QNAP TS-855X-8G
High-performance 8-core 10GbE NAS for deploying hybrid-infrastructure storage and high-speed virtualization applications
The high-capacity TS-855X has six 3.5-inch SATA drive bays (for HDDs), two 2.5-inch SATA drive bays (for SSDs) and an 8-core processor supporting Intel® QuickAssist Technology (QAT), greatly assisting businesses in deploying a data storage and virtualization environment. The built-in 10GbE/2.5GbE high-speed connectivity helps realize fast data access, backup/restoration, file server, and virtualization applications. Running the QTS operating system as standard, the TS-855X can be switched to use the ZFS-based QuTS hero operating system based on your requirements. The TS-855X will be available and supported by QNAP for an extended period (up to 2030), ideal for businesses requiring matching NAS models deployed in long-term projects.
2.5GbE/10GbE connectivity
Dual-port 2.5GbE and single-port 10GbE connectivity. The dual 2.5GbE ports also support SMB Multichannel for up to 5 Gbps!
Flexible storage expansion
Connect TL-R1620Sep-RP / TL-R1220Sep-RP JBOD units to the TS-855X for adding up to 48 additional drive capacity to match your business growth.
Flexible PCIe Gen3 expansion
Features two PCIe Gen 3 slots for installing 5/10/25GbE network cards, QM2 cards or Fibre Channel cards.
M.2 SSD caching
Dual M.2 PCIe NVMe slots enable SSD caching, SSD storage pools, or Qtier™ auto-tiered storage.
Virtual machines and containers
Host virtual machines and containerized apps on one device to optimize resource utilization and IT budgeting. Supports SR-IOV.
All-inclusive data backup and restoration
A reliable backup center for your PC/Macs, virtual machines, containers, cloud data, and SaaS data.
Ultimate 8-core performance with up to 128 GB RAM and Intel® QuickAssist Technology
The TS-855X delivers exceptional 8-core performance for running multiple concurrent tasks. AES-NI encryption and Intel® QuickAssist Technology (QAT) are supported to offload resource-demanding compression and improving IPsec/SSL cryptography performance. The TS-855X comes with four UDIMM DDR4 slots (8 GB preinstalled) that can be upgraded to 128 GB ECC RAM for higher workloads. Combining high performance, reliability, and capacity, the TS-855X is an all-round budget-friendly storage solution for diverse applications, such as file servers, high-speed storage/backup/recovery, and virtualization.
CPU
Intel® Atom® C5125 8-core 2.8 GHz processor
Memory
8 GB DDR4 Non-ECC memory (up to 128 GB, 4x 32 GB)
Note: Also supports installing ECC RAM, but Non-ECC RAM and ECC RAM CANNOT be mixed.
Transmission efficiency
Tested in QNAP Labs. Figures may vary by environment.
Test Environment:
NAS : with QXG-25G2SF-CX6
OS : QTS 5.0.1
Volume type : 8 x Samsung 860 EVO 1 TB SATA , RAID 5, thick volume
Client PC : Windows Server 2016 Standard, Intel i7-6700 3.4GHz, 64GB RAM
IOmeter : 16MB, 30-sec ramp up time, 3-min seq. run time, 16 workers, 4-outstanding
Virtualization Certifications Supported by TS-855X
Build a High-Speed 10GbE/2.5GbE Network Environment
Featuring two native 2.5GbE RJ45 (2.5G/1G/100M) LAN ports and a 10GBASE-T (2.5G/1G/100M) port, the TS-855X satisfies bandwidth and reliability demanding business applications including virtualization, large file transfers, high-speed backup/restoration, and real-time applications. Combine the dual 2.5GbE ports with SMB 3.0 Multichannel for up to 5 Gbps fault-tolerant connections! QNAP also offers numerous managed/unmanaged 2.5GbE/10GbE switches, assisting organizations in implementing high-speed, secure, and scalable network environments without going over budget.
Learn More: SMB 3.0 Multichannel, QNAP 10GbE network solution, QNAP 2.5GbE network solution, QNAP switches
M.2 PCIe slots for SSD caching and accelerated AI-powered image recognition
The TS-855X comes with two M.2 PCIe Gen 3 slots that allow for installing M.2 2280 NVMe SSDs (including SSD brands of Micron®, Seagate® and WD®) or Edge TPU (sold separately) to boost NAS performance.
Direct 2.5GbE connectivity for up to ten PC/workstations
Your team needs a high-speed environment and productivity boost, and the TS-855X delivers with two 2.5GbE ports. By installing two 4-port PCIe network cards (QXG-2G4T-I225) the TS-855X can directly connect to up to ten PC/workstations - no switch required – for faster large file transfer/backup, video editing, and much more.
