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White rectangular desktop NAS with four drive bays and front status LEDs

Synology Inc.

Synology Inc. DS425+ 4-bay NAS 2GB DDR4

SKU CH-2DK5-PKN5M MPN DS425+

A four-bay desktop NAS with an Intel Celeron J4125 processor, 2 GB DDR4 memory expandable to 6 GB, one 2.5GbE and one 1GbE port, two USB 3.2 Gen 1 ports, and M.2 NVMe slots for SSD cache

  • TypeDesktop NAS
  • Ports2 x USB 3.2 Gen 1 ports
  • HDD Interface4 x SATA (4 x Bay)
  • Form Factor4-bay;2GB DDR4 non-ECC
  • ProcessorIntel Celeron J4125
  • Installed Memory4-bay;2GB DDR4

Model DS425+

  • Four drive bays for flexible storage capacity
  • Dual LAN with 2.5GbE and 1GbE ports
  • M.2 NVMe slots enable SSD caching
  • Memory expandable to 6 GB via DDR4 SODIMM
  • Diskless design lets you choose your own drives

Four-bay desktop NAS with dual LAN

The Synology DS425+ is a diskless four-bay desktop NAS powered by an Intel Celeron J4125 processor and 2 GB of DDR4 memory. It provides two USB 3.2 Gen 1 ports, one 2.5 GbE and one 1 GbE RJ-45 port, plus built-in M.2 NVMe slots for SSD cache. The unit supports SMB, NFS, iSCSI and other common file protocols for backup and media streaming.

Suits home users and small offices needing

This NAS fits users who want a compact, quiet appliance for personal cloud backup, media streaming and file sharing across Windows, macOS and Linux clients. The 2 GB of soldered memory plus one SODIMM slot allows expansion to 6 GB for heavier workloads. Buyers who require 10 GbE connectivity out of the box or more than four drive bays should consider other models.

Bundled cables and power gear enable immediate setup

The package includes the main unit, an accessory pack, an AC power adapter, an AC power cord and two RJ-45 LAN cables. These items let you connect both network ports and power the device without extra purchases. No drives are included, so you must supply your own SATA hard drives or SSDs to begin storing data.

Privalumai

  • Four drive bays for flexible storage capacity
  • Dual LAN with 2.5GbE and 1GbE ports
  • M.2 NVMe slots enable SSD caching
  • Memory expandable to 6 GB via DDR4 SODIMM
  • Diskless design lets you choose your own drives

Specifikacijos

BrandSynology
SeriesDiskStation
ModelDS425+
TypeDesktop NAS
Ports2 x USB 3.2 Gen 1 ports
HDD Interface4 x SATA (4 x Bay)
Form Factor4-bay;2GB DDR4 non-ECC
ProcessorIntel Celeron J4125
Installed Memory4-bay;2GB DDR4
Max Memory Capacity6 GB (2 GB + 4 GB)
Memory Slot2 x DDR4 SODIMM
Included HDD CapacityDiskless System
Supported ProtocolsSMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS
Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP,
CalDAV
Power100V to 240V AC
TemperatureOperating Temperature : 0°C to 40°C (32°F to 104°F)
Storage Temperature : -20°C to 60°C (-5°F to 140°F)
Humidity5% to 95% RH
Features5% to 95% RH
UsageBackup & stream media through personal cloud
Dimensions11.26" x 9.45" x 10.08"
Weight7.72lbs
Package ContentsMain Unit X 1
Accessory Pack X 1
AC Power Adapter X 1
AC Power Cord X 1
RJ-45 LAN Cable X 2
Siuntos svoris3.63 kg
Pakuotės dydis284 × 259 × 241 mm

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Which SATA hard drives or SSDs do I need to install before the DS425+ can store any data?

The unit ships diskless, so you must supply up to four 3.5" or 2.5" SATA drives that will occupy the four drive bays.

Will my existing 1 GbE switch limit the 2.5 GbE port on the DS425+?

The 2.5 GbE port will negotiate down to 1 GbE when connected to a 1 GbE switch, while the second RJ-45 port already runs at 1 GbE.

How can I confirm the M.2 NVMe SSD cache is active after I install it?

Open DSM Storage Manager, select the SSD Cache section, and verify the installed M.2 NVMe modules show a "Normal" status with read/write cache enabled.

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