Best Dx517 2026

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Last Updated - 22.07.2026

Best Choice

01

Synology

Synology DX517 20 TB (5 x 4 TB WD RED) 5 Bay Desktop Expansion Unit

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Synchronous system operation with DiskStation
Online Volume Expansion
Hot-swappable drive tray
Dedicated local backup solution

1.699,00 €
02

Synology

Synology DX517 10 TB (5 x 2 TB WD RED) 5 Bay Desktop Expansion Unit

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9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Synchronous system operation with DiskStation
Online Volume Expansion
Hot-swappable drive tray
Dedicated local backup solution

1.629,00 €
Value for Money

03

UGREEN

UGREEN NASync DXP2800 2-Bay Desktop NAS, Intel N100 Quad Core Processor, 8GB DDR5 RAM, 2.5GbE Ethernet, 2×M.2 NVMe Slots, HDMI 4K, Network Storage for Home and Office (Hard Drives Not Included)

25% Off Limited Time Deal

25% Off

Limited Time Deal

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9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Your hardware, your choice: Expand your storage without restrictions. With wide support for NAS hard drives from different manufacturers, you can scale capacity and performance individually. Important: Compatible with almost all popular models (except WD Red Plus WD80EFPX).
User-friendly app: Easy setup and easy file sharing on Windows, macOS, Android, iOS, web browsers and smart TVs, so you have secure access from any device.
Secure your own cloud storage: Keep complete control of your data with advanced encryption, so your files and personal information are always protected.
Note: 1. NAS hard drives and NAS HDD are not included and must be purchased separately. 2. Do not modify or reinstall the operating system yourself, do not turn off the device improperly and do not let it become powerless during the system update. Otherwise, this may result in the loss of drivers (e.g. for the network card) and network interference. 3. Actual network transfer speed is limited by factors such as home router, CPU, hard drive and file size; transfer speed may decrease.
More storage, less cost: Unlike expensive cloud storage subscriptions, the NAS only requires a one-time purchase with no ongoing fees and offers significantly more benefits in the long term. Storing your data on site also ensures significantly higher data security and gives you complete control
Huge storage capacity: Store up to 80TB and have more than enough space to back up all your files, photos and videos. Automatically create photo albums and enjoy your personal home theater. (NAS hard drive must be purchased separately)
Best performance in its class: equipped with an Intel N100 processor of the 12th generation and a 2.5GbE network port, this NAS can easily run multiple apps at the same time and transfer a 1GB file in just 3 seconds.
AI Photo Album: Automatically organizes your photos by recognizing faces, scenes, objects and places. It can also immediately remove duplicate photos, freeing up storage space and saving time.

329,99 € 439,99 €(25% Off off)
04

Synology

Synology DS720+ 2 Bay NAS Enclosure

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9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Ready for virtualization: operate common virtual machines in your Synology NAS
Optimal performance and capacity with SSD cache: Built-in M.2 2280 NVMe SSD slots enable fast cache storage without occupying bays
More performance for applications: On average, 15% more performance for photo indexing and other compute-intensive tasks and faster database response
Easy expansion: Increase storage capacity up to 9 drives when needed
Backup and restore data in a flash: Back up important data and speed up recovery with Snapshot Replication

629,00 €
05

TERRAMASTER

TERRAMASTER D8 Hybrid HDD NVMe Enclosure USB 3.2 Gen 2 10Gbps Type C 8Bay USB Storage Supports RAID 0/1/Single/JBOD Exclusive 2+6 RAID Hybrid Disk Array (Diskless)

