Synology DS420j 4 Bay Desktop NAS DS420j is a 4-bay desktop NAS designed for home users data backup and file sharing. It supports various networking protocols, multiple RAID configurations and diverse add-on packages, effortlessly enabling cross-platform file synchronization and sharing on a private cloud. DS420j is backed by Synologys 2-year limited warranty.2  Highlights 4-bay home NAS with over 60 TB raw capacity support, suitable for data backup and file sharing 64-bit 4-core 1.4 GHz processor and 1 GB DDR4 memory Over 112 MB/s encrypted sequential reading and writing throughput1 Easy-to-deploy surveillance solution that supports up to 16 IP cameras Energy-saving design with only 7.88 W consumed in hibernation mode Backed by Synology 2-year limited warranty2 Reliable 4-Bay Home NAS for Data Backup Equipped with a 64-bit 4-core 1.4 GHz processor and 1 GB DDR4 memory, DS420j delivers encrypted sequential throughput at over 112 MB/s in reading and writing.1 It supports up to 64 TB raw capacity with 4 drive trays. Powered by Synology DiskStation Manager (DSM), DS420j offers various applications to optimize data backup and file sharing for home use, and is highly reliable to store and centralize your media files. Intelligent Photo Library Centralize your photos and videos in one private, organized place with Synology Moments and enjoy a modern browsing experience with image recognition techniques. Safely store your memorable moments on DS420j Group photos by topics based on deep learning algorithm Effortlessly find desired photos and share with friends and family Optimized browsing experience with super resolution Back up photos and free up storage space of mobile devices Effective Sync and Backup Solution DS420j can serve as a centralized backup destination, making it easy to create your own private cloud. Synology Cloud Sync keeps your Dropbox, Google Drive, Microsoft OneDrive, Baidu, and Box storage accounts in sync with DS420j at home. Synology Drive allows you to sync files across Windows, macOS, Linux, and mobile devices, effortlessly keeping everything up-to-date. Synology Hyper Backup provides multi-version backup with block-level incremental backup and cross-version deduplication. It has optimized storage utilization and allows data backup to multiple destinations, including local shared folders, external hard drives, network shared folders, rsync servers, and public cloud services. 24/7 Security Solution Featuring user-friendly video management tools and an intuitive desktop-like interface, Synology Surveillance Station is a reliable private-security solution that can support multiple IP cameras connected to DS420j. Surveillance Station features optimized live view together with streamlined real-time monitoring. Its powerful analytics, such as motion detection and alert notification, allows you to stay informed of any suspicious activity with triggers sent via SMS, e-mail, and DS cam on mobile devices. Energy Efficient with Green Design DS420j is designed with energy efficiency in mind. Compared with its average PC counterpart, DS420j consumes relatively little power at 21.71 watts while accessing and 7.88 watts when hard drive hibernation is enabled. The power scheduling feature further reduces power consumption and operating costs. Performance figures may vary depending on the environment, usage, and configuration. The warranty period starts from the purchase date as stated on your purchase receipt. exFAT Access is sold separately in Package Center. Technical Specification Synology DS420j 4 Bay Desktop NAS Processor / Memory RAM    1 GB DDR4 Processors Installed    1 x Realtek Semiconductor RTD1296 1.4 GHz Number of Cores    Quad-Core Max Supported Qty    1 General Device Type    NAS server Host Connectivity    Gigabit Ethernet Total Storage Capacity    0 GB Installed Devices / Modules Qty    0 (installed) / 4 (max) Width    16.8 cm Depth    23 cm Height    18.4 cm Weight    2.21 kg Storage Controller Type    RAID RAID Level    RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, JBOD Networking Data Link Protocol    10Mb LAN, 100Mb LAN, GigE Network / Transport Protocol    PPTP, L2TP, IPSec, SMTP, POP3, IMAP Remote Management Protocol    SNMP, Telnet, HTTPS, SSH Network Services Compatibility    Microsoft Active Directory (AD), Microsoft CIFS, Network File System (NFS), FTP, Server Message Block (SMB), Apple File Protocol (AFP), Web-based Distributed Authoring and Versioning (WebDAV), Calendaring Extensions to WebDAV (CalDAV) Features    Firewall protection, hardware encryption, LDAP support, wake on LAN (WOL), download client, Access Control List (ACL) support, SSH support, iTunes server, Samba support, FTP server, reset button, bandwidth control, surveillance station, Energy Efficient Ethernet, WebDAV server, 4K resolution support, cloud backup, VPN Server, security lock slot (cable lock sold separately), 2 fans, Dropbox support, automated backup scheduling, Wi-Fi USB dongle support, Link Aggregation, Google Drive support, failover protection, Amazon Cloud Drive support, Yandex Disk support, Microsoft OneDrive support, OpenStack compatible, Full HD (1920 x 1080) streaming video support, file station, hubiC support, OpenStack Swift-compatible, WebDAV server support, Baidu cloud support Compliant Standards    DLNA CERTIFIED, UPnP Security DVR Compression Format    MPEG-4, MPEG-2, H.265, HEVC, VC-1 Image Resolution    1280x720, 1920x1080, 2048x1536, 2591x1944, 3840x2160, 4096x2160 Expansion / Connectivity Expansion Bays    4 (total) / 4 (free) x internal - 2.5\" / 3.5\" Interfaces    2 x USB 3.0 ¦ 1 x Ethernet 1000Base-T - RJ-45 Miscellaneous Cables Included    1 x network cable Features    Security lock slot (cable lock sold separately) Security Slot Type    Kensington security slot Compliant Standards    FCC Class B certified, RoHS, BSMI Class B Included Accessories    Accessory pack Power Power Device    External power adapter Voltage Required    AC 120/230 V (50/60 Hz) Power Consumption Operational    21.71 Watt Power Provided    90 Watt Manufacturer Warranty Service & Support    Limited warranty - 2 years Environmental Parameters Min Operating Temperature    0 °C Max Operating Temperature    40 °C Humidity Range Operating    5 - 95 (non-condensing)