Short-depth rackmount chassis
The 297.4mm depth supports compact 2U rack deployment with room for cabling.
New
QNAP NAS TS-855EU-RP-8G 8-Bay Intel Atom, 8GB short-depth rackmount NAS with Redundant Power Supply
Model # TS-855EU-RP-8G
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SKU: TS-855EU-RP-8G
$4,564.00
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8-core short-depth 2U NAS with redundant power
QNAP TS-855eU-RP-8G 8-Bay Short-Depth NAS with Redundant PSU
A diskless eight-bay short-depth 2U NAS with an Intel Atom C5125 eight-core processor, 8GB DDR4 memory, dual 2.5GbE, dual M.2, dual PCIe and two 300W power supplies.
Diskless 8-bay NASIntel Atom 8-coreDual 300W PSU3-year manufacturer warranty
What is the QNAP TS-855eU-RP-8G?
The TS-855eU-RP-8G is a compact eight-bay rackmount NAS for file serving, backup, virtualisation and container workloads. It combines short-depth hardware with expandable memory, M.2 and PCIe expansion, plus redundant power supplies.
8 CoresIntel Atom C5125 at 2.8GHz
8 BaysDiskless hot-swappable SATA storage
297.4mmShort-depth 2U chassis
2 × 300WRedundant power supplies
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Eight-core processing and expandable memory
The Intel Atom C5125 processor provides eight cores at 2.8GHz. The NAS includes 8GB non-ECC SODIMM DDR4 memory and supports up to 64GB using two 32GB modules.
ECC memory is supported. For dual-DIMM configurations, use a pair of identical modules.
- AES-NI encryption is listed in the specification.
- Intel QuickAssist Technology is described for compression and IPsec/SSL cryptography workloads.
- The listed maximum concurrent CIFS connection figure is 2,000 with maximum memory.
Dual 2.5GbE, M.2 NVMe and PCIe expansion
Two 2.5GbE RJ45 ports support 2.5G, 1G, 100M and 10M speeds, with Port Trunking and network fault tolerance described in the product information.
Two M.2 2280 PCIe Gen 3 x4 slots support compatible NVMe SSDs, while two PCIe Gen 3 x4 slots can add faster networking, QM2 or Fibre Channel connectivity.
- Optional 5GbE, 10GbE or 25GbE adapters are supported.
- Wake on LAN is supported through the 2.5GbE ports.
- M.2 SSD hot swapping is not supported.
Virtualisation and scalable storage
The product information lists centralised virtualisation storage, virtual machines, containerised applications and SR-IOV support.
Compatible TL-R1620Sep-RP and TL-R1220Sep-RP JBOD units can add capacity for up to 48 additional drives.
- QTS is installed as standard and can be switched to QuTS hero.
- The lifecycle statement describes planned availability and support through 2030.
- The chassis depth is 297.4mm for compact rack deployment.
Redundant power for system availability
Two 300W redundant power supply units with 100-240V input are included.
The redundant design helps maintain system operation if one power supply becomes unavailable.
- Three 60mm system fans are listed.
- The listed disk-standby consumption is 54.331W.
- The listed typical operating consumption is 78.73W with drives fully populated.
Important purchasing and deployment notes
- The NAS is supplied without storage drives; compatible hard drives or solid state drives must be purchased separately.
- M.2 SSD hot swapping is not supported, and optional faster networking requires compatible PCIe hardware.
- Use a pair of identical DDR4 modules for dual-DIMM memory configurations.
- Review storage and operating-system requirements before switching between QTS and QuTS hero.
Frequently asked questions
What is the QNAP TS-855eU-RP-8G?
It is a diskless eight-bay short-depth 2U NAS with an Intel Atom C5125 eight-core processor, dual 2.5GbE, dual M.2, dual PCIe and redundant power.
Does the TS-855eU-RP-8G include storage drives?
No. The product information states that compatible drives must be purchased separately.
Which processor is installed?
It uses an Intel Atom C5125 eight-core processor running at 2.8GHz.
How much memory is installed and supported?
It includes 8GB non-ECC DDR4 memory and supports up to 64GB using two 32GB modules.
Does it support ECC memory?
Yes. ECC memory is supported, and a pair of identical DDR4 modules is required for dual-DIMM configurations.
Which network ports are included?
It includes two 2.5GbE RJ45 ports supporting 2.5G, 1G, 100M and 10M speeds.
Can faster networking be added?
Yes. Compatible 5GbE, 10GbE and 25GbE adapters can be installed through the PCIe slots.
Does it include M.2 NVMe slots?
Yes. It includes two M.2 2280 PCIe Gen 3 x4 slots, but M.2 SSD hot swapping is not supported.
Can storage capacity be expanded?
Yes. Compatible TL-R1620Sep-RP and TL-R1220Sep-RP JBOD units can add up to 48 drives.
Can it run QuTS hero?
Yes. It runs QTS as standard and can be switched to the ZFS-based QuTS hero operating system.
Does it include redundant power supplies?
Yes. It includes two 300W redundant power supply units with 100-240V input.
What warranty applies to the TS-855eU-RP-8G?
This product is covered by a three-year QNAP manufacturer warranty.
(TS-855EU-RP-8G)
Features and highlights
Key capabilities below are organised from the supplied product information for TS-855eU-RP-8G.
Intel Atom eight-core processing
The C5125 processor runs at 2.8GHz and supports AES-NI and Intel QAT capabilities.
Expandable ECC-capable memory
The installed 8GB non-ECC memory can be expanded to 64GB, with ECC memory supported.
