Expandable 5-bay business NAS
Synology DiskStation DS1525+ 5-Bay Diskless NAS
The Synology DiskStation DS1525+ is a five-bay NAS with an AMD Ryzen V1500B processor, 8 GB ECC memory, dual 2.5GbE, two M.2 NVMe slots, DX525 expansion and an optional 10GbE upgrade path.
- Processor
- AMD Ryzen V1500B
- Memory
- 8 GB DDR4 ECC
- Storage
- 5 bays + 2 M.2 slots
- Networking
- Dual 2.5GbE; optional 10GbE
Adaptable storage for growing teams
The Synology DiskStation DS1525+ balances a five-bay desktop footprint with room to expand. It supports two DX525 units for up to fifteen bays, includes dual 2.5GbE networking and provides a dedicated network-upgrade slot for a compatible 10GbE module.
Fifteen-bay scale
Add two DX525 expansion units to grow from five to fifteen drive bays.
ECC memory
The included 8 GB ECC SODIMM supports a stated maximum of 32 GB.
Dual 2.5GbE
Two built-in 2.5GbE ports provide multi-gigabit connectivity out of the box.
Optional 10GbE
The network-upgrade slot supports the compatible E10G22-T1-Mini module.
M.2 NVMe options
Two M.2 slots support compatible SSD cache or storage-pool configurations.
DSM data services
Use Synology applications for file sharing, backup, synchronisation and supported surveillance.
Who is the Synology DiskStation DS1525+ best for?
A strong choice for
- Small and medium businesses with growing storage
- Teams wanting dual 2.5GbE now and 10GbE later
- Backup and file-service consolidation
- Private cloud collaboration
- Multi-site synchronisation
- Surveillance storage with expansion needs
Consider another model if you need
- You need PCIe cards beyond the dedicated network module
- You require more than fifteen total bays
- You need 25GbE connectivity
- You prefer rackmount form factor or redundant power
Key specifications
- CPU
- AMD Ryzen V1500B, 4-core
- Memory
- 8 GB DDR4 ECC SODIMM
- Maximum memory
- 32 GB
- Drive bays
- 5; up to 15 with DX525 × 2
- M.2 slots
- 2 × M.2 2280 NVMe
- Networking
- 2 × 2.5GbE; optional 10GbE
- Network slot
- 1 × Gen3 x2 upgrade slot
- Dimensions
- 166 × 230 × 223 mm
- Weight
- 2.67 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 | 5 × 3.5-inch SATA HDD or 2.5-inch SATA SSD |
| Maximum drive bays with expansion | 15 (DX525 × 2) |
| Maximum raw capacity guidance | Up to 360 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 | 2 |
| Expansion port | 2 × USB Type-C expansion ports |
| PCIe expansion | 1 × Gen3 x2 network upgrade slot |
| Optional network upgrade | 1 × 10GbE RJ-45 with E10G22-T1-Mini, sold separately |
Physical, power and environment
| Dimensions (H × W × D) | 166 × 230 × 223 mm |
|---|---|
| Weight | 2.67 kg |
| System fan | 92 × 92 mm × 2 |
| Fan modes | Full-Speed, Cool and Quiet |
| Adjustable front LED brightness | Supported |
| Power recovery | Supported |
| Scheduled power on/off | Supported |
| Wake on LAN/WAN | Supported |
| Noise level | 22.60 dB(A) |
| Power supply / adapter | 120 W |
| AC input | 100V to 240V AC |
| Power frequency | 50/60 Hz, single phase |
| Power consumption — access | 44.56 W |
| Power consumption — HDD hibernation | 13.63 W |
| British thermal unit — access | 151.95 BTU/hr |
| British thermal unit — HDD hibernation | 46.48 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 adapter × 1, AC power cord × 1 and RJ-45 LAN cable × 2 |
Frequently asked questions about the Synology DiskStation DS1525+
What is the Synology DiskStation DS1525+?
It is an expandable five-bay diskless NAS for business storage, backup, sharing and supported surveillance.
Which processor does the DS1525+ use?
The DS1525+ uses a four-core, eight-thread AMD Ryzen V1500B running at 2.2 GHz.
How much memory is installed in the DS1525+?
It includes 8 GB DDR4 ECC SODIMM memory and supports up to 32 GB.
How many drive bays can the DS1525+ support?
It has five internal SATA bays and can expand to fifteen total bays with two DX525 units.
Does the DS1525+ 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 DS1525+?
It includes two 2.5GbE RJ-45 ports.
Can the DS1525+ be upgraded to 10GbE?
Yes. One 10GbE RJ-45 port can be added using a compatible E10G22-T1-Mini module, sold separately.
What transfer performance is stated for the DS1525+?
Synology states up to 1,181 MB/s sequential read and 1,180 MB/s sequential write in a suitable test configuration.
Are drives included with the DS1525+?
No. It is diskless, and compatible SATA and M.2 drives are sold separately.
What warranty applies to the DS1525+?
It includes a three-year hardware warranty, extendable to five years through eligible Synology options.
- This listing is diskless; drives, expansion units and the 10GbE module are sold separately.
- The 360 TB figure uses fifteen 24 TB drives; usable capacity depends on RAID and 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.
