Synology · NAS / storage
Synology DS425+
4-bay 2.5GbE NAS with dual M.2 slots
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1 official PDFManufacturer images
GET TO KNOW THIS PRODUCT
Product overview
Synology DS425+ is a 4-bay DiskStation NAS with 1 × 2.5GbE + 1 × 1GbE networking for shared files, synchronization and backup. DSM provides storage-pool, user-permission and application management.
At a glance
- ProcessorIntel Celeron J4125；4 cores；2.0–2.7 GHz
- Memory2 GB DDR4 non-ECC, expandable to 6 GB
- SATA drive bays4 bays for 3.5-inch HDDs / 2.5-inch SSDs
Raw drive capacity is not the usable capacity after RAID. Allow for redundancy, snapshots and growth. Check this model’s compatibility list for HDDs, M.2 SSDs, expansion units and NICs; some application features require licences.
Typical applications
Central office storage, team collaboration, backup and video surveillance
Plan your configuration
Share your existing storage, required capacity and backup objectives to check drive compatibility and expansion options.
Technical specifications
Specifications from manufacturer information; confirm regional options against the quoted SKU.
- Processor
- Intel Celeron J4125；4 cores；2.0–2.7 GHz
- Memory
- 2 GB DDR4 non-ECC, expandable to 6 GB
- SATA drive bays
- 4 bays for 3.5-inch HDDs / 2.5-inch SSDs
- M.2 expansion
- 2 M.2 2280 NVMe SSD slots for cache / storage pools; verify drive compatibility
- Network interfaces
- 1 × 2.5GbE + 1 × 1GbE RJ-45
- RAID options
- SHR, Basic, JBOD, RAID 0 / 1 / 5 / 6 / 10
- Management system
- Synology DiskStation Manager (DSM)
- File systems
- Btrfs / ext4
- USB expansion
- 2 × USB 3.2 Gen 1
- Data protection
- Snapshot features supported; verify package, file system and retention settings
- File access
- SMB / NFS, according to DSM service settings
Additional information checked:
MANUFACTURER DOCUMENTS
Official PDFs & product information
Documents open on the manufacturer’s site in a new tab, in their original language. Family documents may include options not supplied in every configuration.
Sources & review dates
Specification source reviewed: 2026-10-22 · Product page published: 2026-10-23
Additional PDF links checked: 2026-10-26
Additional official PDF · global.synologydownload.comPLAN YOUR PURCHASE
Confirm the configuration before ordering
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