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Synology 2 bay NAS DiskStation DS720+ (Diskless)

Ships from Canada.

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  • 2-Bay
  • Usage Backup & stream media through personal cloud
  • Diskless System
  • Intel Celeron J4125 4-core 2.0GHz, burst up to 2.7GHz Processor
  • 2 x 10/100/1000M
  • 2 x USB3.0

  • Overview
  • Specs
  • Warranty & Returns
  • Reviews

Synology DS720+

Scalable NAS with SSD cache acceleration capability

A two-bay network attached storage solution that offers an easy and reliable way to protect, share and manage your data. Backup and protect your files from multiple platforms including PCs, Macs and phones. Share a document and collaborate with co-workers in a secure way. Stream media to various devices — computers, smartphones, media players, and TVs — for non-stop, fun watching experience.

Hardware-wise, the DS720+ is powered by an Intel quad-core processor and 2 GB DDR4 memory (expandable up to 6 GB), and comes with two Gigabit Ethernet ports that support Link Aggregation and Failover. Two built-in M.2 SSD slots and Synology SSD Cache technology allow you to boost system I/O and application performance. It also supports scalable storage design, so you start small and expand storage capacity with optional Synology DX517 as your data grows.


4-core 2.0 GHz, burst up to 2.7 GHz

Cache Acceleration

2 x built-in M.2 2280 NVMe SSD slots


Average 15% boost to computing-intensive applications*


Expand up to 7 drives with a DX517 expansion unit

* Performance figures are based on the average percentage improvement of DS720+ relative to its predecessor, as tested at Synology labs. Test items include file indexing in Synology Drive and photo indexing in Moments.

Optimize performance and capacity

DS720+ 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.

Accelerate demanding applications

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.

Access and sync your files seamlessly

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.

Sync files on demand: Save the storage space and network bandwidth of your PC.

Go back in time: Easily retrieve previous versions of your shared files.

Back up your data: Protect your files as scheduled or in real-time.

Real-time collaboration on your private cloud

Synology Office is a collaboration package combining the convenience and usability of public clouds with the data privacy and security guaranteed by private clouds. It allows you to work seamlessly together on documents and spreadsheets in a protected environment.

Seamless integration with your mobile devices

Synology mobile applications are designed to allow quick and secure access to your data wherever you are.

DS audio


DS video

Powered by Synology DSM


Complete multimedia solution for management, streaming, and playback.

Hyper Backup

Store multiple backup versions with block-level incremental data backup and cross-version deduplication.

Desktop Backup

Simplified backup solution for your Mac, PC, and mobile devices.

Snapshot Replication

Schedulable and instantaneous data protection for shared folders and iSCSI LUNs for disaster prevention.

Surveillance Station

Complete surveillance solution for recording, monitoring, and management.

Synology Drive

A versatile solution for file management and synchronization.

1. Drive tray

2. Drive tray lock

3. Status indicator

4. Drive status indicator

5. USB 3.0 port

6. Power button and indicator

7. System fan

8. 1GbE RJ-45 port

9. Reset button

10. eSATA port

11. Power port

12. Kensington Security Slot

Learn more about the Synology Inc. DS720+

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy.
Ownership: 1 week to 1 month
Verified Owner
5/ 5
The Synology NAS Rocks! 9/20/2020 6:02:39 AM

Pros: My DS220+ was easy to set up, and fast in operation. I use it as a data hub at home and access time is much faster than the Netgear RN212 (which died at 3 yrs of service) it replaced. I installed recommended drives (WD Pros) and transferred my files from an external backup to the NAS. It been running for just a few weeks and I’m tickled at the speed of file access. If I get the longevity I expect, I’ll add another egg!

Cons: None

Overall Review: I would recommend this to anyone looking for a server for their home or small business.

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Ownership: 1 week to 1 month
Verified Owner
4/ 5
Great NAS for 1st timers 9/15/2020 8:35:21 AM

Pros: -Hardware and software setup is dead simple.
-Build is good and appreciate the plastic carriers to minimize noise.
-Using 2, 10TD WD Red drives (WD100EFAX, older model) the set up is QUIET.

Cons: -the front panel is held closed via rubber grommets and not sure of longterm "snugness"
-USB port in back could be better located. It's presently between the power connector and ethernet port thus requiring you to turn and see the port directly to connect a USB cable.

