Synology DX1222 Manual

Expansion Unit DX1222
Hardware Installation Guide

Table of Contents
Chapter 1: Before You Start
Package Contents 3
Synology DX1222 at a Glance 4
Other LED Indicators 5
Hardware Specication 6
Spare Parts 7
Safety Instructions 8
Chapter 2: Hardware Setup
Tools and Parts for Component Installation 9
Install Drives 9
Connect with Synology NAS 12
Chapter 3: System Maintenance
Replace System Fan 13
Conrm Connection and Manage Storage Spaces 15
2
Synology_HIG_DX1222_20210331

3
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
Mini-SAS HD expansion cable x 1
Hard drive tray key x 2
Screws for 2.5" drives x 52
Before You Start 1
Chapter

4Chapter 1: Before You Start
Synology DX1222 at a Glance
No. Article Name Location Description
1 STATUS Indicator
Front
Displays the status of the system. For more information, see
"LED Indicator Table".
2 ALERT Indicator Displays warnings regarding fan or temperature. For more
information, see "LED Indicator Table".
3 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.
4 LINK Indicator Displays the status of the Synology NAS connection. For
more information, see "LED Indicator Table".
5 DRIVE Status Indicator Displays the status of each drive. For more information, see
"LED Indicator Table".
6 Drive Tray Install drives (hard disk drives or solid state drives) here.
7 Drive Tray Lock Lock or unlock drive trays.
8 Power Port
Rear
Connect power cord here.
9 Fan Disposes of excess heat and cools the system. If the fan
malfunctions, the Synology NAS will emit a beeping sound.
10 Expansion Port Connect Synology NAS here.
6
7
1
2 3
4
5
8
9
10
5
7

5Chapter 1: Before You Start
LED Indicator Table
LED Indicator Color Status Description
POWER
Blue Static Powered on
O󰀨 Powered o󰀨
Status
Green Static Volume normal
O󰀨 No volume/HDD Hibernation
DRIVE status Indicator
(on tray)
Green
Static Drive ready and idle
Blinking Accessing drive
Orange Static Drive error/Port disabled1
O󰀨 No internal Drive
ALERT
Red Blinking System error2
O󰀨 System normal
LINK
Green Static Synology NAS connected
O󰀨 Synology NAS disconnected
Note:
1 Please 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 sign in to 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.
2 If the ALERT LED continuously blinks red, this indicates there are system errors such as fan failure, system
overheating, or volume degrade. Please sign in to DSM for detailed information.

6Chapter 1: Before You Start
Hardware Specication
Item DX1222
Compatible Drive Type 3.5"/2.5" SATA x 12
Size (H x W x D) (mm) 270 x 300 x 340
Weight (kg) 9.02
Agency Certication • FCC Class B • CE Class B • UKCA • BSMI Class B
• EAC • VCCI • RCM • KC • UL • RoHS Compliant
HDD Hibernation Yes
Environment Requirement
• 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.

7Chapter 1: Before You Start
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
Disk Tray (Type D6) 3.5"/2.5" Drive Tray With Lock
FAN 120*25_6 System Fan 120*120*25 mm x 2
PSU 550W_1 SFX PSU 550W
Cable MiniSASHD_
EXT_1 External MiniSAS HD Cable

8Chapter 1: Before You Start
Safety Instructions
Keep away from direct sunlight and away from chemicals. Ensure a stable environment
with no abrupt changes in temperature or humidity.
Place the unit right side up at all times.
Keep the unit away from liquids.
Before cleaning, unplug the power cord. Do not use chemical or aerosol cleaners. Wipe
with damp paper towels.
To prevent the unit from falling over, do not place it on carts or any unstable surfaces.
The power cord must plug into the correct supply voltage. Ensure the supplied AC voltage
is correct and stable.
Warning, electric shock hazard. To remove all electrical current from the device, ensure
that all power cords are disconnected from the power source.
Risk of explosion if the battery is replaced by an incorrect type. Dispose of used batteries
appropriately.
Power cord must be plugged into a socket-outlet with earthing connection.
Keep body parts away from moving fan.
This product must be installed by qualied personnel in a restricted access location (like
dedicated equipment rooms, service closets).

9
Tools and Parts for Component Installation
Please prepare the following tools and parts before setting up your expansion unit:
• 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 Press the right part of the hard drive tray to unlock the handle.
DX1222
2 Pull out the hard drive tray handle as shown below to remove the hard drive tray.
DX1222
Hardware Setup 2
Chapter

10 Chapter 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 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.
4 Insert the loaded hard drive tray into the empty hard drive bay and push it into position by the upper half of the
handle.
DX1222
Note: Make sure that the drive tray is completely inserted. Otherwise, the drive might not function properly.