QNAP TS-855EU-8G NAS & Storage Server Rack (2U) Intel Atom® C5125 8GB DDR4 0TB QuTS hero Black

The TS-855eU 2.5GbE NAS with shallow depth is designed for flexible IT deployment and comprehensive virtualization applications, fitting easily into a compact rack in offices or audio-visual rooms. Equipped with an Intel® 8-core processor, the TS-855eU provides excellent performance and computing advantages to enable fast data access, backup/recovery, file server, and virtualization applications. The TS-855eU comes standard with the QTS operating system and can be switched to the ZFS-based QuTS hero operating system as needed. The TS-855eU will be available and supported by QNAP for an extended period (until 2027), making it ideal for businesses requiring suitable NAS models for long-term projects.

Compact, space-saving
The TS-855eU, with an installation depth of only 11.7 inches (297.4 mm), is perfect for installation in a compact rack or in locations with many cables.

Flexible Storage Expansion
Connect TL-R1620Sep-RP / TL-R1220Sep-RP JBOD units to the TS-855eU to provide up to 48 additional drive capacities for your business growth.

Dual 2.5GbE Connectivity
Features two 2.5GbE ports (backward 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 Fibre Channel cards.

Optimized SSD Performance
Two M.2 PCIe NVMe slots enable SSD caching, SSD storage pools, or Qtier™ auto-tiering storage.

Virtual Machines and Containers
Centralize your virtualization storage and host multiple virtual machines and containerized applications.

2U Short Depth Design for up to 38% Smaller Size
The rackmount TS-855eU has a shallow depth of only 11.7 inches (297.4 mm), making it an excellent choice for smaller racks, wall-mounted AV rack cabinets, and network rack cabinets. The space saved by the shallow depth can be used for cabling or ventilation. The TS-855eU is space-saving for flexible deployment and is particularly suitable for compact offices, audio-visual environments, and security surveillance recordings.

Ultimate 8-Core Performance with up to 64GB RAM and Intel® QuickAssist Technology
Designed for heavy enterprise workloads, the TS-855eU delivers exceptional 8-core performance for running multiple tasks simultaneously. AES-NI encryption and Intel® QuickAssist Technology (QAT) are supported to offload compute-intensive compression and enhance IPsec/SSL cryptographic performance. Up to 64GB of ECC RAM is supported. Combining high performance, reliability, and capacity, the TS-855eU is a versatile, budget-friendly storage solution for various applications such as file servers, high-speed storage/backup/recovery, and virtualization.

Affordable 2.5GbE Meets High Bandwidth Requirements
With two 2.5GbE RJ45 LAN ports (backward compatible with 1G/100M), the TS-855eU allows businesses to easily upgrade network speed from 1 Gigabit to 2.5 Gigabit using existing CAT5e cables. Port trunking and failover also support applications requiring higher bandwidth and reliability, such as virtualization, large file transfers, high-speed backup/recovery, and real-time applications. QNAP also offers numerous managed/unmanaged 2.5GbE/10GbE switches to help businesses implement fast, secure, and scalable network environments without exceeding their budget.

SSD Caching
Configure SSD caching with M.2 SSDs for optimal I/O and lower latency without occupying 3.5-inch drive bays.

Auto-Tiering
Qtier™ technology enables the TS-855eU to auto-tier to continuously optimize storage efficiency across all installed storage devices.

Faster Image Recognition with Edge TPU
The Coral M.2 Accelerator with Edge TPU provides an affordable solution for leveraging AI acceleration for faster image recognition in your NAS applications.

Diverse I/O Capabilities with PCIe Expansion
The TS-855eU features two PCIe 3 x4 slots for installing various expansion cards to extend application potential.

5/10/25GbE Network Cards
Enables lightning-fast data throughput for bandwidth-intensive tasks (virtualization, large-scale data transfer, and fast backup/recovery).

QM2 Card
Adds M.2 SSDs or 2.5GbE/10GbE connectivity to the TS-855eU to optimize performance and bandwidth.

SAS / SATA Storage Expansion Cards
Connect the TS-855eU to SAS 12Gb/s or SATA 6Gb/s expansion units for petabyte-scale storage capacity.

Building a Cost-Effective Fibre Channel SAN Environment
Common Fibre Channel Storage Area Network (SAN) devices are often costly. By installing QNAP dual-port 16Gb Fibre Channel expansion cards in the TS-855eU, you have more budget-friendly options to add a NAS to a SAN environment. With the iSCSI & Fibre Channel app, you can set a Fibre Channel target. Additionally, LUN masking and port binding features provide an extra layer of security for your data.

Multi-Version Snapshots Mitigate Ransomware Threats
The TS-855eU supports block-based snapshots that record the state of the system at any time. This helps protect data that can be restored at any point, significantly mitigating the threat of ransomware.

Reliable, High-Performance Storage for Virtualization
The TS-855eU supports block-based iSCSI LUNs as a reliable, high-performance, and affordable storage solution for common virtualization environments. It supports VMware® VAAI and Microsoft® ODX to boost performance by offloading server loads for ESXi servers and Hyper-V accordingly.

All-in-One Solution for Hosting Virtual Machines and Containers
By running multiple virtual machines and containers on the TS-855eU, you can deploy multi-user environments and applications to increase management efficiency and save hardware costs. In conjunction with the Network & Virtual Switch app, which improves interoperability between virtual machines, containers, QNAP NAS, and other physical devices on the network, you can flexibly allocate physical and virtual network resources and simplify network deployment.

Comprehensive Security and Permission Settings
The TS-855eU is equipped with flexible permission settings and security measures. In addition to IP blocking, QNAP Authenticator, and HTTPS connection, there are other apps that ensure optimal protection of the NAS from threats such as malware and hackers.

The Best File Archiving and Collaboration Center
The TS-855eU integrates extensive applications for storing, managing, synchronizing, searching, and archiving files. It supports SMB/CIFS, AFP, and NFS protocols for optimized file sharing across Windows®, Mac®, and Linux®/UNIX® and provides the smartest NAS solution for professional management of your files.

Short-Depth Surveillance NAS - Ideal Video Surveillance Solution for Factories
The short TS-855eU is excellent for wall-mounting in rack cabinets or IT rooms with limited space, allowing production lines to maximize their space. Companies can benefit from the TS-855eU as an all-in-one surveillance NAS, designed with excellent hardware performance and integrated QNAP surveillance software, leveraging its large capacity, high expandability, and high transmission efficiency to build the most cost-effective and reliable surveillance system in production facilities and factories.

Smart Surveillance Solution for 24/7 Security
QVR Elite is QNAP's subscription-based intelligent surveillance solution that allows you to easily build a surveillance system with lower TCO and higher scalability. Recordings are saved as MP4 files, allowing playback on almost any device. QVR Elite also integrates QNAP AI-based solutions to create intelligent facial recognition for retail and door access systems with a QNAP NAS. You can set up dedicated, independent storage space for surveillance data on the TS-855eU and benefit from simplified camera management, storage allocation, camera live view, and playback.

Flexible and Cost-Effective Storage Expansion
QNAP offers easy ways to expand your storage capacity. Here are various options to expand your TS-855eU storage as needed to handle data and business growth.

More Productivity-Enhancing Applications
The TS-855eU features an App Center that contains feature-rich apps to expand your NAS potential!