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Synology disk station 720+ 2bay Intel Celeron J4125 2GB-DS720+

Model: DS720+
SKU: 55181
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Description for Synology disk station 720+ 2bay Intel Celeron J4125 2GB-DS720+

  • Plus Series 2-bay NAS for Offices and IT Pros
  • Diskless 0 TB
  • Supports RAID SHR, 0,1

DiskStation DS720+

Simplify the file management experience

NAS with SSD cache acceleration and expandable storage capacity

Synology DS720 + is a lightweight network connection storage solution that simplifies the management of data and multimedia files. Built-in dual M.2 SSD slots, support Synology SSD cache technology, can improve system I / O and application performance. The expandable capacity design, combined with Synology DX517, allows you to expand storage capacity step by step as the amount of data increases.


4 core 2.0 GHz, the highest clock can reach 2.7 GHz

Cache acceleration

Built-in dual M.2 2280 NVMe SSD slot


Computing-intensive applications average 15% 1


With a DX517 expansion unit can be expanded to 7 hard drives

Optimized performance and capacity

DS720 + has a built-in dual M.2 SSD slot, allowing you to make good use of Synology SSD cache. Creating a cache can increase I / O response time by 20 times without occupying the front hard drive slot. With Synology DX517, five hard drives can be expanded to obtain more storage capacity.

Improve application performance

The powerful CPU can accelerate the performance of intensive computing applications. The new 4-core processor improves the efficiency of photo indexing, database response time, and web page PHP response performance. It can easily categorize your photo collections, and smoothly manage files between computers and mobile devices, while enjoying excellent webpage application.

Synology Drive


Web Server

Seamlessly access and synchronize your files

Synology Drive provides a built-in universal portal, allowing you to access data anytime, anywhere, and synchronize Windows, macOS, Linux, Android, and iOS files across platforms.

  • File synchronization on demand: reserve storage space and save bandwidth for your computer.
  • Version backtracking: Shared files can also be easily restored to previous versions.
  • Backup data: support real-time or scheduled backup to protect files.

Collaborate instantly on your own private cloud

Synology Office is a collaboration package that not only has the convenience and usability of a public cloud, but also protects the privacy and security of data like a private cloud, allowing you to seamlessly collaborate documents and spreadsheets in a protected environment.

  • Collaborate online documents in real time to increase productivity
  • Simultaneously communicate via Synology Chat while editing documents or spreadsheets
  • With a click of the mouse, you can use the version control function to review all changes and get the previous version

Seamless integration of mobile devices

Synology mobile application allows you to access data quickly and securely no matter where you are.

  • DS Audio
  • Moments
  • DS Video

Designed to improve reliability, Synology warranty gives you peace of mind

DS720 + is designed to provide reliable data storage services, and comes with Synology's three-year hardware warranty. Customers in some regions can also purchase a two-year extended warranty, which can be used with peace of mind for five years. understand more

Powered by Synology DSM

 PC backup

Whether you use a PC, Mac or mobile device, PC backup can provide you with a simple backup solution.


Comprehensive multimedia management, streaming and playback solutions.

Snapshot Replication

Scheduled and near real-time data protection ensures that shared folders and iSCSI LUNs can be quickly restored in the event of a disaster.

Synology Drive

A comprehensive solution for file management and synchronization.

Hyper Backup

Block-level incremental backup and inter-version deduplication technology allow you to store multiple backup versions.

 Surveillance Station

Provide a complete home monitoring solution to meet your video recording and monitoring needs.

  • 1 Hard drive tray
  • 2 Hard disk tray lock
  • 3 Status Indicator
  • 4 Hard disk status indicator
  • 5 USB 3.0 port
  • 6 Power button and indicator
  • 7 System fan
  • 8 1GbE RJ-45 network port
  • 9 Reset button
  • 10 eSATA port
  • 11 Power port
  • 12 Kensington security slot



Processor modelIntel Celeron J4125

Processor architecture64-bit

Processor clock4-core 2.0 (base frequency) / 2.7 (burst frequency) GHz

Hardware encryption engine (AES-NI)


System memory2 GB DDR4 non-ECC

Total number of memory slots1

Memory can be expanded to6 GB (2 GB + 4 GB)

  • Please purchase original Synology memory modules for best compatibility and reliability. If you do not use Synology memory modules when expanding memory capacity, Synology will not be able to provide full product warranty or technical support.
  • Synology reserves the right to replace memory components of the same or higher frequency depending on the availability of the supplier's products. Its compatibility and stability have passed the same rigorous testing and inspection, so please use it with confidence.

