Search  for anything...
Synology

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

    • Based on 2,776 reviews
Condition: Used - Like New
Checking for product changes

Notify me when this product is back in stock

$719.99 Why this price?

Buy Now, Pay Later

As low as / mo
  • – Up to 36-month term with PayTomorrow
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Unavailable
Fulfilled by JMS Holdings
Available payment plans shown during checkout

Recently Viewed

Size: 4-bay; 4GB DDR4


Style: DS920+


Pattern Name: DiskStation


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)

Brand: Synology


Color: Black


Item Dimensions LxWxH: 8.78 x 7.83 x 6.54 inches


Size: 4-bay; 4GB DDR4


Compatible Devices: Laptop, Television, Desktop, Camera, Smartphone


Hard Drive: ‎4 GB Solid State Drive


Brand: ‎Synology


Series: ‎DS920+


Item model number: ‎DS920+


Item Weight: ‎4.93 pounds


Product Dimensions: ‎8.78 x 7.83 x 6.54 inches


Item Dimensions LxWxH: ‎8.78 x 7.83 x 6.54 inches


Color: ‎Black


Flash Memory Size: ‎8


Hard Drive Interface: ‎NVMe


Voltage: ‎100240 Volts


Batteries: ‎1 Lithium Ion batteries required.


Manufacturer: ‎Synology


Language: ‎English, English, English, English


Date First Available: ‎May 15, 2020


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great NAS!
I've had this for around two years now and am very happy with it! It's loaded with four 10TB 7200 WD Red disks. I added additional memory to boost its performance. No complaints at this point! I'm using gigabit ethernet between my main computer and the Synology DS920+. I'm very pleased with its operation and speed. I'm also impressed that Synology continues to release updates to the DSM operating system. I liked this so well, I purchased a DS220+ to solve another storage issue on a different computer. Very happy with both purchases. ... show more
Reviewed in the United States on August 1, 2023 by BER
    • I've bought three of these and I could not be more impressed
I work as a technician for a number of clients, both personal and in small business. One of my clients had ongoing issues replacing their old server (they didn't know what they were doing and got themselves into trouble, which is where I came in). After a day or two of looking at their "new server" and then what they needed (basically, just file storage/sharing), I thought a NAS would meet their needs. I already owned (personally) a small NAS, but I hated it, so I went shopping for something of higher quality. I hit upon Synology as the obvious choice in this range, and while the pricing was higher than "what you could get a NAS for", it was still far less expensive than my client's alternatives. The hardware is easy to set up, even if you're adding RAM or cache disks, as long as you're comfortable doing some basic hardware-type stuff. Adding disks is easier than changing disks in a desktop (but 2.5 drives will need an adapter). Adding RAM is a little bit easier than would be in a laptop (you have to remove some of the disks, but don't need tools). Adding cache disks is similar to adding RAM to a laptop-- flip it over, screwdriver, insert, ya done. IMPORTANT: if you want write-caching, you HAVE to use a second cache disk. For whatever reason, you can't split a cache volume for read/write. If you have just one disk, you can only use Read caching. I wish I had known this ahead of time, or I wouldn't have gotten as large a cache volume, though it is serving me pretty well. Once booted up and online, though, is when a world of wonder begins. The system has feature upon feature upon feature, allowing it to replace far more than just a file server, at no extra cost. There is a package system where you can download optional packages, including things like: Video streaming service (2 kinds!), audio server (complete with mobile app to stream your own music to your phone), Cloud Storage (your own personal Dropbox), system backup (that is, software to backup systems on your network to the NAS) and ways to back up the NAS to elsewhere, IP camera software (with a few licenses included), mail server, group calendar, WebDAV connections, and so much other stuff. You could certainly get all of these features by building your own NAS and using all the open source software out there, but for the amount of effort and ease-of-use here, it's no contest. One thing I was very impressed by with the initial configuration is that Synology have their own type of RAID setup called (SHR-- Synology Hybrid RAID). It has the data-protection and speed benefits of a RAID, but allows it to be used across completely dissimilar disks, as well as adding disks to the same SHR later on (and the volume checking and expansion happens while the NAS is still working)-- this definitely lowers the commitment anxiety to setting up a new disk array. It also has a USB 3.0 port in the front, and you can add external disks that can be mounted and shared seamlessly. The system is highly configurable through the UI, but you can also open a Terminal, or use SSH (if enabled). The task scheduling system can call bash scripts, also. This makes me feel like the UI is a convenience, not a required hindrance. That said, though, the UI is ridiculously thorough. ... show more
Reviewed in the United States on March 19, 2021 by Fletcher
    • Quality, known device. Hardware lags reality, even in the prosumer space
I've used a DS212 for years so I was no stranger to Diskstation 6, which was pretty awesome in every way except expandability and speed. This was my shot to improve both. Within days of installing mine, it upgraded to DS7 which was even better. The UI on the 212 was functional, but lagged into oblivion, The 920 is fast enough on the same network with the same client-side interface (web, browser) that it was easy to forget that you were on a web UI at all. It's SLICK! FOR MY USE, I decided a tricked out 920+ was better than waiting for the 921/922/923.. (Mine is a prosumer network with machines dwarving humans.) I added RAM for VMs and NVMe write caching, well, because I did. $100USD off for Prime Day made it even easier. That gave me a set of known restrictions on aftermarket HD, RAM, and NVMe.. While they take great care to provide everything you need in that pretty web interface, you can also turn on a perfectly functional Linux shell if you're into such things. It's a relatively plain old Linux kernel, now offering up BTRFS which allows nice things like snapshots, previously unavailable. Time Machine images, long a problem for NAS vendors, are possible, but they aren't bulletproof. I have five machines that are flawless and one that keeps needing rebuilt from scratch and I can't figure out the difference why. Others in various NAS forums report similar ghosts in their Synology attics. Buying this on an 8-10 year depreciation schedule, I'm bummed that there just isn't a viable 2.5GBps upgrade path. It's pretty disappointing that there isn't an SFP port on these things so we can replace a couple of $10 1Gbps copper ports for $30 2.5Gbps or $40 5.0 Gbps. That capped speed is my biggest regret/restriction on this product. I've found the synology line and this device in particular handy as: A) A place for Time Machines to live.. B) shared NFS/AFS filestore that's just crazy fast. C) a place for shared apps via Docker to spin up internal applications to share with, um, myself. LAMP instances, Git servers, etc. are all just dead easy. D) (soon) a way for all of the above to be backed up remotely still. E) An easy way to have x86 Linux available house-wide I've made the investment in time to make it all work well and the investment in hardware that I (mostly) have an upgrade path forward. It's not likely that I'll be bummed out by the 2032 equivalent of an RS2121 or HD6500 or whatever. I'm not going to outgrow this product family, so my investment in time won't be totally lost. ... show more
Reviewed in the United States on September 13, 2022 by Robert

Can't find a product?

Find it on Amazon first, then paste the link below.