Brand | Synology |
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Manufacturer | Synology |
Series | Synology |
Form Factor | 3.5-inch |
Item Height | 6.54 inches |
Item Width | 7.83 inches |
Hard Disk Description | Mechanical Hard Disk |
Hard Drive Interface | Solid State |
Number of USB 3.0 Ports | 2 |
Voltage | 100240 Volts |
Wattage | 32.17 |
Manufacturer | Synology |
Item model number | DS920+ |
Product Dimensions | 22.3 x 19.89 x 16.61 cm; 3.64 Kilograms |
ASIN | B087Z34F3R |
Synology DS920+ Quad Core 2.0 GHz 4-Bay DiskStation, 4GB RAM,4GB DDR4,
Price: | S$839.00 |
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- Scalable NAS with SSD cache acceleration capability
- 4-Core 2.0 GHz, burst up to 2.7 GHz
- Average 15% boost to computing-intensive applications
- Expand up to 9 drives with a DX517 expansion unit
- Complete multimedia solution for management, streaming, and playback
- memory storage capacity: 64.0 TB
- connectivity technology: eSATA
Product information
Size Name:4-bay; 4GB DDR4 | Style Name:DS920+Technical Details
Additional Information
Date First Available | 18 June 2020 |
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Customer Reviews |
5.0 out of 5 stars |
Best Sellers Rank |
6,410 in Electronics (See Top 100 in Electronics)
7 in Network Attached Storage (NAS) Devices |
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Product description
Synology DS920+ is an ideal network-attached storage solution to streamline data management and productivity. Two built-in M.2 SSD slots and Synology SSD Cache technology allow you to boost system I/O and application performance. Scalable storage design lets you start small and expand storage capacity with Synology DX517 as your data grows. DS920+ provides two built-in M.2 SSD slots so that you can take full advantage of Synology SSD Cache functionality. Add SSD cache for up to 20 times faster I/O response without using front drive bays. You can add five more drives with Synology DX517 to expand storage capacity. A more powerful CPU speeds up computing-intensive applications. The new 4-core processor boosts photo indexing, database response times, and web PHP response efficiency. Easily categorize your photo memories, smoothly manage files across computers and mobile devices, and enjoy blazing fast web applications. Synology Drive provides a built-in universal portal to access your data anytime and anywhere, and synchronize all your files across platforms, including Windows, macOS, Linux, Android, and iOS. Virtual Machine Manager enables you to test new software in sandboxes, isolate your customers' machines, and increase the flexibility of your server. You can easily run Windows, Linux, and Virtual DSM on your Synology NAS by just a few steps. Perfectly clone and restore a virtual machine within seconds. Seamlessly migrate Virtual DSM instances from a Synology NAS to another. Create multiple isolated virtual machines for subsidiary business units or departments. Store multiple backup versions with block-level incremental data backup and cross-version deduplication.

Scalable NAS with SSD cache acceleration capability
Synology DS920+ is an ideal NAS solution to streamline data management and productivity. Two built-in M.2 SSD slots and Synology SSD Cache technology allow you to boost system I/O and application performance. Scalable storage design lets you start small and expand storage capacity with Synology DX517 as your data grows.
Accelerate demanding applications
A more powerful CPU speeds up computing-intensive applications. Easily categorize your photo memories, smoothly manage files across computers and mobile devices, and enjoy blazing fast web applications.
- 4-core 2.0 GHz, burst up to 2.7 GHz
- 2 x built-in M.2 2280 NVMe SSD slots
- Two USB 3.0 ports
- Provides sequential read and write throughput of over 225 MB/s*
- *Performance figures may vary depending on the environment, usage, and configuration
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File sharing and syncingWith comprehensive support for network file sharing protocols — like CIFS, AFP, NFS, FTP and more — DiskStation allows the entire office to centralize files and collaborate on projects. Or synchronize files across multiple devices or even across several locations so remote teams can work together. |
Your own personal multimedia serverDiskStation allows you to transcode H.265/H.264 4K videos to 1080p and stream them to high-definition TVs, digital media players, mobile handsets, and computers in the required format, making it easy to watch your entire multimedia library without having to install a 3rd party player. |
Bulletproof backupMaintain control of your data and ensure your files are safe with Synology. We provide secure, reliable, and affordable solutions that make it easy to backup files for all your devices and protect yourself from accidental data loss. |
24/7 smart security solutionSurveillance Station delivers intelligent monitoring and video management tools such as managing multiple IP cameras with live streaming, integration of I/O modules and more to help safeguard all the important places in your life. |

Easy file access with QuickConnect
Access your files anywhere, any time, over the Internet without the hassle of setting up port forwarding rules, DDNS, or other complicated network settings. QuickConnect allows you to connect via a simple customizable address so that you can instantly access media and work files on any Windows/Mac/Linux computer, laptop, or mobile device without additional charge.

