Scalable 8-bay business NAS
Synology DiskStation DS1825+ 8-Bay Diskless NAS
The Synology DiskStation DS1825+ is an eight-bay NAS with an AMD Ryzen V1500B processor, 8 GB ECC memory, dual 2.5GbE, two M.2 NVMe slots and PCIe networking options up to 25GbE.
- Processor
- AMD Ryzen V1500B
- Memory
- 8 GB DDR4 ECC
- Storage
- 8 bays + 2 M.2 slots
- Networking
- Dual 2.5GbE; optional 10/25GbE
Scalable storage with flexible network expansion
The Synology DiskStation DS1825+ is built for organisations that need more internal bays, expansion capacity and network choices in a desktop NAS. It combines eight SATA bays, support for two DX525 expansion units, M.2 NVMe options and a PCIe slot for compatible 10GbE or 25GbE adapters.
Eighteen-bay scale
Add two DX525 units to expand from eight to eighteen drive bays.
ECC memory
The installed 8 GB ECC SODIMM supports a stated maximum of 32 GB.
High-speed networking path
Dual 2.5GbE is built in, with compatible PCIe options up to 25GbE.
M.2 NVMe flexibility
Two M.2 slots support compatible SSD caching or storage-pool deployments.
Business data services
DSM supports file sharing, backup, synchronisation and management across teams and sites.
Surveillance option
The current positioning supports management of up to 40 IP cameras, subject to licences and configuration.
Who is the Synology DiskStation DS1825+ best for?
A strong choice for
- Growing businesses with large storage sets
- Teams planning 10GbE or 25GbE networking
- Backup repositories
- Multi-site file synchronisation
- Virtualisation-adjacent storage workflows supported by DSM
- Surveillance deployments needing capacity growth
Consider another model if you need
- You need rackmount form factor or redundant power
- You require more than 18 total bays
- You do not need PCIe or expansion capability
- You need memory beyond the 32 GB stated maximum
Key specifications
- CPU
- AMD Ryzen V1500B, 4-core
- Memory
- 8 GB DDR4 ECC SODIMM
- Maximum memory
- 32 GB
- Drive bays
- 8; up to 18 with DX525 × 2
- M.2 slots
- 2 × M.2 2280 NVMe
- Networking
- 2 × 2.5GbE; optional 10/25GbE
- PCIe
- Gen3 x8 slot, x4 link
- Dimensions
- 166 × 343 × 243 mm
- Weight
- 6 kg
- Warranty
- 3 years, extendable to 5 years
Full technical specifications
Processor, memory and storage
| CPU model | AMD Ryzen V1500B |
|---|---|
| CPU quantity | 1 |
| CPU cores | 4 |
| CPU threads | 8 |
| CPU architecture | 64-bit |
| CPU frequency | 2.2 GHz |
| Hardware encryption engine | Supported |
| System memory | 8 GB DDR4 ECC SODIMM |
| Pre-installed memory | 8 GB (8 GB × 1) |
| Memory slots | 2 |
| Maximum memory capacity | 32 GB (16 GB × 2) |
| Drive bays | 8 × 3.5-inch SATA HDD or 2.5-inch SATA SSD |
| Maximum drive bays with expansion | 18 (DX525 × 2) |
| Maximum raw capacity guidance | Up to 432 TB raw with expansion using 24 TB drives |
| M.2 drive slots | 2 × M.2 2280 NVMe |
| Supported drive types | 3.5-inch SATA HDD, 2.5-inch SATA SSD and M.2 2280 NVMe SSD |
| Hot-swappable SATA drives | Supported |
| M.2 hot swap | Not supported |
Network, ports and expansion
| 2.5GbE RJ-45 ports | 2 |
|---|---|
| USB 3.2 Gen 1 ports | 3 |
| Expansion port | 2 × USB Type-C expansion ports |
| PCIe expansion | 1 × Gen3 x8 slot (x4 link) |
| Optional network upgrade | Compatible 10GbE or 25GbE PCIe network interface card |
Physical, power and environment
| Dimensions (H × W × D) | 166 × 343 × 243 mm |
|---|---|
| Weight | 6 kg |
| System fan | 120 × 120 mm × 2 |
| Fan modes | Full-Speed, Cool and Quiet |
| Easy-replacement system fan | Supported |
| Adjustable front LED brightness | Supported |
| Power recovery | Supported |
| Scheduled power on/off | Supported |
| Wake on LAN/WAN | Supported |
| Noise level | 23.8 dB(A) |
| Power supply / adapter | 250 W |
| AC input | 100V to 240V AC |
| Power frequency | 50/60 Hz, single phase |
| Power consumption — access | 60.1 W |
| Power consumption — HDD hibernation | 18.34 W |
| British thermal unit — access | 204.94 BTU/hr |
| British thermal unit — HDD hibernation | 62.54 BTU/hr |
| 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 |
Warranty, compliance and package contents
| Warranty | 3-year hardware warranty, extendable to 5 years with EW201 or Extended Warranty Plus |
|---|---|
| Environmental compliance | RoHS compliant |
| Certifications | FCC, CE, BSMI, VCCI, RCM, UKCA, EAC, CCC, KC and BIS |
| Package contents | Main unit × 1, accessory pack × 1, AC power cord × 1 and RJ-45 LAN cable × 2 |
Frequently asked questions about the Synology DiskStation DS1825+
What is the Synology DiskStation DS1825+?
It is an expandable eight-bay diskless NAS for business storage, backup, sharing and supported surveillance.
Which processor does the DS1825+ use?
The DS1825+ uses a four-core, eight-thread AMD Ryzen V1500B running at 2.2 GHz.
How much memory is installed in the DS1825+?
It includes 8 GB DDR4 ECC SODIMM memory and supports up to 32 GB.
How many drive bays can the DS1825+ support?
It has eight internal SATA bays and can expand to eighteen total bays with two DX525 units.
Does the DS1825+ include M.2 slots?
Yes. It has two M.2 2280 NVMe slots for compatible SSD cache or storage-pool use.
Which network ports are built into the DS1825+?
It includes two 2.5GbE RJ-45 ports.
Can the DS1825+ be upgraded to faster networking?
Yes. Its PCIe slot supports compatible network adapters, with Synology listing 10GbE and 25GbE options.
What transfer performance is stated for the DS1825+?
Synology states over 2,239 MB/s sequential read and 1,573 MB/s sequential write in its test configuration.
Are drives included with the DS1825+?
No. It is diskless, and compatible SATA and M.2 drives are sold separately.
What warranty applies to the DS1825+?
It includes a three-year hardware warranty, extendable to five years through eligible Synology options.
- This listing is diskless; drives, expansion units and network cards are sold separately.
- The 432 TB figure uses eighteen 24 TB drives; usable capacity depends on RAID and system configuration.
- M.2 hot swap is not supported, and exact SSD/network compatibility must be checked.
- Performance and camera figures are based on Synology test or planning conditions.
