24-Bay Dual-Xeon All-Flash NAS
QNAP TDS-h2489FU-4314-512G All-Flash NAS
A 24-bay U.2 NVMe all-flash NAS with two Intel Xeon Silver 4314 16-core processors, 512 GB DDR4 ECC memory, dual 25GbE SFP28, four 2.5GbE ports and two PCIe Gen 4 slots.
Dual-processor all-flash storage for intensive data-centre workloads
The QNAP TDS-h2489FU-4314-512G combines 24 U.2 NVMe-capable bays with two Intel Xeon Silver processors, 512 GB ECC memory and dual 25GbE networking. The ZFS-based QuTS hero operating system, inline deduplication and compression, snapshots, real-time SnapSync, QSAL, virtualisation support and SAS expansion are positioned for latency-sensitive applications, virtualisation and mission-critical backup and recovery.
Key features and benefits
Twenty-four all-flash bays
The layout combines 16 U.2 NVMe bays with eight bays supporting U.2 NVMe or SATA SSDs.
Dual Xeon Silver processors
Two 16-core, 32-thread Intel Xeon Silver 4314 processors support intensive storage and application workloads.
512 GB ECC memory
The installed 512 GB RDIMM DDR4 ECC configuration can scale to the stated 1 TB maximum.
25GbE and 2.5GbE networking
Dual 25GbE SFP28 SmartNIC ports and four 2.5GbE RJ45 ports support high-bandwidth access.
QuTS hero data services
Inline deduplication, compression, snapshots, real-time SnapSync and QSAL support data reduction and protection.
PCIe Gen 4 expansion
Two PCIe Gen 4 slots support compatible networking, QM2 and Fibre Channel cards.
Who is this model best for?
A strong choice for
- U.2 NVMe all-flash storage
- Virtualisation and virtual-machine hosting
- Latency-sensitive applications
- High-bandwidth backup and restoration
- Data-centre deployments requiring redundant power
Consider another model if you need
- You require 3.5-inch hard-drive bays
- You need a compact or short-depth chassis
- You require a lower installed-memory configuration
Key specifications
- Processor
- 2 × Intel Xeon Silver 4314, 16-core/32-thread each, up to 3.4 GHz
- System memory
- 512 GB RDIMM DDR4 ECC (16 × 32 GB)
- Maximum memory
- 1 TB (32 × 32 GB)
- Drive bays
- 24 total: 16 × U.2 NVMe + 8 × U.2 NVMe/SATA
- Drive compatibility
- 2.5-inch U.2 NVMe PCIe Gen 4 x4 SSD; 2.5-inch SATA SSD in bays 17–24
- M.2 slots
- 2 × M.2 2280 NVMe/SATA
- Networking
- 2 × 25GbE SFP28 SmartNIC; 4 × 2.5GbE RJ45
- Expansion
- 2 × PCIe Gen 4 slots
- Dimensions
- 88.3 × 446.2 × 713.2 mm
- Power supply
- 1200W × 2, 100–240Vac
Full technical specifications
Processor, memory and storage
| CPU | 2 x Intel® Xeon® Silver 4314 16-core/32-thread processor, up to 3.4 GHz |
|---|---|
| CPU Architecture | 64-bit x86 |
| Encryption Engine | Supported (AES-NI) |
| System Memory | 512 GB RDIMM DDR4 ECC (16 x 32 GB) |
| Maximum Memory | 1 TB (32 x 32 GB) |
| Memory Slot | 32 x RDIMM DDR4 ECC (16 x slots per socket) |
| Flash Memory | 5GB (Dual boot OS protection) |
| Drive Bay | 24 (16 x 2.5-inch U.2 PCIe NVMe + 8 x 2.5-inch U.2 PCIe NVMe/SATA 6Gbps) The system is shipped without SSD. |
| Drive Compatibility | 2.5-inch bays: 2.5-inch SATA solid state drives (#17-24) 2.5-inch U.2 NVMe PCIe Gen4 x4 solid state drives |
| Hot-swappable | Supported (Not supported M.2 SSD) |
| M.2 Slot | 2 Slot 1: M.2 2280 NVMe PCIe Gen 3 x4 or SATA 6Gb/s Slot 2: M.2 2280 NVMe PCIe Gen 3 x2 or SATA 6Gb/s Compatible with NVMe SSD PCIe Gen 3 and above. Please refer to for compatibility. |
