QNAP · Enterprise models
QNAP TDS-h2489FU R2
The QNAP TDS-h2489FU R2 is a 24-bay all-flash rackmount NAS built around two Intel Xeon Silver 4314 processors. Installed memory is 64 GB to 1 TB DDR4 ECC RDIMM by SKU, expandable to 1 TB. Networking is 4 x 2.5GbE, 2 x 25GbE SFP28. It also has 2 x M.2 2280 NVMe or SATA for SSD cache or fast storage.
- Drive bays
- 24
- Processor
- Dual Intel Xeon Silver 4314
- Memory
- 64 GB to 1 TB DDR4 ECC RDIMM by SKU
- Network
- 25GbE
Who it suits
All-flash storage suits work that needs fast response: virtual machines, databases and video editing. It costs more per terabyte than hard drives, so it is usually paired with a larger hard-drive NAS for backup and archive.
QNAP TDS-h2489FU R2 specifications
| Processor | 2 x Intel Xeon Silver 4314, 16-core/32-thread, up to 3.4 GHz |
|---|---|
| Memory installed | 64 GB to 1 TB DDR4 ECC RDIMM by SKU |
| Maximum memory | 1 TB (32 x 32 GB) |
| Drive bays | 24 x 2.5" U.2 NVMe (8 of them also SATA) |
| M.2 slots | 2 x M.2 2280 NVMe or SATA |
| Network ports | 4 x 2.5GbE, 2 x 25GbE SFP28 |
| USB ports | 4 x USB 3.2 Gen 1 |
| Expansion slots | 4 x PCIe Gen 4 (2 x16, 2 x8) |
| HDMI | none |
| Form factor | Rackmount 2U |
| Size (H × W × D) | 88.3 x 446.2 x 713.2 mm |
| Weight | 22.77 kg |
| Power consumption | 467.59 W operation |
| Power supply | 1200 W x 2 redundant |
| Warranty | 5 years |
| Versions sold | TDS-h2489FU-R2-4314-1T (1 TB), TDS-h2489FU-R2-4314-512G (512 GB), TDS-h2489FU-R2-4314-256G (256 GB), TDS-h2489FU-R2-4314-128G (128 GB), TDS-h2489FU-R2-4309Y-64G (64 GB) |
Specifications from QNAP's published data, checked October 2026. See the TDS-h2489FU R2 on QNAP's website. Confirm details before ordering.
Usable capacity by RAID level
How much space the TDS-h2489FU R2 gives with typical drive sizes.
| RAID level | 24 × 1 TB | 24 × 2 TB | 24 × 4 TB | 24 × 8 TB |
|---|---|---|---|---|
| RAID 6 | 22 TB | 44 TB | 88 TB | 176 TB |
Space is shown before formatting; expect about 10% less in use. Larger systems are often split into more than one RAID group.
What we do with it
- Storage
NAS supply and installation
A right-sized Synology, QNAP or Asustor unit with the drives, RAID level and network setup your office needs.
- Backup
Automatic backup setup
Scheduled backups of PCs, servers and shared folders to the NAS, with an off-site copy, so nobody has to remember to do it.
- Versions
Ransomware protection for NAS
Point-in-time snapshots and protected copies that let you roll a folder back to how it was before an attack or a mistake.
- Move
Data migration
We move your files, users and permissions from old servers, external drives or an ageing NAS.
Questions about the TDS-h2489FU R2
How much usable storage does the TDS-h2489FU R2 give?
It depends on the drives and the RAID level. With 24 × 2 TB drives in RAID 6 you get about 44 TB before formatting. The capacity table on this page shows other combinations.
Can the memory in the TDS-h2489FU R2 be upgraded?
Yes. It ships with 64 GB to 1 TB DDR4 ECC RDIMM by SKU and QNAP lists a maximum of 1 TB.
Does the TDS-h2489FU R2 have 10GbE?
Yes. Its network ports are 4 x 2.5GbE, 2 x 25GbE SFP28.
What warranty does the TDS-h2489FU R2 have?
QNAP lists a hardware warranty of 5 years for this model.
Do you supply the TDS-h2489FU R2 with drives and installation?
Yes. We supply it with compatible drives fitted, configured and tested, and can install it at your office. Ask for a quote on this page.
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