# NAS QNAP TS-855EU-8G Rack 2U Intel Atom C5125 8GB DDR4 QuTS hero

**URL:** https://aio.lv/en/product--qnap-ts-855eu-8g--9783645
**Data updated:** 2026-01-12 19:31 (EET)
**Category:** NAS Devices & Storage
**Manufacturer:** QNAP
**Manufacturer code:** TS-855eU-8G
**EAN:** 4711103083376
**Warranty:** 3 Years
**Availability:** Available for order
**Price:** 2 125.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 1 757.02 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qnap-ts-855eu-8g--9783645

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Friday | free |
| Pickup points | 01.07.2026 | 1.89 EUR |
| Courier delivery to door | 01.07.2026 | 9.19 EUR |

## Summary description

The QNAP TS-855EU-8G is a 2U rack NAS designed for small and medium businesses. It features an Intel Atom C5125 processor with a frequency of 2.8 GHz and 8 GB of DDR4 memory. The device runs on QuTS hero operating system, providing efficient storage management and data protection. With a total installed storage capacity of 0 TB, it is suitable for users looking to expand their storage solutions.

## Long description

The QNAP TS-855EU-8G Rack 2U is a network-attached storage (NAS) appliance built for small and medium business environments. It is powered by an Intel Atom C5125 processor running at 2.8 GHz and equipped with 8 GB DDR4 memory, and runs the QuTS hero operating system for advanced ZFS-based data management and protection. The 2U rack chassis supports up to eight drives (HDD & SSD) and arrives without preinstalled drives, allowing flexible selection of storage capacities and media types. The unit includes Ethernet LAN connectivity, a black chassis and a compact 2U form factor suitable for server racks.
Advantages
The device provides enterprise-class data integrity and protection through QuTS hero and its ZFS foundations while keeping a low-power Intel Atom C5125 CPU for efficient performance. With support for up to eight drives, the NAS offers scalable storage expansion and RAID options to balance capacity, redundancy and performance. The 2U rack design and rack-mountable chassis enable straightforward integration into standard server cabinets. Weight and colour specifications make the unit easy to plan for physical installation and rack allocation.
Suitable for
 Small and medium-sized business file sharing and centralized storage
 Data protection and backup target with RAID configurations
 Virtualization storage for lightweight VMs or containers
 Media archive and project storage that requires mixed HDD and SSD support
 IT environments requiring rack-mounted, compact 2U hardware
Key specifications
 Model: QNAP TS-855EU-8G (MPN: TS-855eU-8G, EAN: 4711103083376)
 Processor: Intel Atom C5125, 2.8 GHz
 Memory: 8 GB DDR4 (installed)
 Drive bays supported: 8 (HDD & SSD); drives not preinstalled
 RAID: Supported (software/hardware RAID configurations via QuTS hero)
 Operating system: QuTS hero (ZFS-based storage OS)
 Chassis: Rack-mountable 2U, colour: Black
 Ethernet LAN: Yes (network connectivity supported)
 Weight: 7.61 kg
How to use
Install the unit in a standard 19-inch server rack occupying a 2U slot and secure it according to rack-mount instructions. Populate the drive bays with appropriate HDDs or SSDs to meet capacity and performance needs; the device ships without installed drives. Power on the NAS and access the QNAP setup utility via Ethernet from a management workstation. Use the QuTS hero initialization wizard to configure system volumes, create RAID groups, and enable data protection features such as checksums and snapshots. Configure network settings, user accounts, and shared folders for file services (SMB, NFS, AFP) and integrate backup or virtualization targets as required.
Usage recommendations
For balanced performance and redundancy, choose enterprise-class NAS HDDs for bulk capacity and NVMe/SATA SSDs for cache or high-performance pools. Configure RAID levels that match your tolerance for redundancy and capacity (for example RAID 6 or RAID 10 where applicable). Keep QuTS hero firmware and apps updated, monitor system health via the QTS/QuTS management interface, and schedule regular backups or remote replication to a secondary location to ensure long-term data protection.

