Synology DS1520+ Intel Celeron J4125, 8 GB DDR4, 4x LAN, 2x USB 3.0, 2x eSata

Synology DiskStation DS1520+ is an ideal network-attached storage solution suitable for small office and IT enthusiasts. Two built-in M.2 SSD slots and Synology SSD Cache technology allow you to boost system I/O and application performance. The scalable storage design of DS1520+ lets you start small and expand storage capacity with Synology DX517 as your data grows.

4-core 2.0 GHz, burst up to 2.7 GHz

2 x built-in M.2 2280 NVMe SSD slots

Average 19.8% boost to computing-intensive applications1

Expand up to 15 drives with a DX517 expansion unit

Optimize performance and capacity
DS1520+ provides two built-in M.2 SSD slots so that you can take full advantage of Synology SSD Cache functionality. Add SSD cache for up to 20 times faster I/O response without using front drive bays. You can add 10 more drives with two Synology DX517 to expand storage capacity.

Accelerate demanding applications
A more powerful CPU speeds up computing-intensive applications. The new 4-core processor boosts photo indexing, database response times, and web PHP response efficiency. Easily categorize your photo memories, smoothly manage files across computers and mobile devices, and enjoy blazing fast web applications.


Access and sync your files seamlessly
Synology Drive provides a built-in universal portal to access your data anytime and anywhere, and synchronize all your files across platforms, including Windows, macOS, Linux, Android, and iOS. Learn more

Sync files on demand: Save the storage space and network bandwidth of your PC.

Go back in time: Easily retrieve previous versions of your shared files.

Back up your data: Protect your files as scheduled or in real-time.

Real-time collaboration on your private cloud
Synology Office is a collaboration package combining the convenience and usability of public clouds with the data privacy and security guaranteed by private clouds. It allows you to work seamlessly together on documents and spreadsheets in a protected environment.

Virtual Machine Manager
Virtual Machine Manager enables you to test new software in sandboxes, isolate your customers' machines, and increase the flexibility of your server. You can easily run Windows, Linux, and Virtual DSM on your Synology NAS by just a few steps.


Snapshots for virtual machines
Perfectly clone and restore a virtual machine within seconds.

Live migration
Seamlessly migrate Virtual DSM instances from a Synology NAS to another.

Multi-tenant environment
Create multiple isolated virtual machines for subsidiary business units or departments.

Multimedia
Complete multimedia solution for management, streaming, and playback.

Hyper Backup
Store multiple backup versions with block-level incremental data backup and cross-version deduplication.

Desktop Backup
Simplified backup solution for your Mac, PC, and mobile devices.

Snapshot Replication
Schedulable and instantaneous data protection for shared folders and iSCSI LUNs for disaster prevention.

Surveillance Station
Complete surveillance solution for recording, monitoring, and management.

Virtual Machine Manager
Run various operating systems in isolated sandboxes. Seamlessly clone, restore and migrate virtual machines.




Hardware Specs


CPU
CPU Model Intel Celeron J4125
CPU Architecture 64-bit
CPU Frequency 4-core 2.0 (base) / 2.7 (burst) GHz
Hardware Encryption Engine (AES-NI)

Memory
System Memory 8 GB DDR4 non-ECC
Memory Module Pre-installed 8 GB (4 GB + 4 GB)
Total Memory Slots 1

Notes
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.
Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.


Storage
Drive Bays 5
Maximum Drive Bays with Expansion Unit 15 (DX517 x 2)
M.2 Drive Slots 2 (NVMe)
Compatible Drive Type* (See all supported drives)
3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
M.2 2280 NVMe SSD
Maximum Single Volume Size* 108 TB
Hot Swappable Drive

Notes
"Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
Each internal volume (may consist of multiple drives) is expandable up to 108TB.

External Ports
RJ-45 1GbE LAN Port 4 (with Link Aggregation / Failover support)
USB 3.0 Port 2
eSATA Port 2

File System
Internal Drives
Btrfs
EXT4
External Drives
Btrfs
EXT4
EXT3
FAT
NTFS
HFS+
exFAT*

Notes exFAT Access is purchased separately in Package Center.

Appearance
Size (Height x Width x Depth) 166 mm x 230 mm x 223 mm
Weight 2.62 kg

Others
System Fan 92 mm x 92 mm x 2 pcs
Fan Speed Mode
Full-Speed Mode
Cool Mode
Quiet Mode
Brightness Adjustable Front LED Indicators
Power Recovery
Noise Level* 20.8 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 120 W
AC Input Power Voltage 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption* 36.67 W (Access)
15.51 W (HDD Hibernation)
British Thermal Unit 125.21 BTU/hr (Access)
52.96 BTU/hr (HDD Hibernation)

Notes
Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75°C; Humidity: 58.2-61.8%

Temperature
Operating Temperature 0°C to 40°C (32°F to 104°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F)
Relative Humidity 5% to 95% RH

Certification
EAC
VCCI
CCC
RCM
KC
FCC
CE
BSMI

Warranty
3 Years

Notes The warranty period starts from the purchase date as stated on your purchase receipt.

Environment
RoHS Compliant

Packaging Content
Main Unit X 1
Accessory Pack X 1
AC Power Adapter X 1
AC Power Cord X 1
RJ-45 LAN Cable X 2
Quick Installation Guide X 1

Optional Accessories
Expansion Units: DX517
2.5" SATA SSD: SAT5200
M.2 2280 NVMe SSD: SNV3400
VisualStation: VS960HD/VS360HD
Surveillance Device License Pack