| Specification | Details |
|---|---|
| Hardware Specifications | |
| CPU | |
| CPU Model | Intel Celeron J4125 |
| CPU Quantity | 1 |
| CPU Cores | 4 |
| CPU Threads | 4 |
| CPU Architecture | 64-bit |
| CPU Frequency | 2.0GHz base / 2.7GHz turbo |
| Hardware Encryption Engine | Supported |
| Memory | |
| System Memory | 2GB DDR4 non-ECC |
| Total Memory Slots | 1 |
| Maximum Memory Capacity | 6GB, 2GB + 4GB |
| Memory Note | Synology may revise pre-installed memory module specifications due to component lifecycle and supply conditions. Revised components are validated for compatibility, stability and performance. |
| Memory Expansion Note | Synology recommends using Synology memory modules for optimum compatibility and reliability. |
| Storage | |
| Drive Bays | 2 × 3.5" SATA HDD or 2.5" SATA SSD |
| Hot Swappable Drive | Supported |
| Storage Note | Synology only guarantees full functionality, reliability and performance for compatible drives. Please check the Synology compatibility list before purchasing drives. |
| SSD Cache Note | SSD cache can be enabled with selected compatible SSDs. SSDs are sold separately. |
| External Ports | |
| RJ-45 1GbE LAN Port | 1 |
| RJ-45 2.5GbE LAN Port | 1 |
| USB 3.2 Gen 1 Port | 2 |
| USB Copy | Supported |
| Network Note | 1GbE LAN ports have a maximum transmission unit, MTU, size of 1,500 bytes. |
| Appearance | |
| Dimensions | 165 × 108 × 232.2 mm |
| Weight | 1.3kg |
| Others | |
| System Fan | 92 × 92 mm, 1 piece |
| Fan Speed Mode | Full-Speed Mode, Cool Mode, Quiet Mode |
| Brightness Adjustable Front LED Indicators | Supported |
| Power Recovery | Supported |
| Noise Level | 19.6 dB(A) |
| Scheduled Power On / Off | Supported |
| Wake on LAN / WAN | Supported |
| Power Supply Unit / Adapter | 60W |
| AC Input Power Voltage | 100V to 240V AC |
| Power Frequency | 50/60Hz, Single Phase |
| Power Consumption | 16.98W access; 6.08W HDD hibernation |
| British Thermal Unit | 57.90 BTU/hr access; 20.73 BTU/hr HDD hibernation |
| Noise Testing Note | Tested fully installed with Synology SATA HDDs in idle state, with microphones placed 1m from the front and rear of the device. |
| Temperature | |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -20°C to 60°C |
| Operating Humidity | 8% to 80% RH |
| Storage Humidity | 5% to 95% RH |
| Certification | |
| Certifications | FCC, CE, BSMI, VCCI, RCM, UKCA, EAC, CCC, KC, BIS |
| Warranty | |
| Warranty | 3-Year Hardware Warranty, extendable to 5 years with EW201 or Extended Warranty Plus |
| Warranty Note | Warranty period starts from the purchase date stated on the receipt. |
| Extended Warranty Note | Extended Warranty Plus is available in Europe and North America. EW201/EW202 is available in Asia, Africa and Oceania. |
| Environment | |
| Environmental Compliance | RoHS Compliant |
| Packaging Content | |
| Box Contents | Main Unit × 1, Accessory Pack × 1, AC Power Adapter × 1, AC Power Cord × 1, RJ-45 LAN Cable × 2 |
| Optional Accessories | |
| Optional Accessories | DDR4 non-ECC SODIMM: D4NS01-4G; Enterprise Series 3.5" SATA HDD: HAT5300 Series; Plus Series 3.5" SATA HDD: HAT3300 Series; Enterprise Series 2.5" SATA SSD: SAT5200 Series |
| DSM Specifications | |
| Storage Management | |
| Maximum Single Volume Size | 108TB |
| Maximum Internal Volume Number | 32 |
| SSD TRIM | Supported |
| Storage Efficiency | Supported |
| Supported RAID Type | 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 |
| Storage Management Note | Each internal volume may be expanded up to 108TB. Actual maximum storage pool and volume sizes depend on drive sizes, number of drive bays and RAID configuration. |
| Usable Capacity Note | Usable capacity will be lower depending on filesystem and system metadata. |
| Storage Efficiency Note | Storage efficiency helps reduce storage space consumption through deduplication and compression. |
| File System | |
| Internal Drives | Btrfs, ext4 |
| External Drives | Btrfs, ext4, ext3, FAT32, NTFS, HFS+, exFAT |
| File Services | |
| File Protocol | SMB, AFP, NFS, FTP, WebDAV, Rsync |
| Maximum SMB Connections | 5 |
| Windows ACL Integration | Supported |
| NFS Kerberos Authentication | Supported |
| File Services Note | Connection value tested with Synology SATA HDD fully populated and all onboard network ports. |
| Performance Testing Note | SMB performance was evaluated using Microsoft File Server Capacity Tool, FSCT, version 1.3. |
| Account & Shared Folder | |
| Maximum Local User Accounts | 512 |
| Maximum Local Groups | 128 |
| Maximum Shared Folders | 128 |
| Maximum Shared Folder Sync Tasks | 4 |
| Hybrid Share | |
| Maximum Hybrid Share Folders | 10 |
| Hyper Backup | |
| Folder and Package Backup | Supported |
| Entire System Backup | Supported |
| High Availability | |
| Synology High Availability | Supported |
| Log Center | |
| Syslog Events per Second | 800 |
| General Specifications | |
| Supported Protocols | SMB1, SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPS, FTP, SNMP, LDAP, CalDAV |
| Supported Browsers | Chrome, Firefox, Edge, Safari |
| Supported Languages | English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文 |
| General Note | For the latest supported browser versions, refer to DSM Technical Specifications. |
Product Features
Synology DiskStation DS225+ is a compact 2-bay NAS designed for home, small office, and edge storage use. It helps users store, share, sync, back up, and protect important files in a private cloud environment.
- Compact 2-bay NAS for home and small office storage
- Supports up to 48TB raw storage capacity
- Built-in 2.5GbE LAN port for faster network performance
- Sequential performance of up to 282MB/s read and 217MB/s write
- Store, access, sync, and share files from different devices
- Supports Synology Drive for private cloud file management and collaboration
- Allows file versioning to help recover from accidental deletion, mistakes, or malware
- Supports Synology Photos for photo and video backup, organization, and sharing
- Supports multi-site file synchronization between Synology NAS devices
- Can sync with public cloud services such as Google Drive, Dropbox, Microsoft OneDrive, and Backblaze B2
- Supports backup for PCs, file servers, virtual machines, SaaS applications, and mobile devices
- Supports immutable snapshots to help protect shared folders and LUNs against tampering
- Supports Synology Surveillance Station for centralized video surveillance
- Supports up to 25 IP cameras with 2 free camera licenses included
- Centralized monitoring and management through Synology DSM tools
- Backed by 3-year limited hardware warranty