## Specifications

### Storage

| Feature | Value |
|---|---|
| RAID levels | 1, 5, 10, 50, 60, JBOD |
| Supported file systems | FAT32, HFS+, NTFS, ZFS, exFAT, ext3, ext4 |
| RAID support | Yes |
| Number of storage drives supported | 8 |
| Storage drive sizes supported | 2.5, 3.5 |
| Storage drives installed | No |
| Installed storage drive type | No |
| Supported storage drive types | HDD & SSD |
| Hot-swap drive bays | Yes |
| Storage drive capacity | 0 GB |
| Supported storage drive interfaces | Serial ATA III, Serial ATA II |
| Online RAID migration | Yes |
| Online RAID expansion | Yes |
| Disk roaming | Yes |
| Number of M.2 (M & B) slots | 2 |
| RAID rebuild | Yes |
| Total installed storage capacity | 0 TB |

### Ports & interfaces

| Feature | Value |
|---|---|
| Ethernet LAN (RJ-45) ports | 2 |
| Fiber optic connector | MTP |
| PCI Express x4 (Gen 3.x) slots | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| USB port | Yes |

### Network

| Feature | Value |
|---|---|
| Supported network protocols | IPv4, IPv6 |
| Ethernet LAN | Yes |
| Wake-on-LAN ready | Yes |
| Jumbo frames support | Yes |
| DHCP server | Yes |
| Ethernet LAN data rates | 10, 100, 1000, 2500 |
| iSCSI support | Yes |
| Dynamic DNS (DDNS) | Yes |

### Processor

| Feature | Value |
|---|---|
| Processor model | C5125 |
| Number of processors installed | 1 |
| Processor manufacturer | Intel |
| Processor cores | 8 |
| Processor threads | 8 |
| Processor cache | 9 MB |
| Processor frequency | 2.8 GHz |
| Thermal Design Power (TDP) | 50 W |
| ECC supported by processor | Yes |

### Memory

| Feature | Value |
|---|---|
| Internal memory type | DDR4 |
| Flash memory | 5000 MB |
| Memory slots | 2 |
| Memory form factor | SO-DIMM |
| Maximum RAM supported | 64 GB |
| Internal memory | 8 GB |

### Power

| Feature | Value |
|---|---|
| Power consumption (typical) | 79.113 W |
| Number of power supply units | 1 |
| Power consumption (sleep) | 49.799 W |
| AC input voltage | 100 - 240 |
| Power supply location | Built-in |
| Fan voltage | 12 V |
| Power supply unit (PSU) capacity | 250 W |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 5 - 95 |
| Storage temperature (T-T) | -20 - 70 |
| Operating temperature (T-T) | 0 - 40 |

### Design

| Feature | Value |
|---|---|
| Chassis type | Rack (2U) |
| LED indicators | Y |
| Product colour | Black |
| Number of fans | 3 fan(s) |
| Cooling type | Active |
| Fan diameter | 60 mm |

### Performance

| Feature | Value |
|---|---|
| Type | NAS |
| Security algorithms | AES, FIPS 140, HTTPS, SSH |
| Management protocols | SNMP V2, V3 |
| Browser supported | Apple Safari (latest version) Google Chrome (latest version) Microsoft Edge (latest version) Mozilla Firefox (latest version) |
| Buzzer | Yes |
| Snapshot | Yes |
| Access Control List (ACL) | Yes |
| Reset button | Yes |
| On/off switch | Yes |
| S.M.A.R.T. support | Yes |
| Device class | Small & Medium Business |
| Backup function | Yes |
| Backup features | USB drive, iSCSI LUN |
| Built-in FTP server | Yes |
| System log | Yes |
| Hot spare | Yes |
| Share folder | CIFS/SMB |
| USB copy function | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 7.61 kg |
| Height | 88.6 mm |
| Width | 432 mm |
| Depth | 297.4 mm |

### Software

| Feature | Value |
|---|---|
| Operating system installed | QuTS hero |
| Operating system version | h5.0.1 |
| Windows operating systems supported | Windows 10, Windows 11, Windows 7, Windows 8 |
| Mac operating systems supported | Mac OS X 10.10 Yosemite, Y |
| Linux operating systems supported | CentOS 7.0, Ubuntu 14.04, Y |
| Server operating systems supported | Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019 |
| Other operating systems supported | IBM AIX 7.1, Solaris 10 |

### Other features

| Feature | Value |
|---|---|
| Fibre Channel | Yes |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | AC, LAN (RJ-45) |
| Quick installation guide | Yes |
| Number of screws | 56 |
| Power cables quantity | 1 |

## FAQ

### How much does the NAS QNAP TS-855EU-8G cost, and is it available for purchase?

The price is 2,125.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 25 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Friday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can NAS QNAP TS-855EU-8G be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All QNAP products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized QNAP service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: number of storage drives installed, number of storage drives supported, storage drives installed, raid support, installed storage drive type, supported storage drive types, ethernet lan, chassis type, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for NAS QNAP TS-855EU-8G?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/9783645/64760883_large.webp