30% of QNAP users choose RAID 5 arrays for their NAS to provide higher data protection, better system performance & optimized storage utilization. The 3-bay TS-351 not only means that you can build a RAID 5 array on your NAS with the fewest disks, but also features M.2 SSD slots & efficient auto-tiered storage that realizes optimal system performance. The TS-351 is also a home entertainment portal for streaming & sharing photos, music, & videos throughout your home & beyond. Featuring a minimalist design, the TS-351 can easily fit your home space as a brilliant digital hub! Features Build a secure RAID 5 array with three disks for optimized storage capacity & protection against one disk failing. H.264 hardware decoding & real-time transcoding; Full HD 1080p HDMI output for direct multimedia playback. Install SSDs for cache acceleration with the built-in M.2 PCIe (Gen 2 x 1, up to 500 MB/s) NVMe SSD slots. Effortlessly centralize, organize, browse, & share your multimedia files. Qtier technology & SSD caching enable 24/7-optimized storage efficiency. Snapshots fully record system status & data, allowing you to protect files & data from accidental deletion & malware attacks.