transforming the NAS into high-throughput, low-latency direct storage for AI training and inference workloads.
10GbE & 2.5GbE
Built-in dual 10GBASE-T and dual 2.5GbE network ports to accelerate large file sharing and data-intensive transfers.
PCIe Gen 4 Expansion
Three PCIe Gen 4 slots for installing 25GbE NICs or discrete GPUs (NVIDIA RTX™ series).
Virtualization
Support for virtual machines and containerized applications, providing centralized storage, backup, disaster recovery, and storage expansion.
Features:
AMD Ryzen™ 7000 & DDR5: Driving Multitasking Limits
Featuring the latest Zen 4 architecture AMD Ryzen™ 5 / 7 PRO 7000 series processors, delivering significant performance gains. Combined with expandable DDR5 memory up to 192 GB, it effortlessly handles demanding workloads including multiple virtual machines (VMs), containers, and high-resolution video transcoding.
Fusing U.2 NVMe Speed with HDD Capacity — Qtier Smart Tiering Coming Soon
Maximize storage efficiency without compromise. The TVS-hx77AX features dedicated 2.5-inch U.2 NVMe PCIe Gen 4 SSD slots for ultra-low-latency access. With the upcoming QuTS hero h6.0, Qtier storage tiering will be supported, allowing you to manually move hot data to high-speed SSDs while cold data remains on HDDs — achieving the perfect balance between performance and cost.
- TVS-h877AX: 2 x U.2 NVMe PCIe 4.0 x4 slots
- TVS-h1277AX: 4 x U.2 NVMe PCIe 4.0 x2 slots
- TVS-h1677AX: 4 x U.2 NVMe PCIe 4.0 x2 slots
Powerful AMD Ryzen™ PRO 7000 Series processor with 6 cores
The TVS-h877AX features an AMD Ryzen™ 5 PRO 7645 processor (Zen 4 architecture), delivering exceptional multitasking performance and energy efficiency. Combined with 64 GB DDR5 memory and 3 x 25GbE SmartNICs, it achieves outstanding sequential throughput and random IOPS under high-load enterprise workloads.
CPU
AMD Ryzen™ 5 PRO 7645 6-core/12-thread processor (Zen 4, up to 5.1 GHz)
Memory
64 GB DDR5-4800 (32 GB × 2), supports up to 192 GB (optional ECC supported)
U.2 NVMe SSD Transfer Speed
Transfer Performance
| 5 x 25GbE SMB Sequential Throughput (1M) |
Read
12172 MB/s
|
Write
11106 MB/s
|
| 5 x 25GbE iSCSI Random IOPS (4K) |
Read
1253234 IOPS
|
Write
791094 IOPS
|
Tested by QNAP Labs. Actual results may vary depending on the environment.
Test Environment:
NAS: TVS-h877AX (AMD Ryzen™ 5 PRO 7645), memory upgraded to 64GB DDR5-4800 (32GB×2), with 3 x QXG-25G2SF-CX6
OS: QuTS hero h5.2.7.3232
Volume: Samsung 4 x PM9A3 1.92TB U.2 NVMe SSD, 8 x Samsung 870 EVO 1TB SATA SSD, RAID 5, Thick Volume
Client PC: 5 x Intel Core i3-8100, 4G, QNAP QXG-25G2SF-CX4, Windows Server 2019 + 1 x Intel Core i7-7700, 32G
IOmeter: RAM×4, 30s warm-up, 3-min continuous read/write, 1 worker, 32-outstanding
PCIe Gen 4 Expandability for Future-Proof Upgrades
The TVS-hx77AX features 3 PCIe Gen 4 slots, providing flexible hardware upgrades to meet growing business needs. Install 25GbE network cards for higher bandwidth, or add NVIDIA RTX™ 4000/5000 series graphics cards to boost AI computing and video processing capabilities.
*Note: When Slot 1 is not in use, Slot 2 provides PCIe Gen 4 x8 bandwidth; when Slot 1 is in use, Slot 2 provides PCIe Gen 4 x4 bandwidth.
Slot 1: PCIe Gen 4 x4
Slot 2: PCIe Gen 4 x8 (or x4)*
Slot 3: PCIe Gen 4 x4
The Ultimate Virtualization Workstation with GPU Passthrough
TVS-h877AX is a powerful platform for virtualization. Equipped with a high-frequency AMD Ryzen™ processor and supporting up to 192 GB DDR5 memory, it runs multiple virtual machines and containers simultaneously without performance lag. By installing a discrete graphics card (up to 200W) in a PCIe Gen 4 slot, GPU passthrough can be enabled for virtual machines, dramatically boosting graphics performance for design, engineering, or AI analytics workloads.
VM
Run Windows®, Linux®, UNIX®, and Android™ virtual machines directly on the NAS via Virtualization Station.
Container
Run LXD and Docker® containers for lightweight virtualization and microservices application development.
SR-IOV
Install a compatible PCIe network card (e.g., QXG-25G2SF-BCM, QXG25G2SF-E810) to enable SR-IOV for improved network resource allocation to virtual machines.
GPU
Directly assign a PCIe GPU to a virtual machine to meet the demands of tasks requiring high graphics computing power.
High Availability (HA) with Dual-NAS Failover
Prevent unexpected downtime and data loss.
Note: High Availability (HA) will be supported starting with QuTS hero h6.

Build an HA cluster using two TVS-h877AX units — one as the active server and the other as the passive server. When the active server encounters an unexpected failure, the passive server automatically takes over, providing instant protection. This ensures uninterrupted storage services and system availability.
Easy management and monitoring
Use the High Availability Manager app to easily configure, remove, or rebuild clusters.
