QNAP TS-855X-8G, 8-Bay NAS, Intel Atom C5125 8-core processor, 2.8GHz, 8 GB SODIMM DDR4 (1x 8 GB), 1 x 10Gbe/2 x2.5Gbe, PCIe, 2 Yrs WTY
CPU: Intel Atom C5125 8-core processor, 2.8GHz
CPU Architecture: 64-bit x86
Floating Point Unit: Y
Encryption Engine: (AES-NI)
System Memory: 8 GB UDIMM DDR4 (1 x 8 GB)
Maximum Memory:128 GB (4 x 32 GB)
Memory Slot: 4 x U-DIMM DDR4
Support ECC memory:Y
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.
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 (from QNAP or a third-party provider) on the M.2 SSD.
SSD Cache Acceleration Support:Y
SR-IOV:Y
2.5 Gigabit Ethernet Port (2.5G/1G/100M):2 (2.5G/1G/100M/10M)
10 Gigabit Ethernet Port: 1x 10GBASE-T
25 Gigabit Ethernet Port: Optional via PCIe expansion card
Wake on LAN (WOL):Y (Only the 2.5GbE port
Jumbo Frame: Y
PCIe Slot 2
Slot 1: PCIe Gen 3 x4
Slot 2: PCIe Gen 3 x4
Card dimensions for PCIe slot 1:150 x 68.9 x 18.76 mm / 5.90 x 2.71 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,
| 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. | 
| 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. | 
| 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 | 
| 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) | 
| 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. | 
| 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 | 

 
                                             
                                             
                                             
                                            

