Synology NAS DS720+ Manual

Synology NAS DS720+
Hardware Installation Guide

Table of Contents
Chapter 1: Before You Start
Package Contents 3
Synology DS720+ at a Glance 4
LED Indicator Table 5
Hardware Specications 6
Optional Accessories 7
Spare Parts 7
Safety Instructions 8
Chapter 2: Hardware Setup
Tools and Parts for Component Installation 9
Install Drives 9
Start Up Your Synology NAS 11
Add a Memory Module on Synology NAS 12
Add an M.2 NVMe SSD to Synology NAS 13
Chapter 3: System Maintenance
Initial Troubleshooting Guide 15
Chapter 4: Install DSM on Synology NAS
Install DSM with Web Assistant 16
Learn More 16
Synology_HIG_DS720+_20200204
2

Thank you for purchasing this Synology product! Before setting up your new Synology NAS, please check the
package contents to verify that you have received the items below. Also, make sure to read the safety instructions
carefully to avoid harming yourself or damaging your Synology NAS.
Note: All images below are for illustrative purposes only, and may di󰀨er from the actual product.
Package Contents
Main unit x 1 AC power cord x 1
AC power adapter x 1
Screws for 2.5"hard drives x 10 Hard drive tray key x 2 RJ-45 LAN cable x 2
Before You Start 1
3
Chapter

4Chapter 1: Before You Start
Synology DS720+ at a Glance
13
3
1
259
8
12
6
7
10
11
4
No. Article Name Location Description
1 Drive Tray
Front
Install drives (hard disk drives or solid state drives) here.
2 Drive Tray Lock Lock or unlock drive trays.
3 Status Indicator Displays the status of the system. For more information, see "LED Indicator
Table".
4 Drive Status
Indicator
Displays the status of each drive. For more information, see "LED Indicator
Table".
5 USB 3.0 Port Connect external drives or other USB devices to the Synology NAS here.
6 Power Button
1. Press to power on your Synology NAS.
2. To power o󰀨 your Synology NAS, press and hold until you hear a beep
sound and the Power LED starts blinking.
7 Fan
Rear
Disposes of excess heat and cools the system. If the fan malfunctions, the
Synology NAS will emit a beeping sound.
8 LAN Port Connect a network cable here.
9 RESET Button
1. Press and hold until you hear a beep sound to restore the IP address,
DNS server, and password for the admin account to default.
2. Press and hold until you hear a beep, then press and hold again until you
hear three beeps to return the Synology NAS to “Not Installed” status so
that DiskStation Manager (DSM) can be reinstalled.
10 eSATA Port Connect external SATA drives or Synology Expansion Unit1to the
Synology NAS here.
11 Power Port Connect power cord here.
12 Kensington
Security Slot Attach a Kensington security lock here.
13 USB 3.0 Port Connect external drives or other USB devices to the Synology NAS here.
1For more information about Synology Expansion Unit supported by your Synology NAS, please visit www.synology.com.

5Chapter 1: Before You Start
LED Indicator Color Status Description
STATUS
Green Static Volume normal
Orange Blinking
Volume degraded/Volume crashed
Volume not created
DSM not installed
O󰀨 HDD hibernation
Disk 1-2
Green
Static Drive ready and idle
Blinking Accessing drive
Orange Static Drive error/Port disabled1
O󰀨 No internal drive/Advanced HDD hibernation
Power
Blue
Static Powered on
Blinking Booting up/Shutting down
O󰀨 Powered o󰀨
Rear LAN
(on upper side of jack)
Green
Static Network connected
Blinking Network active
O󰀨 No network
Rear LAN
(on lower side of jack)
Green Static Gigabit connection
Orange Static 100 Mbps connection
O󰀨 10 Mbps connection/No network
Note: This table is applicable to Synology NAS running DSM 6.2.3 and earlier. For DSM 6.2.4 and above, please refer to this article for
the latest information.
LED Indicator Table
5
Appendix
1Please try to restart your Synology NAS or re-insert the drives, then run the HDD/SSD manufacturer's diagnostic tool to check the health
status of the drives. If you can log into DSM, please run the built-in S.M.A.R.T. test to scan the drives. If the problem remains unresolved,
please contact Synology Technical Support for help.

