Synology DiskStation DS925+ 4 Drive Bays NAS Server

General Specifications

Brand: Viperatech

Model: DS925+

SKU: 308990

Date First Available: 12 August 2026

CPU: AMD Ryzen V1500B, Quad-core 2.2GHz, 64-bit

Encryption Engine: Yes

System Memory: 32GB DDR4 ECC SODIMM

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 Temp: 0°C to 40°C (32°F to 104°F)

Storage Temp: -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

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.

Shipping Weight: 3.70 kg

Shipping Dimensions: 24.50 x 29.00 x 26.00 cm