The purpose of this blog post (the fifth in my Synology series) is to provide the guidance and the steps needed to install two Synology SNV3400-800G NVMe drives for the Synology DS920+.
– I powered OFF the Synology DS920+ and removed the covers from the bottom of the unit. Next, I installed the two Synology SNV3400-800G NVMe drives and then placed the covers back on.
Synology DS920+ NVMe Covers 
Synology SNV3400-800G NVMe drives
– I powered ON my Synology DS920+, logged into the Synology interface and double clicked on Storage Manager. Once the Synology Storage Manager window opens, then select SSD Cache followed by Create.
Synology Desktop Interface 
Synology Storage Manager
– Select your desired Cache Mode. For the purpose of this guide, I selected Read-Write Cache. On the following screen, please tick both boxes to for the NVMe that were installed. In this example, I installed two NVMe drives so I ticked both boxes.
Cache Mode 
Cache Creation Wizard
– Select your desired RAID type. For the purpose of this guide, I selected RAID 1. On the SSD Cache configuration window, please select Apply.
RAID Options 
SSD Cache Configuration
Warning 
Loading SSD Cache
SSD Cache Mounting 
Healthy Status
This concludes this blog post, please be on the lookout for more in the future. Also, please checkout similar blog posts on the Synology NAS series from Chris Childerhose, Anwar Khan, and Ian Anderson.
If you’re interested in learning more about the DS920+, I would highly recommend contacting Synology using the Media Inquiry form.
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