Build a private cloud for your home DS420j is a 4-bay desktop NAS designed for home data backup, file syncing, and sharing. Supporting up to 64 TB raw capacity, you can easily centralize all your multimedia collections.
Manage your photo collections Smartly organize your photos with Synology Moments, a modern, AI-enabled photo management application that allows you to preserve your precious memories effortlessly.
Stream content to your TV Turn your Synology NAS into a home media hub and stream your digital contents to your favorite devices such as computers, mobile devices, Samsung TV, Apple TV, Google Chromecast, and DLNA devices.
Seamless integration with your mobile devices Synology mobile applications are designed to allow quick and secure access to your data wherever you are.
Cross-platform file syncing and sharing Synology Drive allows you to sync files across Windows, macOS, Linux, and mobile devices, keeping everything up-to-date.
- Sync files on demand: Save the storage space and network bandwidth of your PC. - Go back in time: Easily retrieve previous versions of your shared files. - Back up your data: Protect your files as scheduled or in real-time.
Reliable and efficient backup options Synology Hyper Backup is a reliable and multi-directional backup solution offering data deduplication and compression. You can back up from various source folders, including external USB drives, another Synology NAS, rsync servers, or from public cloud services like Google Drive or Synology C2, and protect your data against malicious attacks and encryption-based ransomware threats. More information: Performance | Type | NAS | ![](/p.gif) | Device class | Home & Home Office | ![](/p.gif) | Backup function | Yes | ![](/p.gif) | Backup features | Cloud, iSCSI LUN | ![](/p.gif) | Multilingual support | Yes | ![](/p.gif) | Number of users | 1024 user(s) | ![](/p.gif) | Noise level | 20.6 dB | ![](/p.gif) | Management protocols | CIFS/AFP/NFS/FTP/WebDAV | ![](/p.gif) | Web-based management | Yes | ![](/p.gif) | Access Control List (ACL) | Yes | ![](/p.gif) | Reset button | Yes | ![](/p.gif) | On/off switch | Yes | ![](/p.gif) | Built-in FTP server | Yes | ![](/p.gif) | Browser supported | Chrome, Firefox, Edge, Internet Explorer 10+, Safari 10+ | ![](/p.gif) | System log | Yes | Design | Chassis type | Compact | ![](/p.gif) | Cooling type | Active | ![](/p.gif) | Product colour | Black | ![](/p.gif) | Number of fans | 2 fan(s) | ![](/p.gif) | Fan diameter | 80 mm | ![](/p.gif) | Fan diameter 2 | 80 mm | ![](/p.gif) | LED indicators | HDD, LAN, Power, Status | ![](/p.gif) | Cable lock slot | Yes | ![](/p.gif) | Cable lock slot type | Kensington | Processor | Processor family | Realtek | ![](/p.gif) | Processor manufacturer | Realtek | ![](/p.gif) | Processor model | RTD1296 | ![](/p.gif) | Processor frequency | 1.4 GHz | ![](/p.gif) | Processor cores | 4 | ![](/p.gif) | Processor operating modes | 64-bit | Other features | Compliance certificates | RoHS | ![](/p.gif) | Certification | FCC CE EAC BSMI VCCI CCC RCM | Software | Operating system installed | DiskStation Manager | ![](/p.gif) | Windows operating systems supported | Windows 10, Windows 7, Windows 8, Windows 8.1 | ![](/p.gif) | Mac operating systems supported | Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.13 High Sierra, Mac OS X 10.14 Mojave | Memory | Internal memory | 1 GB | ![](/p.gif) | Internal memory type | DDR4 | Power | Power supply location | External | ![](/p.gif) | Power supply unit (PSU) capacity | 90 W | ![](/p.gif) | Number of power supply units | 1 | ![](/p.gif) | Power consumption (typical) | 21.71 W | ![](/p.gif) | Power consumption (HDD standby) | 7.88 W | ![](/p.gif) | AC input voltage | 100 - 240 V | ![](/p.gif) | AC input frequency | 50 - 60 Hz | Network | Ethernet LAN | Yes | ![](/p.gif) | Ethernet LAN data rates | 1000 Mbit/s | ![](/p.gif) | iSCSI support | Yes | ![](/p.gif) | Wake-on-LAN ready | Yes | ![](/p.gif) | Supported network protocols | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV | Weight & dimensions | Width | 168 mm | ![](/p.gif) | Depth | 230 mm | ![](/p.gif) | Height | 184 mm | ![](/p.gif) | Weight | 2210 g | Logistics data | Harmonized System (HS) code | 84714100 | Ports & interfaces | Ethernet LAN (RJ-45) ports | 1 | ![](/p.gif) | USB port | Yes | ![](/p.gif) | USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 | Storage | Number of storage drives supported | 4 | ![](/p.gif) | Supported storage drive types | HDD & SSD | ![](/p.gif) | RAID support | Yes | ![](/p.gif) | Supported storage drive interfaces | Serial ATA, Serial ATA II, Serial ATA III | ![](/p.gif) | Storage drive sizes supported | 2.5,3.5 " | ![](/p.gif) | Maximum supported storage capacity | 64 TB | ![](/p.gif) | RAID levels | 0, 1, 5, 6, 10, JBOD | ![](/p.gif) | Supported file systems | Fat, HFS+, NTFS, ext3, ext4 | Operational conditions | Operating temperature (T-T) | 0 - 40 °C | ![](/p.gif) | Operating relative humidity (H-H) | 5 - 95 % | ![](/p.gif) | Storage temperature (T-T) | -20 - 60 °C | ![](/p.gif) | Storage relative humidity (H-H) | 5 - 95 % | ![](/p.gif) | Operating altitude | 0 - 5000 m | Packaging content | External power adapter | Yes | ![](/p.gif) | Cables included | AC, LAN (RJ-45) | ![](/p.gif) | Quick installation guide | Yes |
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