Synology DS1517+ and DS1618+ Compared Head to Head

Synology DS1517+ vs DS1618+ Head to Head

Synology is known for their Desktop NAS solutions and the DS15xx 5-bay has evolved generations to the current DS1517+. I think to say they have most probably been the best 5-bay NAS in this category would not be too far off the mark. Solid, reliable and not bad on the performance scale either, the 5-bay from Synology has won many accolades and with higher disk capacities being announced every year, the DS15xx had extended its life cycle.

It appears Synology are having a shift in its desktop bay strategy, the solidification of the 4-bay with its delectable DS-918+, which has an excellent turn of performance and is fast becoming one of the best 4-bays on the market, to the DS1517+ – 5-bay, and now the new DS1618+ 6-bay with the current DS1817+ 8-bay and the 12-bay DS2415+ , these are all the models in the “plus” range designed for home and small businesses.

So, we decided to lift the hood of the DS1517+ and the new DS1618+ to take a look at exactly what these offer as 5 and 6-bay NAS servers.

Choosing the right DiskStation is an important aspect of setting up a networking system. If one chooses a DiskStation that has insufficient memory or performance, it may be plagued with sluggish computing and a lack of room for all the information that needs to be maintained. On the other hand, if a DiskStation with significantly more memory, performance, and scalability is purchased, it’s possible to overpay for a product that has more than what is needed. Here’s a look at these two high-quality DiskStations: the DS1517+ and the DS1618+.

The DS1517+

The Synology DiskStation DS1517+ is a NAS powered by a quad-core 2.4 GHz CPU. It contains 5 bays and comes with AES-NI hardware encryption. The 1GbE LAN ports allow the DS1517+ to be installed with multiple network interfaces which can increase speed and performance. In terms of memory, the 1517+ has 2GB/8GB DDR3 and up to 16GB of dual channel. The 1,165 MB/s sequential reading performance helps provide the speed and power many businesses need. As a company continues to grow, the DS1517+ can be scaled up with up to 15 drives using the DX517 expansion units.

  • Older model means more affordability
  • Great for smaller businesses or tech enthusiasts
  • 2017 PCM Best Performance Winner
  • Older model means it will be obsolete sooner
  • Less storage capability

The DS1618+

The Synology DiskStation DS1618+ is a newer product that further expands on the capability of the DS1517+. The 1618 6-bay NAS comes with a 2.1 GHz quad-core CPU, and options to boost performance with a M.2 SSD cache or 10 GbE NIC. Hefty ram options include 4 GB DDR4 SO-DIMM with the option to expand up to 32GB.

If additional storage is needed to boost performance, the DS1618+ is equipped with a PCle expansion slot to allow card add-ins. Businesses thrive with the 1,151 MBps sequential reading performance. The 1618+ also includes flexible RAID configuration options.

  • More storage
  • Flexible RAID configuration
  • Great for small to medium businesses
  • Newer model means improvements and upgrades over the older model
  • Smaller CPU than the DS1517+
  • Newer model means higher upfront costs

Overall, both the DS1517+ and the DS1618+ are great products for businesses and tech enthusiasts alike. Both provide ample storage, high-powered CPUs, and sequential reading for snappy processing. Both are exceptional, high-quality products that can readily keep up with the demands of global businesses.
7.2 Total Score
And The Winner Is...

The Synology DS1618+ Wins it on - Price, Performance, and has the technology edge over the DS1517+.

Value for Money
Ease of Use
SMB Score
SOHO Score
User Rating: 4 (4 votes)
Synology DS1618+ Diskless 6-bay NAS Server


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  1. Good write-up helped a lot

  2. Stuart Marshall June 27, 2018 at 9:52 am

    The DS1517+ is now a little dated but seems to still be faster than the DS1618+ ?, is this true?

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