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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
Technical specifications
| Maximum RAM supported | 64 GB |
|---|---|
| Server operating systems supported | Windows Server 2012 |
| Fan voltage | 12 V |
| Server operating systems supported | Windows Server 2019 |
| Backup features | USB drive |
| Power consumption (sleep) | 49.799 W |
| Online RAID expansion | Yes |
| Number of screws | 56 |
| Server operating systems supported | Windows Server 2012 R2 |
| Server operating systems supported | Windows Server 2016 |
| Supported file systems | FAT32 |
| Hot-swap drive bays | Yes |
| Depth | 297.4 mm |
| Storage drive capacity | 0 GB |
| S.M.A.R.T. support | Yes |
| On/off switch | Yes |
| Supported file systems | ext4 |
| System log | Yes |
| Number of M.2 (M & B) slots | 2 |
| Supported file systems | ZFS |
| Other operating systems supported | IBM AIX 7.1 |
| Ethernet LAN | Yes |
| Supported network protocols | IPv4, IPv6 |
| Installed storage drive type | No |
| Supported file systems | ext3 |
| Supported file systems | NTFS |
| Hot spare | Yes |
| Chassis type | Rack (2U) |
| Supported file systems | HFS+ |
| Backup features | iSCSI LUN |
| Number of storage drives supported | 8 |
| Supported file systems | exFAT |
| Processor manufacturer | Intel |
| Snapshot | Yes |
| Other operating systems supported | Solaris 10 |
| Dynamic DNS (DDNS) | Yes |
| Access Control List (ACL) | Yes |
| Device class | Small & Medium Business |
| Height | 88.6 mm |
| Share folder | CIFS/SMB |
| Buzzer | Yes |
| USB copy function | Yes |
| RAID rebuild | Yes |
| Server operating systems supported | Windows Server 2008 R2 |
| Weight | 7.61 kg |
| DHCP server | Yes |
| Flash memory | 5000 MB |
| Online RAID migration | Yes |
| Security algorithms | SSH |
| PCI Express x4 (Gen 3.x) slots | 2 |
| Fibre Channel | Yes |
| Package type | Box |
| Linux operating systems supported | CentOS 7.0 |
| Width | 432 mm |
| Backup function | Yes |
| Storage drive sizes supported | 2.5 |
| Supported storage drive interfaces | Serial ATA III, Serial ATA II |
| Thermal Design Power (TDP) | 50 W |
| Storage drive sizes supported | 3.5" |
| Linux operating systems supported | Ubuntu 14.04 |
| Management protocols | SNMP V2, V3 |
| Power supply unit (PSU) capacity | 250 W |
| Security algorithms | AES |
| Security algorithms | HTTPS |
| Storage drives installed | No |
| Browser supported | Apple Safari (latest version) Google Chrome (latest version) Microsoft Edge (latest version) Mozilla Firefox (latest version) |
| Reset button | Yes |
| iSCSI support | Yes |
| Built-in FTP server | Yes |
| Package weight | 10.9 kg |
| Operating system installed | QuTS hero |
| Fan diameter | 6 cm |
| Number of processors installed | 1 |
| AC input voltage | 100 – 240 V |
| LED indicators | Yes |
| Total installed storage capacity | 0 TB |
| RAID support | Yes |
| USB port | Yes |
| Memory slots | 2 |
| Operating system version | h5.0.1 |
| Power supply location | Built-in |
| Warranty period | 3 year(s) |
| Security algorithms | FIPS 140 |
| Type | NAS |
| Disk roaming | Yes |
| Ethernet LAN (RJ-45) ports | 2 |
| Number of power supply units | 1 |
| Product colour | Black |
| Processor family | Intel Atom® |
| Wake-on-LAN ready | Yes |
| Supported storage drive types | HDD & SSD |
| Linux operating systems supported | Yes |
| Jumbo frames support | Yes |
| Number of fans | 3 fan(s) |
| Ethernet LAN data rates | 100 |
| Power cables quantity | 1 |
| Ethernet LAN data rates | 10 |
| Fiber optic connector | MTP |
| Ethernet LAN data rates | 2500 Mbit/s |
| Ethernet LAN data rates | 1000 Mbit/s |
| Warnings | Do not dispose of the device in the regular rubbish bin. The product requires special disposal. |
| Warnings | Avoid contact with liquids. |
| Warnings | Do not dismantle the appliance yourself. |
| Internal memory | 8 GB |
| RAID levels | 5 |
| Processor cache | 9 MB |
| RAID levels | 0 |
| RAID levels | JBOD |
| Mac operating systems supported | Mac OS X 10.10 Yosemite |
| RAID levels | 50 |
| Processor frequency | 2.8 GHz |
| Package width | 530 mm |
| Processor threads | 8 |
| Cooling type | Active |
| Memory form factor | SO-DIMM |
| Storage temperature (T-T) | -20 – 70 °C |
| Package depth | 210 mm |
| Quick installation guide | Yes |
| RAID levels | 10 |
| Processor cores | 8 |
| Cables included | LAN (RJ-45) |
| RAID levels | 1 |
| Package height | 592 mm |
| Windows operating systems supported | Windows 8 |
| Windows operating systems supported | Windows 11 |
| ECC supported by processor | Yes |
| Windows operating systems supported | Windows 7 |
| Power consumption (typical) | 79.113 W |
| Windows operating systems supported | Windows 10 |
| Cables included | AC |
| Mac operating systems supported | Yes |
| RAID levels | 60 |
| Operating relative humidity (H-H) | 5 – 95% |
| Processor model | C5125 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| Operating temperature (T-T) | 0 – 40 °C |
| Internal memory type | DDR4 |
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