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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.

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Intel Celeron J4125

✓ NAS enclosureDrives sold separately

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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 ↗

Specifications explain hardware limits. No performance tests are claimed.

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Maker specifications describe the recorded model and package. Missing measurements are labeled “Not recorded”.

Specification	Synology DS425+
Fastest wired port	2.5 Gbps
Drive bays	4 bays
RAM	2 GB
Processor	Intel Celeron J4125
Best for	Backups, Media server, Home office
Sources	Specifications checked November 2, 2026 View 5 sources Synology DS425+ specifications · synology.com Synology DS425+ specifications · synology.com Synology DS425+ specifications · intel.com Synology DS425+ specifications · synology.com Synology DS425+ specifications · synology.com
Retailer offer	Check price on Amazon

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