Synology Network Attached Storage DS720+ 2bay NAS DiskStation (Diskless)

Scalable NAS with SSD cache acceleration capability

Synology DS720+ is a compact network-attached storage solution to streamline data and multimedia management. Two built-in M.2 SSD slots and Synology SSD Cache technology allow you to boost system I/O and application performance. Scalable storage design lets you start small and expand storage capacity with Synology DX517 as your data grows.

CPU

4-core 2.0 GHz, burst up to 2.7 GHz

Cache Acceleration

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

Performance

Average 15% boost to computing-intensive applications

Scalability

Expand up to 7 drives with a DX517 expansion unit

Optimize performance and capacity

DS720+ 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 five more drives with 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.
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)
Yes
Memory
System Memory
2 GB DDR4 non-ECC
Total Memory Slots
1
Maximum Memory Capacity
6 GB (2 GB + 4 GB)
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 suppliers 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
2
Maximum Drive Bays with Expansion Unit
7 (DX517 x 1)
M.2 Drive Slots
2 (NVMe)
Compatible Drive Type
3.5″ SATA HDD
2.5″ SATA HDD
2.5″ SATA SSD
M.2 2280 NVMe SSD
Maximum Internal Raw Capacity
32 TB (16 TB drive x 2) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units
112 TB (32 TB + 16 TB drive x 5) (Capacity may vary by RAID types)
Maximum Single Volume Size
108 TB
Hot Swappable Drive
Yes
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.
The maximum raw capacity is not limited by the maximum single volume size. Synology NAS models may utilize capacities over the maximum single volume size as long as each volume created is below the limit.
Each internal volume (may consist of multiple drives) is expandable up to 108TB.
External Ports
RJ-45 1GbE LAN Port
2 (with Link Aggregation / Failover support)
USB 3.0 Port
2
eSATA Port
1
File System
Internal Drives
Btrfs
EXT4
External Drives
Btrfs
EXT4
EXT3
FAT
NTFS
HFS+
exFAT
Notes
exFAT Access is purchased separately in Package Center.
Others
System Fan
92 mm x 92 mm x 1 pcs
Fan Speed Mode
Full-Speed Mode
Cool Mode
Quiet Mode
Brightness Adjustable Front LED Indicators
Yes
Power Recovery
Yes
Noise Level
18.4 dB(A)
Scheduled Power On / Off
Yes
Wake on LAN / WAN
Yes
Power Supply Unit / Adapter
65 W
AC Input Power Voltage
100 V to 240 V AC
Power Frequency
50/60 Hz, Single Phase
Power Consumption
16.44 W (Access)
6.19 W (HDD Hibernation)
British Thermal Unit
56.1 BTU/hr (Access)
21.12 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: 24.25-25.75C 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)
Relative Humidity
5% to 95% RH
Certification
EAC
VCCI
CCC
RCM
KC
FCC
CE
BSMI
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
DDR4 non-ECC SODIMM: D4NESO-2666-4G
Expansion Units: DX517
2.5″ SATA SSD: SAT5200
M.2 2280 NVMe SSD: SNV3400
VisualStation: VS960HD/VS360HD
Surveillance Device License Pack
Notes : All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
DSM Specifications
Storage Management
Maximum Internal Volume Number
64
Maximum iSCSI Target Number
128
Maximum iSCSI LUN
256
iSCSI LUN Clone/Snapshot, Windows ODX
Yes
SSD Read / Write Cache
Yes
SSD TRIM
Yes
Supported RAID Type
Synology Hybrid RAID
Basic
JBOD
RAID 0
RAID 1
RAID 5 (with Expansion Unit)
RAID 6 (with Expansion Unit)
RAID 10 (with Expansion Unit)
RAID Migration
Basic to RAID 1
Basic to RAID 5 (with Expansion Unit)
RAID 1 to RAID 5 (with Expansion Unit)
RAID 5 to RAID 6 (with Expansion Unit)
Volume Expansion with Larger HDDs
Synology Hybrid RAID
RAID 1
RAID 5 (with Expansion Unit)
RAID 6 (with Expansion Unit)
RAID 10 (with Expansion Unit)
Volume Expansion by Adding a HDD
Synology Hybrid RAID
JBOD (with Expansion Unit)
RAID 5 (with Expansion Unit)
RAID 6 (with Expansion Unit)
Global Hot Spare Supported RAID Type
Synology Hybrid RAID
RAID 1 (with Expansion Unit)
RAID 5 (with Expansion Unit)
RAID 6 (with Expansion Unit)
RAID 10 (with Expansion Unit)
File Services
File Protocol
CIFS/AFP/NFS/FTP/WebDAV
Maximum Concurrent CIFS/AFP/FTP Connections
500
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion)
1,500
Windows Access Control List (ACL) Integration
Yes
NFS Kerberos Authentication
Yes
Account andShared Folder
Maximum Local User Accounts
2,048
Maximum Local Groups
256
Maximum Shared Folder
512
Maximum Shared Folder Sync Tasks
8
High Availability
Synology High Availability
Yes
Log Center
Syslog Events per Second
800
Virtualization
VMware vSphere 6 with VAAI
Yes
Windows Server 2016
Yes
Citrix Ready
Yes
OpenStack
Yes
General Specifications
Networking Protocols
SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
Chrome
Firefox
Edge
Internet Explorer 10 onwards
Safari 10 onwards
Safari (iOS 10 onwards)
Chrome (Android 6.0 onwards)
Add-on Packages