Should you buy the 2-Bay DS718+ or the 4-Bay DS918+?
Both devices are the fully feature 2017/18 NAS series from Synology and both have received excellent reviews. On the face of it, the only difference is that one of them holds two Hard Drives and the other four. But in reality, the difference is far, far more! So, today we want to take a closer look at both of these devices and work out which one deserves your data
What can I expect from a Synology DS918+ or DS718+ NAS?
As mentioned, these two NAS server devices are the top of the line Diskstation NAS devices from Synology. They are able to perform and be used in the most current and popular network attached storage needs. Everything from Media to office files, from home to business and from home to abroad, both the DS718+ and the DS918+ can do almost any NAS task you demand of them. So whichever device you choose, rest assured that you will have a NAS that can do any and all of the following:
- Arrive with the latest DSM Synology Software, accessible from mobile and desktop devices
- Both units feature the Intel Celeron J3455 Quad Core CPU and DDR3L memory – so most NAS tasks can be performed with ease
- BTRFS and EXT 4 File systems
- Support for RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 and the always popular and adaptable SHR (Synology Hybrid RAID).
- Host a virtualization Platform – setup and run multiple VMs, supporting multiple Operating systems and enhanced by the Docker app, Container Station and the Synology Virtual Machine Manager
- Personal and business software applications included free like Synology Office (docs, spreadsheets, pdfs, etc), Synology LiveChat, Synology Mail, Photo Station, Video Station, Music Station, Download Station and more
- New Applications like Synology Moments, Synology Drive and more releasing soon
- Both units cab be used as a 1080p Plex Media Server
- Both can transcode and play 4K Media to your TV, PC, Mobile and more
- Serve as a cross-platform service – bridging connections and transfers of files between Mac and Windows systems over the network
- Heavily support backups, archiving, remote replication and comprehensive snapshot technology meaning you will have an equal amount of backup options whichever you go for. As well as migration, connection and interaction with existing cloud services like dropbox, Google Drive, ElephantDrive and Synology C2
- Create a comprehensive Surveillance solutions, supporting multiple IP cameras and even arriving with some licences included
- Both units feature 2x LAN ports so you can double up your upload and download speeds in the device if you have a LAG (Link Aggregation) or Port Trunking supported Switch or Router
- Both feature SSD Caching with the installing of an SSD Drive, though only the DS918+ will let you use an NVMe superfast m.2 SSD
- Both can be expanded by an additional 5 Hard Drives with the DX517 5-Bay expansion device
- With a price difference of only around £100, they are very similar in price
- Both units arrive with 3 Years manufacturers warranty
- Both units are compatible with the very latest 12TB NAS Ironwolf Hard Drives and those of the WD Red NAS Drive range
As you can see, whether you buy the Synology DS918+ or DS718+ NAS, you are still going to have a high spec and powerful NAS server.
What is the Synology DS918+ Diskstation NAS and Why should you buy it?
Released in mid September 2017, the Synology DS918+ NAS is widely regarded as one of the most game-changing devices synology has released yet. Featuring pretty impressive hardare specs inside:
This feature alone almost completely justifies the extra £100 spend. However given the 4GB of DDR3L over the 2GB that the DS718+ arrives with, as well as the 2 extra Hard Drive bays (which you do not need to fully populate from day one – either of these devices can run on a single HDD if needed), for me going for the DS918+ is a no brainer and wins.
What are the PROs and CONs of the DS918+?
So, what are the advantages and disadvantages of the DS918+:
DESIGN – With a newly created chassis released with improved ventilation, but still managing to keep compact (even introducing new hardware inside) this is by FAR the best Synology design yet. A welcome improvement to the old DS916+ chassis.
FEATURES – The Synology DS918+ NAS will do it all. If you need a NAS to watch and transcode 4K, Run several VMs, Apple time machine backups, host a plex media server, run an itunes server, run a business from, run surveillance cameras over the network, provide a CRM and CMS system, as well as host several websites – The DS918+ is the NAS server for you
PERFORMANCE – Easily one of the best performing Synology NAS devices available for home and small business users. Also if the default hardware isn’t enough, this is the easiest to upgrade, featuring RAM upgrades and NVMe slots
VALUE – This could possible be the best NAS of the year. We still have a couple of months before we can truly decide, but for this price and the HUGE amount of software and hardware option in the price threshold make it irresistible.
