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Synology DS425+

Synology DiskStation DS425+ 4-bay NAS, black, official studio photo of the front panel with four drive trays, on a white background.

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DS425+, diskless four-bay NAS

Processor:
Intel Celeron J4125, 4 cores, 2.0 GHz base / 2.7 GHz turbo
Integrated graphics (Intel):
Intel UHD Graphics 600, with Quick Sync Video (per Intel)
Memory:
2 GB DDR4 non-ECC; 1 slot; up to 6 GB (2 GB + 4 GB)

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Package details

Model: DS425+

Four SATA drive bays plus two M.2 NVMe SSD slots. The diskless enclosure lets you choose the drives separately.

Condition:
Confirm new or reconditioned on the listing
Quantity:
Confirm package quantity on the listing

Important limit: Only 2 GB RAM, expandable to 6 GB

How many units?

Confirm condition, quantity and included accessories on the retailer’s listing.

Compare versions and packages

Specifications checked November 2, 2026. Full product details

A NAS. Then the drives.

Your files, your hardwareLook inside the box

What will your NAS do?

Choose the job first. Then check drives and the network.

NAS job

Choose a job to reveal the hardware trade-off.

Synology DS425+: 4 SATA bays, empty in the diskless enclosure.ENCLOSURE / SATA DRIVE PLANEmptyBayEmptyBayEmptyBayEmptyBay4 SATA bays · drives are purchased separately
SATA bay diagram · schematic, not physical scale2 separate M.2 slots; excluded from this SATA plan.

Empty bays do not store files. The enclosure and the drives are separate purchases. Check the maker’s drive and firmware compatibility list.

Selected enclosureKnow what is included

Synology DS425+

Intel Celeron J4125

✓ NAS enclosureDrives sold separately
SATA bays
4
Installed RAM
2 GB
Fastest Ethernet
2.5 Gbps

Choose the job

The enclosure is only the beginning.

Look at the drive bays, then check the software and network your job needs.

The trap to avoid

Bay count does not tell you whether any drives are included. Match the exact enclosure or bundle.

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Source specs & exact version

Synology DiskStation DS425+ 4-Bay NAS

DS425+, diskless four-bay NAS

Recorded model: DS425+

Specifications checked 2026-11-02.

Processor
Intel Celeron J4125, 4 cores, 2.0 GHz base / 2.7 GHz turbo
Integrated graphics (Intel)
Intel UHD Graphics 600, with Quick Sync Video (per Intel)
Memory
2 GB DDR4 non-ECC; 1 slot; up to 6 GB (2 GB + 4 GB)
Drive bays
4x 3.5-inch SATA HDD or 2.5-inch SATA SSD, plus 2x M.2 2280 NVMe SSD slots (SSD cache, or M.2 storage pools with Synology-verified SSDs)
Network
1x 2.5GbE, 1x 1GbE
Third-party drives (Synology, DSM 7.3)
Synology's 2025 Plus models running DSM 7.3 accept third-party drives for installation and storage pools; M.2 storage pools and cache still need drives on Synology's compatibility list
Volume capacity qualification
Maximum single volume: 108 TB. Actual pool and volume limits depend on drives, bay count and RAID; filesystem and metadata reduce usable capacity.

Raw capacity is before RAID and formatting. The example does not establish drive compatibility.

Capacity reference: WD Red Plus 8TB 3.5-Inch NAS Hard Drive (WD80EFPX). Capacity: 8 TB. Drive manufacturer specification ↗

Drive planning and software explained →

Photo credit: manufacturer image source ↗

Specifications explain hardware limits. No performance tests are claimed.

Size and placement

Size and placement

Size and weight
166 x 199 x 223 mm; 2.18 kg
Manufacturer specifications

Synology DiskStation DS425+ 4-Bay NAS

A four-bay Synology NAS with an Intel Celeron J4125, one 2.5GbE port and two M.2 NVMe slots.

Which version should you buy?

Selected package: DS425+, diskless four-bay NAS.

Selected package

  • DS425+ diskless four-bay NAS

    This page

    Model: DS425+

    What differs
    Four SATA drive bays plus two M.2 NVMe SSD slots. The diskless enclosure lets you choose the drives separately.
    Best for
    Buyers needing four-drive storage and optional NVMe cache or storage.
    Check price on Amazon

Bundles and accessories

  • DS225+ diskless two-bay NASModel: DS225+

    Contents and availability

    The smaller sibling has two SATA drive bays rather than four. It is a different enclosure, not a drive bundle for the DS425+.

    Buyers who need only a two-drive NAS.

    View DS225+ diskless two-bay NAS

Purchase links appear where the exact offer is verified. Confirm the named model, quantity and accessories before ordering.

Watch out

  • DS425+ has four SATA bays; DS225+ has two. Check the model number when a listing mixes specifications.
  • Diskless means drives are bought separately. M.2 slots are not extra bays for full-size hard drives.
  • a second listing does not establish a different hardware version.

Why people pick it

  • Four bays plus two M.2 NVMe slots
  • Intel CPU with integrated graphics (Quick Sync Video, per Intel)
  • 2.5GbE port

Know before you buy

  • Only 2 GB RAM, expandable to 6 GB
  • Second network port is 1GbE
  • M.2 pools and cache need Synology-listed drives

Full specifications

ProcessorIntel Celeron J4125, 4 cores, 2.0 GHz base / 2.7 GHz turbo
Integrated graphics (Intel)Intel UHD Graphics 600, with Quick Sync Video (per Intel)
Memory2 GB DDR4 non-ECC; 1 slot; up to 6 GB (2 GB + 4 GB)
Drive bays4x 3.5-inch SATA HDD or 2.5-inch SATA SSD, plus 2x M.2 2280 NVMe SSD slots (SSD cache, or M.2 storage pools with Synology-verified SSDs)
Network1x 2.5GbE, 1x 1GbE
USB2x USB 3.2 Gen 1
Noise (Synology)21.6 dB(A)
Power use (Synology)28.25 W in access, 6.10 W with drives hibernating; 90 W adapter
Size and weight166 x 199 x 223 mm; 2.18 kg
Third-party drives (Synology, DSM 7.3)Synology's 2025 Plus models running DSM 7.3 accept third-party drives for installation and storage pools; M.2 storage pools and cache still need drives on Synology's compatibility list
Warranty3-year limited hardware warranty
RAID supportSynology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6 and RAID 10.
Volume capacity qualificationMaximum single volume: 108 TB. Actual pool and volume limits depend on drives, bay count and RAID; filesystem and metadata reduce usable capacity.
Computer file backupSynology Drive Client can back up computer files to the NAS; Synology Drive Server must be installed on the NAS.
Synology Drive Client OS requirementsWindows 10 2004 or later, excluding Windows 10 on ARM and Windows Server editions; macOS 12 Monterey or later (64-bit); Ubuntu 20.04 or later (officially supported versions).

From manufacturer documentation, checked November 2, 2026. Spotted an error? Tell us.

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