Synology DX517 Manual

Expansion Unit DX517
Hardware Installation Guide

Table of Contents
Chapter 1: Before You Start
Package Contents 3
Expansion Unit at a Glance 4
Safety Instructions 5
Chapter 2: Hardware Setup
Tools and Parts for Drive Installation 6
Install Drives 6
Connect with Synology DiskStation 9
Replace System Fan 9
Conrm Connection and Manage Storage Spaces 10
Learn More 11
Appedix A: Specications
Appedix B: LED Indicator Table
Synology_QIG_DX517_20161128
2

Thank you for purchasing this Synology product! Before setting up your new expansion unit, 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 expansion unit.
Note: All images below are for illustrative purposes only, and may differ from the actual product.
Package Contents
Main unit x 1 AC power cord x 1
Screws for 2.5” drives x 24
Expansion cable x 1 Drive tray key x 2
Before You Start 1
Chapter
3
3

4Chapter 1: Before You Start
Expansion Unit at a Glance
No. Article Name Location Description
1 LED Indicator
Front
Displays the status of internal drives and the system. For more
information, please see Appedix B: LED Indicator Table.
2 Power Button
1. Press to power on the expansion unit.
2. Press and hold to shut down.
Note: The expansion unit will be turned on or off automatically when the
linked DiskStation powers on or off. However, the POWER button has no
power-off function when volume is created to prevent accidental volume
damage.
3 Drive Tray Lock Lock or unlock drive trays.
4 Drive Tray Install drives (hard disk drives or solid state drives) here.
5 Power Port
Back
Connect the AC power cord here.
6 Expansion Port Connect Synology DiskStation here. For the list of supported models,
please see the Appedix A: Specications.
7 Fan Disposes of excess heat and cools the expansion unit. If the fan
malfunctions, the ALERT LED indicator will show a blinking red light.

5Chapter 1: Before You Start
Safety Instructions
Keep away from direct sunlight and away 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 electrical 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 Drive Installation
• A screwdriver
• At least one 3.5” or 2.5” SATA drive (please visit www.synology.com 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 Press the lower part of the drive tray to pop out the handle.
2 Pull the drive tray handle in the direction as indicated below to remove the drive tray.
Hardware Setup
6
2
Chapter

7Chapter 2: Hardware Setup
3 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 blue area (shown below) of the drive tray. Turn the tray upside down and tighten
the screws to secure the drive in place.
4 Insert the loaded drive tray into the empty drive bay.
Note: Make sure the tray is pushed in all the way. Otherwise, the drive might not be able to function properly.

8Chapter 2: Hardware Setup
5 Press the handle in ush with the front panel to hold the drive tray in place.
6 Insert the drive tray key into the drive tray lock, turn the key clockwise to lock the handle of the drive tray, and
then remove the key.
7 Repeat the steps above to assemble the other drives you have prepared.
8 Drives are numbered as shown below.
Note: If you want to create a RAID volume, we recommend all installed drives be the same size in order to optimize
drive capacity usage.

9Chapter 2: Hardware Setup
Connect with Synology DiskStation
1 Connect one end of the power cord to the power port of the expansion unit, and the other to the power outlet.
2 Connect the expansion cable to the expansion ports of DX517 and Synology DiskStation:
After the connection is complete, DX517 will be turned on or off automatically when the connected DiskStation
powers on or off.
Replace System Fan
The ALERT LED indicator of your DX517 will be static orange if either of the system fans is not working. Follow
the steps below to replace the malfunctioning fan with a good one.
1 Shut down your expansion unit. Disconnect all cables connected to your expansion unit to prevent any
possible damages.
2 Fans are numbered as follows:

10 Chapter 2: Hardware Setup
3 Remove the screws that secure the fan panels and pull the panels from the expansion unit.
4 Remove the malfunctioning fans by disconnecting the fan cable from the connectors.
5 Connect the cables of the new fans to the connectors and tighten the screws removed in step 3.
Conrm Connection and Manage Storage Spaces
1 Log in to the DiskStation Manager (DSM) of the main DiskStation unit.
2 Go to Control Panel > External Devices > External Devices to conrm the expansion unit is successfully
connected.