QNAP TS-H665U-RP 1U Rackmount NAS Server - Intel Atom C5125 8-Core, 8GB DDR4 ECC, 6x SATA 6Gb/s + 2x 2.5 inch SATA, 2x 2.5GbE, Dual Redundant PSU

Small offices and remote sites often struggle with data storage that is both compact and reliable, forcing compromises between performance, redundancy, and rack space. The QNAP TS-H665U-RP solves this by delivering a 1U rackmount NAS with dual redundant power supplies, ZFS-based data integrity, and high-speed 2.5GbE connectivity, all powered by an efficient Intel Atom C5125 8-core processor. It is engineered for businesses that need enterprise-grade features without the complexity or cost of traditional SAN solutions.

Who is it for

This NAS is ideal for SMBs, branch offices, and IT administrators who require a space-saving 1U rackmount storage server with high availability. It suits environments running virtualization, backup, file sharing, and surveillance workloads, where data protection and uptime are critical. The dual power supplies and ECC memory make it a dependable choice for mission-critical applications.

Main features

• 1U rackmount form factor with dual redundant 250W power supplies for maximum uptime
• Intel Atom C5125 8-core/8-thread processor at 2.8 GHz for efficient multitasking
• 8 GB DDR4 ECC UDIMM memory (expandable to 128 GB) to safeguard against data corruption
• 6 hot-swappable 3.5-inch SATA 6Gb/s drive bays plus 2 internal 2.5-inch SATA bays for SSDs or caching
• 2 M.2 2280 PCIe Gen3 x4 slots for NVMe SSD caching or storage pools
• Dual 2.5 Gigabit Ethernet ports for high-speed network connectivity with SMB Multichannel support
• PCIe Gen3 x8 expansion slot (pre-installed with 2.5GbE card) for additional network or storage expansion
• QuTS hero operating system with ZFS data integrity, inline deduplication, and snapshots

Specifications

• Processor: Intel Atom C5125 8-core/8-thread, 2.8 GHz
• Memory: 8 GB DDR4 ECC UDIMM (expandable to 128 GB)
• Flash Memory: 5 GB (dual boot OS protection)
• Drive Bays: 6 x 3.5-inch SATA 6Gb/s + 2 x 2.5-inch SATA 6Gb/s
• M.2 SSD Slots: 2 x M.2 2280 PCIe Gen3 x4
• Ethernet Ports: 2 x 2.5 Gigabit Ethernet (2.5GBASE-T)
• PCIe Expansion Slot: 1 x PCIe Gen3 x8 (pre-installed with 2.5GbE card)
• USB Ports: 2 x USB 3.2 Gen 1 (5Gbps)
• Form Factor: 1U Rackmount
• Power Supply: Dual redundant 250W
• Hot-swappable Drives: Yes
• RAID Support: ZFS RAID-Z, RAID-Z2, RAID-Z3, Triple Parity, Triple Mirror, RAID 0, 1, 5, 6, 10, 50, 60, JBOD
• Encryption Engine: AES-NI
• File System (Internal): ZFS
• File System (External): EXT4, NTFS, FAT32, HFS+
• Management Interface: Web-based GUI

Tips

To maximize performance, populate the M.2 slots with NVMe SSDs for caching or a dedicated storage pool. For high availability, configure the dual power supplies to separate power sources. Use the PCIe slot to add a 10GbE network card for faster data transfer.