Qnap TS-855eU-8G, 2U, 8 x 2.5"/3.5" SATA, Intel Atom C5125 8C/8T, 8 GB SODIMM DDR4 (max. 64GB ), 2 x 2.5GbE, Single PSU

Processor cache: 9 MB
Processor family: Intel Atom®
Processor frequency: 2.8 GHz
Processor threads: 8
ECC supported by processor: Yes
Processor manufacturer: Intel
Thermal Design Power (TDP): 50 W
Processor cores: 8
Processor model: C5125
Number of processors installed: 1
Flash memory: 5000 MB
Internal memory: 8 GB
Maximum RAM supported: 64 GB
Memory form factor: SO-DIMM
Memory slots: 2
Internal memory type: DDR4
Cooling type: Active
Product colour: Black
Chassis type: Rack (2U)
LED indicators: Yes
Number of fans: 3 fan(s)
Fan diameter: 6 cm
Power consumption (sleep): 49.799 W
Number of power supply units: 1
Power supply unit (PSU) capacity: 250 W
Fan voltage: 12 V
AC input voltage: 100 - 240 V
Power consumption (typical): 79.113 W
Power supply location: Built-in
Operating relative humidity (H-H): 5 - 95%
Storage temperature (T-T): -20 - 70 °C
Operating temperature (T-T): 0 - 40 °C
Depth: 297.4 mm
Width: 432 mm
Height: 88.6 mm
Weight: 7.61 kg
Wake-on-LAN ready: Yes
iSCSI support: Yes
Ethernet LAN: Yes
Ethernet LAN data rates: 2500 Mbit/s, 1000, 100, 10
Dynamic DNS (DDNS): Yes
Supported network protocols: IPv4, IPv6
DHCP server: Yes
Jumbo frames support: Yes
Security algorithms: FIPS 140, AES, HTTPS, SSH
Snapshot: Yes
USB copy function: Yes
Management protocols: SNMP V2, V3
Backup function: Yes
Reset button: Yes
Hot spare: Yes
Browser supported: Apple Safari (latest version) Google Chrome (latest version) Microsoft Edge (latest version) Mozilla Firefox (latest version)
Type: SAN
Backup features: USB drive, iSCSI LUN
Access Control List (ACL): Yes
System log: Yes
Device class: Home & Home Office
On/off switch: Yes
Built-in FTP server: Yes
Buzzer: Yes
Share folder: CIFS/SMB
S.M.A.R.T. support: Yes
Power cables quantity: 1
Quick installation guide: Yes
Cables included: AC, LAN (RJ-45)
Number of screws: 56
Server operating systems supported: Windows Server 2019, Windows Server 2012, Windows Server 2008 R2, Windows Server 2012 R2, Windows Server 2016
Other operating systems supported: Solaris 10, IBM AIX 7.1
Windows operating systems supported: Windows 8, Windows 7, Windows 10, Windows 11
Mac operating systems supported: Mac OS X 10.10 Yosemite, Yes
Linux operating systems supported: Yes, Ubuntu 14.04, CentOS 7.0
Operating system installed: QuTS hero
Operating system version: h5.0.1
RAID support: Yes
Online RAID expansion: Yes
Storage drive sizes supported: 2.5, 3.5
RAID levels: 5, 1, 60, JBOD, 0, 50, 10
Number of storage drives supported: 8
Supported file systems: exFAT, FAT32, HFS+, ZFS, ext4, ext3, NTFS
Storage drives installed: No
Supported storage drive interfaces: Serial ATA III, Serial ATA II
Disk roaming: Yes
Supported storage drive types: HDD & SSD
Number of M.2 (M & B) slots: 2
Online RAID migration: Yes
RAID rebuild: Yes
Hot-swap drive bays: Yes
Installed storage drive type: No
PCI Express x4 (Gen 3.x) slots: 2
Ethernet LAN (RJ-45) ports: 2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: 4
Fiber optic connector: MTP
USB port: Yes
Fibre Channel: Yes