Sixteen-Bay Hybrid Business NAS
QNAP TS-1655-8G Hybrid Storage NAS
A tower NAS with twelve 3.5-inch bays, four 2.5-inch bays, an Intel Atom C5125 eight-core processor, 8GB DDR4 memory, dual 2.5GbE, two M.2 NVMe slots and three PCIe slots.
High-capacity hybrid storage for varied business workloads
The QNAP TS-1655-8G balances twelve 3.5-inch HDD bays with four 2.5-inch SSD bays for shared files, backup and recovery, virtualisation and intensive data transfers. M.2 NVMe slots, dual 2.5GbE and three PCIe slots provide several paths for cache, network and I/O expansion.
Key features and benefits
Twelve HDD and four SSD bays
The hybrid layout separates high-capacity 3.5-inch storage from four dedicated 2.5-inch SSD bays.
Intel eight-core processor
The Intel Atom C5125 eight-core 2.8GHz processor supports the stated business workloads.
Dual M.2 NVMe slots
Two M.2 2280 PCIe Gen3 x2 slots support the listed SSD cache and storage-pool options.
Three PCIe slots
Three PCIe Gen3 x4 slots support the stated network, Fibre Channel and QM2 expansion options.
Dual 2.5GbE
Two built-in 2.5GbE ports support high-speed compatible networks.
Long-term model positioning
The product is positioned for availability and support through 2030.
Who is this model best for?
A strong choice for
- High-capacity business file storage
- Hybrid HDD and SSD deployments
- Backup and disaster recovery
- Virtual-machine and container workloads
- Multi-site deployments needing matching models
Consider another model if you need
- You need redundant power supplies
- You need built-in 10GbE or 25GbE
- You need a compact desktop NAS
Key specifications
- Processor
- Intel Atom C5125, 8-core, 2.8GHz
- Memory
- 8GB non-ECC UDIMM DDR4 (1 × 8GB)
- Maximum memory
- 128GB (4 × 32GB)
- Drive bays
- 12 × 3.5-inch + 4 × 2.5-inch SATA
- Drive compatibility
- 3.5-inch SATA HDD and 2.5-inch SATA SSD
- M.2 slots
- 2 × M.2 2280 PCIe Gen3 x2
- Networking
- 2 × 2.5GbE
- PCIe slots
- 3 × PCIe Gen3 x4
- USB
- 4 × USB 3.2 Gen1
- Dimensions
- 294.29 × 369.89 × 319.8 mm
Full technical specifications
Processor, memory and storage
| CPU | Intel® Atom® C5125 8-core processor, 2.8GHz |
|---|---|
| CPU Architecture | 64-bit x86 |
| Floating Point Unit | Supported |
| Encryption Engine | Supported (AES-NI) |
| System Memory | 8 GB non-ECC UDIMM DDR4 (1 x 8 GB) |
| Maximum Memory | 128 GB (4 x 32 GB) |
| Memory Slot | 4 x U-DIMM DDR4 Support ECC memory |
| Flash Memory | 5GB (Dual boot OS protection) |
| Drive Bay | 12 x 3.5-inch + 4 x 2.5-inch SATA 6Gb/s, 3Gb/s |
| Drive Compatibility | 3.5-inch bays: 3.5-inch SATA hard disk drives 2.5-inch SATA solid state drives 2.5-inch bays: 2.5-inch SATA solid state drives |
| M.2 Slot | 2 x M.2 2280 PCIe Gen 3 x2 slots The M.2 SSD is not included as standard. M.2 SSD operations can easily generate excessive heat. It is recommended to install a heatsink on the M.2 SSD. |
| SSD Cache Acceleration Support | Supported |
| Max. Number of Concurrent Connections (CIFS) - with Max. Memory | 2500 |
Software and system features
| Hot-swappable | Supported The following are not hot-swappable: M.2 SSDs, SSD cache drives, SSDs using PCIe expansion slots. |
|---|---|
| SR-IOV | Supported |