Overall Review: Truly happy I picked this model to initiate me to the world of NAS. Synology has abundant info and support and online YT videos are available to help you.
One huge kudos to Newegg for the fantastic packaging of the drives and the NAS; keeping everything safe.

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Ownership: 1 week to 1 month
Verified Owner
5/ 5
Synology 2 bay NAS 9/14/2020 8:05:13 AM

Pros: This product is the best buy I ever seen, easy to install and program,
Material received on time.

Overall Review: Super on all aspect

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Ownership: 1 week to 1 month
Verified Owner
4/ 5
Works great with proper setup, assuming you can find instructions you're looking for 9/3/2020 8:17:49 AM

Pros: Newest model (as of this date)
Link aggregation (and ability to mimic if not supported by your router with "Adaptive Load Balance")
SSD cache slots
DSM OS and suite of apps
Expandable RAM
Newegg able to supply all components quickly, with great packaging, no issues detected to date.
Moment backup of mobile device photos/videos

Cons: Instructions not intuitive for beginner low/intermediate users, have to dig for info or google
Need hardware upgrades to maximize functionality
Inability to migrate oldest DSM systems
No standard "Public" folder
wish it had a more powerful CPU (with other upgrades installed)

Overall Review: My 720+ is a replacement for a DS211j setup back in 2011 that was ending DSM upgradability and hardware (processor/RAM) being overwhelmed. I am using my NAS in a personal/family setting. So I have familiarity with Synology and DSM and would classify myself as low intermediate level knowledge user for perspective when considering this review. I have spent some time getting things setup and running properly and have taken my time to make sure its getting done right, including the research before purchase.
The Setup:
(2) WD Red Pro 6tb 7200rpm 256mb cache 6gb/s in Raid 1
(1) Samsung 970 EVO 500gb SSD cache (MZ-V7S500B/AM) (note read only see below)
G.Skill Ripjaws 4GB DDR4 2666 (PC4 21300) (F4-2666C18S-4GRS)
802.3AD Link Aggregation to Asus ROG Rapture GT-AC5300
Arris SB8200 modem
So far I've had no problems with this setup just a matter of figuring out how to get everything setup properly. Also I installed the SSD cache and 4GB Ram prior to initial startup of the 720+. The Samsung SSD was on the approved synology list for the 720+. I debated between that SSD and a prior samsung model and 250gb models, but this was more bang (capacity and speed) for slightly more buck ($13 more). One thing I didn't realize until setup was that if you want a read/write cache you need to have 2 SSD sticks, 1 stick will only do read cache. Also note that the size of your cache (per GB) will require a reserve of your RAM. This 500gb cache took approx. 200mb of RAM, so keep in mind R/W will double that reserve. Not a problem for me since I upgraded the RAM from the start. Regarding RAM, some have noted issues with a Crucial so I took a $20 educated gamble and went with this G.Skill which seemed to match all specs of the Synology RAM including non-ECC and has slightly lower latency than the Crucial. So far so good. I can see where those without these upgrades (RAM and SSD cache) and lower performance tier HDD (rpm, cache) would run into performance issues. Pretax this setup came in around 880 with a couple promos. Everything arrived in one shipment and was well packaged and protected via Newegg.
Link Aggregation setup took a little figuring out with my GT-AC5300 router. Note turn off link aggregation on the router until after it is setup and turned on in in the 720+ otherwise the 2nd LAN port won't be recognized. Since my router supported AD link aggregation I'm setup in that mode. As a side note there is a synology "adaptive load balance" link aggregation mode that allows link aggregation even if not directly supported by your router. Once I had the bonded 2gb link setup and running I immediately noticed the difference
As my prior 211j couldn't follow the direct migration protocol and I wasn't going to move my 9yo HDD's I had to transfer everything over. Biggest issue with transfer of course was photo/videos. This wasn't an issue for the RAM/connection/HDD but did put significant load on the CPU (which at this point is the weak link internally) which initially had me freaked out based on experience of others. Transfer of 60,000+ photos and 10,000+ videos caused the CPU to run at 99% for about 2.5 days to process, tag, etc. I will say later backup of 17,000 photo/video for 1 iphone through moments took about 8 hours for transfer on 5ghz AC and then an overnight 99% CPU run to process, tag, etc. on the 720+ itself. The task manager app showed exactly what was going, and after, everything was back to normal with CPU. I was still able to access the 720+ thru DSM & had use of other apps. I have to believe the improved performance I'm getting compared to others is a direct result of my upgraded setup RAM, SSD, high perf. HDD, link aggregation. I'm less concerned about the CPU now that I'm thru that process. My other bottleneck is of course my ISP, my current ISP package only provides 10mb/s UPLOAD capacity (200-300mb/s download), depending on how things go may look at a higher speed ISP package. Question is how long will this NAS setup last?, hoping to get 8 years similar to prior model, considering this is top of the line 2 bay model.
If you're considering what NAS to buy & planning to use your NAS for photo and more so video streaming/remote access & backup then you need to forget those low level base models, the 720+ is what you want (as far as 2 bay models go) keep in mind you will also need to spring for some upgrades. But then again if you are buying the 720+ for those add-on capabilities you might as well put them to use.
For those with little to no NAS experience Synology and DSM is user friendly, but you have to dig to find the right info. User guide just tells you to go look under DSM help and you have to install apps before their DSM help files show up. I would have hoped that by now DSM would have come closer to an "Apple/ios" like intuitive experience but it seems like you have to dig more now to find info than you did a few years ago. That being said it's still one of the best NAS OS out there.

