Synology DS1825+ DiskStation DS1825+ 8-Bay NAS Diskless DS1825+

This item is brand-new, factory sealed.

DiskStation DS1825+

High-capacity & versatile storage solution in a desktop form factor

Designed for scalability and performance

8-bay with expansion

Up to 360 TB of raw storage with expansion unit^note2,3

High-speed storage

Two built-in 2.5GbE ports,over 2,239/1,573 MB/s sequential read/write^note4, and 10/25 GbE option^note5

Versatile applications

Back up multiple endpoints, manage 40 IP cameras^note6, or safely sync and share files across sites

Fast, out-of-the-box performance with 25GbE support

The DS1825+ features built-in 2.5GbE networking and supports both SATA SSDs and HDDs in 2.5"/3.5" internal bays, as well as M.2 NVMe drives via M.2 slots for use as cache. ^note2,7 Its support for expansion cards allows configuration flexibility, supporting faster networking of up to 25GbE. ^note5

Notes:

2. Please consult our compatibility list before purchasing hard drives. For more details, please refer to this article.

3. Raw capacity calculated using 20 TB drives. Usable storage capacity may vary depending on drives used and RAID configuration. DS1825+ supports up to 18 drives with two Synology DX525, sold separately.

4. Performance figures are obtained through internal testing by Synology. Actual performance may vary depending on the testing environment, usage, and configuration. See performance charts for more information.

