Synology 4-Bay Intel Quad-Core NAS Review (2026): A Spec-Based Look

What stands out

• Intel quad-core processor with AES-NI hardware encryption engine for secure data handling
• Two built-in M.2 2280 NVMe SSD slots for cache acceleration without using drive bays
• 4 GB DDR4 memory that is expandable up to 8 GB for improved multitasking
• Average 15% performance boost to photo indexing and database response times

Who it fits

Key specs explained for DS920+

Intel quad-core processor

This CPU handles multiple tasks simultaneously, such as running virtual machines or managing heavy file transfers. It includes AES-NI hardware encryption, which speeds up secure data access without slowing down your system. You will notice faster response times when indexing photos or running databases compared to models with weaker processors.

4GB DDR4 RAM

This memory allows the NAS to keep active data readily available for quick access. It supports smoother performance during intensive operations like photo indexing and database queries. The RAM is expandable up to 8 GB, so you can upgrade later if your workload grows, ensuring the system remains responsive over time.

4-Bay

This configuration provides four slots for installing hard drives or SSDs. It offers a balance between storage capacity and physical footprint. You can mix drive sizes to maximize space. If you need more capacity, you can expand the system by connecting a Synology DX517 expansion unit, which scales the setup up to nine drives total.

Diskless

The unit does not include internal storage drives. You must purchase hard drives separately to store your data. This gives you the freedom to choose specific drive models and capacities that fit your budget and performance needs, rather than being locked into pre-installed options that may not suit your specific requirements.

Physical Dimensions and Build

The listing describes the Synology DS920+ as a compact unit measuring 7.83 inches in width, 6.54 inches in height, and 8.78 inches in length. It weighs 4.94 pounds. The casing is finished in black. These dimensions allow it to fit into tight spaces, such as under a desk or on a small shelf, without dominating your workspace. The modest weight suggests a standard plastic and metal chassis, which is typical for this class of network-attached storage.

According to the listing, the device features a diskless design with four drive bays. This layout lets you choose your own storage capacity and drive types. The unit also includes two built-in M.2 2280 NVMe SSD slots. These slots are distinct from the main drive bays, allowing you to add cache acceleration without reducing your available storage space for files. This separation is a practical design choice for users who need faster read and write speeds for specific tasks.

The front panel includes status indicators and USB ports, though the listing does not detail every button. The overall form factor is utilitarian, focusing on function over flashy aesthetics. You can scale the system up to nine drives by connecting it to a Synology DX517 expansion unit. This modular approach means the physical footprint remains small initially, but you can expand your storage later without replacing the main unit. The design prioritizes efficient use of space and future-proofing.

Setup and everyday use

Setting up the Synology DS920+ begins with installing your own storage drives, as the unit ships diskless. You will need to purchase four hard drives separately to populate the bays. Once the drives are in place, you connect the device to your network and power source. The system uses Synology’s DiskStation Manager operating system, which guides you through initial configuration via a web browser on your computer or mobile device.

Daily use relies on the Intel quad-core processor and 4 GB of DDR4 RAM. The processor includes an AES-NI hardware encryption engine. This means secure data transfers and file encryption happen efficiently without significantly impacting speed. You can expect over 225 MB/s sequential read and write throughput for standard file operations. The RAM supports scalable performance, allowing you to expand it to 8 GB later if needed.

The device includes two built-in M.2 2280 NVMe SSD slots. These allow you to add cache acceleration without using your main storage bays. This setup helps improve performance for photo indexing and database tasks. By default, the NAS comes with two camera licenses. You can add more by purchasing additional licenses if you plan to integrate more surveillance cameras into your system. The compact design fits easily into home offices or small server racks.

Before You Buy This NAS

You must purchase four hard drives separately, as the DS920+ ships diskless. This adds to your initial setup effort and budget. The unit includes two camera licenses by default. If you plan to use more than two security cameras, you will need to buy additional licenses from Synology. You can expand RAM to 8 GB, but you need to buy the memory module yourself. The device supports expansion via the Synology DX517, allowing you to scale up to nine drives total. This makes it a flexible choice for growing storage needs. Check your network switch compatibility if you plan to use high-speed transfers. Regular firmware updates from Synology will keep the system secure and stable. This model sits alongside other options like the DS220+ and DS923+. It offers more RAM than the base models but less than the five-bay DS1522+. It suits users who need a balance of performance and compact size.

Check before you buy

• Buy four hard drives for the four bays.
• Check if you need extra camera licenses.
• Plan for potential RAM upgrade to 8 GB.
• Verify network switch speed for optimal transfer rates.
• Compare with DS220+ if budget is tighter.

The product at a glance

1

Synology 4-Bay Intel Quad-Core NAS

Best for: users building custom storage arrays

Drive Bays

4-Bay

Processor

Intel quad-core

RAM Capacity

4GB DDR4

Included Storage

Diskless

Dimensions

8.78 × 7.83 × 6.54 inches

Weight

4.94 pounds

View on Amazon: Synology 4-Bay Intel Quad-Core NAS Affiliate link

The Synology DS920+ is a 4-bay NAS drive with an Intel quad-core processor and 4 GB of DDR4 RAM. It offers over 225 MB/s read and write speeds, supported by hardware encryption. Two M.2 NVMe slots allow for cache acceleration without using storage bays. It includes two camera licenses by default. This unit suits users needing scalable storage and solid performance for media or databases.

Pros

• Intel quad-core processor with AES-NI hardware encryption
• Two built-in M.2 2280 NVMe SSD slots for cache
• 4 GB DDR4 memory expandable up to 8 GB
• Sequential read and write throughput over 225 MB/s
• Two built-in camera licenses included by default

Cons

• Sold diskless with no pre-installed hard drives
• Base RAM is 4 GB, requiring upgrade for higher loads
• Physical dimensions are 7.83 x 6.54 x 8.78 inches

Good fit if

• You need dedicated M.2 SSD slots for cache acceleration
• You want hardware encryption for data security
• You require a scalable 4-bay system for multiple drives

Skip if

• You need pre-installed storage drives in the box
• You require more than four internal drive bays
• You are looking for a unit with more than 4 GB of base RAM

Verdict: Synology DS920+ 4-Bay NAS provides strong sequential throughput and flexible caching options for users who prioritize expandability and encryption. It is ideal for those building a custom storage array from scratch.

Specifications side by side

Frequently asked questions

See also

• synology 4 bay NAS diskstation alternatives
• best synology 4-Bay network attached storages
• maiwo 4 bay nvme cloner review
• aoostar wtr pro 4 2 bay NAS mini PC review