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Unique 2+6 RAID Mode This USB storage is a hardware RAID. The hard drives in Bays 1 and 2 can be configured as RAID 0, RAID 1, Single Disk or JBOD, while the hard drives in Bays 3 and 4 as well as M.2 2280 NVMe SSDs can work as individual hard drives, which can better meet the different needs of users and provide absolute security for the data.
Innovative storage: The industry's first 8-bay hybrid HDD NVMe SSD enclosure. It can hold 4 SATA HDDs/SSDs and 4 M.2 2280 NVMe SSDs, with a capacity of 24TB per drive and 8TB per M.2 SSD, which provides users up to 128TB (24TB x 4 + 8TB x 4) of storage space and the advantages of the massive capacity of HDDs and the high speed performance of SSDs at the same time
Convenient hard drive replacement: M.2 SSD enclosure features a tool-free hard drive tray that allows easy installation and removal of hard drives without tools. In addition, this raid enclosure features a brand new unique push-lock design from TERRAMASTER, which automatically locks the hard drive tray when you insert the hard drive, so that the hard drive cannot fall out or loosen.
Better Heat Dissipation This hard drive enclosure has an intelligent, temperature-controlled and low-noise fan that automatically adjusts its speed to the temperature of the hard drive. This feature ensures that the hard drive operates at its optimal temperature and provides better heat dissipation.
10Gbps Transfer Bandwidth: This hard drive enclosure uses the USB 3.2 Gen2 protocol for high speed data transfer at up to 10Gbps. With 2 hard drives in bay 1 and 2 in RAID 0, the read/write speed can reach up to 521 MB/s (SATA III NAS HDD 8TB x 2). With 2 SSDs in RAID 0, the read speed can reach 960MB/s (SATA III NAS SSD 1TB x 2), and with an NVMeM.2SSDs it can reach up to 980MB/s.

296,99 €
06

Synology

Synology 2-Bay DiskStation DS723+

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8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Sequential read/write throughput of up to 471/225MB/s makes file operations fast and efficient
Get integrated file and photo management, data protection, virtualization and monitoring solutions
Dual 1GbE ports for easy integration into existing environments with optional 10GbE connectivity for more specialized, bandwidth-intensive applications
Backed by Synology's 3-year limited hardware warranty, which can be extended to 5 years in select markets
Add 5 additional drive bays with a DX517 expansion unit for a maximum of 7 storage drives

689,00 €
07

Synology

Synology DiskStation DS723+ NAS/Storage Server Tower Ethernet LAN Black R1600

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

System memory 2 GB DDR4 ECC
2 x RJ-45 1GbE LAN port
1 x USB 3.2 Gen 1 port

759,90 €
08

SABRENT

SABRENT Hard Drive Docking Station for 2.5"/3.5" SATA HDD & SSD USB-A 5Gbps - External Hard Drive Enclosure USB 3.0 - Docking Station without Hard Drive (EC-DFLT)

33% Off Limited Time Deal

33% Off

Limited Time Deal

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8.4

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide Compatibility The 2.5/3.5 inch hard drive docking station supports 2.5/3.5 inch SATA SDD & HDD up to 22TB. Compatible with Windows 11, Linux, Mac OS 8.0 and above;
Superspeed transmission: hard drive docking station is a good solution to connect your external hard drive to your computer. The hard drive enclosure supports UASP protocol and provides you with a high data transfer rate when used;
Plug & Play: This hard drive enclosure 2.5/3.5 can be installed without tools. The blue LED indicates the operating status - no driver required;
Durable design: ABS shockproof material enclosure protects your hard drive when using. Non-slip base for a secure grip during operation
Buy with confidence: If you encounter any problems during use, please contact us beforehand.

24,99 € 37,19 €(33% Off off)
09

Synology

Synology DX1222 Hard Drive Extension Enclosure Black

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8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Ideal quality
High-quality material
Durability

1.305,78 €
10

Synology

Synology 4-Bay DiskStation DS923+ (Diskless)

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8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Up to 625/559MB/s sequential read/write throughput makes file operations fast and efficient
Leverage integrated file and photo management, privacy, virtualization and monitoring solutions
Dual 1GbE ports for easy integration into existing environments with optional 10GbE connectivity for specialized, bandwidth-intensive applications
Add 5 additional drive bays with a DX517 expansion unit for a maximum of 9 storage drives

999,00 €