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Synology 4 bay NAS DiskStation DS918+ (Diskless)

Ships from Canada.

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  • 4GB DDR3L-1866 memory, expandable up to 8GB; Scalable up to 9 drives with Synology DX517
  • Quad-core processor with AES-NI hardware encryption engine; Dual 1GbE LAN with failover and Link Aggregation support
  • Encrypted sequential throughput at over 225 MB/s reading and 221 MB/s writing
  • Advanced file system offering 65,000 system-wide snapshots and 1,024 snapshots per shared folder
  • Dual-channel H.265/H.264 4K video transcoding on the fly. Operating temperature: 5°C to 40°C (40°F to 104°F)

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Synology DS918+ Network Storage

Powerful and scalable 4-bay NAS for growing businesses

Featuring quad-core processor with built-in AES-NI hardware encryption engine, support for Btrfs file system, and dual streams of H.265/H.264 4K video transcoding, the Synology DS918+ is ideal for small and medium-sized businesses and IT enthusiasts who want a fast, secure solution to protect and share data, as well as enjoy on-the-fly video transcoding. It also supports up to two M.2 NVME SSDs, so you can create a powerful cache system that helps reduce delay, and takes system performance to the next level.

Satisfy Your Need for Performance and Capacity

DS918+ supports up to two M.2 NVMe 2280 SSDs, allowing fast system cache creation without occupying internal drive bays. Scalable up to 9 drives with a Synology Expansion Unit DX517, DS918+ answers the need for flexible storage capacity.

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Btrfs: Next Generation Storage Efficiency

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Flexible Shared Folder/User Quota System provides comprehensive quota control on all user accounts and shared folders

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Flexible Shared Folder/User Quota System provides comprehensive quota control on all user accounts and shared folders

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Flexible Shared Folder/User Quota System provides comprehensive quota control on all user accounts and shared folders

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Automatic file self-healing detects and recovers corrupted files without user intervention

Digital Asset Protection

Powered by Synology DiskStation Manager (DSM), Synology NAS offers advanced security measures to protect against sudden data loss and potential security holes.

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Security Advisor
Analyzes system settings, password strength, network preferences, and removes any possible malware.

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AppArmor
A kernel-level enhancement that blocks malicious programs from accessing unauthorized system resources.

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AES 256-Bit Encryption
Encrypt shared folders and network data transmission to keep data from unauthorized access.

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2-Step Verification
Prevent others from logging in to your DSM by generating a one-time password (OTP) on your mobile device.

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Trust Level
Customize the trust level in Package Center to avoid installing packages from untrusted sources, safeguarding your NAS from unknown or tampered package files.

Synchronize Files across Your Devices

Cloud Station Suite provides real-time data synchronization across all your devices, such as computers, mobile devices, and other Synology NAS whenever a file is modified. "Intelliversioning" keeps the most important file versions to better utilize storage space.

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Cloud Station Sharesync

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Cloud Station Sharesync

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Cloud Station Server

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DS Cloud

4K Multimedia Server

Access and stream your 4K media content anytime and anywhere. DS918+ supports 4K H.264/H.265 online transcoding via Video Station and DS video, allowing 4K videos to be converted and played on the fly on other computers, smartphones, and media players that originally do not support Ultra HD formats.

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Powered by Synology DSM

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Surveillance Station
Complete surveillance solution for recording, monitoring, and management.

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Collaboration Suite
Synology Office, Calendar and Chat guarantee a secure and high-performance private communication and user-friendly content organization.

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All-in-one Server
Save additional investment by integrating various network services, web/mail services, management applications into your NAS.

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DSM UI
Award-winning operating system with an intuitive user interface and powerful capabilities.

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

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Security
Comprehensive built-in security tools are constantly updated to tackle evolving threats and protect your devices.


Learn more about the Synology Inc. DS918+

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 Newegg.ca's Standard Return Policy.
5/ 5
If you know what you are doing this is awesome but have realistic expectations

Pros: Energy efficient and has lots of apps available and is as reliable as it can be without ECC memory. This is also due to cost so again if you have realistic expectations it's a great capable SOHO NAS. If running in the Enterprise then only use rack mount models with ECC memory.

Cons: Unless you plan on running a lightweight VM like Debian with no GUI, it will run SLOW, but the CPU is design for energy efficiency and not performance. It does a decent job for transcoding Plex video IF you have a Plex pass so it can use Intel's quicksync which is the same throughout the family line of each gen CPU.
Also samba multichannel isn't stable outside of Synology's OS so if you implement it via SSH it's at your own risk. So even with a capable switch and server with teamed NIC's don't expect more than gigabit throughput. Running a VM for lightweight server monitoring like phpservermon is fine, but it doesn't need much resources so a weak CPU is just fine. I would NOT recommend running any of the webserver's if you need performance. Run on a separate VM on better hardware. A light WordPress site is okay but woocommerce is too heavy so run on a dedicated VM NOT on the NAS.

Overall Review: Cracking it open I see an open pcie slot but have not been able to find what I could possibly add like a 10Gb NIC but there's no room for additional cooling or for the port on the NIC without serious modifications to the case. The NVMe caching is more of a gimmick, it works but without 10Gb you can't saturate the NAS enough to see the benefit with any benchmarks. Plus of you could get a 10Gb NIC retrofitted this CPU probably wouldn't be able to saturate more than half the speed of the link.

