Description
The QNAP TS-855EU-RP NAS is a 2U rackmount unit in black, designed for network storage with up to eight drives. It supports HDD and SSD drives in 2.5 and 3.5 inch sizes, as well as M.2 modules, with Serial ATA II and Serial ATA III interfaces and two M.2 type M and B slots. Its Intel Atom C5125 processor runs at 2.8 GHz with 9 MB cache, accompanied by 8 GB of DDR4 memory. It offers RAID support and levels 0, 1, 5, 6, 10, 50 and 60, and includes hot-swap bays for the drives. It allows online RAID expansion, migration and rebuilding, so you can adjust the configuration without stopping the service. It is supplied without drives installed, with a total storage capacity of 0 TB, ready for you to add the drives you need. Its dimensions are 432 x 88.6 x 297.4 mm (width x height x depth) and it weighs 8.15 kg.
Specifications
Storage
- 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
Processor
- 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
Memory
- 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
Network
- 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
Ports & interfaces
- 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
Design
- Chassis type: Rack (2U)
- Cooling type: Active
- Product colour: Black
- Number of fans: 3 fan(s)
- Fan diameter: 6 cm
- LED indicators: Yes
Performance
- 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
Software
- 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
Power
- 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
Weight & dimensions
- Width: 432 mm
- Depth: 297.4 mm
- Height: 88.6 mm
- Weight: 8.15 kg
Operational conditions
- Operating temperature (T-T): 0 - 40 °C
- Operating relative humidity (H-H): 5 - 95%
- Storage temperature (T-T): -20 - 70 °C
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