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Restock 21-Aug-2026 Estimated, Out of Stock Prices are Estimated.

RRP €4142.86
2399.75 Incl Vat




Overview

Range/Series Overview


IMPORTANT: This Range/Series overview section describes the range of which this product belongs. Features of different versions might be mentioned and may not apply to the specific product on this page. Please view Specs for specification of product.

Designed for flexible IT deployment and comprehensive virtualization applications, the short-depth TS-855eU 2.5GbE NAS can easily fit in a compact rack in offices or audiovisual rooms. Powered by an Intel 8-core processor, the TS-855eU packs excellent performance and computing benefits to empower fast data access, backup/restoration, file server, and virtualization applications.


Features Summary

  • Compact, space saving
    The TS-855eU is perfectly suited for installation in a compact rack, or places with a lot of cabling.
  • Dual 2.5GbE connectivity
    Features two 2.5GbE ports (backwards compatible with 1G/100M). Supports port trunking for enhanced performance and fault tolerance.
  • PCIe expandability
    Features two PCIe Gen 3 slots for installing 5/10/25GbE network cards, QM2 cards or Fiber Channel cards.
  • Optimized SSD performance
    Dual M.2 PCIe NVMe slots enable SSD caching, SSD storage pools, or Qtier auto-tiered storage.
  • Virtual machines and containers
    Centralize your virtualization storage, and host multiple virtual machines and containerized apps.

Specification Summary

Product Description
QNAP TS-855eU - NAS server
Device Type
NAS server
Host Connectivity
Gigabit Ethernet / 2.5 Gigabit Ethernet
Enclosure Type
Rack-mountable - 2U
Installed Devices / Modules Qty
0 (installed) / 8 (max)
Dimensions (WxDxH)
43.2 cm x 29.74 cm x 8.86 cm
Weight
7.61 kg ()
Processor
1 x Intel Atom C5125 2.8 GHz (8-core)
Storage Controller
RAID SATA 6Gb/s RAID 0, 1, 5, 6, 10, 50, 60, TM, RAID TP
Networking
10Mb LAN, 100Mb LAN, 1GbE, 2.5GbE
Performance
Concurrent connections (CIFS): 2000 - (with maximum memory) ¦ Maximum pool size: 5 PB ¦ Maximum number of storage pool: 128 ¦ Maximum shared folder size: 5 PB ¦ Maximum number of shared folder: 256 ¦ Maximum LUN size: 1024 TB ¦ Maximum number of targets LUN: 128 ¦ Minimum snapshot interval: 1 minute ¦ Maximum FTP connection: 1024 ¦ Local user account: 16000 ¦ Local group account: 512 ¦ Domain user/group account: 200000 ¦ Log recording: 3000 events per second ¦ Virtual hosts: 32 ¦ Maximum number of version control: 64
RAM
8 GB
Power
AC 100-240 V
Storage Operating System
QNAP QuTS hero h5.0.1 / QTS 5.0.1
System Requirements
Apple MacOS X 10.10 or later, Ubuntu 14.04, CentOS 7.0, Red Hat Enterprise Linux 6.6, SuSE Linux 12 or later, IBM AIX 7, Oracle Solaris 10 or later, Microsoft Windows 7 / 8 / 10 / 11, Microsoft Windows Server 2008 R2, Microsoft Windows Server 2012, Microsoft Windows Server 2012 R2, Microsoft Windows Server 2016, Microsoft Windows Server 2019
Manufacturer Warranty
3-year warranty

