Also the limited RAM and processor allow only for software-based media transcoding at 720p. So factor this into the total cost of ownership. Only 2 free IP camera channels are included though, and extra channels cost around $50 each. Linux doesn’t need as much RAM as Windows and so 512MB RAM is good enough for recording up to 12 IP cameras at 1080p and 10fps using the built-in Surveillance Station app. While the 512MB RAM may not sound like much, bear in mind that these NAS boxes are basically extremely energy efficient Linux PCs. But one big upgrade is the new quad-core processor, which improves performance substantially. This NAS looks very similar to its predecessor, the DS218j. The DS220j can serve as your file server, stream media across the home, automatically backup your devices, set up your own private cloud for file-sharing and monitor your IP cameras as well. The Synology X20j series is the starter option in its NAS family and range from 1-bay to 4-bay models. Synology is well-known for its high-quality hardware and very intuitive OS called DSM. Drive bays not slot-loading, no front USB port.No HDMI, Software-based transcoding only.With Linux and ZFS, QuTS hero supports advanced data reduction technologies for further driving down costs and increasing reliablility of SSD (all-flash) storage. QuTS hero is the operating system for high-end and enterprise QNAP NAS models. WIth Linux and ext4, QTS enables reliable storage for everyone with versatile value-added features and apps, such as snapshots, Plex media servers, and easy access of your personal cloud. QTS is the operating system for entry- and mid-level QNAP NAS.

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