More Than Just Storage
DS920+ is more than just storage, featuring a suite of add-on applications via Synology Package Center. With 90+ apps to choose from, you can transform your Synology NAS into an all-in-one server, cloud syncing host, multimedia hub, and much more.

Rest assured your data remains safe and secure
DiskStation offers an arsenal of security enhancements and tools to safeguard your data from malicious or snooping parties. You can block threats with the firewall, auto-blocking, and more. Audit configurations, detect weak passwords, and ensure the system remains free of vulnerabilities with the built-in Security Advisor. Lock down data storage and network communication with sophisticated AES encryption and SSL certification/Let’s Encrypt tools.

Integrate into your business environment
With the support of Windows AD, LDAP, and Domain Trust, DS920+ enables seamless account integration. Windows ACL support allows admins to fine-tune access controls and set up privileges to files and folders. For larger deployments, the Central Management System (CMS) application delivers a single-pane-of-glass admin console, where you can batch manage multiple Synology products by automating tasks and setting up policies.




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Synology DS220+ | Synology DS420+ | Synology DS720+ | Synology DS920+ | |
Drive Bays | 2 | 4 | 2 | 4 |
Maximum Drive Bays with Expansion Unit | 2 | 4 | 7 | 9 |
Maximum Internal Raw Capacity | 32 TB (16 TB drive x 2) (Capacity may vary by RAID types) | 64 TB (16 TB drive x 4) (Capacity may vary by RAID types) | 32 TB (16 TB drive x 2) (Capacity may vary by RAID types) | 64 TB (16 TB drive x 4) (Capacity may vary by RAID types) |
CPU | 2-core 2.0 (base) / 2.9 (burst) GHz | 2-core 2.0 (base) / 2.9 (burst) GHz | 4-core 2.0 (base) / 2.7 (burst) GHz | 4-core 2.0 (base) / 2.7 (burst) GHz |
Hardware Encryption Engine (AES-NI) | ✓ | ✓ | ✓ | ✓ |
Memory | 2 GB DDR4 (Expandable up to 6GB) | 2 GB DDR4 (Expandable up to 6GB) | 2 GB DDR4 (Expandable up to 6GB) | 4 GB DDR4 (Expandable up to 8GB) |
RJ-45 1GbE LAN Port | 2 (with Link Aggregation / Failover support) | 2 (with Link Aggregation / Failover support) | 2 (with Link Aggregation / Failover support) | 2 (with Link Aggregation / Failover support) |
USB 3.0 | 2 | 2 | 2 | 2 |
Compatible Drive Type | 3.5" SATA HDD, 2.5" SATA HDD, 2.5" SATA SSD | 3.5" SATA HDD, 2.5" SATA HDD, 2.5" SATA SSD, M.2 2280 NVMe SSD | 3.5" SATA HDD, 2.5" SATA HDD, 2.5" SATA SSD, M.2 2280 NVMe SSD | 3.5" SATA HDD, 2.5" SATA HDD, 2.5" SATA SSD, M.2 2280 NVMe SSD |
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Most helpful customer reviews on Amazon.com

