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The Synology DS218+ is an evolution of the DS218 that came close to scooping a Recommended award the last time we reviewed it. In fact, the physical design is virtually identical, and the differences come down to the interior spec. While the DS218 is based on a Realtek quad-core CPU, backed up by 2GB of RAM, the plus model features a dual-core Intel Celeron J3355, giving it some extra grunt. Given that performance was roughly the only thing that let the DS218 down, this is definitely a step in the right direction. 

The design, as is so often the case with Synology, is smart, functional and understated. The two drive bays are concealed underneath a magnetic flap, while the drives slide out smoothly in tool-less plastic caddies, which attach via clip-on side plates rather than screws. You genuinely can remove and fit a drive within five minutes (we timed it) making populating the DS218+ a breeze. And even with the presence of a 92mm fan at the back of the chassis, the solid, rattle-free construction helps keep the Synology relatively quiet. The manufacturer claims 19.3dB in operation, and it’s certainly one of the quietest NAS drives we’ve used.

In terms of connectivity, it’s basic, with a single USB 3 port at the front for easy backups to an external HDD, along with two more USB 3 ports at the rear. There’s also an eSATA port, but while the one on the DS1019+ will support an additional Synology expansion unit, this one just supports an external drive. Moreover, as with most mainstream two-bay units, there’s just a single Gigabit Ethernet, taking any kind of link aggregation off the menu.

Synology aced easy setup long ago – to the extent that many other NAS manufacturers now follow the same basic process. You connect through a web page, which finds your NAS device, and from there it’s a matter of downloading and installing the latest DSM software before configuring the storage pool and installing your first bunch of apps. 

If you can manage a Windows desktop or – better still – have some experience of a good Linux distro, there’s really nothing here that’s going to rattle you, with all the major management tools exactly where you’d expect them, easy-access dashboards for monitoring and an accessible app store for discovering and installing apps.

Synology’s own apps cover all of the basics, including file-sync, media management and streaming and backup. Yet, while it’s smaller and cheaper than the beefy DS1019+, the DS218+ can still run most of the same apps and take on a similarly wide range of tasks. Many of Synology’s apps mirror cloud services you would expect from either Microsoft or – particularly – Google, so if you want chat, synced folders, a collaborative office suite, email and even photo management and sharing, you can have it from just one small box on your local network. And if you’re more concerned about data protection, the Synology DS218+’s Btrfs file system gives you snapshotting with file or folder-level restoration.

What’s more impressive is that the DS218+ has the horsepower to run these applications for a family or a small team of people, although you might be pushing it expecting it to so for a whole office. With the enhanced spec comes much improved file transfer performance, plus additional capabilities such as on-the-fly 4K transcoding. In our tests, it was consistently amongst the top performers, both for the kind of sequential file transfer tasks you would get when copying large video files and for more complex, granular tasks such as backing up a directory full of documents and photos. The DS218+ also delivered high levels of performance while streaming 4K video, although the playback on the other end was choppy, to say the least. 

With the same plus points as the DS218 combined with stronger performance, it’s not hard to recommend the DS218+. For some users the Asustor AS5304T will be an even stronger choice, but it’s also more expensive – and you might not need or want its additional features. As far as mainstream, two-bay NAS goes, the DS218+ is the one to beat. 

Synology DS218+ specifications

Model number


Price (inc VAT)

£242 (£290)


2yr RTB

Dimensions (WDH)

108 x 232.2 x 165mm

Noise level



Intel Celeron J3355

CPU cores

Dual core

CPU speed, cores

2GHz to 2.5GHz

RAM/maximum RAM


Bays (free)

2 (2)

Drive type

3.5in hard disk/2.5in hard disk

Max internal capacity


RAID modes

SHR, JBOD, 0, 1

Bay type

Slide-in caddy

Hot swap?


2.5in drives supported


SSD support


Status display

6 x status LEDs

Gigabit Ethernet ports


10GB Ethernet ports


USB ports (rear)

2 x USB 3

USB ports (front)




802.3ad link aggregation


Load balancing

Not applicable

Network failover

Not applicable

Major network protocols


iSCSI target


USB expansion options


NAS OS/firmware

Synology DiskStation Manager

Main desktop software

Synology DiskStation Manager

Remote access

Cloud Station Drive, Cloud Station Sharesync

Cloud integration

iDrive, Elephant Drive


Acronis TrueImage, Active Backup, Glacier Backup, Hyper Backup


Audio Station, Video Station, Memories, iTunes Server, MinimServer, Plesk, Logitech Media Server,


Surveillance Station

Testing and Development

Docker, Java, Node.js, PHP, Perl, Python, Ruby, GitLab

Other major services

Drupal, Magento, MailPlus, Moodle, Synology Office, Virtual Machine Manager, Chat Server

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