Dual 2.5GbE networking
Two multi-gigabit ports support Port Trunking, fault tolerance and Wake on LAN.
Dual M.2 and dual PCIe
Built-in NVMe slots and PCIe Gen 3 x4 slots support storage and network expansion.
Redundant 300W power
Two power supply units help maintain operation if one unit becomes unavailable.
Important: This is a diskless system. M.2 hot swapping is not supported, higher-speed networking requires compatible PCIe hardware, and identical memory modules are required for dual-DIMM configurations.
TS-855eU-RP-8G specifications
Specifications below are organised from the supplied QNAP product information for TS-855eU-RP-8G.
Processor and Memory
| CPU | Intel Atom C5125 8-core processor, 2.8GHz |
|---|---|
| CPU Architecture | 64-bit x86 |
| Floating Point Unit | Yes |
| Encryption Engine | Yes, AES-NI |
| Intel QuickAssist Technology | Supported |
| System Memory | 8GB non-ECC SODIMM DDR4 (1 x 8GB) |
| Maximum Memory | 64GB (2 x 32GB) |
| Memory Slots | 2 x SODIMM DDR4 ECC memory supported For a dual-DIMM configuration, use a pair of identical DDR4 modules. |
| Flash Memory | 5GB with dual-boot OS protection |
Storage
| Drive Bays | 8 x 3.5-inch SATA 6Gb/s, 3Gb/s The system is supplied without hard disk drives. |
|---|---|
| Drive Compatibility | 3.5-inch SATA hard disk drives 2.5-inch SATA hard disk drives 2.5-inch SATA solid state drives |
| Hot-Swappable | Yes M.2 SSD hot swapping is not supported. |
| M.2 Slots | 2 x M.2 2280 PCIe Gen 3 x4 slots Compatible with NVMe SSDs using PCIe Gen 3 and above. |
| SSD Cache Acceleration Support | Yes |
| SR-IOV | Yes |
Networking
| 2.5 Gigabit Ethernet | 2 x 2.5GbE RJ45 ports (2.5G/1G/100M/10M) |
|---|---|
| 5 Gigabit Ethernet | Optional via a network adapter |
| 10 Gigabit Ethernet | Optional via a network adapter |
| 25 Gigabit Ethernet | Optional via a network adapter |
| Wake on LAN | Yes Supported through the 2.5GbE ports only. |
| Jumbo Frame | Yes |
Expansion and Connectivity
| PCIe Slots | 2 x PCIe Gen 3 x4 Slot 1: PCIe Gen 3 x4 Slot 2: PCIe Gen 3 x4 Slot 1 card dimensions: 97 x 68.9 x 18.76mm / 3.82 x 2.71 x 0.74 inches. Slot 2 card dimensions: 210 x 68.9 x 18.76mm / 8.27 x 2.71 x 0.74 inches. |
|---|---|
| USB 3.2 Gen 1 Ports | 4 |
| HDMI Output | Optional via a PCIe graphics card |
Physical Specifications
| Form Factor | 2U short-depth rackmount |
|---|---|
| LED Indicators | HDD 18, status, LAN, USB and power |
| Buttons | Power and reset |
| Dimensions (H x W x D) | 88.6 x 432 x 297.4mm |
| Net Weight | 8.15kg |
| Gross Weight | 10.94kg |
Power and Cooling
| Power Supply Unit | 2 x 300W redundant power supply units, 100240V AC |
|---|---|
| Power Consumption: Disk Standby | 54.331W |
| Power Consumption: Typical Operating Mode | 78.73W Tested fully populated with WD10EFRX hard drives. |
| Fans | 3 x 60mm, 12VDC |
| System Warning | Buzzer |
Operating Environment
| Operating Temperature | 040°C (32104°F) |
|---|---|
| Storage Temperature | -2070°C (-4158°F) |
| Relative Humidity | 595% RH non-condensing, wet bulb: 27°C (80.6°F) |
Operating System, Warranty and Connections
| Operating System | QTS as standard Can be switched to QuTS hero |
|---|---|
| Standard Warranty | 3 years |
| Maximum Concurrent CIFS Connections | 2,000 with maximum memory installed |
Storage Expansion and Deployment
| Storage Expansion | TL-R1620Sep-RP and TL-R1220Sep-RP JBOD units are listed, adding up to 48 additional drives. |
|---|---|
| Virtualisation | Virtual machines, containerised applications and SR-IOV are supported. |
| Planned Availability | QNAP states planned availability and support through 2030. |
Important Notes
| Drive status | The system is supplied without storage drives. |
|---|---|
| M.2 SSD status | M.2 SSD hot swapping is not supported. |
| Memory installation | Use a pair of identical DDR4 modules for dual-DIMM configurations. |
| SKU | TS-855EU-RP-8G |
| Model # | TS-855EU-RP |
| Barcode # | 4711103083307 |
| Brand | QNAP |
| Shipping Weight | 11.0000kg |
| Shipping Width | 0.600m |
| Shipping Height | 0.210m |
| Shipping Length | 0.530m |
| Shipping Cubic | 0.066780000m3 |
3 YearsQNAP manufacturer warranty
3-year QNAP manufacturer warranty
The supplied specifications list a 3-year standard manufacturer warranty for the QNAP TS-855eU-RP-8G.
Warranty coverage, eligibility and claim assessment are subject to QNAPs applicable warranty terms. Please retain your DeviceDeal tax invoice as proof of purchase.
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