SYNOLOGY DiskStation DS225+ 2-BAY Network Attached Storage

CPU Model

Intel Celeron J4125

CPU Quantity

1

CPU Core

4

CPU Architecture

64-bit

CPU Frequency

2.0 GHz (base), 2.7 GHz (turbo)

Hardware Encryption Engine

Yes

System Memory

2 GB DDR4 non-ECC

Total Memory Slots

1

Maximum Memory Capacity

6 GB (2 GB + 4 GB)

Memory Notes

Synology recommends using Synology memory for compatibility and warranty compliance.

Drive Bays

2

Drive Types Supported

3.5" SATA HDD, 2.5" SATA SSD

Hot Swappable Drive

Yes

Drive Compatibility Notes

Use compatible drives listed by Synology to ensure proper operation.

LAN Ports

1x RJ-45 1GbE, 1x RJ-45 2.5GbE

USB Ports

2x USB 3.2 Gen 1

USB Copy

Yes

LAN MTU Note

1GbE LAN MTU value limited to 1500

Dimensions (H x W x D)

165 mm x 108 mm x 232.2 mm

Weight

1.3 kg

System Fan

92 mm x 92 mm x 1

Fan Speed Modes

Full-Speed, Cool, Quiet

LED Brightness Adjustable

Yes

Power Recovery

Yes

Noise Level

19.6 dB(A)

Scheduled Power On/Off

Yes

Wake on LAN/WAN

Yes

Power Supply

60W AC Adapter

AC Input Voltage

100V to 240V AC

Power Frequency

50/60 Hz, Single Phase

Power Consumption

16.98W (Access), 6.08W (HDD Hibernation)

BTU (Thermal Output)

57.90 BTU/hr (Access), 20.73 BTU/hr (HDD Hibernation)

Power/Noise Testing Notes

Measured with Synology SATA HDDs; environment-controlled noise and temperature.

Operating Temperature

0°C to 40°C (32°F to 104°F)

Storage Temperature

-20°C to 60°C (-5°F to 140°F)

Operating Humidity

8% to 80% RH

Storage Humidity

5% to 95% RH

Certifications

FCC, CE, BSMI, VCCI, RCM, UKCA, EAC, CCC, KC, BIS

Warranty

3-year hardware warranty (extendable to 5 years with EW201 in select regions)

Warranty Notes

EW201/EW202 available in Asia, Africa, Oceania only; terms vary by region

Environmental Compliance

RoHS Compliant

Packaging Contents

Main Unit x1, Accessory Pack x1, AC Adapter x1, Power Cord x1, RJ-45 LAN Cable x2

Maximum Single Volume Size

108 TB

Maximum Internal Volume Number

32

SSD TRIM

Supported

Supported RAID Types

Synology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1

RAID Migration

Basic to RAID 1

Volume Expansion with Larger HDDs

Synology Hybrid RAID, RAID 1

Volume Size Notes

Each volume expandable up to 108 TB. Usable capacity is lower due to filesystem and metadata.

Internal File Systems

Btrfs, ext4

External File Systems

Btrfs, ext4, ext3, FAT32, NTFS, HFS+, exFAT

Supported File Protocols

SMB, AFP, NFS, FTP, WebDAV, Rsync

Max SMB Connections (FSCT-Based)

5

Windows ACL Integration

Yes

NFS Kerberos Authentication

Yes

User Accounts (Local)

Up to 512

Local Groups

Up to 128

Shared Folders

Up to 128

Shared Folder Sync Tasks

Up to 4

Hybrid Share Folders

Up to 10

Hyper Backup

Data & Folder Backup, Entire System Backup

Synology High Availability

Supported

Syslog Events per Second (Log Center)

800

Supported Protocols

SMB1/2/3, NFSv3/v4/v4.1, iSCSI, HTTP/HTTPS, FTP, SNMP, LDAP, CalDAV

Supported Browsers

Chrome, Firefox, Edge, Safari

Supported Languages

Multilingual (incl. English, 中文, 日本語, 한국어, Español, Français, etc.)

Central Management System

Supported

Synology AI Console

Supported

Third-Party AI Model Integration

Supported

Synology Chat Max Users

100

Download Station Max Tasks