Guaranteed data consistency
Real-time data sync between active and passive servers minimizes the risk of data loss (RPO).
Ensured continuity of critical business
The passive server takes over within 1 minute if the active server fails (RTO < 60 secs).
AI-powered enterprise search
| Build a smart knowledge hub with RAG Search |
TVS-h877AX integrates the Qsirch search engine with RAG technology, cloud-based large language models (LLMs), and generative AI. This enables precise natural language searches across vast NAS file content, while generating summaries and actionable insights. |
| Full-text search |
Searches for files based on file name, content, title, metadata, email title and body text, file path, and more. |
| Document preview |
Preview the content of unopened documents, view keyword-relevant paragraphs, and check out a few relevant sentences related to the file subject. |
| Image search |
Search for images by color or object. AI OCR recognizes and enables capturing text from images. |
| At-a-glance file distribution |
Stay informed of storage utilization and distribution of data and files stored on the TVS-h877AX via charts and analytics. |
5-year warranty as standard
The TVS-h877AX is backed by a 5-year warranty at no extra cost – providing your business organization with greater peace of mind.
Hardware Specifications:
| |
TVS-h877AX-R5-16G |
| CPU |
AMD Ryzen™ 5 7000 series 6-core/12-thread processor, burst up to 5.1 GHz
AMD Radeon Graphics
|
| CPU Architecture |
64-bit x86 |
| Graphic Processors |
AMD Radeon™ Graphics |
| Floating Point Unit |
|
| Encryption Engine |
(AES-NI) |
| Hardware-accelerated Transcoding |
|
| System Memory |
16 GB UDIMM DDR5 |
| Maximum Memory |
192 GB (4 x 48 GB) |
| Memory Slot |
4 x UDIMM DDR5 Support optional ECC memory
For dual-DIMM configurations, you must use a pair of identical DDR5 modules.
|
| Flash Memory |
5GB (Dual boot OS protection) |
| Drive Bay |
6 x 3.5-inch SATA 6Gb/s, 3Gb/s + 2 x 2.5-inch U.2 NVMe Ge4 x4 slots |
| Drive Compatibility |
3.5-inch bays: 3.5-inch SATA hard disk drives 2.5-inch SATA solid state drives
2.5-inch bays: 2.5-inch U.2 solid state drives
U.2 NVMe SSDs are only compatible with PCIe Gen4 and PCIe Gen5 SSDs.
|
| Hot-swappable |
To enable hot-swap functionality of U.2 SSDs after system startup, the U.2 SSD must be installed before powering on the system.
|
| SSD Cache Acceleration Support |
|
| GPU pass-through |
|
| 2.5 Gigabit Ethernet Port (2.5G/1G/100M) |
2 (2.5G/1G/100M/10M) |
| 10 Gigabit Ethernet Port |
2 x 10GBASE-T (10G/5G/2.5G/1G/100M) |
| 25 Gigabit Ethernet Port |
Optional via an adapter |
| Wake on LAN (WOL) |
|
| Jumbo Frame |
|
| PCIe Slot |
3 Slot 1: Gen 4 x8 or Gen 4 x4* Slot 2: Gen 4 x4 Slot 3: Gen 4 x4
*Slot 1 provides the width of PCIe Gen4 x8 when Slot 2 is not in use, and provides the width of PCIe Gen4 x4 when Slot 2 is in use. Card dimensions for PCIe slot 1:268 x 112 x 40.64(dual slot) mm / 10.5 x 4.4 x 1.6 inches Card dimensions for PCIe slot 2:150 x 68.9 x 18.76 mm / 5.90 x 2.71 x 0.74 inches. Card dimensions for PCIe slot 3:150 x 68.9 x 18.76 mm / 5.90 x 2.71 x 0.74 inches. Wider cards can be installed if the next PCIe slot will not be used.
|
| USB 2.0 Port |
2 |
| USB 3.2 Gen 2 (10Gbps) Port |
2 x Type-C USB 3.2 Gen 2 10Gbps |
| HDMI™ Output |
1, HDMI™ 1.4b (up to 4096 x 2160 @ 30Hz) |
| Form Factor |
Tower |
| LED Indicators |
Power Status, HDD 1-6, U.2 SSD 1-2, Status, LAN, storage expansion port status |
| Buttons |
Power, Reset, USB Auto Copy |
| Dimensions (HxWxD) |
8.86 × 11.53 × 12.59 inch |
| Weight (Net) |
19.58 lbs |
| Weight (Gross) |
24.69 lbs |
| Operating Temperature |
0 - 40°C (32°F - 104°F) |
| Storage Temperature |
-20 - 70°C (-4°F - 158°F) |
| Relative Humidity |
5-95% RH non-condensing, wet bulb: 27°C (80.6°F) |
| Power Supply Unit |
500W(x1), 100-240V
1 x 8 (6+2)-pin PCI-e cable
|
| Power Consumption: Operating Mode, Typical |
105.12 W
Tested with drives fully populated.
|
| Fan |
System fan: 2 x 80mm, 12VDC CPU fan: 2 x 60 mm, 12V DC |
| System Warning |
Buzzer |
| Standard Warranty |
5 Years |
Note: Use only QNAP memory modules to maintain system performance and stability. For NAS devices with more than one memory slot, use QNAP modules with identical specifications and refer to the hardware user manual to install compatible QNAP memory modules.
Warning: Using unsupported modules may degrade performance, cause errors, or prevent the operating system from starting.
QNAP reserves the right to replace partial parts or accessories if the original is no longer available from its manufacturer/supplier. Any replacement would be fully tested and verified to meet strict compatibility and stability guidelines and will deliver identical performance to the original.
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Designs and specifications are subject to change without notice.