QNAP
QNAP TS-855eU-RP-8G-US 8-Bay 2U Rackmount NAS
PCIe Gen 3
High-Speed, Short-Depth NAS for Demanding ApplicationsThe QNAP TS-855eU-RP-8G-US is a high-performance 8-bay rackmount NAS designed for businesses needing fast data access and reliable storage. Its short-depth design makes it ideal for space-constrained environments, while its powerful hardware e...
$1,999.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.
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Overview
High-Speed, Short-Depth NAS for Demanding Applications
The QNAP TS-855eU-RP-8G-US is a high-performance 8-bay rackmount NAS designed for businesses needing fast data access and reliable storage. Its short-depth design makes it ideal for space-constrained environments, while its powerful hardware ensures smooth operation.
- Processor: Intel Atom C5125 8C 2.8GHz
- Memory: 8GB SODIMM DDR4 RAM (up to 64GB with ECC Support)
- Ethernet Ports: Dual 2.5GbE (2.5G/1G/100M)
- M.2 Slots: Dual M.2 PCIe Gen 3 x4 NVMe SSD slots
- PCIe Slots: Dual PCIe Gen 3 x4 slots
- Power Supply: Redundant 300W PSU
- Drive Bays: 8
Key Features
Intel Atom C5125 8C 2.8GHz processor and 8GB SODIMM DDR4 RAM (up to 64GB with ECC Support)
Dual 2.5GbE (2.5G/1G/100M) ports accelerates file sharing across teams and devices or streamline large file transfers
Dual M.2 PCIe Gen 3 x4 NVMe SSD slots enable cache acceleration or SSD storage pools for improved performance
Dual PCIe Gen 3 x4 slots allow for installing additional Network adapters, QM2 cards, or Fibre Channel cards to increase application performance
Backup Google Workspace & Microsoft 365 accounts and files to NAS with Boxafe
Specifications
Brand
QNAP
Model
TS-855eU-RP-8G-US
Form Factor
8-Bay 2U Rackmount NAS
Processor
Intel Atom C5125 8C 2.8GHz
RAM (Included)
8GB SODIMM DDR4
RAM (Max)
Up to 64GB (with ECC Support)
Ethernet Ports
Dual 2.5GbE (2.5G/1G/100M)
M.2 SSD Slots
Dual M.2 PCIe Gen 3 x4 NVMe
PCIe Slots
Dual PCIe Gen 3 x4
Backup Feature
Google Workspace & Microsoft 365 accounts and files to NAS with Boxafe
Pros & Cons
👍 Pros
- Powered by an Intel Atom C5125 8C 2.8GHz processor, providing robust computing power for various tasks.
- Comes with 8GB SODIMM DDR4 RAM, expandable up to 64GB with ECC Support for enhanced reliability.
- Dual 2.5GbE ports accelerate file sharing and large file transfers across teams and devices.
- Dual M.2 PCIe Gen 3 x4 NVMe SSD slots enable cache acceleration or high-performance SSD storage pools.
- Dual PCIe Gen 3 x4 slots allow for flexible expansion with additional network adapters, QM2 cards, or Fibre Channel cards.
👎 Cons
- The Intel Atom C5125 processor, while 8-core, may not match the raw processing power of higher-tier server CPUs for extremely demanding applications.
- While expandable, the base 8GB RAM may be limiting for highly virtualized environments or massive concurrent user loads.
- The 2.5GbE ports, while faster than 1GbE, are not as fast as 10GbE or higher options without additional PCIe card upgrades.
- Utilizing the M.2 NVMe slots for cache acceleration reduces the available bays for traditional hard drives if maximum storage capacity is desired.
- The dual PCIe Gen 3 x4 slots offer expansion, but using both might restrict other potential internal upgrades or specific card requirements.
Frequently Asked Questions
Can the RAM in the QNAP TS-855eU-RP-8G-US be upgraded?
Yes, the NAS comes with 8GB SODIMM DDR4 RAM and is expandable up to 64GB with ECC Support.
What is the benefit of having dual 2.5GbE ports on this NAS?
Dual 2.5GbE ports accelerate file sharing across teams and devices, streamlining large file transfers for improved network performance.
Are the M.2 NVMe SSD slots used for storage or caching?
The dual M.2 PCIe Gen 3 x4 NVMe SSD slots can be used for either cache acceleration or creating SSD storage pools, improving performance.
What kind of processor powers this QNAP NAS?
This QNAP NAS is powered by an Intel Atom C5125 8C 2.8GHz processor, providing eight cores for processing tasks.
Can I add 10GbE networking to this rackmount NAS?
Yes, the dual PCIe Gen 3 x4 slots allow for installing additional network adapters, including potential 10GbE cards, to increase application performance.
Does this NAS offer backup solutions for cloud services?
Yes, it supports backing up Google Workspace & Microsoft 365 accounts and files to the NAS using Boxafe.
Is this NAS suitable for virtualization workloads?
With an 8-core Intel Atom processor and expandable RAM up to 64GB with ECC support, it offers a solid foundation for virtualization, depending on the specific workload demands.
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