24-Bay Dual-Xeon U.2 NVMe All-Flash NAS
QNAP TDS-h2489FU-4309Y-64G All-Flash NAS
A 24-bay U.2 NVMe all-flash rackmount NAS with two Intel Xeon Silver 4309Y processors, 64 GB DDR4 ECC memory, dual 25GbE SFP28, four 2.5GbE ports and two PCIe Gen 4 slots.
A scalable entry configuration for the 24-bay all-flash platform
The QNAP TDS-h2489FU-4309Y-64G pairs the 24-bay U.2 NVMe platform with two eight-core Intel Xeon Silver processors and 64 GB ECC memory. It retains dual 25GbE networking, PCIe Gen 4 expansion and the stated QuTS hero deduplication, compression, snapshot, SnapSync and QSAL capabilities for virtualisation, hybrid-cloud access, and demanding backup and restoration workflows.
Key features and benefits
Twenty-four U.2-capable bays
Sixteen bays support U.2 NVMe SSDs and eight bays support U.2 NVMe or SATA SSDs.
Dual eight-core processors
Two Intel Xeon Silver 4309Y processors provide eight cores and 16 threads each, with a stated speed up to 3.6 GHz.
Scalable ECC memory
The system includes 64 GB RDIMM DDR4 ECC memory and lists a 1 TB maximum capacity.
25GbE plus 2.5GbE
Dual 25GbE SFP28 SmartNIC ports and four 2.5GbE ports support high-bandwidth connectivity.
QuTS hero storage services
Inline data reduction, snapshots, real-time SnapSync and QSAL support efficient all-flash data management.
PCIe and SAS expansion
PCIe Gen 4 slots and stated SAS enclosure expansion provide paths for networking and storage growth.
Who is this model best for?
A strong choice for
- U.2 NVMe all-flash storage
- Virtualisation and containerised applications
- High-bandwidth file access
- Backup and recovery operations
- Teams starting with 64 GB ECC memory
Consider another model if you need
- You require 3.5-inch HDD storage
- You need a larger installed-memory configuration
- You require a compact or short-depth chassis
Key specifications
- Processor
- 2 × Intel Xeon Silver 4309Y, 8-core/16-thread each, up to 3.6 GHz
- System memory
- 64 GB RDIMM DDR4 ECC (8 × 8 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 4309Y 8-core/16-thread processor, up to 3.6 GHz |
|---|---|
| CPU Architecture | 64-bit x86 |
| Encryption Engine | Supported (AES-NI) |
| System Memory | 64 GB RDIMM DDR4 ECC (8 x 8 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 | 2U 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-4309Y-64G
What is the QNAP TDS-h2489FU-4309Y-64G?
It is a 24-bay U.2 NVMe all-flash rackmount NAS with dual Xeon Silver 4309Y processors, 64 GB ECC memory and dual 25GbE networking.
Which processor does the TDS-h2489FU-4309Y-64G use?
The TDS-h2489FU-4309Y-64G uses two Intel Xeon Silver 4309Y processors, each with eight cores, 16 threads and a stated speed up to 3.6 GHz.
How much memory is included with the TDS-h2489FU-4309Y-64G?
It includes 64 GB RDIMM DDR4 ECC memory as eight 8 GB modules and supports a stated maximum of 1 TB.
How many drive bays does the TDS-h2489FU-4309Y-64G 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-4309Y-64G?
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-4309Y-64G?
It includes two 25GbE SFP28 SmartNIC ports and four 2.5GbE RJ45 ports.
What expansion options does the TDS-h2489FU-4309Y-64G provide?
It provides two M.2 2280 slots, two PCIe Gen 4 slots and stated support for SAS 12Gb/s expansion enclosures.
What form factor is the TDS-h2489FU-4309Y-64G?
It is a 2U rackmount all-flash NAS with redundant power supplies.
What are the dimensions of the TDS-h2489FU-4309Y-64G?
Its stated dimensions are 88.3 × 446.2 × 713.2 mm.
Does the TDS-h2489FU-4309Y-64G support virtualisation applications?
Yes. It supports virtualisation storage and hosting virtual machines and containerised applications.
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.
