Description
The QNAP TS-855eU-8G is a 2U short-depth rackmount NAS engineered for high-performance virtualization, efficient storage management, and flexible IT deployments. Powered by an Intel® Atom® C5125 Octa-core processor (2.8GHz) and equipped with 8GB DDR4 SDRAM (expandable up to 64GB ECC), it delivers exceptional computing power for multi-tasking business applications.
With support for up to eight 2.5"/3.5" SATA drives and eight SSDs, the TS-855eU-8G offers versatile storage configurations and advanced RAID protection (RAID 0, 1, 5, 6, 10, 50, 60, JBOD). Dual 2.5GbE network ports enable high-speed connectivity with port trunking and failover support, while two PCIe Gen 3 slots provide expandability for 5/10/25GbE network cards, QM2 cards, or Fibre Channel adapters.
This NAS is perfect for centralized file storage, high-speed backup/recovery, virtualization environments, and containerized applications. With QTS 5.0.1 pre-installed (and the option to switch to the ZFS-based QuTS hero OS), users gain robust data integrity features, SSD caching, and tiered storage capabilities. Compact at just 11.7 inches deep, it fits into small racks, AV cabinets, or network enclosures, making it an ideal choice for space-conscious deployments.
| Specification | Details |
|---|---|
| Processor | Intel Atom C5125 Octa-Core 2.80 GHz |
| Memory | 8 GB DDR4 SDRAM (Expandable to 64 GB ECC) |
| Drive Bays | 8 x 2.5"/3.5" SATA (HDD/SSD) |
| RAID Support | 0, 1, 5, 6, 10, 50, 60, JBOD |
| Flash Memory | 5 GB |
| Network Ports | 2 x 2.5GbE (RJ-45) |
| USB Ports | 4 x USB 3.2 Gen 1 |
| Expansion Slots | 2 x PCIe Gen 3 x4 |
| Controller | Serial ATA/600, Serial ATA/300 |
| OS | QTS 5.0.1 (Upgradeable to QuTS hero) |
| Protocols | LDAP, HTTPS, L2TP, SFTP, DHCP, SSH, IPSec, FTPS, AFP, FTP, CIFS/SMB, SNMPv2, IPv4/IPv6, WebDAV, iSCSI, NFS, etc. |
| Form Factor | 2U Rackmount, Short Depth (11.7") |
| Power Supply | 250W |
| Weight | 16.78 lbs |
| Warranty | 3 Years Limited |
Payment & Security
Your payment information is processed securely, and we do not store credit card details or access your credit card information.
Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
A decade of delivery — trusted by 275+ clients across industries