6Chapter 1: Before You Start
Item DS720+
Compatible Drive Type • 3.5"/2.5" SATA x 2
• M.2 2280 NVMe SSD x 2
Maximum Internal Raw Capacity 32 TB (2 X 16 TB HDD)
External Port • USB 3.0 x 2
• eSATA x 1
LAN Ports 1GbE (RJ-45) x 2
Size (H x W x D) (mm) 166 x 106 x 223
Weight (kg) 1.51
Supported Client • Windows 7 and 10
• Mac OS X 10.11 onward
File Systems • Internal: Btrfs, ext4
• External: Btrfs, ext4, ext3, FAT, NTFS, HFS+, exFAT1
Supported RAID Types • Basic • JBOD • RAID 0 • RAID 1
• Synology Hybrid Raid (1-Disk Fault Tolerance)
Agency Certications • FCC Class B • CE Class B • BSMI Class B
• EAC • VCCI • CCC • RCM • RoHS Compliant
HDD Hibernation Yes
Scheduled Power On/O󰀨 Yes
Wake on LAN Yes
Language Localization
Environment Requirements
• Line voltage: 100 V to 240 V AC
• Frequency: 50/60 Hz
• Operating Temperature: 32 to 104˚F (0 to 40˚C)
• Storage Temperature: -5 to 140˚F (-20 to 60˚C)
• Relative Humidity: 5% to 95% RH
Note: Model specications are subject to change without notice. Please refer to www.synology.com for the latest information.
Hardware Specications
6
1Support for exFAT can be enabled by purchasing and downloading exFAT Access in Package Center.

7Chapter 1: Before You Start
Optional Accessories
With Synology accessories, you can customize your Synology NAS to t di󰀨erent business environments without
worrying about compatibility and stability. Visit www.synology.com/compatibility for more information.
•Memory Module
Model Name Picture Description
D4NESO-2666-4G DDR4 non-ECC unbu󰀨ered
SO-DIMM 4GB
Spare Parts
Visit www.synology.com/products/spare_parts if you need to replace system fans, disk trays, or power supply
units.
Model Name Picture Description
Adapter 65W_2 Adapter 65W Level VI
Disk Tray (Type D9) 3.5"/2.5" HDD Tray With Locker
Fan 92*92*25_1 System Fan 92*92*25 mm

8Chapter 1: Before You Start
Safety Instructions
Keep away from direct sunlight and from chemicals. Make sure the environment does not experience
abrupt changes in temperature or humidity.
Place the product right side up at all times.
Do not place near any liquids.
Before cleaning, unplug the power cord. Wipe with damp paper towels. Do not use chemical or
aerosol cleaners.
To prevent the unit from falling over, do not place on carts or any unstable surfaces.
The power cord must plug in to the correct supply voltage. Make sure that the supplied AC voltage is
correct and stable.
To remove all electric current from the device, ensure that all power cords are disconnected from the
power source.
Risk of explosion if battery is replaced with an incorrect type. Dispose of used batteries appropriately.

Tools and Parts for Component Installation
Please prepare the following tools and parts before setting up your Synology NAS:
• A screwdriver (only for 2.5" drives)
• At least one 3.5" or 2.5" SATA drive (please visit www.synology.com/compatibility for compatible drive
models)
Warning: If you install a drive that contains data, the system will format the drive and erase all existing data.
Please back up any important data before installation.
Install Drives
1 To remove the drive tray, pull on the circled area in the indicated direction as shown in the image below.
2 Load drives in the drive trays.
• For 3.5" drives: Remove the fastening panels from the sides of the drive tray. Place the drive in the drive
tray. Then insert the fastening panels to secure the drive in place.
• For 2.5" drives: Remove the fastening panels from the sides of the drive tray and store them in a safe
place. Place the drive in the area of the drive tray indicated by a blue rectangle below. Turn the tray upside
down and tighten the screws to secure the drive in place.
Hardware Setup 2
Chapter
9

10 Chapter 2: Hardware Setup
3 Insert the loaded drive tray into the empty drive bay and push it back until you hear a click when the tray is
locked into place.
4 Repeat the steps above to install the other drives you have prepared.
5 Drives are numbered as shown below.
Note: If you plan to create a RAID volume, we recommend installing drives of identical size to make the best
use of drive capacity.