| SSD Cache Acceleration Support | Supported |
| SR-IOV | Supported |
| Max. Number of Concurrent Connections (CIFS) - with Max. Memory | 10,000 |
Network, ports and expansion
| 2.5 Gigabit Ethernet Port (2.5G/1G/100M) | 4 (2.5G/1G/100M/10M) |
|---|---|
| 25 Gigabit Ethernet Port | 2 x 25GbE SFP28 SmartNIC port |
| Wake on LAN (WOL) | Supported Only the 2.5GbE port |
| Jumbo Frame | Supported |
| PCIe Slot | 2 Slot 1: PCIe Gen4 x16 Slot 2: PCIe Gen4 x8 *Slot 2 is preinstalled with a 25GbE network adapter. **Slot 1 provides the width of PCIe Gen4 x16 when Slot 2 is not in use, and provides the width of PCIe Gen4 x8 when Slot 2 is in use. Card dimensions for PCIe slot 1:225 x 68.9 x 39.08 mm / 8.86 x 2.71 x 1.54 inches. Card dimensions for PCIe slot 2:225 x 68.9 x 18.76 mm / 8.86 x 2.71 x 0.74 inches. Wider cards can be installed if the next PCIe slot will not be used. |
| USB 3.2 Gen 1 port | 4 |
Physical, environmental and power
| Form Factor | Rackmount |
|---|---|
| LED Indicators | SSD, Status, Power, Fan, Temperaure, Power Module Status, Device Name, IP Address |
| Buttons | Power, Reset, OLED |
| Dimensions (HxWxD) | 88.3 × 446.2 × 713.2 mm |
| Weight (Net) | 22.77 kg |
| Weight (Gross) | 27.55 kg |
| Operating Temperature | 0 - 35°C (32°F - 95°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 | 1200W PSU(x2), 100-240Vac Max Wattage: 1200W@200-240Vac 1000W@100-127Vac |
| Power Consumption: Operating Mode, Typical | 467.59 W Tested with drives fully populated. |
| Fan | 6 x 60mm, 12VDC |
| System Warning | Buzzer |
Frequently asked questions about the TDS-h2489FU-4314-512G
What is the QNAP TDS-h2489FU-4314-512G?
It is a 24-bay U.2 NVMe all-flash rackmount NAS with dual Xeon Silver processors, 512 GB ECC memory and dual 25GbE networking.
Which processor does the TDS-h2489FU-4314-512G use?
The TDS-h2489FU-4314-512G uses two Intel Xeon Silver 4314 processors, each with 16 cores, 32 threads and a stated speed up to 3.4 GHz.
How much memory is included with the TDS-h2489FU-4314-512G?
The TDS-h2489FU-4314-512G includes 512 GB RDIMM DDR4 ECC memory as sixteen 32 GB modules and supports a stated maximum of 1 TB.
How many drive bays does the TDS-h2489FU-4314-512G have?
It has 24 bays: 16 for U.2 NVMe SSDs and eight for U.2 NVMe or SATA SSDs.
Which drive types are supported by the TDS-h2489FU-4314-512G?
It supports 2.5-inch U.2 NVMe PCIe Gen 4 x4 SSDs, with 2.5-inch SATA SSD support in bays 17–24.
Which network ports are built into the TDS-h2489FU-4314-512G?
It includes two 25GbE SFP28 SmartNIC ports and four 2.5GbE RJ45 ports.
What expansion options does the TDS-h2489FU-4314-512G provide?
It provides two M.2 2280 slots and two PCIe Gen 4 slots; PCIe slot 2 is preinstalled with the 25GbE network adapter.
What form factor is the TDS-h2489FU-4314-512G?
It is a rackmount all-flash NAS with redundant power supplies.
What are the dimensions of the TDS-h2489FU-4314-512G?
Its stated dimensions are 88.3 × 446.2 × 713.2 mm.
Which operating system does the TDS-h2489FU-4314-512G use?
It uses the ZFS-based QuTS hero operating system.
Important information
The system is shipped without SSDs.
M.2 SSDs are not hot-swappable.
PCIe slot 2 is preinstalled with the 25GbE network adapter.
The stated 467.59 W operating figure was tested with drives fully populated.