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Ownership: 1 week to 1 month
Verified Owner
5/ 5
Easy to set up. 8/25/2020 9:10:46 AM

Pros: - Very easy to setup
- File sharing and synology video and photos apps work great
- Synology proxy link to your device

Overall Review: Perfect for backup and access data from computers and phones.

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
If you don't have a Synology NAS, you are completely missing out 8/25/2020 8:52:02 AM

Pros: DSM is the bomb
Run VMs
Run Docker Containers
Scale your storage
Integrated Plex server
SSD (m.2) read/write cache
RAM expandable to 20GB (reliably)

Cons: Expensive but you get what you pay for

Overall Review: The DS920+ is an awesome NAS. I coupled mine with the DX517 expansion unit because I wanted the horsepower of the DS920+ with the expandability of the 1618. While rather expensive, I couldn't be happier in the end.

I have decommissioned all my other (toy) NAS / DAS units. My media collection has been consolidated and extended to my Android TV. I have DNS over TLS and DHCP running in a Docker container to keep big brother at bay. An Ubuntu VM hosts Parrot Sphinx with Ralink USB Wi-Fi adapter bound to it for supporting my software development efforts.

Expanding the RAM is a breeze. Match the speed / specs of the soldered 4GB NANDs and you can comfortably add an additional 16GB. I've been running with 20GB for about a month now with zero issues.

I started with a RAID-5 array of 4 4TB WD Reds. I added the dx517 and pieced together an assortment of drives on it with varying capacity to create an SHR-2 array. I then broke the original RAID-5 array and added those drives to the new SHR-2 array. Then over the next couple weeks I swapped out the lower capacity drives I threw together to make the SHR-2 array with bigger drives to raise my total usable storage to about 22 TB.

Love love love this thing!

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Ownership: 1 week to 1 month
Verified Owner
5/ 5
First Synology NAS and very impressed 8/20/2020 12:45:55 PM

Pros: Really easy to use
Tool-less installation with rubber/plastic mounts for drives
2 GB is plenty for a lot of things: can handle media servers and docker
Hardware acceleration for AES is great for fast encryption/decryption
Synology software has pretty much everything you need in a nice UI
BTRFS will be nice for bitrot and snapshots
SHR drive fault tolerance is extremely easy to set up

Cons: Need to purchase exFAT for some reason? this is included in modern versions of the Linux kernel so not sure why this is the case
Quiet setting for fan is not adequate cooling for Ironwolf 7200rpm drives (mid 40s). Just change to the cool setting and can get it to high 30s or 40
Docker UI won't work if you need certain elevated capabilities, but enable SSH and just run docker commands from the shell

Overall Review: The price is a bit steep given the hardware specs but I would advocate that the software makes up for it. The DSM UI is very easy to use and the package manager supports a lot of software that you can use just with a few clicks. It doesn't consume that much power and its small size allows you to put this thing in a lot of places. The device itself is completely silent, however my drives are noisier than I would have liked them to be.

I would purchase Synology again.

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Awesome 8/15/2020 8:17:23 AM

Overall Review: Excellent

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