QNAP TS-855EU-RP. Type: NAS. Chassis type: Rack (2U). Device class: Small & Medium Business. Processor family: Intel Atom®, Processor model: C5125, Processor frequency: 2.8 GHz. Internal memory: 8 GB, Internal memory type: DDR4. Total installed storage capacity: 0 TB. Operating system installed: QuTS hero
Products specifications
| Width | 432 mm |
| Depth | 297.4 mm |
| Height | 88.6 mm |
| Weight | 8.15 kg |
| Operating temperature (T-T) | 0 - 40 °C |
| Operating relative humidity (H-H) | 5 - 95% |
| Storage temperature (T-T) | -20 - 70 °C |
| Power supply location | Built-in |
| Power supply unit (PSU) capacity | 300 W |
| Number of power supply units | 2 |
| Power consumption (typical) | 78.73 W |
| Power consumption (sleep) | 54.331 W |
| AC input voltage | 100 - 240 V |
| Fan voltage | 12 V |
| USB port | Yes |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| Ethernet LAN (RJ-45) ports | 2 |
| PCI Express x4 (Gen 3.x) slots | 2 |
| Ethernet LAN | Yes |
| Ethernet LAN data rates | 10,100,1000,2500 Mbit/s |
| DHCP server | Yes |
| Jumbo frames support | Yes |
| iSCSI support | Yes |
| Wake-on-LAN ready | Yes |
| Chassis type | Rack (2U) |
| Cooling type | Active |
| Product colour | Black |
| Number of fans | 3 fan(s) |
| Fan diameter | 6 cm |
| LED indicators | Yes |
| Type | NAS |
| Device class | Small & Medium Business |
| Backup function | Yes |
| Buzzer | Yes |
| Multilingual support | Yes |
| Snapshot | Yes |
| Web-based management | Yes |
| Share folder access right management | Yes |
| Security algorithms | AES |
| Reset button | Yes |
| On/off switch | Yes |
| Processor manufacturer | Intel |
| Processor family | Intel Atom® |
| Processor model | C5125 |
| Processor frequency | 2.8 GHz |
| Processor cores | 8 |
| Processor threads | 8 |
| Processor cache | 9 MB |
| Internal memory | 8 GB |
| Internal memory type | DDR4 |
| Maximum RAM supported | 64 GB |
| Memory slots | 2 |
| Memory form factor | SO-DIMM |
| Flash memory | 5000 MB |
| Supported storage drive interfaces | Serial ATA II, Serial ATA III |
| Storage drive sizes supported | 2.5,3.5,M.2 |
| Number of M.2 (M & B) slots | 2 |
| RAID support | Yes |
| RAID levels | 0, 1, 5, 6, 10, 50, 60 |
| Online RAID migration | Yes |
| Online RAID expansion | Yes |
| RAID rebuild | Yes |
| Hot-swap drive bays | Yes |
| Storage drives installed | No |
| Total installed storage capacity | 0 TB |
| Number of storage drives supported | 8 |
| Installed storage drive type | No |
| Supported storage drive types | HDD & SSD |
| Operating system installed | QuTS hero |
| Operating system version | h5.0.1 |
| Windows operating systems supported | Windows 10, Windows 7, Windows 8 |
| Linux operating systems supported | CentOS 7.0, Ubuntu 14.04, Yes |
| Mac operating systems supported | Mac OS X 10.10 Yosemite, Yes |