5. For the most up-to-date list of compatible NICs, please check our compatibility list.

6. This figure represents the recommended number of IP cameras operating at 1080p.

7. Synology Enterprise Series M.2 NVMe SSD drives can be installed through the built-in M.2 slots to enable SSD caching or create SSD storage pools. Drives are sold separately.Hardware Specifications
CPU
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
YesMemory
System Memory
8 GB DDR4 ECC SODIMM
Total Memory Slots
2
Maximum Memory Capacity
32 GB (16 GB x 2)
Notes
- Synology may revise pre-installed memory module specifications in response to component lifecycle and supply conditions. All revised components undergo the same rigorous validation to ensure equivalent compatibility, stability, and performance.
- Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
- For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.Storage
Drive Bays
8
Maximum Drive Bays with Expansion Unit
18 (DX525 x 2)
M.2 Drive Slots
2 (NVMe)
Drive Type (See all supported drives)
- 3.5" SATA HDD
- 2.5" SATA SSD
- M.2 2280 NVMe SSD
Hot Swappable Drive^note
Yes
Notes
- The hot swappable drive feature is not supported by M.2 SSD slots.
- Synology only guarantees full functionality, reliability, and performance for compatible drives. Please consult our compatibility list before purchasing hard drives. For more details, please refer to this article.External Ports
RJ-45 2.5GbE LAN Port
2
USB 3.2 Gen 1 Port
3
Expansion Port
2
Expansion Port Type
USB Type-CPCIe
PCIe Expansion
1 x Gen3 x8 slot (x4 link)Others
System Fan
120 mm x 120 mm x 2 pcs
Fan Speed Mode
- Full-Speed Mode
- Cool Mode
- Quiet Mode
Easy Replacement System Fan
Yes
Brightness Adjustable Front LED Indicators
Yes
Power Recovery
Yes
Noise Level^note
23.8 dB(A)
Scheduled Power On / Off
Yes
Wake on LAN / WAN
Yes
Power Supply Unit / Adapter
250 watts
AC Input Power Voltage
100V to 240V AC
Power Frequency
50/60 Hz, Single Phase
Power Consumption
60.1 watts (Access)
18.34 watts (HDD Hibernation)
British Thermal Unit
204.94 BTU/hr (Access)
62.54 BTU/hr (HDD Hibernation)
Notes
- For more information on how power consumption is measured, refer to this article.
- Noise testing was conducted with the Synology system fully installed with Synology SATA HDDs and in an idle state. Two G.R.A.S. Type 40AE microphones are placed at a 1 m distance from the front and rear of the device. Background noise: 16.49-17.51 dB(A), Temperature: 24.25-25.75^oC, Humidity: 58.2-61.8%Temperature
Operating Temperature
0^oC to 40^oC (32^oF to 104^oF)
Storage Temperature
-20^oC to 60^oC (-5^oF to 140^oF)
Operating Humidity
8% to 80% RH
Storage Humidity
5% to 95% RHCertification
- FCC
- CE
- BSMI
- VCCI
- RCM
- UKCA
- EAC
- CCC
- KC
- BISEnvironment
RoHS CompliantPackaging Content
- Main Unit X 1
- Accessory Pack X 1
- AC Power Cord X 1
- RJ-45 LAN Cable X 2Optional Accessories
- DDR4 ECC SODIMM: D4ES03-8G/D4ES03-16G
- Expansion Units: DX525
- Enterprise Series 3.5" SATA HDD: HAT5300 Series
- Plus Series 3.5" SATA HDD: HAT3300 Series
- Enterprise Series 2.5" SATA SSD: SAT5200 Series
- Enterprise Series M.2 2280 NVMe SSD: SNV3400 and SNV5400 Series
- 25GbE Network Interface Card: E25G30-F2
- 10GbE Network Interface Card: E10G30-F2/E10G30-T2/E10G18-T1
Notes
For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.DSM Specifications
Storage Management
Maximum Single Volume Size
- 200 TB (32 GB memory required)
- 108 TB
Maximum Internal Volume Number
32
M.2 SSD Storage Pool Support^note
Yes
SSD Read/Write Cache (Determining cache size)
Yes
SSD TRIM
Yes
Supported RAID Type
- Synology Hybrid RAID
- Basic
- JBOD
- RAID 0
- RAID 1
- RAID 5
- RAID 6
- RAID 10
RAID Migration
- Basic to RAID 1
- Basic to RAID 5
- RAID 1 to RAID 5
- RAID 5 to RAID 6
Volume Expansion with Larger HDDs
- Synology Hybrid RAID
- RAID 1
- RAID 5
- RAID 6
- RAID 10
Volume Expansion by Adding a HDD
- Synology Hybrid RAID
- JBOD
- RAID 5
- RAID 6
Global Hot Spare Supported RAID Type
- Synology Hybrid RAID
- RAID 1
- RAID 5
- RAID 6
- RAID 10
Notes
- Volumes over 108 TB require 32 GB of memory or more.
- Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration.
- Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored.
- Creating M.2 storage pools requires the use of Synology-verified SSDs, which are rigorously tested under extreme temperature conditions. Thermal parameters for SSDs and NAS units are fine-tuned to ensure optimal management of thermal conditions under I/O-intensive environments. (Learn more)File System
Internal Drives
- Btrfs
- ext4
External Drives
- Btrfs
- ext4
- ext3
- FAT32
- NTFS
- HFS+
- exFATFile Services
File Protocol
- SMB
- AFP
- NFS
- FTP
- WebDAV
- Rsync
Maximum Number of SMB Connections (FSCT-Based)
60
Windows Access Control List (ACL) Integration
Yes
NFS Kerberos Authentication
Yes
Notes
- Connection value of this model is tested with Synology SATA HDD fully populated and all onboard network ports
- Models with expandable memory are tested with the maximum supported quantity installed.
- SMB performance was evaluated using Microsoft File Server Capacity Tool (FSCT) version 1.3, with the following configuration:
Test workload: HomeFolder scenario provided by the FSCT tool
Test duration: 600 seconds
Domain controller and FSCT controller: Windows Server 2022
FSCT clients: 8 x Windows 10 machines
SMB feature: Directory leasing enabledAccount and Shared Folder
Maximum Local User Accounts
1,024
Maximum Local Groups
256
Maximum Shared Folder
256
Maximum Shared Folder Sync Tasks
8Hybrid Share
Hybrid Share Folder Number
10Hyper Backup
Data and Folder Backup
Yes
Entire System Backup
YesHigh Availability
Synology High Availability
YesLog Center
Syslog Events per Second
1,000Virtualization
VMware vSphere
ESXi 8.0 U2, ESXi 8.0 U1, ESXi 8.0, ESXi 7.0 U3, ESXi 7.0 U2, ESXi 7.0 U1, ESXi 7.0, ESXi 6.7 U3, ESXi 6.7 U2, ESXi 6.7 U1, ESXi 6.7, ESXi 6.5 U3, ESXi 6.5 U2, ESXi 6.5 U1, ESXi 6.5
Microsoft Hyper-V
Windows Server 2022
Citrix XenServer
XenServer 8, Citrix Hypervisor 8.2 LTSR CU1
OpenStack
Cinder