Synology DS425+

Name: Synology DS425+
Brand: Synology
SKU: 966925
Price: 512 EUR
Availability: InStock
Rating: 9.2 (3 reviews)

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Specifications

Product information

Key specs

	Number of hard drive slots	4
	Suitable for hard drive size	2.5-inch SSD, 3.5-inch HDD
	Internal RAM	2 GB
	Processor cores	Quad-Core (4)
	Built-in hard drive

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Pros and cons

According to our NAS expert

You can place 4 HDDs and 2 M.2 NVMe SSDs in this NAS for up to 80TB storage.
You can assemble different RAID setups in this NAS.
You can store images on the Synology Drive Server of this NAS, and manage and edit them from every connected device.
This NAS doesn't include hard drives or SSDs, view our accessories for this.

Description

Store large business files and create backups of PCs with the Synology DS425+ NAS server. This NAS has 4 slots for hard drives and an 80TB storage space. This allows you to store backups of business laptops or PCs for your company. You can also place up to 4 SSDs of 2.5 inches or 3.5 inches in the NAS. There's also space for 2 M.2 NVMe SSDs in the DS425+. You can create various RAID setups with the NAS. This allows you to create 1 large storage space. With these hard drives, you can open frequently used files faster. Thanks to 2GB internal RAM and the Intel Celeron J4125 processor, you can use the NAS with 15 users at the same time. The NAS has 2 Ethernet ports with a 2500Mbps speed. That way, you can quickly transfer files to the DS425+.

Tips for using this product

Included by default

Manual
Installation manual
Power cord
Power adapter
RJ-45 LAN cable (2x)

Reviews

Rating

5 stars

4 stars

3 stars

2 stars

1 star

Most helpful reviews

Review is 8,0 out of 10.

Unfortunately, only Synology HDDs are supported

Trusted Synology software
From the 2025 models onwards, only Synology HDDs are supported

My migration from a Synology DS415+ to this Synology DS425+ went smoothly. I transferred the existing WD Red HDDs, and they work in the new NAS (although the drive status remains "Migrated from another system"). If I wanted to add a new WD Red HDD, that's not possible (short of a hack). In that case, I'd have to opt for a Synology HDD.

Review by:
Marcel
Date:
20 August 2025
Translation:
Automatically translated from Nederlands

Review is 10 out of 10.

Top device

Top device
I installed 16GB of memory and it works even better!
Very quiet

Synology just works well. I bought this to replace the DS412 and transferring everything was very easy.

Review by:
Jan Janssen
Date:
12 March 2026
Translation:
Automatically translated from Nederlands

Review is 9,6 out of 10.

Complete NAS from Synology

Migration from DS415play works great
Fast
DSM
Price maybe

Transferring drives from the DS415play to the 425+ was easy. They are Seagate and WD drives, so not officially supported by Synology, but they were immediately recognized and migrated. Data and settings were transferred without loss. DSM 7.3 was installed before the migration, so thankfully the non-Synology drives worked just fine.

Otherwise, it's a fantastic, fast NAS. I highly recommend it.

Review by:
Werner Boogaard
Date:
22 November 2025
Translation:
Automatically translated from Nederlands

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- 512,-
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Reviews
Suitable for hard drive size
- 2.5-inch SSD, 3.5-inch HDD
- 2.5-inch SSD, 3.5-inch HDD, M.2 NVMe
- 2.5-inch SSD, 3.5-inch HDD, M.2 NVMe
- 2.5-inch SSD, 3.5-inch HDD
- 2.5-inch SSD, 3.5-inch HDD, M.2 NVMe

Internal RAM
- 2 GB
- 4 GB
- 8 GB
- 4 GB
- 4 GB

Processor cores
- Quad-Core (4)
- Quad-Core (4)
- Penta-Core (5)
- Quad-Core (4)
- Quad-Core (4)

Number of hard drive slots
- 4
- 4
- 4
- 4
- 4

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Insure your NAS

Coolblue takes care of everything, from taking out an insurance to repairs
For almost all accidents
More coverage in case of damage than your standard warranty
No deductible

How do I insure my NAS?

First, add your NAS to your shopping cart. On the next page, choose the Protection Plan below. You always have a 30-day return window and pay no deductible in case of damage.

2-year Protection Plan
11,99
one-time
3-year Protection Plan
22,99
one-time

Specifications

Product

Product
	Product number	966925
	Manufacturer code	DS425+
	Brand	Synology
	Processing of your defect	Via Coolblue
	Old product returned for free

Memory properties

Memory properties
	Built-in hard drive
	Number of hard drive slots	4
	Suitable for hard drive size	2.5-inch SSD, 3.5-inch HDD
	RAID	Basic, JBOD, RAID 0, RAID 1, RAID 10, RAID 5, RAID 6, Synology Hybrid RAID
	Internal RAM	2 GB
	Total number of RAM slots	1

Connectors and connections

Connectors and connections
	Connection type	Wired
	LACP Link aggregation
	Thunderbolt connector
	Number of Ethernet ports	2
	Number of 10Gbps Ethernet ports	0
	Number of 2.5Gbps Ethernet ports	1
	Number of 1Gb/s Ethernet ports	1

Functions

Functions
	NAS functions	Backup server, Database server, Download server, FTP server, Mail server, Media server, Photo server, Surveillance station, VPN server, Web server, iTunes server
	NAS application center
	Plex support
	Type of Plex support	HD Ready (720p)
	DLNA
	UPnP AV support
	FTP server
	On/off switch
	Automatic switch on/off
	Kensington lock
	Apple Time Machine support
	Chromecast support
	Suitable for IFTTT
	Recommended for use	Making a backup, Media streaming, Personal cloud

Processor properties

Processor properties
	Processor brand	Intel
	Processor family	Celeron
	Processor code name	Gemini Lake Refresh
	Processor cores	Quad-Core (4)
	Clock speed	2 GHz

Physical properties

Physical properties
	Depth	25,6 cm
	Width	24 cm
	Height	28,6 cm
	Type NAS	Upright
	Color	Black
	Weight	2,18 kg

This is the one

Synology DS425+

Review is 9,2 out of 10, based on 3 reviews.

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Synology DS425+

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