RAM | 2 GB |
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Hard Drive | 20 TB |
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Synology 2 bay NAS DiskStation DS218+ (Diskless)
We don't know when or if this item will be back in stock.
Brand | Synology |
Color | Black |
Product Dimensions | 9.14"D x 4.25"W x 6.5"H |
Size | 2-bay; 2GB DDR3L |
Material | Aluminum, Alloy Steel |
About this item
- Encrypted sequential throughput performance at over 113 MB/s reading and 112 MB/s writing
- Dual-core Processor with AES-NI encryption engine
- 2GB DDR3L memory (expandable up to 6GB)
- Advanced Bars file system offering 65, 000 system-wide snapshots and 1, 024 snapshots per shared folder
- Live transcoding of up to two concurrent H. 265/H. 264 4K video streaming
- By default, two camera licenses are installed; extra licenses can be purchased (CLP1, CLP4, or CLP8)
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Top Brand: Synology
What's in the box
From the brand

Synology NAS Drives
Purpose-built for Synology systems
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Shop Plus Series NAS drives
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Designed for Synology systems
Reliable 3.5" SATA hard drives are made for 24x7 use in home and small office Synology NAS systems.
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Rigorously tested NAS drives
Subjected to thorough compatibility and stress testing to ensure smooth 24/7 operation under multi-user workloads.
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Seriously dependable drives
100% conventional magnetic recording (CMR) technology ensures consistent write performance throughout their lifespans.
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Easy firmware updates
Firmware updates can be performed directly through DSM, ensuring the latest patches while eliminating the need for disk removal.
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Readers' Choice Award - since 2010
Among PCMag readers, Synology scored a 9.2 out of 10 in overall satisfaction and a 9.3 in the likelihood to recommend, Synology far outpaced its competitors in these categories.
Business Choice Award - since 2013
Synology won both Home-Office NAS and IT Manager's Choice. Synology earned an 9.4 rating for likelihood to recommend and a 9.2 in overall satisfaction from PCMag business respondents.
From the manufacturer


Compact yet powerful storage solution
Featuring a powerful dual-core CPU, Synology DiskStation is perfect for home users or small businesses looking for a compact and reliable shared storage solution to process intensive workloads.
Next-generation file system for better data protection
DS218+ integrates the Btrfs file system, delivering the most advanced storage technology to meet the management needs of small businesses.
4K Ultra HD video transcoding
DiskStation’s real-time H.265/H.264 4K video transcoding provides hassle-free and high-quality video playback among various devices.
- Dual-core 2.0 GHz CPU
- 2GB DDR3L-1866 memory (expandable up to 6GB)
- Three USB 3.0 ports
- Over 113 MB/s sequential reading and 112 MB/s writing*
- *Performance figures may vary depending on the environment, usage, and configuration.
File sharing and syncing
With 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 server
DiskStation 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 backup
Maintain 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 solution
Surveillance 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
The DS218+ 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, DS218+ 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 DS218+
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Synology DS718+
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Synology DS918+
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Customer Reviews |
4.7 out of 5 stars 2,607
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4.7 out of 5 stars 2,607
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Drive Bays | 2 | 2 | 4 |
Maximum Drive Bays with Expansion Unit | 2 (no expansion unit support) | 7 (with DX517 expansion unit) | 9 (with DX517 expansion unit) |
Maximum Raw Capacity with Expansion Units | 24 TB (12 TB HDD x 2) (Capacity may vary by RAID types) | 84 TB (12 TB HDD x 7) (Capacity may vary by RAID types) | 108 TB (12 TB drive x 9) (Capacity may vary by RAID types) |
Hot Swappable Drives | ✓ | ✓ | ✓ |
CPU | Intel Celeron J3355 Dual-core 2.0 GHz | Intel Celeron J3455 Quad-core 1.5 GHz | Intel Celeron J3455 Quad-core 1.5 GHz |
Hardware Encryption Engine (AES-NI) | ✓ | ✓ | ✓ |
Memory | 2 GB DDR3 (Expandable up to 6GB) | 2 GB DDR3 (Expandable up to 6GB) | 4 GB DDR3 (Expandable up to 8GB) |
1GbE LAN Ports | 1 | 2 (with Link Aggregation / Failover support) | 2 (with Link Aggregation / Failover support) |
USB 3.0 | 3 | 3 | 2 |
Hardware transcoding engine | H.264 (AVC), H.265 (HEVC), MPEG-2, VC-1; maximum resolution: 4K (4096 x 2160); maximum frames per second (FPS): 30 | H.264 (AVC), H.265 (HEVC), MPEG-2, VC-1; maximum resolution: 4K (4096 x 2160); maximum frames per second (FPS): 30 | H.264 (AVC), H.265 (HEVC), MPEG-2, VC-1; maximum resolution: 4K (4096 x 2160); maximum frames per second (FPS): 30 |
Product information
Technical Details
Brand | Synology |
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Series | DiskStation Value |
Item model number | DS218+ |
Item Weight | 2.87 pounds |
Product Dimensions | 9.14 x 4.25 x 6.5 inches |
Item Dimensions LxWxH | 9.14 x 4.25 x 6.5 inches |
Color | Black |
Manufacturer | Synology America Corp |
ASIN | B075N1BYWX |
Is Discontinued By Manufacturer | No |
Date First Available | September 15, 2017 |
Additional Information
Customer Reviews |
4.7 out of 5 stars |
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Best Sellers Rank | #310 in Network Attached Storage (NAS) Enclosures |
Warranty & Support
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Synology 2 bay NAS DiskStation DS218+ (Diskless)
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Product Description
Synology Disk Station DS218+ features a dual-core processor with AES-NI encryption acceleration and a transcoding engine, providing high-speed file transfers and supporting real-time 4K transcoding. DS218+ is ideal for protecting critical assets and sharing files across different platforms. Synology DS218+ is backed by Synology 2-year limited .
