Synology · Plus series
Synology DS1825+
The Synology DS1825+ is a 8-bay desktop NAS built around the AMD Ryzen V1500B processor. Installed memory is 8 GB DDR4 ECC SODIMM, expandable to 32 GB. Networking is 2 x 2.5GbE RJ-45. It also has 2 x M.2 2280 NVMe SSD for SSD cache or fast storage. With expansion units it grows to 18 drive bays.
- Drive bays
- 8
- Processor
- AMD Ryzen V1500B
- Memory
- 8 GB DDR4 ECC SODIMM
- Network
- 2.5GbE
Who it suits
Eight bays allow RAID 6 with plenty of usable space, or separate fast and bulk storage pools. A common choice for 25 to 100 users.
Synology DS1825+ specifications
| Processor | AMD Ryzen V1500B, 4-core, 2.2 GHz |
|---|---|
| Memory installed | 8 GB DDR4 ECC SODIMM |
| Maximum memory | 32 GB (16 GB x 2) |
| Drive bays | 8 x 3.5" SATA HDD or 2.5" SATA SSD |
| M.2 slots | 2 x M.2 2280 NVMe SSD |
| Maximum bays with expansion | 18 |
| Network ports | 2 x 2.5GbE RJ-45 |
| USB ports | 3 x USB 3.2 Gen 1 |
| Expansion slots | 1 x Gen3 x8 slot (x4 link) |
| HDMI | none |
| Form factor | Desktop |
| Size (H × W × D) | 166 x 343 x 243 mm |
| Weight | 6 kg |
| Power consumption | 60.1 W access / 18.34 W HDD hibernation |
| Noise level | 23.8 dB(A) |
| Power supply | 250 W |
| Warranty | 3 years, extendable to 5 years |
Specifications from Synology's published data, checked October 2026. See the DS1825+ on Synology's website. Confirm details before ordering.
Usable capacity by RAID level
How much space the DS1825+ gives with typical drive sizes.
| RAID level | 8 × 4 TB | 8 × 8 TB | 8 × 12 TB | 8 × 16 TB | 8 × 20 TB |
|---|---|---|---|---|---|
| RAID 5 | 28 TB | 56 TB | 84 TB | 112 TB | 140 TB |
| RAID 6 | 24 TB | 48 TB | 72 TB | 96 TB | 120 TB |
| RAID 10 | 16 TB | 32 TB | 48 TB | 64 TB | 80 TB |
Space is shown before formatting; expect about 10% less in use. Larger systems are often split into more than one RAID group.
What we do with it
- Storage
NAS supply and installation
A right-sized Synology, QNAP or Asustor unit with the drives, RAID level and network setup your office needs.
- Backup
Automatic backup setup
Scheduled backups of PCs, servers and shared folders to the NAS, with an off-site copy, so nobody has to remember to do it.
- Versions
Ransomware protection for NAS
Point-in-time snapshots and protected copies that let you roll a folder back to how it was before an attack or a mistake.
- Move
Data migration
We move your files, users and permissions from old servers, external drives or an ageing NAS.
Questions about the DS1825+
How much usable storage does the DS1825+ give?
It depends on the drives and the RAID level. With 8 × 8 TB drives in RAID 5 you get about 56 TB before formatting. The capacity table on this page shows other combinations.
Can the DS1825+ be expanded?
Yes. With Synology expansion units it supports up to 18 drive bays in total.
Can the memory in the DS1825+ be upgraded?
Yes. It ships with 8 GB DDR4 ECC SODIMM and Synology lists a maximum of 32 GB.
Does the DS1825+ have 10GbE?
Not built in. Its ports are 2 x 2.5GbE RJ-45. It has an expansion slot, which can take a faster network card where Synology lists one for this model.
What warranty does the DS1825+ have?
Synology lists a hardware warranty of 3 years, extendable to 5 years for this model.
Do you supply the DS1825+ with drives and installation?
Yes. We supply it with compatible drives fitted, configured and tested, and can install it at your office. Ask for a quote on this page.
Similar Synology models
- 8-bay
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8-bay alternatives from other brands
- 8-bay
QNAP TS-873A
AMD Ryzen Embedded V1500B, 8 GB DDR4 SODIMM, 2 x 2.5GbE
- 8-bay
Asustor AS6508T
Intel Atom C3538, 8 GB, 2 x 10GbE, 2 x 2.5GbE
- 8-bay
QNAP TVS-h874
Intel Core i5, i7 or i9 (12th gen), 32 GB DDR4 SODIMM, 2 x 2.5GbE (TVS-h874X adds 2 x 10GBASE-T)
- 8-bay
Asustor AS6808T
AMD Ryzen V3C14, 16 GB DDR5 ECC SO-DIMM, 2 x 5GbE, 2 x 10GbE