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!

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

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

Install SSDs for cache acceleration with the built-in M.2 PCIe (Gen2 x1, 5Gb/s) NVMe SSD slots.

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

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

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

Available Models

Dual-core high performance

The TS-351 is designed for home and small offices, allowing you to effortlessly manage files and enjoy multimedia entertainment while also providing reliable data protection. It uses an Intel® Celeron® J1800 dual-core 2.41 GHz processor (burst up to 2.58 GHz) and 2GB/4GB DDR3L memory (upgradable to 8GB), provides 3.5-inch SATA 3Gb/s and 6Gb/s drive bays, and supports AES 256-bit encryption for both full NAS volumes and shared folders, ensuring system performance while protecting the confidentiality of sensitive business data stored in the NAS.

Tested in QNAP Labs. Figures may vary by environment.

Test environment:
NAS: TS-351
OS: QTS 4.3.4
Volume type: RAID 5; 3 x ST1000NM0033-9ZM173 SN03
Client PC: Windows 10, Intel® Core™ i7-6700 3.40GHz, 64GB RAM

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, 5Gb/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.

Note:
1. The 3rd drive bay of the TS-351 supports SSD caching. You can purchase 2.5-inch HDD/SSD drive tray bases from the QNAP Online Shop.
2. M.2 SSDs are sold separately. As M.2 SSD operations can easily generate excessive heat, it is recommended to install a heatsink on M.2 SSDs.

» Learn More: SSD cache,Qtier

Snapshots protect your data against ransomware

Snapshots help protect your data by fully recording the NAS system state and metadata. Use Storage & Snapshots Manager or File Station to easily manage snapshots and quickly restore the system to a normal state if an error occurs. QNAP snapshots are block-based and only record the changed data. Not only does this save storage space but also reduces the time required to back up and restore data. The TS-351 with 4GB RAM can support up to 256 snapshots per NAS and 256 snapshots per volume/LUN.

» Learn More: Volume & LUN snapshots,Mitigate the threat of ransomware

Have fun with your NAS!

The TS-351 transforms how to enjoy your photos, music and videos throughout your home and beyond. It also supports 360-degree panorama photos and videos!
» Learn more: All-in-one multimedia center

Take photos anytime, anywhere and manage them with Photo Station. Organize photos by folders or albums, and view them in several modes.

With powerful smart playlists, comprehensive search functions and a user-friendly interface, Music Station is more than just music to your ears.

Video Station's smart collection, advanced search, and easy sharing functions make it so easy to enjoy your videos. Spoiler alert: you can even import video information from multiple online databases!

Enjoy a streamlined multimedia experience on any device

Whether accessing your media files on a computer or mobile device, you can enjoy a smooth playback experience. You can also connect the TS-351 directly to your TV or monitor via HDMI!

 

Tips for a more productive work day

The TS-351 provides the smartest NAS solution for professionally managing files by integrating rich apps for storing, synchronizing, searching, and archiving files. You can easily access files on various devices (including USB storage and mobile phones), instantly synchronize files with friends' and/or colleagues' devices, quickly find specific files, and automatically organize your documents and media files. The TS-351 helps save your time for a more productive and efficient life.

» Learn More: Total solution for file management,Cross-platform file sharing

Well-round, multi-point backup

QNAP's Hybrid Backup Sync app centralizes backup, restoration and synchronization tasks for you to easily transfer the data stored in your TS-351 to remote servers, USB storage (via One-touch copy function), cloud storage, or another QNAP NAS. With Qsync, you can also access your NAS files from PCs, laptops or mobile devices connected with the TS-351 at any time. Backing up Windows® or Mac® data to the TS-351 is also effortless by using QNAP’s NetBak Replicator utility or Apple’s Time Machine®.

» Learn More: Hybrid Backup Sync,Qsync

QNAP’s new QVR Pro surveillance solution allows you to arrange a dedicated, independent storage space for surveillance data on the TS-351 and leverage the advantages of storage manageability from QTS. With QVR Pro, camera management, storage space allocation, camera live view and playback is greatly simplified. You can also use the QVR Pro Client mobile app to monitor your cameras from anywhere, or use USB webcams as ONVIF network cameras with the QUSBCam2 app.

» Learn More: QVR Pro

Note: Use only QNAP memory modules to maintain system performance and stability. For NAS devices with more than one memory slot, use QNAP modules with identical specifications. Warning: Using unsupported modules may degrade performance, cause errors, or prevent the operating system from starting.
* Sound Level Test Environment: Refer to ISO 7779; Maximum HDD loaded; Bystander Position; Average data from 1 meter in front of operating NAS.
Designs and specifications are subject to change without notice.