Synology

Synology 4 bay NAS DiskStation DS920+ (Diskless), 4-bay; 4GB DDR4

Name: Synology 4 bay NAS DiskStation DS920+ (Diskless), 4-bay; 4GB DDR4
Brand: Synology
SKU: B087Z34F3R

Status: Synology 4 bay NAS DiskStation DS920+: Unavailable on Amazon as of 2026-10-21 16:14 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The Synology 4 bay NAS DiskStation DS920+: Two M.2 2280 NVMe cache slots keep all four drive bays free for storage; main trade-off: ships diskless, so four hard drives are an added cost on top of the NAS.

Unavailable on Amazon as of 2026-10-21 16:14 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:

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Original listing (currently unavailable) → Compare to similar nas & home servers

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-21

Mike Perry — Hardware researcher since 2014. For NAS and home-server hardware, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Two M.2 2280 NVMe cache slots keep all four drive bays free for storage
✓ Over 225 MB/s sequential read and write from the Intel quad-core CPU
✓ AES-NI hardware encryption engine offloads encrypted volume overhead
✓ Expands from 4 to 9 drives with the Synology DX517 unit

Cons

✗ Ships diskless, so four hard drives are an added cost on top of the NAS
✗ 4 GB DDR4 caps at 8 GB, limiting heavy virtualization or many containers
✗ Only two camera licenses included; CLP1/CLP4/CLP8 packs cost extra
✗ Reaching 9 bays requires buying the separate DX517 expansion chassis

Manufacturer description

The Synology DiskStation DS920+ is a four-bay diskless NAS built for households and small teams that have outgrown external drives and cloud subscriptions. Its Intel quad-core processor with an AES-NI hardware encryption engine pushes over 225 MB/s sequential read and write throughput, so encrypted backups and multi-user file transfers stay quick instead of bottlenecking your network. Two built-in M.2 2280 NVMe slots accept SSD cache drives without consuming any of the four storage bays, which keeps all four spots free for high-capacity hard drives while Synology SSD Cache technology…

SpecPicks Verdict

SpecPicks scored Synology 4 bay NAS DiskStation DS920+ using a rating × review-volume × price-fit model applied to published specs and reviews across the nas & home servers category. Synology's nas & home servers lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for nas & home servers of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Does the DS920+ come with hard drives?

No. The DS920+ ships diskless, so you supply your own drives for all four bays. Budget for those separately when comparing it against pre-populated NAS units.

How fast is the DS920+ for file transfers?

Synology rates it at over 225 MB/s sequential read and write, driven by the Intel quad-core processor with AES-NI hardware encryption, which is enough to saturate a gigabit connection.

Can I add an SSD cache without losing a drive bay?

Yes. Two M.2 2280 NVMe SSD slots are built in specifically for cache acceleration, so all four storage bays stay available for hard drives.

How much memory can the DS920+ hold?

It comes with 4 GB of DDR4 and is expandable up to 8 GB total. Synology cites an average 15% performance boost to photo indexing and database response on this platform.

Can I expand past four drives later?

Yes. The DS920+ scales up to 9 drives when paired with the Synology DX517 expansion unit, sold separately.

Key Features

Two built-in M.2 2280 NVMe SSD slots permit cache acceleration without occupying storage drive bays.
Intel quad-core processor with AES-NI hardware encryption engine, over 225 MB/s sequential read and write throughput.
4 GB DDR4 memory (expandable up to 8 GB); Scalable up to 9 drives with Synology DX517
Average 15% performance boost to photo indexing and other computing-intensive operations, as well as database response time.
By default, two camera licenses are installed; extra licenses can be purchased (CLP1, CLP4, or CLP8)

Full Specifications

Size	DS920+
Brand	Synology
Color	Black
Material	Metal
Model Number	DS920+
Mounting Type	Tabletop
Mfr Part Number	DS920+
Compatible Devices	Camera, Desktop, Laptop, Smartphone, Television
Enclosure Material	Metal
Warranty Description	3 year
Global Trade Identification Number	04711174723812

Ready to buy?

Amazon shows no buyable offer for Synology 4 bay NAS DiskStation DS920+ at the last check. A similar in-stock product is Asustor Flashstor 6 FS6706T - 6 Bay All-SSD NAS…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Similar — $494.99