DS420j Specification

CPU

CPU Model

Realtek RTD1296

CPU Quantity

1

CPU Architecture

64-bit

CPU Frequency

4-core 1.4 GHz

Hardware Encryption Engine

√

Memory

System Memory

1 GB DDR4 non-ECC

Notes

Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's 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

4

Compatible Drive Type*

3.5" SATA HDD

2.5" SATA HDD

2.5" SATA SSD

Maximum Single Volume Size*

108 TB

Hot Swappable Drive

-

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.

External Ports

RJ-45 1GbE LAN Port

1

USB 3.2 Gen 1 Port*

2

Notes

The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.

File System

Internal Drives

EXT4

External Drives

EXT4

EXT3

FAT

NTFS

HFS+

exFAT

Appearance

Size (Height x Width x Depth)

184 mm x 168 mm x 230 mm

Weight

2.21 kg

Others

System Fan

80 mm x 80 mm x 2 pcs

Fan Speed Mode

Full-Speed Mode

Cool Mode

Quiet Mode

Low-power Mode

Brightness Adjustable Front LED Indicators

√

Power Recovery

√

Noise Level*

20.6 dB(A)

Scheduled Power On / Off

√

Wake on LAN / WAN

√

Power Supply Unit / Adapter

90 W

AC Input Power Voltage

100 V to 240 V AC

Power Frequency

50/60 Hz, Single Phase

Power Consumption*

21.71 W (Access)

7.88 W (HDD Hibernation)

British Thermal Unit

74.08 BTU/hr (Access)

26.89 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: 24.25-25.75˚C; Humidity: 58.2-61.8%

Temperature

Operating Temperature

0°C to 40°C (32°F to 104°F)

Storage Temperature

-20°C to 60°C (-5°F to 140°F)

Relative Humidity

5% to 95% RH

Certification

EAC

CCC

FCC

CE

BSMI

VCCI

RCM

Warranty

2 Years

Notes: The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)

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 1

Quick Installation Guide X 1

Optional Accessories

VisualStation: VS960HD/VS360HD

Surveillance Device License Pack

Notes:

1.Model specifications are subject to change without prior notice.

2.The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time.

3.The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations.

4.If usage requirements exceed the specifications above, please contact our regional partners for professional advice.