TLDR: Right off the bat, for those looking for a quick answer, I highly recommend buying this Synology model over the others due to it's extremely good price to performance ratio. You won't find a better price for what you get with any of the others. Trust me, I spent two years looking into these NAS units.
Now into the intricate details this unit deserves:
- PC Specs -
CPU: Intel Celeron J4025 Dual Core @ 2 GHz (Can overclock to 2.9GHz, but I haven't figured out how yet)
RAM: 2GB (2048 MB) DDR4, which is actually removable and expandable up to 6GB.
OS: Custom Linux
The upgradeable 2GB of RAM is probably what sealed the deal for me. All cheaper options only offer smaller portions that are soldered on, meaning you're stuck with it until the unit is too slow and obsolete for the larger file sizes and more demanding use applications of the future. If you have plans to use this as a website or web app server, having a modular NAS is KEY. You will need the ability to expand WITH your project- whatever it is.
The 2GB included is plenty for my current use case, which is simply for scheduled automatic backups. The max RAM usage I've seen while running two simultaneous backups was about 43%, which leaves a healthy margin un-used should I decide to add on another service later on, like Plex.
For your hard drives, make sure to get 7200RPM drives that are made for NAS. They are designed to run 24/7 with an extremely low rate of error. SSDs are definitely not needed unless you are backing up large drives (2TB+) and would be extremely expensive. The NAS comes with dual ethernet ports to help distribute the network load in case that is a bottleneck for you.
- Pricing-
This Model definitely doesn't win the "Lowest price" cake, but at $300 that's not necessarily a bad thing. The cheapest NAS you could safely buy is the QNAP TR-002 2 Bay for $147, but unfortunately they didn't list their full specs anywhere, which made it impossible for me to rank it on my list, and sketched me out from trying it. The QNAP may have had a shot at making the top of my list, but who knows what CPU is included, how much RAM is included, and is it soldered in or not?
- Ease of use -
This was an easy setup for me as an experienced technology user. I'm used to setting up various OS systems and this was a more streamlined setup than I'm used to. You simply log in via it's web interface with a web browser and follow the simple setup steps. I'm glad Synology took the effort to make it easier for first time users, but you still may need some help from them to set up individual settings, as the included instructions and the DSM Help app inside the OS don't include as much information as I would like. I had to poke around the software to find some settings, and some things (Like overclocking the CPU), I never did find.
- Stability -
Thus far, with 23 days and 17 hours of uptime, I have yet to experience any problems that could hinder my backups or put my data in jeopardy. It's been nothing but smooth sailing. I have been using Synology's app, "Active Backup for Business" to back up all three of my computers. I was impressed that the software supports partial backups, meaning you can turn off a computer mid-backup, and resume the backup upon reboot. This is essential for computers with extremely large hard drives which are not desired to be running 24/7. The backup software made it incredibly easy to install the client software on each computer and set up a unique or similar backup schedule for each one. I've already done many backups (I have them scheduled for every other day) and I also did a restore to make sure it worked successfully.
- What you can use this for -
I'm not sure I'm prepared to write down every single use case, that is how many options you have with this NAS. I will list some of the most popular available packages though:
- Multiple backup programs
- Antiviruses
- Media servers (Including Plex)
- Web server package (Installs Nginx, Apache, and PHP)
- Wordpress
- Mail servers
- VPN server
- Chat server
- And way more
And for developers, you can install whatever framework or library you need.
- Docker
- Git
- Node.js
- Pearl
- PHP
- PHP MyAdmin
- Python
- And a lot more
This is a true NAS, and I'm glad Synology didn't cut usability for simplicity sake. The OS is still very simple and easy to navigate, but can also be used for advanced features. For example, terminal isn't available to access from the desktop, but you can enable SSH in the control panel and access terminal commands that way.
To sum it up, as far at price to performance goes, this easily takes the gold plaque. It has a low-mid range price with mid-high range performance that is rare to find nowadays.
I sincerely hope this review helped someone, as there was not nearly enough informative reviews while I was searching for myself. If this did help you, click the upvote to help others see this information. If you have questions, I'm open to trying stuff with it and helping you out, just comment below. As long as Amazon notifies me of your comment, you will hear back from me ;).

