Affordable Data Management Solution for your Home 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 Synology’s 2-year limited warranty. 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. 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. 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 de-duplication. 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. Available Anytime and Anywhere Synology provides mobile applications for you to enjoy your multimedia library anytime and anywhere. Available on iOS and Android™ platforms DS photo DS audio DS video and DS file allow access to your Synology NAS respectively through Photo Station Audio Station Video Station and File Station. QuickConnect allows connection to your Synology NAS via a secure and customizable address so that you can instantly access media and work files on any Windows Mac Linux computers and mobile devices..