Synology DiskStation DS925+ 4 Drive Bays NAS Server
4-bay with expansion Up to 180 TB of raw storage with expansion unit
High-speed storage Two built-in 2.5GbE ports and over 522/565 MB/s sequential read/write
Versatile applications Back up multiple endpoints, manage 40 IP cameras4 , or safely sync and share files across sites
| Hardware | |
|---|---|
| CPU | AMD Ryzen V1500B, Quad-core 2.2GHz, 64-bit |
| Encryption Engine | Yes |
| System Memory | 4GB DDR4 ECC SODIMM (1x 4GB), Expandable to 32GB (16GB x 2) |
| Memory Slots | 2 |
| Drive Bays | 4 (expandable to 9 with 1x DX525) |
| M.2 Slots | 2 x NVMe 2280 (not hot swappable) |
| Drive Types | 3.5" SATA HDD, 2.5" SATA SSD, M.2 2280 NVMe SSD |
| LAN Ports | 2 x RJ-45 2.5GbE |
| USB Ports | 2 x USB 3.2 Gen 1 |
| Expansion Port | 1 x USB Type-C |
| Dimensions | 166 x 199 x 223 mm |
| Weight | 2.26 kg |
| System Fans | 2 x 92mm |
| Fan Modes | Full-Speed, Cool, Quiet |
| LED Indicators | Brightness adjustable |
| Noise Level | 20.5 dB(A) |
| Power Recovery | Yes |
| Wake on LAN/WAN | Yes |
| Power Supply | 100W (adapter included), Max 120W |
| Power Usage | 37.91W (Access), 12.33W (HDD Hibernation) |
| BTU | 129.27 BTU/hr (Access), 42.05 BTU/hr (HDD Hibernation) |
| 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% – 80% RH |
| Certifications | FCC, CE, BSMI, VCCI, RCM, UKCA, EAC, CCC, KC, BIS |
| Warranty | 3 years (extendable to 5 with EW201 or Extended Warranty Plus) |
| Environment | RoHS Compliant |
| Included Accessories | Main Unit, Accessory Pack, AC Adapter & Cord, 2 x RJ-45 LAN Cables |
| Optional Accessories | Synology DDR4 ECC RAM, DX525 Expansion, HAT5300/HAT3300/SAT5200/SNV SSDs |
| DSM (DiskStation Manager) | |
| Max Volume Size | 108TB (200TB requires 32GB RAM) |
| Max Internal Volumes | 32 |
| M.2 SSD Storage Pool | Supported (only Synology SSDs) |
| Supported RAID Types | SHR, Basic, JBOD, RAID 0/1/5/6/10 |
| RAID Migration | Basic→RAID1/5, RAID1→RAID5, RAID5→RAID6 |
| Volume Expansion | Supported via SHR, RAID1/5/6/10 and HDDs |
| Hot Spare Support | SHR, RAID1/5/6/10 (with expansion) |
| Internal File Systems | Btrfs, ext4 |
| External File Systems | Btrfs, ext4, ext3, FAT32, NTFS, HFS+, exFAT |
| File Protocols | SMB, AFP, NFS, FTP, WebDAV, Rsync |
| Max SMB Connections | 40 |
| Access Control Support | Windows ACL, NFS Kerberos |
| User Accounts / Groups | 512 users, 128 groups |
| Shared Folders | 128 |
| Shared Folder Sync | 8 tasks |
| Hybrid Share | Up to 10 folders |
| Backup Options | Hyper Backup (Folder, Package, System), Snapshot Replication |
| Snapshots | 128 per folder, 256 total |
| Surveillance | 2 free licenses; Up to 40 cameras, 1200FPS H.265, 1050FPS H.264 |
| Photos App | Facial and Object Recognition |
| Chat Users | Max 150 |
| Drive Users | Max 80, 500K hosted files |
| Office Users | Max 80 |
| Download Tasks | 80 concurrent |
| iSCSI Targets / LUNs | 2 Targets, 2 LUNs |
| MailPlus Users | 5 free, up to 90 (licensed) |
| Virtual Machines | Up to 8 VMs or Virtual DSMs |
| VPN Connections | 8 |
| Virtualization Support | VMware ESXi, Windows Server 2022, Citrix, OpenStack |
| Supported Browsers | Chrome, Firefox, Edge, Safari |
| Supported Languages | 20+ including English, German, Japanese, Chinese, Korean, etc. |
| Free Delivery | ✓ |
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