6x HDD + 2x SSD hybrid storage
2x M.2 NVMe slots, 2x 2.5GbE, 1x 10GbE, 2x PCIe slots
Long-term availability (Up to year 2030)
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.
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2.5GbE/10GbE connectivity
Dual-port 2.5GbE and single-port 10GbE connectivity. The dual 2.5GbE ports also support for up to 5 Gbps!
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Flexible storage expansion
Connect JBOD units to the TS-855X for adding up to 48 additional drive capacity to match your business growth.
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Flexible PCIe Gen3 expansion
Features two PCIe Gen 3 slots for installing 5/10/25GbE network cards, QM2 cards or Fibre Channel cards.
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Optimized SSD performance
Dual M.2 PCIe NVMe slots enable SSD caching or SSD storage pool for the system drive of QuTS hero.
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Virtual machines and containers
Host virtual machines and containerized apps on one device to optimize resource utilization and IT budgeting. Supports SR-IOV.
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All-inclusive data backup and restoration
A reliable backup center for your PC/Macs, virtual machines, containers, cloud data, and SaaS data.
Specification
| 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.
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| M.2 Slot | 2 x M.2 2280 PCIe Gen 3 x4 slots
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 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
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| 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. |
| 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)
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| 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.
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| 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 |
