$ 10,999.00

QNAP TDS-h2489FU-4309Y-64G-US  - NVMe all-flash ZFS storage, featuring the innovative dual 2 x Intel® Xeon® Silver 4309Y 8-core/16-thread processor, up to 3.6 GHz  64-and 64 GB RDIMM DDR4 ECC (8 x 8 GB), 32 x RDIMM DDR4 ECC (16 x slots per socket) supported with 24 U.2 NVMe Gen 4 x4 SSD bays, the QNAP’s flagship NVMe all-flash storage TDS-h2489FU delivers high random read/write IOPS for tackling I/O-intensive and latency-sensitive applications. (Supports QuTS hero or QTS operating system) the TDS-h2489FU meets your requirements for modern data centers, virtualization, and mission-critical backup/restore tasks.

Product Features

  • System: NVMe all-flash ZFS storage (Supports QuTS hero or QTS operating system)
  • Processor: Dual 2 x Intel® Xeon® Silver 4309Y 8-core/16-thread processor, up to 3.6 GHz
  • Connectivity Ports: 4 (2.5G/1G/100M/10M) - 2 x 25GbE SFP28 SmartNIC port
  • 10 Gigabit Ethernet Port: 2 x 10GBASE-T (10G/1G)
  • M.2 SSD Slot: 2 x M.2 2280 NVMe PCIe Gen 3 x2 or SATA 6Gb/s
  • Drive Bay: 24 x 2.5-inch U.2 & U.3 SSD
  • Model: Diskless (No drives)

Sku: TDS-h2489FU-4309Y-64G
MPN: TDS-h2489FU-4309Y-64G-US


CPU 2 x Intel® Xeon® Silver 4309Y 8-core/16-thread processor, up to 3.6 GHz
CPU Architecture 64-bit x86
Encryption Engine  (AES-NI)
System Memory 64 GB RDIMM DDR4 ECC (8 x 8 GB)
Memory Slot 32 x RDIMM DDR4 ECC (16 x slots per socket)
Flash Memory 5GB (Dual boot OS protection)
Drive Bay 24 x 2.5-inch
The system is shipped without SSD.
For the SSD compatibility list, please visit https://www.qnap.com/compatibility/
Drive Compatibility 2.5-inch bays:
2.5-inch SATA hard disk drives (#17-24)
2.5-inch SATA solid state drives (#17-24)
2.5-inch U.2 NVMe PCIe Gen4 x4 solid state drives
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
SSD Cache Acceleration Support
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)
Only the 2.5GbE port
Jumbo Frame
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.
USB 3.2 Gen 1 port 4
Form Factor Rackmount
LED Indicators SSD, Status, Power, Fan, Temperaure, Power Module Status, Device Name, IP Address
Buttons Power, Reset, OLED
Dimensions (HxWxD) 3.48 × 17.57 × 28.08 inch
Weight (Net) 46.98 lbs
Weight (Gross) 60.85 lbs
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:
Power Consumption: Operating Mode, Typical 467.59 W
Tested with drives fully populated.
Fan 6 x 60mm, 12VDC
System Warning Buzzer
Max. Number of Concurrent Connections (CIFS) - with Max. Memory 10,000

 Featuring dual Intel® Xeon® Silver 4300 processors and 24 U.2 NVMe Gen 4 x4 SSD bays, the QNAP’s flagship NVMe all-flash storage TDS-h2489FU delivers high random read/write IOPS for tackling I/O-intensive and latency-sensitive applications. The ZFS-based QuTS hero operating system supports inline data deduplication and compression for reducing I/O and SSD storage consumption, which significantly extends SSD lifespan with a higher price-performance ratio for all-flash storage arrays. Coupled with near-unlimited snapshots, real-time SnapSync, and QSAL (QNAP SSD Antiwear Leveling), the TDS-h2489FU meets your requirements for modern data centers, virtualization, and mission-critical backup/restore tasks.

Optimized SSD performance and lifespan

Inline data deduplication and compression, Pool Over-provisioning, and TRIM maximize SSD performance and lifespan.

