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The DS420j is a cost-effective, 4-bay network-attached storage (NAS) solution designed for home users and enthusiasts looking to build a secure, centralized data hub. Whether you're storing family photos, streaming media, backing up personal devices, or setting up a private cloud, the DS420j offers the perfect balance of capacity, reliability, and Synology’s intuitive DSM interface.
With support for up to 64TB of raw storage (4 x 16TB drives) and powered by a 64-bit 4-core processor, the DS420j ensures smooth file management and multimedia streaming, even across multiple users.
Table shows the comparison of similar products
|
Product Code |
|||
|
CPU Model |
Marvell Armada 3700 88F3720 |
Realtek RTD1296 |
Realtek RTD1296 |
|
CPU Quantity |
1 |
1 |
1 |
|
CPU Architecture |
64-bit |
64-bit |
64-bit |
|
CPU Frequency |
2-core 800 MHz |
4-core 1.4 GHz |
4-core 1.4 GHz |
|
Hardware Encryption Engine |
√ |
√ |
√ |
|
System Memory |
512 MB DDR3L non-ECC |
512 MB DDR4 non-ECC |
1 GB DDR4 non-ECC |
|
Drive Bays |
1 |
2 |
4 |
|
Compatible Drive Type* |
3.5" SATA HDD 2.5" SATA HDD (with optional 2.5" Disk Holder) |
3.5" SATA HDD 2.5" SATA HDD (with optional 2.5" Disk Holder) 2.5" SATA SSD (with optional 2.5" Disk Holder) |
3.5" SATA HDD 2.5" SATA HDD 2.5" SATA SSD |
|
Maximum Single Volume Size* |
108 TB |
108 TB |
108 TB |
|
Hot Swappable Drive |
- |
- |
- |
|
RJ-45 1GbE LAN Port |
1 |
1 |
1 |
|
USB 2.0 Port |
2 |
2 |
2 |
|
Size (Height x Width x Depth) |
166 mm x 71 mm x 224 mm |
165 mm x 100 mm x 225.5 mm |
184 mm x 168 mm x 230 mm |
|
Weight |
0.7 kg |
0.88 kg |
2.21 kg |
| CPU | |
|---|---|
| Model | Realtek RTD1296 |
| Architecture / Cores / Frequency | 64-bit / 4-core / 1.4 GHz |
| Encryption Engine | Yes |
| Memory | |
| System Memory | 1 GB DDR4 non-ECC |
| Note | Modules may be replaced with same/higher frequency based on availability. |
| Storage | |
| Drive Bays | 4 |
| Drive Compatibility | 3.5" SATA HDD, 2.5" SATA HDD, 2.5" SATA SSD |
| Max Volume Size | 108 TB |
| Hot Swappable Drive | No |
| External Ports | |
| LAN | 1 x RJ-45 1GbE |
| USB | 2 x USB 3.2 Gen 1 (USB 3.0) |
| File System | |
| Internal Drives | EXT4 |
| External Drives | EXT4, EXT3, FAT, NTFS, HFS+, exFAT |
| Physical | |
| Dimensions (HxWxD) | 184 mm x 168 mm x 230 mm |
| Weight | 2.21 kg |
| Cooling & Noise | |
| System Fans | 2 x 80 mm |
| Fan Modes | Full-Speed, Cool, Quiet, Low-power |
| Noise Level | 20.6 dB(A) |
| Power | |
| Power Supply | 90W AC Adapter |
| Input Voltage | 100V – 240V AC |
| Frequency | 50/60 Hz, Single Phase |
| Power Consumption | 21.71 W (Access) / 7.88 W (HDD Hibernation) |
| Thermal Output | 74.08 BTU/hr (Access) / 26.89 BTU/hr (HDD Hibernation) |
| Environment & Control | |
| Operating Temp | 0°C to 40°C (32°F to 104°F) |
| Storage Temp | -20°C to 60°C (-5°F to 140°F) |
| Humidity | 5% to 95% RH |
| Management Features | |
| LED Brightness Adjustment | Yes |
| Power Recovery | Yes |
| Scheduled Power On/Off | Yes |
| Wake on LAN/WAN | Yes |
| Certifications | |
| Compliance | EAC, CCC, FCC, CE, BSMI, VCCI, RCM |
| Warranty & Notes | |
| Warranty | 2 Years |
| Warranty Notes | Starts from the purchase date as per receipt. |
| Packaging Content | |
| Included Items | Main Unit, Accessory Pack, AC Adapter, Power Cord, RJ-45 Cable, Quick Start Guide |
| Optional Accessories | |
| Options | VisualStation (VS960HD / VS360HD), Surveillance Device License Pack |
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