QNAP TS-855EU-8G-US

Overview

The QNAP TS-855EU-8G-US is an 8-bay rackmount NAS enclosure designed to deliver flexible and high-performance storage in a compact 2U short-depth form factor. It supports both 2.5-inch and 3.5-inch SATA drives, along with M.2 NVMe SSD slots for caching, which enhances data access speeds. Powered by an 8-core Intel Atom processor and equipped with 8GB of RAM, this NAS handles demanding workloads such as file sharing and virtualization with ease, making it a strong choice for small to medium-sized businesses and IT professionals.

Key features

• 2U short-depth rackmount design that fits into small racks and network cabinets, saving valuable space.
• Support for up to eight SATA drives, allowing flexible storage configurations with both 2.5-inch and 3.5-inch drives.
• Dual 2.5GbE network ports provide fast and reliable data transfer speeds essential for handling large files and backups.
• M.2 NVMe SSD slots enable caching to significantly improve system responsiveness and reduce latency.
• Runs on QNAP’s QuTS hero operating system, offering advanced data management, protection, and easy maintenance.
• Two PCIe slots allow future expansion options such as additional network cards or storage controllers.
• Four USB 3.2 ports support a variety of external devices, enhancing connectivity and peripheral integration.
• Supports multiple RAID configurations including 0, 1, 5, 6, 10, 50, and 60, providing options to balance speed and data redundancy.
• Expandable memory up to 64GB RAM to accommodate growing performance demands.

Key specs

• Processor: 8-core Intel Atom
• Memory: 8GB RAM (expandable up to 64GB)
• Drive bays: 8 (supports 2.5-inch and 3.5-inch SATA drives)
• M.2 slots: NVMe SSD slots for caching
• Network: Dual 2.5GbE ports
• Expansion: 2 PCIe slots
• USB ports: 4 x USB 3.2
• Form factor: 2U short-depth rackmount
• RAID support: 0, 1, 5, 6, 10, 50, 60

Connectivity and compatibility

This NAS offers versatile connectivity options to integrate smoothly into existing network environments. The dual 2.5GbE ports ensure faster network throughput compared to standard Gigabit Ethernet, which benefits teams working with large data sets or frequent backups. The four USB 3.2 ports allow connection of external storage, printers, or other peripherals, expanding the device’s functionality. Two PCIe slots provide room for future upgrades such as 10GbE network cards or additional storage controllers, making it adaptable to evolving business needs.

Performance and reliability

Equipped with an 8-core Intel Atom processor and 8GB of RAM, the TS-855EU-8G-US delivers smooth multitasking and efficient handling of demanding applications like virtualization and file sharing. The inclusion of M.2 NVMe SSD caching reduces latency and accelerates data access, improving overall system responsiveness. Multiple RAID options allow users to tailor the balance between performance and data protection, ensuring critical information remains safe without sacrificing speed. The QuTS hero operating system adds enterprise-grade data management and protection features, enhancing reliability and ease of use.

Ideal uses and environments

This NAS enclosure fits well in small to medium-sized business environments, IT departments, and professional setups that require a compact yet powerful storage solution. Its short-depth design is perfect for racks or cabinets with limited space, while the flexible drive support and expansion options make it suitable for growing storage needs. It works well for teams that handle large files, run virtual machines, or need reliable backup and data protection. The device’s performance and connectivity features also make it a strong choice for remote offices or branch locations requiring efficient network storage.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

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We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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