25GbE & 2.5GbE connectivity

Dual 25GbE SFP28 and quad 2.5GbE RJ45 high-speed connectivity accelerates virtualization, intensive file access, and large backup/restoration tasks.

High-speed PCIe Gen 4 slots

Allows for installing 10/25/40/100GbE adapters, QM2 cards, or Fibre Channel cards to increase application performance.

Virtualization applications

Supports virtualization storage and hosting virtual machines and containerized apps.


Cloud storage gateway

Realizes hybrid cloud applications by working with the cache space reserved on NAS to ensure low-latency data access to the cloud.

Flexible storage expansion

Scalable design to grow with your business by connecting SAS 12Gb/s expansion enclosures for up to petabyte-scale storage capacity.

Build high-performance storage infrastructure for IOPS-demanding applications


Eliminates storage bottlenecks for unstructured data and I/O intensive workloads; ideal for server virtualization and virtual desktop infrastructure (VDI).

Data Centers

Delivers ultra-low latency and high IOPS performance, providing response times within microseconds for data centers that host significant business-critical systems and data.

Media and Entertainment (M&E) production

Satisfies smooth 4K/8K media streaming and post-production, empowering multimedia workflows with faster data transfer, access, and backup for boosted efficiency.

Multiplied computing power with dual Intel Xeon Scalable processors and 8-channel DDR4 ECC memory

The TDS-h2489FU is powered by dual Intel® Xeon® Silver 4309Y 8-cores 2.8 GHz (up to 3.6 GHz) or Intel® Xeon® Silver 4314 16-cores 2.4 GHz (up to 3.4 GHz) processors, which are based on the new 3rd Gen Intel® Xeon® Scalable processors architecture that increases core performance, memory, I/O bandwidth, and features built-in workload and service acceleration. With 8-channel modules and 32 Long-DIMM slots, the TDS-h2489FU’s DDR4 memory can be upgraded up to 1 TB for fulfilling memory-intensive applications. Demonstrating immense computing power and multi-tasking capabilities, the TDS-h2489FU is outstanding for uncompromising performance demands in HPC, virtualization, file servers, and multimedia applications.

U.2 NVMe PCIe Gen 4 x4 – faster speed, optimal I/O, and lower latency

The 2U rackmount TDS-h2489FU has 24 drive bays for U.2 NVMe PCIe Gen 4 x4 SSDs that supply up to 64 Gb/s bandwidth (compatible with PCIe Gen 3 SSDs) for the utmost application response times. Coupled with powerful ZFS data deduction and SSD optimization technologies, the TDS-h2489FU provides solid foundations for overcoming performance demands while also maximizing your SSD investments! Among the 24 drive bays, slots 17 to 24 support both high-performance U.2 NVMe PCIe Gen 4 x4 SSDs or economical SATA 6Gb/s SSDs.

Dual 25GbE connectivity optimizes data transfer and VMware virtualization with iSER

The TDS-h2489FU provides four 2.5GbE RJ45 ports and has a built-in QXG-25G2SF-CX6 dual-port 25GbE SFP28 SmartNIC with the NVIDIA® Mellanox ConnectX®-6 Lx SmartNIC controller that supports iSCSI Extensions for RDMA (iSER) to increase performance of data transfer between NAS and ESXi server and offload CPU workloads. With Port Trunking and Auto-Negotiation, the TDS-h2489FU empowers your organization with the bandwidth and reliability to allow thousands of endpoint users to smoothly access data stored on the NAS and also satisfy the most demanding applications (including data centers, virtualization, massive file transfer, high-speed backup/restoration, and multimedia transmission). The TDS-h2489FU is also ideally matched with QNAP’s managed and unmanaged 2.5GbE/10GbE switches to form high-speed, secure and scalable network environments without going over budget.