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the NAS system easy to set up and appreciate its functionality, noting it works out of the box. The device receives positive feedback for its speed, with file transfers being very quick, and its build quality is praised for being solid and reliable. Customers consider it great for home and small business use, with extensive software apps available for installation. The storage capacity is particularly appreciated, with customers noting it's excellent for storing 4K videos.
AI-generated from the text of customer reviews
Customers find the NAS system easy to set up and use, describing it as user-friendly and approachable for beginners. One customer specifically mentions that the migration instructions and tools were great.
"...On top of that, it makes doing those things easy and my curiosity in the more complicated things it can do has only helped me learn and refine my..." Read more
"...Synology has done a great job giving non technical users a great place to start, and more technical users the ability to remove some of the guard..." Read more
"...Installation - which required that I install two HDDs - was very easy and literally took me 10 minutes and that is because I don't like to read the..." Read more
"...for note taking than OneNote but the tasks in Note Station are easy to prioritze, give sub tasks, due dates and set reminders...." Read more
Customers find that the NAS system works well out of the box, though some report it only worked for one day.
"...It runs perfectly all the time, my data feels safe and secure, the features are plenty, and it saves me a lot of time that a custom server would not..." Read more
"...It felt like you were working on an actual computer running linux, a lot of customization, and the ability to work on your documents through your..." Read more
"...caching will slowly improve things over time, so it works well with certain types of data-access, but for sequential or random type of access that..." Read more
"...The music and photo apps work very nice - they could have a few more features for sorting, but I assume those will come with time...." Read more
Customers find the NAS system to be well worth the investment.
"...and originally went with the WD My Cloud Ultra EX2 which was great for the price, but didn’t have enough functionality/customization and I ended up..." Read more
"...It was seriously slow, even crippled. But it's shared storage! Cheap, easy, reliable, and is low-power so you can run it 24x7...." Read more
"...more than just a network drive with backup options, this is a great choice...." Read more
"...I use my NAS to sync my OneNote notebooks. It does a pretty good job...." Read more
Customers report that the NAS system is 100% faster than their previous models, with quick file transfers and incredible load times for files.
"...my data feels safe and secure, the features are plenty, and it saves me a lot of time that a custom server would not have whenever I want to make..." Read more
"...It is now working like a charm and does not seem to impact performance of my PCs...." Read more
"...That said, the NAS is quiet, responsive, no hiccups or outages, quick with the I/O, self-maintaining, etc...." Read more
"...I made were needed in order to get it to work as well and as smoothly as a video server...." Read more
Customers praise the NAS system's solid build quality and reliability, describing it as a very stable device with high-quality components.
"...It runs perfectly all the time, my data feels safe and secure, the features are plenty, and it saves me a lot of time that a custom server would not..." Read more
"...+Free Custom Domain (Ends in synology.me) +Solid construction +2 Step Verification -Expensive -Lock and Key feel cheap..." Read more
"...The great thing about nas is reliability. My DS713+ and DS716+ ran 24x7 year after year, and i never had a single problem with it...." Read more
"...If you are looking for a solid out of the box NAS you can consider this as one of your options but know that if you are going to do heavy streaming,..." Read more
Customers appreciate the NAS system's extensive software support, with a wide range of apps available for installation, including both Synology and third-party options.
"...The app store has everything a rookie or experienced developer would want on their server, with support for PhPMyAdmin, Docker, Mail Server, Apache,..." Read more
"...Each of the apps are clean and pretty easy to use. the DS Video app gives you that same Netflix look and feel I mentioned earlier...." Read more
"...This nas comes with tons of software that I won't get into other than to say some is very very good and some just ok, but its there when you want..." Read more
"...I like the robust capabilities and features and dependability of Synology NAS. Synology does a good job keeping everything updated too...." Read more
Customers find the NAS system excellent for home and small business use, with one customer specifically mentioning it works well as a Plex server.