Extend hardware warranty up to 5 years
The TS-855X is backed by a 3-year warranty at no additional cost. You can also purchase a warranty extension that extends your warranty coverage up to 5 years.
Hardware Specification
TS-855X-8G
| CPU |
Intel ® Atom® C5125 8-core processor, 2.8GHz |
| CPU Architecture |
64-bit x86 |
| Floating Point Unit |
 |
| Encryption Engine |
(AES-NI) |
| System Memory |
8 GB non-ECC UDIMM DDR4 (1 x 8 GB) |
| Maximum Memory |
128 GB (4 x 32 GB) |
| Memory Slot |
4 x U-DIMM DDR4
Support ECC memory |
| Flash Memory |
5GB (Dual boot OS protection) |
| Drive Bay |
6 x 3.5-inch + 2 x 2.5-inch SATA 6Gb/s, 3Gb/s |
| Drive Compatibility |
3.5-inch bays:
3.5-inch SATA hard disk drives
2.5-inch SATA solid state drives
2.5-inch bays:
2.5-inch SATA solid state drives |
| Hot-swappable |
The following are not hot-swappable: M.2 SSDs, SSD cache drives, SSDs using PCIe expansion slots.
The following are not hot-swappable: M.2 SSDs, SSD cache drives, SSDs using PCIe expansion slots.
|
| M.2 Slot |
2 x M.2 2280 PCIe Gen 3 x4 slots
Compatible with NVMe SSD PCIe Gen 3 and above. Please refer to https://www.qnap.com/compatibility/ for compatibility. The M.2 SSD is not included as standard. M.2 SSD operations can easily generate excessive heat. It is recommended to install a heatsink (from QNAP or a third-party provider) on the M.2 SSD. The M.2 SSD is not included as standard. M.2 SSD operations can easily generate excessive heat. It is recommended to install a heatsink (from QNAP or a third-party provider) on the M.2 SSD. |
| SSD Cache Acceleration Support |
|
| SR-IOV |
|
| 2.5 Gigabit Ethernet Port (2.5G/1G/100M) |
2 (2.5G/1G/100M/10M) |
| 10 Gigabit Ethernet Port |
1 x 10GBASE-T |
| 25 Gigabit Ethernet Port |
Optional via PCIe expansion card |
| Wake on LAN (WOL) |
Only the 2.5GbE port
Only the 2.5GbE port
|
| Jumbo Frame |
|
| PCIe Slot |
2
Slot 1: PCIe Gen 3 x4
Slot 2: PCIe Gen 3 x4
Card dimensions for PCIe slot 1：260 x 111.15 x 18.76 mm / 10.25 x 4.38 x 0.74 inches
Card dimensions for PCIe slot 2：150 x 68.9 x 18.76 mm / 5.90 x 2.71 x 0.74 inches.
Card dimensions for PCIe slot 1：260 x 111.15 x 18.76 mm / 10.25 x 4.38 x 0.74 inches
Card dimensions for PCIe slot 2：150 x 68.9 x 18.76 mm / 5.90 x 2.71 x 0.74 inches.
|
| USB 2.0 port |
1 |
| USB 3.2 Gen 1 port |
3 |
| Form Factor |
Tower |
| LED Indicators |
Power/Status, LAN, USB, HDD1-6, SSD 1-2, M.2 SSD 1-2 |
| Buttons |
Power, Reset, USB Auto Copy |
| Dimensions (HxWxD) |
225 × 292.9 × 319.8 mm
Dimensions do not include foot pad (foot pad may be up to 30mm / 1.18 inches high depending on model)
Dimensions do not include foot pad (foot pad may be up to 30mm / 1.18 inches high depending on model)
|
| Weight (Net) |
10.04 kg |
| Weight (Gross) |
10.04 kg |
| Operating Temperature |
0 - 40°C (32°F - 104°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 |
250W PSU, 100~240V |
| Power Consumption: Operating Mode, Typical |
86.96 W
Tested with drives fully populated.
Tested with drives fully populated.
|
| Fan |
System fan: 2 x 80mm, 12VDC
CPU fan: 1 x 90mm, 12VDC |
| Other Interfaces |
Kensington security slot |
| System Warning |
Buzzer |
| Kensington Security Slot |
|
| Standard Warranty |
3 |
| Max. Number of Concurrent Connections (CIFS) - with Max. Memory |
2500 |
Note: Use only QNAP memory modules to maintain system performance and stability. For NAS devices with more than one memory slot, use QNAP modules with identical specifications.
Warning: Using unsupported modules may degrade performance, cause errors, or prevent the operating system from starting.
QNAP reserves the right to replace partial parts or accessories if the original is no longer available from its manufacturer/supplier. Any replacement would be fully tested and verified to meet strict compatibility and stability guidelines and will deliver identical performance to the original.
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Designs and specifications are subject to change without notice.