DESIGN – The two rear fans, though fully controllable, cannot be completely switched off and this may annoy some people. However any noise they make on their lowest setting is still lower than the HDD you have installed.
FEATURES – Although it can do many of these tasks at once, if you need to do ALL of them at once, you will need a solid Intel Xeon at the least.
PERFORMANCE – Only fault I can find is that there is no 8GB Default version available to buy, as you found with the DS918+ (8GB).
VALUE – It is a shame that there is no 8-Bay option with this hardware – as the DS1817+ is rather disappointing by Comparison
Synology DS718+ Diskstation NAS, Why should you buy it?
The Synology DS718+ is a fantastic 2-Bay NAS that arrives powerful and gives you the potential to upgrade at a later date. If the DS918+ had now arrived, it would have easily been in my top 3 NAS server devices of 2017. The Specs are eerily similar to that of the DS918+:
However, as mentioned earlier, the KEY difference is where the DS918+ Hardware continues to give more from day one. The DS718+ consumes less power, is smaller and more compact and makes a little less noise due to the more contained chassis. These are more associative benefits and will be more attractive to a certain NAS buyer, however it is just hard to ignore the extras you get with the DS918:
- Those NVMe SSD Upgrade slots
- The ability to officially upgrade to 8GB compared with 6GB on the DS718+
- Those two extra HDD Bays and the RAID options it opens up
The New DS718+ NAS from Synology was released in Late September 2017 and arrived alongside a number of high-profile Diskstation NAS. Check out our unboxing below:
What are the Pros and Cons of the Synology DS718+?
DESIGN – Keeping the older chassis from the previous unit DS716+II is a smart move. The result is that costs are being kept VERY close to that of the previous unit. It is both compact, cool and quiet (though the noise of the drives should always be kept into consideration)
FEATURES – BY FAR the most powerful and able 2-Bay from Synology and at this price level, it is VERY hard to beat. It can do EVERYTHING – Trancode 4K, Run as a Plex Media Server with transcoding, host a few virtual machines, store images in apple time machine – every thing most people need a NAS for, this unit can do it
PERFORMANCE – Alongside the ability to perform all of the tasks you need from a NAS server in 2017 and 2018, you will have the high-speed of read and write from the dual LAN ports. As well as supporting both the BTRFS files system and the SHR configuration – both of which vastly improve your performance and integrity of your data
VALUE – Easily one of the best NAS servers of 2017. It has the power, the price and the compact size to fulfil your NAS needs and provide an ample storage solution.
DESIGN – Still not sure why they didn’t update the chassis, as they have done with the DS218+
FEATURES – As it is just a 2-Bay, you will need to buy the DX517 to expand to higher than 2 HDD/SSD. If you need more than 2 bays for immediate storage, go for the DS918+
PERFORMANCE – The RAM can only be expanded to 6GB – As opposed to 8GB as you might expect. The 4GB Memory upgrade is available from Synology, but still a shame you cannot officially exceed the 6GB Memory
VALUE – The only real negative for me was that the price is only £60-70 lower than the DS918+ 4-Bay, which features NVMe SSD storage on top and 4GB of goes upto 8GB.