Reviewed in the United States on 22 September 2020
TLDR: Right off the bat, for those looking for a quick answer, I highly recommend buying this Synology model over the others due to it's extremely good price to performance ratio. You won't find a better price for what you get with any of the others. Trust me, I spent two years looking into these NAS units.
Now into the intricate details this unit deserves:
- PC Specs -
CPU: Intel Celeron J4025 Dual Core @ 2 GHz (Can overclock to 2.9GHz, but I haven't figured out how yet)
RAM: 2GB (2048 MB) DDR4, which is actually removable and expandable up to 6GB.
OS: Custom Linux
The upgradeable 2GB of RAM is probably what sealed the deal for me. All cheaper options only offer smaller portions that are soldered on, meaning you're stuck with it until the unit is too slow and obsolete for the larger file sizes and more demanding use applications of the future. If you have plans to use this as a website or web app server, having a modular NAS is KEY. You will need the ability to expand WITH your project- whatever it is.
The 2GB included is plenty for my current use case, which is simply for scheduled automatic backups. The max RAM usage I've seen while running two simultaneous backups was about 43%, which leaves a healthy margin un-used should I decide to add on another service later on, like Plex.
For your hard drives, make sure to get 7200RPM drives that are made for NAS. They are designed to run 24/7 with an extremely low rate of error. SSDs are definitely not needed unless you are backing up large drives (2TB+) and would be extremely expensive. The NAS comes with dual ethernet ports to help distribute the network load in case that is a bottleneck for you.
- Pricing-
This Model definitely doesn't win the "Lowest price" cake, but at $300 that's not necessarily a bad thing. The cheapest NAS you could safely buy is the QNAP TR-002 2 Bay for $147, but unfortunately they didn't list their full specs anywhere, which made it impossible for me to rank it on my list, and sketched me out from trying it. The QNAP may have had a shot at making the top of my list, but who knows what CPU is included, how much RAM is included, and is it soldered in or not?
- Ease of use -
This was an easy setup for me as an experienced technology user. I'm used to setting up various OS systems and this was a more streamlined setup than I'm used to. You simply log in via it's web interface with a web browser and follow the simple setup steps. I'm glad Synology took the effort to make it easier for first time users, but you still may need some help from them to set up individual settings, as the included instructions and the DSM Help app inside the OS don't include as much information as I would like. I had to poke around the software to find some settings, and some things (Like overclocking the CPU), I never did find.
- Stability -
Thus far, with 23 days and 17 hours of uptime, I have yet to experience any problems that could hinder my backups or put my data in jeopardy. It's been nothing but smooth sailing. I have been using Synology's app, "Active Backup for Business" to back up all three of my computers. I was impressed that the software supports partial backups, meaning you can turn off a computer mid-backup, and resume the backup upon reboot. This is essential for computers with extremely large hard drives which are not desired to be running 24/7. The backup software made it incredibly easy to install the client software on each computer and set up a unique or similar backup schedule for each one. I've already done many backups (I have them scheduled for every other day) and I also did a restore to make sure it worked successfully.
- What you can use this for -
I'm not sure I'm prepared to write down every single use case, that is how many options you have with this NAS. I will list some of the most popular available packages though:
- Multiple backup programs
- Antiviruses
- Media servers (Including Plex)
- Web server package (Installs Nginx, Apache, and PHP)
- Wordpress
- Mail servers
- VPN server
- Chat server
- And way more
And for developers, you can install whatever framework or library you need.
- Docker
- Git
- Node.js
- Pearl
- PHP
- PHP MyAdmin
- Python
- And a lot more
This is a true NAS, and I'm glad Synology didn't cut usability for simplicity sake. The OS is still very simple and easy to navigate, but can also be used for advanced features. For example, terminal isn't available to access from the desktop, but you can enable SSH in the control panel and access terminal commands that way.
To sum it up, as far at price to performance goes, this easily takes the gold plaque. It has a low-mid range price with mid-high range performance that is rare to find nowadays.
I sincerely hope this review helped someone, as there was not nearly enough informative reviews while I was searching for myself. If this did help you, click the upvote to help others see this information. If you have questions, I'm open to trying stuff with it and helping you out, just comment below. As long as Amazon notifies me of your comment, you will hear back from me ;).









There are some things to be aware of at the time of this writing:
1. If you are using Plex on this, there is an extra step to enable the hardware encoding (even with the hardware encoding checkbox checked). I guess, since this NAS is so new (7/13/2020) at the moment, the current releases have not caught up to it yet. Following the instructions others found to enable hardware transcoding worked for me. Search for "reddit plex ds920 transcoding" and you will find it. If you don't want to do this fix, I suspect the issue will be remedied in later Plex package updates for this model. Plex's current NAS guide at the time of this writing says "evaluating".
2. The Synology package manager apparently does not list all the items available in third party package repositories. There is a flag that they did not set in their OS. Not sure if there is an eta on when that will be fixed (I'm assuming it will be at some point).
3. There are some guides online that have tested 16GB RAM modules with success in this (for a total of 20GB with 4GB onboard). If you are looking to upgrade the RAM, this looks very promising.
Otherwise, I'm happy with it this purchase so far.

Setup was quick, however I did my homework and googled instructions for the tasks I needed accomplished ahead of time.
The setup wizard only walks you thru the basic settings of the unit and doesn’t even touch on most of the features that make this unit the power house that it is. Make a list of things you want your NAS to do, check the UTubes for a good guide and you won’t be disappointed.
One thing I noticed is that this unit only comes with 4gb of ram. Again this is enough for “Basic” use. You will want to upgrade to at least the max “supported” ram of 8gb to do anything with video surveillance or VM’s.
You can upgrade this box to 20gb total using non-supported modules. Just keep in mind that is “not supported” and synology will be unable to assist you with any problems while such modules are installed.
I used this 920+ for about 2 weeks with the base 4gg. Performance was fine for basic file sharing and single backup operations. Use of the Plex server caused a bit of lagging if other operations were also going on.
I then upgraded my unit with another 4gb for a total of 8gb (max supported by Synology tech support). Plex was a lot more happier with this configuration and I was able to stream regardless of any backup tasks going on.
This is when I threw in a wrench and tried to do VMs as well. Depending on the OS you are using, Windows in particular just won’t be happy with anything less then 4gb assigned to the VM. That being said, with a max of 8 gb on the NAS I was only able to field one VM and even then I was back to stuttering streams etc.
To solve my issue I went outside the boundaries of supported specs and upgraded my 920+ to 20gb total by using a single 16gb dimm. Let me tell you, this thing handles everything I need it to now.
I may need to upgrade to a stronger unit CPU wise down the line but for what this unit is targeted at it handled it 100%. Just be sure to upgrade the memory for what your trying to do.