M.2 PCIe/SATA slots for SSD cache acceleration or enhanced AI image recognition

To attain optimal I/O and reduce latency, you can configure SSD caching by using either 2.5-inch SSDs or two M.2 2280 SSDs (NVMe PCIe Gen 3 or SATA 6 Gb/s, sold separately) in the TDS-h2489FU. You can implement durable data center SSDs (such as Intel® Optane™ SSDs) to enhance ZIL protection along with the QuTS hero Dedicated ZIL – SLOG. Extra M.2 SSD slots can also be added by installing QM2 PCIe cards. The M.2 PCIe slots also allow for installing a Coral M.2 Accelerator with Edge TPU, providing an affordable solution to leverage AI acceleration for faster image recognition in your NAS applications.


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The Case for buying an Integrated NAS System from SimplyNAS

Buying a NAS doesn't have to be complicated or stressful. This may only occur at times when looking to buy a diskless NAS as the risk element of receiving a faulty NAS or drives are accentuated. Nothing wrong in buying a diskless NAS and adding your own drives, the savings made may offset the inconvenience of receiving faulty NAS/Drives and having to go deal with returns, or does it? The argument against buying a diskless and self-populating with drives is quite compelling.

Disk Drives:

  • We ensure all drives are compatible with the relevant manufacturer, model provide conformity with the relevant compatibility guidelines.
  • All our disk drives are sourced from manufacturer recommended distributors – we don't buy aftermarket drives or purchase on open grey markets.
  • All our disk drives are sourced from manufacturer recommended distributors – we don't buy aftermarket drives or purchase on open grey markets.
  • Our comprehensive batch rotation ensures customer avoid batch issues and thus promote reliability and longevity.
  • Our methodology for configuration, setting RAID and in-depth burn testing process for disk drives and NAS servers is unsurpassed and the small premium paid for this service is worth its weight in gold.

NAS Servers:

  • We are authorized partners for all the NAS servers we stock.
  • We only sell and support NAS solutions, as a specialist our knowledge is unsurpassable.
  • Our expertise within the technical arena for NAS servers, provides the glue for preventing our customers from making an incorrect buying decision, as we share our knowledge.
  • Our extensive and professional burn-testing service ensure the optimization and deployment of both NAS and Disk Drives is done to provide peace of mind and total integration.
  • Ready to use out of the box, no if's or buts.

Thinking of buying a NAS?

QNAP, Synology, QSAN and TerraMaster – Over fourteen Comprehensive years relationship culminating in our expertise of understanding all the NAS products, and skillfully combining performance, reliability and features to ensure our NAS experts are always at hand to help our customers optimize their storage needs.

At SimplyNAS we balance performance, reliability and compatibility to ensure customers get optimized NAS based disk solutions that perfectly match their Storage needs. All our pre-configured NAS systems are evenly balanced in the areas that really matter.
Call our NAS experts today at 407-960-4690

What is NASBIT?

NASBIT© is a Licensed trademark of SimplyNAS. The acronym stands for Network Attached Storage Burn in Testing. This term is used to describe the process of testing new Network Attached Storage (NAS) hardware and firmware for faults before putting it to use in a live environment. This is done by running 'Stress testing' software for a stipulated period of time often 24 to 48 hours, but longer if needed.

When we receive an order for a NAS system pre-installed with disk drives it's prepared and configured with RAID followed by burn testing to ensure the entire system undergoes a thorough examination thus ensuring the server passes all tests to the highest standards set by us. Should the system hardware or any associated components fail at any point of the testing cycle the system is pulled and returned back as faulty our relevant vendor partner, the process seems simple but setting it up is far from easy.

Hard Disk Drives

All Hard disk drives are pre-tested prior to integration; the smallest of faults be it tolerable within industry standards are classified by us as faults, the hard drive is rejected and eliminated from the process and again returned back to source as a D.O.A. (dead on arrival). We continue to select drives from different batches, so as to eliminate any bad batches that may have been produced during manufacturing.

One integrated the drives are put through a vigorous routine that includes stress testing, including temperature tests and a host of read, writes to ensure the drive platters are stressed to the nth degree.


