Qnap TS-351-4G, 3Bay NAS - Intel Celeron J1800 2-core/2 CPU, 4 GB DDR3 Memory, 3 x 3.5-inch SATA 6Gb/s, 3Gb/s, 2 PCIe Slot, USB 3.2 Gen 1 Port, 65W PSU

30% of QNAP users choose RAID 5 arrays for their NAS to provide higher data protection, better system performance and optimized storage utilization. The 3-bay TS-351 not only allows you to build a RAID 5 array on your NAS with the fewest disks, but also features M.2 SSD slots and efficient auto-tiered storage that realizes optimal system performance. The TS-351 is also a home entertainment portal for streaming and sharing photos, music, and videos throughout your home and beyond. Featuring a minimalist design, the TS-351 can easily fit your home space as a brilliant digital hub!

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Build a secure RAID 5 array with three disks for optimized storage capacity and protection against one disk failing.

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H.264 hardware decoding and real-time transcoding; Full HD 1080p HDMI™ output for direct multimedia playback.

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Install SSDs for cache acceleration with the built-in M.2 PCIe (Gen2 x1, up to 500 MB/s) NVMe SSD slots.

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Effortlessly centralize, organize, browse, and share your multimedia files.

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Qtier™ technology and SSD caching enable 24/7-optimized storage efficiency.

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Snapshots fully record system status and data, allowing you to protect files and data from accidental deletion and malware attacks.

Elegant appearance, effective airflow

The TS-351 sports a stylish and elegant look with an industrial design concept to provide effective airflow and better cooling, ensuring smooth performance even under the heaviest loads. The tool-less 3.5-inch hard drive installation allows easier system setup and maintenance, while the front-panel LEDs assist in viewing system status.

M.2 SSDs for cache acceleration or efficient tiered storage

The TS-351 supports SSD caching, and features two M.2 slots that support M.2 PCIe (Gen2 x1, up to 500 MB/s) NVMe SSDs with 2280 form factors (sold separately) for boosting the overall workflow of intensive, IOPS-demanding applications. Moreover, Qtier™ technology empowers the TS-351 with auto tiering that helps continuously optimize storage efficiency across M.2 SSDs, a 2.5-inch SATA SSD, and high-capacity HDDs with around-the-clock acceleration. The new Qtier™ 2.0 features IO-awareness that empowers SSD-tiered storage with a cache-like reserved space to handle burst I/O in real time, greatly maximizing the advantages of SSD.

Enjoy optimized SSD performance with extra over-provisioning

With SSD prices continuing to become more affordable for home and small business users, there's never been a better time for using SSDs in your NAS to enjoy higher performance, faster file backups, smoother multimedia experiences, and optimized virtualization applications. The latest QTS 4.3.5 takes SSD functionality even further by supporting software-defined SSD RAID extra over-provisioning (OP) that enables you to allocate additional OP space from 1% to 60%, beneficial for optimal SSD random write speeds and extended lifespan with higher endurance. Now you can use affordable consumer SSDs for the TS-351, adjust the SSD OP, and potentially attain performance and endurance levels similar to enterprise-grade SSDs.