Specifications

EAN / GTIN:
5054444534534
General
Device Type
NAS server
Host Connectivity
Gigabit Ethernet / 2.5 Gigabit Ethernet
Enclosure Type
Rack-mountable - 2U
Total Storage Capacity
0 GB
Installed Devices / Modules Qty
0 (installed) / 8 (max)
Width
43.2 cm
Depth
29.74 cm
Height
8.86 cm
Weight
7.61 kg ()
Built-in Devices
Led panel
Processor / Memory
Processors Installed
1 x Intel Atom C5125 2.8 GHz
Number of Cores
8-core
Max Supported Qty
1
RAM
8 GB (installed) / 64 GB (supported) - DDR4
Flash Memory Installed
5 GB
Storage Controller
Type
RAID
Interface Type
SATA 6Gb/s
RAID Level
RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, RAID 50, RAID 60, RAID TM, RAID TP
Networking
Data Link Protocol
10Mb LAN, 100Mb LAN, 1GbE, 2.5GbE
Network / Transport Protocol
IPv4, IPv6, DDNS, DHCP, SMB, iSCSI, FTP, QuFTP, SFTP, TFTP
Remote Management Protocol
SNMP 2, SNMP 3, SSH, Telnet, HTTP, HTTPS, TFTP, SFTP, RADIUS
Network Services Compatibility
Microsoft CIFS, Apple File Protocol (AFP), Server Message Block (SMB), Network File System v3 (NFS v3), Network File System v4 (NFS v4), Web-based Distributed Authoring and Versioning (WebDAV), DHCP, DDNS, HTTP, HTTPS, FTP, SFTP
Performance
Concurrent connections (CIFS): 2000 - (with maximum memory) ¦ Maximum pool size: 5 PB ¦ Maximum number of storage pool: 128 ¦ Maximum shared folder size: 5 PB ¦ Maximum number of shared folder: 256 ¦ Maximum LUN size: 1024 TB ¦ Maximum number of targets LUN: 128 ¦ Minimum snapshot interval: 1 minute ¦ Maximum FTP connection: 1024 ¦ Local user account: 16000 ¦ Local group account: 512 ¦ Domain user/group account: 200000 ¦ Log recording: 3000 events per second ¦ Virtual hosts: 32 ¦ Maximum number of version control: 64
Features
RAID migration, EXT4 file system, ACL support, port trunking, DHCP server, VLAN support, anti-malware protection, firewall protection, Qsync, hybrid backup sync, Qsirch, QuMagie, VPN support, LDAP support, RADIUS support, file station, SQL Server, Qfiling, QmailAgent, QuWAN, Q'center (NAS CMS), built-in hardware transcoding, WOL, Jumbo Frames support, SFTP server
Encryption Algorithm
AES-NI, FIPS 140-2, 256-bit AES
Expansion / Connectivity
Expansion Bays
8 (total) / 8 (free) x hot-swap - 2.5" / 3.5"
Expansion Slots
2 (total) / 1 (free) x SO-DIMM 260-pin ¦ 2 (total) / 2 (free) x M.2 2280 ¦ 2 (total) / 2 (free) x PCI Express 3.0 x4
Interfaces
2 x 2.5 Gigabit Ethernet - RJ-45 ¦ 4 x USB 3.2 Gen 1 - Type A
Miscellaneous
Cables Included
1 x network cable
Features
Secure Erase, built-in 3 x 60 mm cooling fans, alarm buzzer, dual boot, S.M.A.R.T. support, wake on LAN, array roaming, on/off power switch, reset switch
Compliant Standards
TLS v1.0, TLS v1.1, TLS v1.2, TLS v1.3
Included Accessories
24 x flat head screws (for 2.5" HDD), 32 x flat head screws (for 3.5" HDD), power cable
Power
Power Device
Internal power supply
Voltage Required
AC 100-240 V
Power Consumption Operational
79.113 Watt (with drives fully populated)
Power Provided
250 Watt
Software / System Requirements
Storage Operating System
QNAP QuTS hero h5.0.1 / QTS 5.0.1
Software Included
IronWolf Health Management, McAfee
OS Required
Apple MacOS X 10.10 or later, Ubuntu 14.04, CentOS 7.0, Red Hat Enterprise Linux 6.6, SuSE Linux 12 or later, IBM AIX 7, Oracle Solaris 10 or later, Microsoft Windows 7 / 8 / 10 / 11, Microsoft Windows Server 2008 R2, Microsoft Windows Server 2012, Microsoft Windows Server 2012 R2, Microsoft Windows Server 2016, Microsoft Windows Server 2019
Manufacturer Warranty
Service & Support
Limited warranty - 3 years
Environmental Parameters
Min Operating Temperature
0 °C
Max Operating Temperature
40 °C
Humidity Range Operating
5 - 95% RH (non-condensing)

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