2 out of 2 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Excellent NAS

Pros: Easy setup
Good processor and RAM size

Cons: Two application for photos and they don't speak with each other. You can use only one of them

Overall Review: I'm writing this review after a month of use. It was easy to install. Read/Write speed is good for me and it streams media to 3 different devices with no issues. Bear in mind that this is my first NAS and I don't have another to compare it to. What I noticed is that you can find lots of support online and lots of Youtube videos. I set it up to access it over the internet with my own domain name. I didn't have to open any ports on my router (used UPnP). Strong Video station app, Audio app and lots of other apps. I can't comment on virtualization and other functions as I mainly use it as large storage that I can access from anywhere. There are two applications that you can use for photos. Moments, which work very well on cell phones and has unique facial recognition feature. It doesn't stream directly to dlna. The other is Photo station, works well on cellphones too but it doesn't have the facial recognition. Each app has its own folders and you cannot use both for the same pictures unless you make two copies of each. What I did is that I used photos for the old pictures and used moments to sync my phone and back it up. Still and excellent NAS.

2 out of 2 people found this review helpful. Did you?
1/ 5
Terrible Support

Pros: Initial setup was easy enough

Cons: I own 2 4 bay synolgy Diskstations. I have had nothing but problems with their apps. Documentation is sparse. Support can't seem to help unless you give them access to you system. I'm not comfortable with giving strangers access to my computers and network. Do your own boycott of this Chinese company.

1 out of 11 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
5/ 5
Quick Setup

Pros: The setup was very simple and it was very easy to install the drives.
It has ran quiet and without interruption since startup

Cons: none yet

0 out of 1 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
5/ 5
Nice Upgrade

Pros: Nice upgrade from my 3/4 year old 2 bay. Much faster, maybe some of that do to use of an ssd for read caching only. Upgrade was easy. And for those wondering, using only two of the 4 bays is not an issue.

Cons: None.

3 out of 5 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Worked really nice, right out of the box

Pros: Handled four 8tb Seagate "archive" drives perfectly. Full format ran in background allowing disks to be used immediately. GUI was more than I expected, quite informative and powerful. Should have invested in this long ago instead of my Stardom USB3 enclosures. Streamed BluRay movie MP4 at 1080p and 5.1 no problem. Attaching one volume's shared folder in windows 10 automatically attaches the other volumes with all shared folders. Disks shut down when not used unlike some of my other external USB3 enclosures. This is a really nice product. Fans are silent and the empty ram slot is easily accessible: just pull the right most drive out and you can see the slot.

Cons: M.2 cache can be assigned to only 1 volume leaving other 3 volumes uncached. External drives were recognized if they were NTFS or fat32. As expected, only recognized 1 drive in a 5 drive port-multiplier eSata array. This was mentioned in FAQ. Did not recognize two volumes in a "JBOD RAID" enclosure but could access one drive if I pulled the other out. Did not recognize its own proprietary formatted drive if I pulled it out and attached it to the external sata connector. None of these affected my 5 star review.

Overall Review: Having problem with uBuntu 17.10 mounting volumes. Followed example for 16.04 but it didnt work. Problem is uBuntu but I dont need to access from linux anyway, just wanted to see if I could. Adding 4gb memory improved performance. Putty or ssh can be used to log in a root from windows. I created some bash scripts for use on the volumes this way.

6 out of 9 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
5/ 5
Easy installation and great performance

Pros: - Installation was a breeze. Popped in two hard drives (for now) and software configuration was easy.
- Great performance so far. I'm running a couple of media servers, Download Station, Cloud Sync, Hyper Backup and Surveillance Station and I'm nowhere near maxing out CPU and RAM.
- Great network performance
- Software interface is generally easy to use and the companion apps help get some things done easier than through the web interface when using mobile devices.

Cons: - Only two USB ports, including the one in the front. Since I have a UPS and also an external drive for backups, I ended up buying a powered USB hub.

Overall Review: I bought this to replace an Acer Aspire H340 which I had reconfigured a year ago to use Ubuntu Server. That server did not wake up after a recent power outage. I had been looking at the Synology NAS devices for a while and decided to take the plunge. After a few days, my reaction was, "Why didn't I do this before?" I loved my H340, but this is in a completely different league. File transfers from a Mac are much faster than they ever were with the H340, something that had been driving me nuts since my first day of owning a Mac. But I digress...

Tip: If you are going to use Logitech Media Server and experience slow performance, change the Package Center to show beta versions and install the latest beta. The current "release" version was incredibly slow for me and I found through the community support forums that the beta version could solve the problem. It's been rock solid so far.

Geofencing with Surveillance Station and DS Cam (for Android anyway) can be hit or miss with GPS. Seems like WiFi presence works better, but may require some tinkering with the settings. Just a heads up...

I highly recommend this NAS.

6 out of 6 people found this review helpful. Did you?
5/ 5
Great Product!

Pros: - Easy to Setup
- Operates as expected

Cons: - N/A

Overall Review: The web interface is very intuitive and easy to use. Ideal for home and small offices/buisnesses

1 out of 1 people found this review helpful. Did you?
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