| Synology DS718+ NAS
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Synology DS918+ NAS
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| CPU | ||
| CPU Model | Intel Celeron J3455 | Intel Celeron J3455 |
| CPU Benchmark | 2162 | 2162 |
| CPU Architecture | 64-bit | 64-bit |
| CPU Frequency | Quad Core 1.5 burst up to 2.3 GHz | Quad Core 1.5 burst up to 2.3 GHz |
| Hardware Encryption Engine | YES | YES |
| Hardware Encryption Engine (AES-NI) | YES | YES |
| Hardware Transcoding Engine | H.264 (AVC), H.265 (HEVC), MPEG-2 and VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30 | H.264 (AVC), H.265 (HEVC), MPEG-2 and VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30 |
| Memory | ||
| System Memory | 2 GB DDR3L | 4 GB DDR3L |
| Memory Module Pre-installed | 2GB (1 x 2GB) | 4GB (1 x 4GB) |
| Total Memory Slots | 2 | 2 |
| Memory Expandable up to | 6 GB (2 GB + 4 GB) | 8 GB (4 GB x 2) |
| Storage | ||
| Drive Bays | 2 | 4 |
| Maximum Drive Bays with Expansion Unit | 7 | 9 |
| M.2 Drive Slots | 2 | |
| Compatible Drive Type* (See all supported drives) |
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| Maximum Internal Raw Capacity | 20 TB (10 TB drive x 2) (Capacity may vary by RAID types) | 40 TB (10 TB drive x 4) (Capacity may vary by RAID types) |
| Maximum Raw Capacity with Expansion Units | 70 TB (10 TB drive x 7) (Capacity may vary by RAID types) | 90 TB (10 TB drive x 9) (Capacity may vary by RAID types) |
| Maximum Single Volume Size |
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| Hot Swappable Drive | ||
| External Ports | ||
| RJ-45 1GbE LAN Port | 2 (with Link Aggregation / Failover support) | 2 (with Link Aggregation / Failover support) |
| USB 3.0 Port | 3 | 2 |
| eSATA Port | 1 | 1 |
| Expansion Port | YES | YES |
| USBCopy | YES | NO |
| File System | ||
| Internal Drives |
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| External Drives |
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| Notes |
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| Appearance | ||
| Size (Height x Width x Depth) | 157 mm x 103.5 mm x 232 mm | 166 mm x 199 mm x 223 mm |
| Weight | 1.74 kg | 2.28 kg |
| Others | ||
| System Fan | 92 mm x 92 mm x 1 pcs | 92 mm x 92 mm x 2 pcs |
| Fan Speed Mode |
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| Noise Level* | 18.4 dB(A) | 19.8 dB(A) |
| Scheduled Power On/Off | YES | YES |
| Wake on LAN/WAN | YES | YES |
| Power Supply Unit / Adapter | 65W | 100W |
| AC Input Power Voltage | 100V to 240V AC | 100V to 240V AC |
| Power Frequency | 50/60 Hz, Single Phase | 50/60 Hz, Single Phase |
| Power Consumption* | 20.1 W (Access) 9.1 W (HDD Hibernation) |
28.8 W (Access) 12.6 W (HDD Hibernation) |
| British Thermal Unit | 68.58 BTU/hr (Access) 31.05 BTU/hr (HDD Hibernation) |
98.27 BTU/hr (Access) 42.99 BTU/hr (HDD Hibernation) |
| Warranty | 3 Years | 3 Years |
| Supported RAID Type |
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| RAID Migration |
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| Volume Expansion with Larger HDDs |
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| Volume Expansion by Adding a HDD |
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| Global Hot Spare Supported RAID Type |
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| Surveillance Station | ||
| Maximum IP cam (Licenses required) | 40 (including 2 Free License) (See All Supported IP Cameras) | 40 (including 2 Free License) (See All Supported IP Cameras) |
| Total FPS (H.264)* | 1200 FPS @ 720p (1280×720) 800 FPS @ 1080p (1920×1080) 350 FPS @ 3M (2048×1536) 280 FPS @ 5M (2591×1944) 170 FPS @ 4K (3840×2160) |
1200 FPS @ 720p (1280×720) 840 FPS @ 1080p (1920×1080) 400 FPS @ 3M (2048×1536) 300 FPS @ 5M (2591×1944) 180 FPS @ 4K (3840×2160) |
| Total FPS (MJPEG)* | 450 FPS @ 720p (1280×720) 250 FPS @ 1080p (1920×1080) 200 FPS @ 3M (2048×1536) 100 FPS @ 5M (2591×1944) |
480 FPS @ 720p (1280×720) 400 FPS @ 1080p (1920×1080) 330 FPS @ 3M (2048×1536) 200 FPS @ 5M (2591×1944) |
| Total FPS (H.265)* | 1200 FPS @ 720p (1280×720) 1200 FPS @ 1080p (1920×1080) 600 FPS @ 3M (2048×1536) 480 FPS @ 5M (2591×1944) 200 FPS @ 4K (3840×2160) |
1200 FPS @ 720p (1280×720) 1200 FPS @ 1080p (1920×1080) 600 FPS @ 3M (2048×1536) 400 FPS @ 5M (2591×1944) 300 FPS @ 4K (3840×2160) |
| Video Station | ||
| Video Transcoding | 4K Group 1 (See more) | 4K Group 1 (See more) |
| Maximum Transcoding Channel Number |
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