"...seamlessly with Plex which is an extremely popular and powerful home media streaming tool that I know is the reason for a lot of people looking at..." Read more
"...This is a great entry NAS." Read more
"...Otherwise loving this thing its great for running VMs, Plex, using as a DVR for a home security system, great for sharing files easily locally or..." Read more
"...But I probably most impressed with the media capabilities, which was an unexpected and unintended benefit...." Read more
Customers appreciate the NAS device's storage capacity, noting it serves as a network storage solution and backup for home computers, with one customer specifically mentioning its suitability for storing 4K videos.
"...to get me started and help teach me more about networking and networked storage. Setup:..." Read more
"...It came up clean & showed the extra memory. Life is good. Next day the unit is off. Logs showed "improper shutdown". Ok...." Read more
"...recommend it for storing photos, videos, laptop backups and storing documents. Its easy to install and work with and its easy to use...." Read more
"...The drive bays are easily accessible. Additional memory is installed inside the unit and the slot is accessible inside the drive bays...." Read more
Reviews with images

It's durable.
Top reviews from the United States
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- Reviewed in the United States on April 22, 2019I think a product of this caliber and complexity warrants a lengthy review so don't expect this to be short and sweet.
I was looking for a NAS for home use and for awhile was thinking about building my own. That endeavor was a little bit too much for me at the time so I decided to find a prebuilt solution. It turns out that this unit was exactly what I needed to get me started and help teach me more about networking and networked storage.
Setup:
Out of the box, the Synology DS918+ is pretty lightweight but it feels sturdy enough. The case is made of a durable plastic that doesn't feel cheap per se but it does feel like plastic so nothing special. The design is sleek and attractive though and despite me being a fully fledged dweeb, I appreciate that it looks a lot less "aggressive" and "techy" than some other NAS's on the market.
I purchased WD Red NAS drives for my unit and they were incredibly easy to install. The drives just clamp on to the trays and slide in. That simple.
Connecting the device was as easy as plugging in power and ethernet. The whole unit has less than a 50watt TDP which is REMARKABLE if you ask me. The unit also runs quiet as a mouse. I can have it right on my desk next to my Microphone and it doesn't pick it up at all. I wouldnt know it was on if it weren't for the LED's.
Now getting into the meat of things. Actually setting it up. Once you boot it up and have it networked, you go to the Synology website, create an account, and it walks you through everything. You may have to download and install the discovery tool but it's lightweight and you will never need it once you're set up so you can uninstall it right after. Not that big of a deal for me.
The walk-through is incredibly simple. Even people who struggle to operate a television remote could follow along with their guide. It takes you through getting the drives ready, naming the device, network discovery settings, the whole kit and kaboodle. Keep in mind that formatting the drives and preparing them for RAID will probably take you a couple of hours or more.
Features:
So what can this thing do? Well for me it does everything that I need it to do and more. On top of that, it makes doing those things easy and my curiosity in the more complicated things it can do has only helped me learn and refine my networking knowledge and experience which is very valuable to me as a newbie in my IT career.
First and foremost, the RAID set up. One of the things that was extremely attractive to me was Synology's Hybrid RAID. This allows users to throw in any hardrive of any size they want for their RAID array which is NOT something conventional RAID would ever allow you to do. Even an experienced tech guru might find this feature attractive against building and managing their own NAS. The unit also supports conventional RAID 1,2 and 5.
On top of that, creating and managing user accounts so other people can use your device is a breeze. Something that normally would not be if you were thinking about incorporating Active Directory and folder permissions into a server that you had built yourself. Using Synology's proprietary solution essentially taught me how this architecture works while saving me time from actually doing it at home which is FANTASTIC.
I started off in IT as a web developer and this little NAS actually served a purpose to that end which I was not expecting. The app store has everything a rookie or experienced developer would want on their server, with support for PhPMyAdmin, Docker, Mail Server, Apache, Joomla, NODE.Js, ect. bundled and organized right on your NAS. This is awesome and I love playing around with all of these features in an easily managed environment.
It also works seamlessly with Plex which is an extremely popular and powerful home media streaming tool that I know is the reason for a lot of people looking at these units. I also use it to stream my music library to Foobar on other devices and it works wonderfully for that as well.
The QuickConnect feature also allows you to share your NAS online which is awesome. Though the less robust approach of configuring port forwarding for specific applications was a bit of a challenge to me at first, it also proved to be pretty easy compared to other things that I have worked on since I bought this unit.
The dashboard also features real time tracking of network traffic, CPU/RAM usage, users and storage health which is awesome.
