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 collectionsSmartly 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.