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Compact 1U QuTS hero rackmount NAS

QNAP TS-h665U-8G 4+2-Bay DDR5 2.5GbE 1U QuTS hero NAS

The QNAP TS-h665U-8G combines four front SATA bays, two rear E1.S/M.2 NVMe slots, an Intel® four-core processor, 8GB DDR5 memory, dual 2.5GbE and PCIe expansion in a compact 1U chassis.

4 + 2 bays8GB DDR5Dual 2.5GbE1U rackmountQNAP manufacturer warranty
QNAP TS-h665U-8G 4+2-bay 1U rackmount NAS

What is the QNAP TS-h665U-8G?

It is a compact 1U business NAS with four 3.5-inch SATA bays and two rear E1.S/M.2 NVMe Gen 3 x1 slots. QuTS hero is preinstalled for ZFS-based data integrity and immutability features.

4 + 2 baysFour front SATA bays plus two rear E1.S/M.2 NVMe slots
8GB DDR5Expandable to 16GB using one 16GB SODIMM
Dual 2.5GbEPort Trunking and SMB Multichannel are supported
PCIe Gen 3 x2Expansion for compatible network, QM2, USB or storage cards
Feature group 1

Flexible SATA and NVMe storage

The compact chassis combines front-access SATA storage with rear NVMe options.

Four SATA bays

The front bays support compatible 3.5-inch SATA hard drives and 2.5-inch SATA solid state drives.

Two rear NVMe slots

The rear E1.S/M.2 slots support E1.S NVMe SSDs. M.2 NVMe SSD support requires the optional QDA-E1SM2 adapter.

SSD cache acceleration

Compatible NVMe storage can be configured for SSD caching to reduce latency and improve random read/write efficiency.

Feature group 2

DDR5 memory and hardware protection

The supplied configuration is designed for multitasking and encrypted storage access.

Installed memory

The NAS includes 8GB SODIMM DDR5 and supports up to 16GB using one 16GB module.

In-Band ECC statement

The supplied description states that the DDR5 non-ECC memory supports In-Band ECC to enhance data reliability.

AES-NI encryption

The Intel® AES-NI engine provides hardware-accelerated AES 256-bit encryption.

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Feature group 3

Networking and expansion

Built-in 2.5GbE can be combined or expanded for changing business requirements.

Dual 2.5GbE

Two 2.5GbE ports support Port Trunking for bandwidth and fault tolerance, or SMB Multichannel for accelerated transfers.

Optional 5GbE or 10GbE

Compatible network adapters can be installed through the PCIe Gen 3 x2 slot.

Additional expansion

The slot also supports compatible QM2, USB expansion and storage expansion cards.

Feature group 4

QuTS hero and deployment planning

ZFS-based storage features support protection and recovery.

Snapshots

Snapshots record system state and data so an earlier state can be restored after an unexpected incident.

QuTS hero

The supplied information states that QuTS hero is preinstalled with data-integrity and immutability features.

Long-term availability

The supplied product content states that this model is planned to remain available and supported through 2031.

Frequently asked questions

What is the QNAP TS-h665U-8G?

It is a compact 1U QuTS hero NAS with four front SATA bays, two rear E1.S/M.2 NVMe slots, 8GB DDR5 memory and dual 2.5GbE.

How many storage bays does it have?

It has four front 3.5-inch SATA bays and two rear E1.S/M.2 NVMe Gen 3 x1 slots.

Which drives are supported?

The front bays support compatible 3.5-inch SATA hard drives and 2.5-inch SATA SSDs. The rear slots support E1.S NVMe SSDs and, with the optional QDA-E1SM2 adapter, M.2 NVMe SSDs.

Which processor does the TS-h665U-8G use?

The supplied specifications identify an Intel® four-core 64-bit x86 processor but do not state its exact model.

How much memory is installed?

It includes 8GB SODIMM DDR5 memory and supports a maximum of 16GB using one 16GB module.

Does the supplied information mention In-Band ECC?

Yes. The supplied description states that the DDR5 non-ECC memory supports In-Band ECC to enhance data reliability.

What network ports are built in?

It includes two 2.5GbE ports supporting 2.5G, 1G, 100M and 10M speeds.

Can the network connectivity be upgraded?

Yes. Compatible 5GbE or 10GbE network adapters can be installed through the PCIe Gen 3 x2 expansion slot.

Can M.2 NVMe SSDs be installed directly?