One last note before the final thoughts, this product has really good documentation behind it. Any issues that I have had setting up the more complicated features on this unit were easily found on the online forums and communities for Synology. This made otherwise tedious techy jargon really easy to find and digest, and again, helped me learn a lot about NAS's, servers, and networking to where I feel confident I could build my own in the future.
Final thoughts:
I have had this unit for roughly 8-9 months now and it has not given me any issues. It runs perfectly all the time, my data feels safe and secure, the features are plenty, and it saves me a lot of time that a custom server would not have whenever I want to make changes or learn something new about serving files and networking. I am hoping this product lasts me a very long time and I feel confident in believing that it will. When I look to expand my storage yet again for my insanely large library of media and files, I will be looking at what Synology has to offer first.
Update July 2021:
Wow it has already been 5 years since I purchased this thing. How time flies!
It is still operating the same as it was when I first bought it. This thing is a champion. I have done almost everything imaginable with this thing. I've played around with about 65% of the offered packages for it, docker, endpoint analytics, mail server, you name it, dhcp, node, the list goes on. It still runs quiet and fast. Never had any issues, failure, or concerns for that matter. It's about time to upgrade it's capacity again and I am confident it will handle it just fine. Also, since purchasing this, I have learned a LOT. I was able to teach myself so much about administration and infrastructure because of this simple little device and have developed an IT career because of it. If you are an budding admin or just an average Joe that wants to play around with Plex or store your photos and documents on your network, just get one.
- Reviewed in the United States on June 25, 2018Let me just start by saying that I work in IT but have very limited experience working with NAS which I will get into and please excuse my horrible grammar.
Where to start, I love this NAS it has so many features. I have been looking for an NAS for a while now and originally went with the WD My Cloud Ultra EX2 which was great for the price, but didn’t have enough functionality/customization and I ended up returning it after the first two weeks, you can see my full review here:
https://www.amazon.com/gp/review/R8PN85WLZ812R?ref=pf_ov_at_pdctrvw_srp
At the same time I was looking at the WD I was looking at the Netgear ReadyNAS 422, but wasn’t really impressed with the cloud and iOS apps functionality. When I decided to return the WD I looked around the web to find alternatives to the 422 since I wasn’t really impressed by it, then I saw some professional reviews and saw the the DS218+. The thing that really caught my eye was the copy button, but after researching some more, I really liked the Synology DSM or Disk Station Manager, which for those that don’t know is the name of the operating system. It felt like you were working on an actual computer running linux, a lot of customization, and the ability to work on your documents through your browser without downloading and uploading them again. I knew that there would be more of a learning curve with the Synology, but they met my user guide requirements which WD could not, to break down what I mean by user guide requirements. Synology had a ton of user manuals, how to guides, a large community which was willing to help noobies(me), and their support was very quick to reply to my questions (most if not all questions where answered same day by email!) When I was looking I was originally going to go with the DS218+ since it was exactly what I needed and wasn’t that much more expensive than the ReadyNAS 422, but decided to go with the DS718+ for it’s expand-ability, for those that don’t know the difference between the 218+ and 718+, the DS718+ has two Ethernet ports (which for me didn’t matter), it had a Quad Core Processor, and the biggest reason it had the ability to be used with an expansion unit so that you can add an additional five drives into one volume. I heard that the 218+ can use the expansion unit too, but it would show up as a separate volume, I’m not sure if this is true or not but it sounds likely. Beware though the Synology took a lot longer to set up than the WD, but the benefits definitely outweigh the negatives. For those interested in testing it out before purchasing Synology has a demo of the DSM on their website. Also to note on my Mac I’ve noticed a much more fluid experience using the DSM on Chrome over Safari.
Anyway for the Break Down of Pros VS Cons:
+Super Customizable
+Computer Like UI
+More Like a Server than a NAS
+Great User Tools, ie support, guides, community
+Expandable Unit and RAM
+A lot of Apps
+Many Cloud options
+Free Custom Domain (Ends in synology.me)
+Solid construction
+2 Step Verification
-Expensive
-Lock and Key feel cheap
-Synology RAM is expensive compared to other RAM brands
-No Drive app for Apple TV, this won’t bother most, but I prefer to navigate using the folders over a Media app solution. It would also be nice to view powerpoints directly from Drive over Airplay. Not important if you are on a local network since you could just use an app that uses SMB, I personally use FileExplorer TV but would prefer Drive support for Apple TV and while we’re at it Xbox
-Due to customability setup takes more time
-No ability to hide certain Volumes, ie external hard drive used as backup
-System always seems to be indexing (haven’t really figured out what this is for yet, it seems to have to do with the ability to search for files, but it shouldn’t be indexing if no changes are made)
-Synology Drive opens in a new window instead of in DSM
-Haven’t found a use for USB copy yet
-Steep learning curve for beginners