Synology DS218+ vs Synology DS718+: Which should you buy?

The Synology DS218+ is recommended by Synology to be ideal for those who are new to Network Attached Storage and we have no reason to disagree here. It's perfect if you're only just starting out. Where the DS718+ differs is by allowing the use of an expansion unit for an additional five bays. That's 84 TB of storage space, which can come in handy if you plan on storing a lot of data.

Synology's DiskStation DS718+ is more powerful

Looking at the two NAS models side to side may lead you to believe they're both identical, but that's not the case. Synology hasn't made them too different, which makes the decision making much easier for the consumer. All you need to know is one can make use of a further five bays, while the other cannot. Both could be a contender for the best NAS of old.

The pricing has the DS718+ a full $100 more expensive than the DS218+, which makes sense when you consider the use case for each NAS. The latter is a simple unit with two bays — that's all you have to work with. The DS718+ throws in support for an optional expansion unit. The internals is largely the same, only the processor having two more cores in the DS718+, but you shouldn't notice much of a performance bump.

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Header Cell - Column 0 DS218+DS718+
CPUIntel Celeron J3355
Dual-core 2.0GHz
Intel Celeron J3455
Quad-core 1.5GHz
Expandable to 6 GB
2 GB
Expandable to 6 GB
Capacity24 TB24 TB + 60 TB
LAN ports12
Weight1.30 kg1.74 kg
Power60 W65 W
Warranty2 years3 years

The addition of one year for the DS718+ with its warranty also makes it worth the additional cost. That said, Synology NAS units are sturdy machines that will last way beyond the warranty period, so it's entirely down to whether you will ever need to add more capacity to your NAS.

Rich Edmonds
Senior Editor, PC Build

Rich Edmonds was formerly a Senior Editor of PC hardware at Windows Central, covering everything related to PC components and NAS. He's been involved in technology for more than a decade and knows a thing or two about the magic inside a PC chassis. You can follow him on Twitter at @RichEdmonds.