First, when the new server is turned on, we boot off of the network, and proceed to run the memory test that takes its sweet time, almost 10-12 hours dependent on manufacturer and model.


The appropriate RAID level is set and the system awaits completion of RAID synchronization. Once completed the NAS server undergoes numerous re-boots and a deletion of original RAID and a final re-build of RAID level again.

Why is NAS Burn in Testing (NASBIT©) necessary?

If within the designated time span the NAS servers are still running and with zero faults, it is considered suitable for rolling out to our customers. If there is a failure of any kind the systems is replaced with a new one, including hard drives and the process starts again, until the NAS servers passes with ZERO faults.

You would normally expect that this level of testing would be completed by the hardware manufacturers and so these tests shouldn't show up any faults. In our experience of testing hundreds of machines we do find faults, and we do send systems back.

The reason it is so important to perform this level of testing on NAS servers is that the uptime demands are so high. The slightest faults will cause outages and downtime. Once a NAS server is deployed, never again will you have the opportunity to take it offline and perform such detailed testing. Even if it were to crash, there is always a demand that it be put back online as quickly as possible, not left offline whilst thorough diagnostics are completed.

Always remember this is hardware and failures can and will occur even after burn testing has been carried, that is a fact of life we cannot avoid, but we do try and eliminate some of the hassle factor with testing. Thank you for buying from us, we truly appreciate your custom.

Copyright 2020 by SimplyNAS all rights reserved. Federal copyright law prohibits unauthorized reproduction by any means and imposes fines up to $25,000 for violation.

We try our best to get orders shipped as quickly as possible. However, due to the current situation with the Coronavirus, some manufacturers are experiencing stock constraints, shipping delays due to warehouse closures, delays in customs or other unforseen circumstances which can sometimes delay an order as stock levels can change hourly. We understand that your order may be urgent, so if you want to check if something is in stock before you place your order, please call us at 407-960-4690 during our normal business hours of 9-6PM EST. We also try to be transparent on the site with availability and shipping times. We do sometimes make mistakes and greatly appreciate your understanding if this occurs. Please allow some grace and patience as we work through the difficulties and challenges of communicating with our suppliers to keep up with supply changes.

So when can I expect a shipping notification for my order?

  • Diskless orders that are in stock will ship same day if placed before 2pm.
  • Diskless units that are not in stock we will ship directly from our suppliers warehouses. This could delay shipping by 1 - 3 business days.
  • Configured systems are considered special order. This means that they are not already pre-built and ready to ship when you place an order. When you purchase a configured system from us it will not ship out for at least 2 - 3 business days due to the time it takes to pick, assemble, test, RAID and prepare your order for shipment. If we do not have one of the components on the build, that will further delay shipment as we have to wait for stock to come to us. You will receive updates for the order as it goes into testing.

When will my card be charged for an order?

We do not immediately charge your credit card when you submit an order, instead a temporary hold is placed on your card for the amount of the purchase. If everything is in stock, we will charge your card and process you order for building or shipment. Should there be a delay of some sort, we will notify you by email with the ETA and ask for approval to charge your card and process your order. Please be advised that we cannot allocate stock to you without prepayment. So, if you approve the ETA, we will immediately charge your card so that we can secure the stock from our suppliers. Once this charge occurs, any cancellation will incur a 3% fee.

Security and Payment Verification Requests

We take customer security very seriously as fraud and chargebacks are costly. In order to protect you and keep our costs to a minimum, we may ask you to verify your identity when you place an order. If your billing and shipping differ, or if the billing and shipping parties differ and we can't veryify you as a legitimate business, we will send a request by email with a link, asking you to upload documentation for us. We understand that this may make some people nervous, but you are sending your files to the same secured server as your payment and no one can access the files except for the staff who verify them. Your files are purged from the server within 120 days of payment date. As we cannot physically verify your identity when you place an order, this is the only way for us to accomplish this so we ask that you complete the verification as we won't be able to process your order until this step is completed.

We know you have many choices of where to buy from and we truly appreciate you choosing SimplyNAS as your storage supplier.