Storage device

Number of disk slots2

Maximum number of disk slots for installing expansion devices7

M.2 drive bay2 (NVMe)

Compatible disk types * (see all supported disks)
  • 3.5 "SATA HDD
  • 2.5 "SATA HDD
  • 2.5 "SATA SSD
  • M.2 2280 NVMe SSD

Maximum internal net total storage capacity32 TB (16 TB drive x 2) (Capacity may vary by RAID types)

Maximum total net storage capacity with expansion device112 TB (32 TB + 16 TB drive x 5) (Capacity may vary by RAID types)

Maximum single storage space capacity *108 TB

Disk hot swap support

  • Compatible disk type refers to the type of hard drive that is confirmed to be compatible with the product after the actual measurement.
  • The maximum net total storage capacity is not limited by the maximum single storage space capacity. Synology NAS can use the capacity beyond the maximum single storage space to create other storage spaces, the maximum capacity of which depends on the support of each model. (See more content)
  • The internal storage space can be expanded, but the expanded single storage space cannot exceed 108 TB.

External port

RJ-45 1GbE network port2 (Support Link Aggregation / Failover)

USB 3.0 port2

eSATA port1

File system

Internal disk
  • Btrfs
  • EXT4

External disk
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS +
  • exFAT *

RemarksexFAT Access must be purchased separately from the package center.


Size (Height X Width X Depth)166 mm x 106 mm x 223 mm

weight1.51 kg

other projects

System fan92 mm x 92 mm x 1 pcs

Fan mode
  • Full speed mode
  • Low temperature mode
  • Silent mode

Front panel LED indicator can adjust brightness

Automatic power supply recovery

Noise value*18.4 dB (A)

Timer switch

Wake on LAN

Power supply / transformer65 W

AC input voltage100 V to 240 V AC

Current frequency50/60 Hz, single frequency

Power consumption *16.44 W (Access)
6.19 W (HDD Hibernation)

British Thermal Unit56.1 BTU / hr (Access)
21.12 BTU / hr (HDD Hibernation)

  • The power consumption test data is obtained by testing the Western Digital 1TB WD10EFRX hard drive.
  • Noise test environment: Seagate 2TB ST2000VN000 hard drive is in standby mode, with two GRAS Type 40AE microphones installed at a distance of 1 meter in front and back of the Synology NAS; background noise value: 16.49-17.51 ​​dB (A); temperature: Celsius 24.25-25.75 degrees; humidity: 58.2-61.8%.


Operating temperature0 ° C to 40 ° C (32 ° F to 104 ° F)

Storage temperature-20 ° C to 60 ° C (-5 ° F to 140 ° F)

Relative humidity5% to 95% RH

Certification body

  • EAC
  • VCCI
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI


3 year hardware warranty, extendable to 5 year coverage- EW201

RemarksThe warranty period begins on the purchase date indicated on the purchase receipt. (See more content)


RoHS Compliant

Package contents

  • Host X 1
  • Accessory Pack X 1
  • Transformer X 1
  • Power cord X 1
  • RJ-45 network cable X 2
  • Quick Installation Guide X 1

Optional accessories

  • D4NESO-2666-4G DDR4 non-ECC SO-DIMM *
  • Expansion unit: DX517 X 1
  • VS360HD
  • VS960HD
  • Monitoring device authorization

RemarksThe memory module will operate at the maximum frequency set by the CPU manufacturer.

Read More

Specifications for Synology disk station 720+ 2bay Intel Celeron J4125 2GB-DS720+

  • DS720+
Microless SKU
  • 55181
Date first available
  • 19 August, 2020
Shipping Weight
  • 2.50 Kg
Shipping Dimensions
  • 12.00 cm x 29.00 cm x 27.51 cm

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