M.2 NVMe SSD support requires the optional QDA-E1SM2 adapter in the rear E1.S/M.2 slots.

What expansion slot is included?

The NAS includes one PCIe Gen 3 x2 slot for compatible network, QM2, USB expansion or storage expansion cards.

Which operating system is preinstalled?

The supplied information states that QuTS hero is preinstalled.

What warranty applies to the TS-h665U-8G?

The supplied specifications list a three-year QNAP manufacturer warranty. Coverage is subject to QNAP’s applicable warranty terms.

(TS-h665U-8G)

Features and highlights

Key product details organised from the supplied QNAP information for TS-h665U-8G.

Compact 1U design

Four front SATA bays and two rear E1.S/M.2 slots are integrated into a 1U rackmount chassis.

Intel® four-core processor

The supplied specification identifies a 64-bit x86 Intel® four-core processor.

8GB DDR5 memory

Installed memory can be expanded to 16GB using one 16GB SODIMM.

Dual 2.5GbE networking

Port Trunking and SMB Multichannel are supported.

PCIe expansion

A PCIe Gen 3 x2 slot supports compatible networking and storage-expansion cards.

QuTS hero preinstalled

ZFS-based integrity, immutability and snapshot capabilities are included in the supplied feature set.

Purchase check: M.2 NVMe SSD support in the rear slots requires the optional QDA-E1SM2 adapter. Confirm compatible drives, adapters and expansion cards before ordering.

Technical specifications

The following specifications are organised from the supplied product information for QNAP TS-h665U-8G.

Product details

BrandQNAP
Model / SKUTS-h665U-8G
Product type4+2-bay 1U rackmount NAS

Processor and Memory

CPUIntel 4-core processor
CPU Architecture64-bit x86
Encryption EngineYes (AES-NI)
Hardware-Accelerated TranscodingYes
System Memory8GB SODIMM DDR5
Maximum Memory16GB (1 x 16GB)
Memory Slot1 x SODIMM DDR5

Storage

Drive BaysFront: 4 x 3.5-inch
Rear: 2 x E1.S/M.2 NVMe Gen 3 x1 slots
Drive Compatibility3.5-inch bays:
3.5-inch SATA hard disk drives
2.5-inch SATA solid state drives
E1.S/M.2 slots:
E1.S NVMe SSD
M.2 NVMe SSD With the QDA-E1SM2 adapter (optional purchase), the slots support M.2 NVMe SSDs.
Hot-SwappableYes
M.2 SlotOptional via a PCIe adapter
SSD Cache Acceleration SupportYes

Networking

2.5 Gigabit Ethernet2 x 2.5GbE ports (2.5G/1G/100M/10M)
5 Gigabit EthernetOptional via network adaptor
10 Gigabit EthernetOptional via network adaptor or PCIe expansion card
Wake on LANYes
Jumbo FrameYes

Expansion and Connectivity

PCIe Slot1 x PCIe Gen 3 x2
Slot 1: PCIe Gen 3 x2
USB 2.0 Ports3
USB 3.2 Gen 2 Port1 x Type-A USB 3.2 Gen 2 (10Gbps)

Physical Specifications

Form Factor1U rackmount
LED IndicatorsHDD 1–4, E1.S/M.2 1–2, Status, LAN, Expansion, Power
ButtonsPower, Reset

Power and System Alerts

Power Supply Unit250W, 100–240V
System WarningBuzzer

Operating Environment

Operating Temperature0–40°C (32–104°F)
Storage Temperature-20–70°C (-4–158°F)
Relative Humidity5–95% RH non-condensing, wet bulb: 27°C (80.6°F)

Warranty and Connections

Standard Warranty3 years
Maximum Concurrent CIFS Connections1500 with maximum memory installed
SKU TS-h665U-8G
Model # TS-h1077AFU
Brand QNAP
Shipping Weight 13.4700kg
Three yearsQNAP manufacturer warranty

3-year QNAP manufacturer warranty

The supplied specifications list a 3-year manufacturer warranty for QNAP TS-h665U-8G.

Warranty coverage, eligibility and claim assessment are subject to QNAP’s applicable warranty terms. Please retain your DeviceDeal tax invoice as proof of purchase.

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QNAP TS-h665U-8G 4+2 Bay Intel 4-core processor, Compact 1U rackmount NAS

Model # TS-h665U-8G

  • SKU: TS-h665U-8G

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