| System Warning | Buzzer |
| Kensington Security Slot | Supported |
Network, ports and expansion
| 2.5 Gigabit Ethernet Port (2.5G/1G/100M) | 2 (2.5G/1G/100M/10M) |
|---|---|
| 5 Gigabit Ethernet Port (5G/2.5G/1G/100M) | Optional via PCIe expansion card |
| 10 Gigabit Ethernet Port | Optional via PCIe expansion card |
| 25 Gigabit Ethernet Port | Optional via PCIe expansion card |
| Wake on LAN (WOL) | Supported Only the 2.5GbE port |
| Jumbo Frame | Supported |
| PCIe Slot | 3 Slot 1: PCIe Gen 3 x4 Slot 2: PCIe Gen 3 x4 Slot 3: PCIe Gen 3 x4 Card dimensions for PCIe slot 1:260 x 111.15 x 37.52 mm / 10.25 x 4.38 x 1.48 inches. Card dimensions for PCIe slot 2:150 x 68.9 x 18.76 mm / 5.90 x 2.71 x 0.74 inches. Card dimensions for PCIe slot 3:150 x 68.9 x 18.76 mm / 5.90 x 2.71 x 0.74 inches. Wider cards can be installed if the next PCIe slot will not be used. |
| USB 3.2 Gen 1 port | 4 |
| Other Interfaces | Kensington security slot |
Physical, environmental and power
| Form Factor | Tower |
|---|---|
| LED Indicators | Power/Status, LAN, USB, HDD1-12, SSD 1-4, M.2 SSD 1-2 |
| Buttons | Power, Reset, USB Auto Copy |
| Dimensions (HxWxD) | 294.29 × 369.89 × 319.8 mm Dimensions do not include foot pad (foot pad may be up to 30mm / 1.18 inches high depending on model) |
| Weight (Net) | 14.24 kg |
| Weight (Gross) | 16.65 kg |
| Operating Temperature | 0 - 40 °C (32°F - 104°F) |
| Storage Temperature | -20 - 70°C (-4°F - 158°F) |
| Relative Humidity | 5-95% RH non-condensing, wet bulb: 27°C (80.6°F) |
| Power Supply Unit | 550W, 100-240V 1 x 8-pin PCI-e cable + 1 x 8 (6+2)-pin PCI-e cable |
| Power Consumption: HDD Sleep Mode | 68.004 W |
| Power Consumption: Operating Mode, Typical | 104.65 W Tested fully populated with 1TB hard drives and 120GB solid-state drives. |
| Fan | System fan: 3 x 92mm, 12VDC CPU fan: 2 x 97mm, 12VDC |
Frequently asked questions about the TS-1655-8G
What is the QNAP TS-1655-8G?
It is a tower NAS with twelve 3.5-inch bays, four 2.5-inch bays, dual 2.5GbE and three PCIe slots.
Which processor does the TS-1655-8G use?
It uses an Intel Atom C5125 eight-core 2.8GHz processor.
How much memory is included?
The TS-1655-8G includes 8GB non-ECC UDIMM DDR4 as one 8GB module.
What is the maximum memory?
The stated maximum is 128GB across four U-DIMM DDR4 slots.
How are the sixteen drive bays arranged?
It has twelve 3.5-inch SATA bays and four 2.5-inch SATA bays.
Which drives are listed as compatible?
The 3.5-inch bays list SATA hard drives and 2.5-inch SATA solid-state drives; the 2.5-inch bays list SATA solid-state drives.
Does the TS-1655-8G have M.2 slots?
Yes. It has two M.2 2280 PCIe Gen3 x2 slots.
Which network ports are built in?
It includes two 2.5GbE ports.
How many PCIe slots are provided?
It provides three PCIe Gen3 x4 slots.
How long is this model planned to remain available?
The product information states availability and support through 2030.
Important information
M.2 solid-state drives are not included as standard, and heatsinks are recommended for M.2 operation.
M.2 SSDs, SSD cache drives and SSDs installed through PCIe expansion are not hot-swappable.
The product is positioned for extended availability and support through 2030.
