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QNAP TS-855eU Series
Ideal for space-limited factory surveillance or office file center


Size reduction

38 %

Powerful CPU

8 Cores


2.5 GbE

Available till

Year 2027


Short-depth NAS for smaller racks.
Easy & flexible


Featuring a short depth design of only 11.7 inches ( 297.4 mm ), the TS-855eU series is an excellent choice for smaller racks, wall-mount AV rack cabinets, and network rack cabinets for saving space!


Factory Production Lines ✕
Video Surveillance

Short depth NAS and equipment are suitable for wall mount rack cabinet, allowing production lines to maximize their space utilization. The TS-855eU-RP features redundant power supply with up to 64 GB RAM, making it an ideal surveillance solution for manufacturing facilities and factories.


Offices ✕
File Storage and Backup

The 2.5GbE-ready TS-855eU delivers high performance and expansion capabilities while supporting backup scheduling, file sync, and snapshots to protect NAS data. You can add 10GbE connectivity through PCIe Gen slots to boost virtualization storage, virtual machines, and containerized apps.


Scalable for backup and long-term archiving

The TS-855eU NAS supports up to 154 TB1 storage capacity. Up to 48 hard drives can be added by connecting multiple storage expansion units to attain higher storage capacity.

TS-855eU NAS with high storage capacity

Support and availability up to 2027, suited for long-term projects

Intel® Atom® C5125 8-core 2.8GHz processor

Up to 64 GB memory ( supports ECC memory )

2x 2.5GbE as standard

2x M.2 PCIe slots, allows adding an M.2 SSD storage pool2

2x PCIe Gen 3 slots, supports 10GbE adapters or adding M.2 SSD slots2


  1. Physical capacity when installing eight 22 TB HDDs in the NAS with RAID 5 configuration. Effective capacity will be decreased.
  2. M.2 SSDs, QM2 cards, network expansion cards, and compatible cables are sold separately.

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