Description
QNAP TS-855EU-8G NAS/storage server in 2U rack format, ready to accommodate up to eight 2.5 or 3.5-inch drives, although it arrives without disks installed and with a total capacity of 0 TB so you can configure storage to your needs. It integrates an Intel Atom C5125 processor and 8 GB of DDR4 memory, with two additional M.2 slots for SSDs and support for RAID levels 0, 1, 5, 10, 50, 60, and JBOD, plus online RAID migration and expansion. It includes hot-swap bays, disk roaming, and RAID rebuilding, all managed under QuTS hero, an operating system that makes the most of HDDs and SSDs in flexible and reliable configurations for your network.
Specifications
Storage
- Storage drive capacity: 0 GB
- Supported storage drive interfaces: Serial ATA III, Serial ATA II
- Storage drive sizes supported: 2.5, 3.5"
- Number of M.2 (M & B) slots: 2
- RAID support: Yes
- RAID levels: 0, 1, 5, 10, 50, 60, JBOD
- Online RAID migration: Yes
- Online RAID expansion: Yes
- RAID rebuild: Yes
- Hot-swap drive bays: Yes
- Supported file systems: FAT32, HFS+, NTFS, ZFS, exFAT, ext3, ext4
- 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
- Disk roaming: Yes
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
- Number of processors installed: 1
- ECC supported by processor: Yes
- Thermal Design Power (TDP): 50 W
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
- Supported network protocols: IPv4, IPv6
- Dynamic DNS (DDNS): Yes
Ports & interfaces
- USB port: Yes
- USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: 4
- Fiber optic connector: MTP
- Ethernet LAN (RJ-45) ports: 2
- PCI Express x4 (Gen 3.x) slots: 2
Design
- LED indicators: Yes
- Chassis type: Rack (2U)
- Cooling type: Active
- Product colour: Black
- Number of fans: 3 fan(s)
- Fan diameter: 6 cm
Performance
- Type: NAS
- Device class: Small & Medium Business
- Backup function: Yes
- Backup features: USB drive, iSCSI LUN
- Buzzer: Yes
- Snapshot: Yes
- Management protocols: SNMP V2, V3
- Security algorithms: AES, FIPS 140, HTTPS, SSH
- Access Control List (ACL): Yes
- Reset button: Yes
- On/off switch: Yes
- Built-in FTP server: Yes
- Browser supported: Apple Safari (latest version) Google Chrome (latest version) Microsoft Edge (latest version) Mozilla Firefox (latest version)
- System log: Yes
- Hot spare: Yes
- S.M.A.R.T. support: Yes
- Share folder: CIFS/SMB
- USB copy function: Yes
Software
- Operating system installed: QuTS hero
- Operating system version: h5.0.1
- Windows operating systems supported: Windows 10, Windows 11, 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
- Server operating systems supported: Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019
- Other operating systems supported: IBM AIX 7.1, Solaris 10
Power
- Power supply location: Built-in
- Power supply unit (PSU) capacity: 250 W
- Number of power supply units: 1
- Power consumption (typical): 79.113 W
- Power consumption (sleep): 49.799 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: 7.61 kg
- Package width: 530 mm
- Package depth: 210 mm
- Package height: 592 mm
- Package weight: 10.9 kg
Packaging content
- Cables included: AC, LAN (RJ-45)
- Power cables quantity: 1
- Quick installation guide: Yes
- Number of screws: 56
- Package type: Box
Operational conditions
- Operating temperature (T-T): 0 - 40 °C
- Operating relative humidity (H-H): 5 - 95%
- Storage temperature (T-T): -20 - 70 °C
Other features
- Fibre Channel: Yes
- Warranty period: 3 year(s)
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