It’s easy to upgrade RAM on Synology DiskStation DS720+. All that it takes is the removal of the two drive bays to gain access to the available memory slot. This requires but a few moments to achieve without any tools, making upgrading the capacity of your enclosure a must-do task.
How to upgrade RAM on Synology DiskStation DS720+
Installing an additional RAM module inside the Synology DiskStation DS420 is incredibly straightforward. This guide will have you up and running in a few moments.
- Power down the Synology DiskStation DS720+.
- Take out the two hard drive bays.
- The RAM slot is located on the side where the power button is.
- Take out the newly purchased RAM from its packaging.
- Carefully insert the module into the slot, matching the notch to that on the module.
- Re-insert the hard drive bays.
With the new RAM module installed, I’d highly recommend following these optional steps to run a memory test:
- Open up Synology Assistant.
- Click the cog icon in the top-right.
- Enable “Memory test”.
- Right-click the Synology DiskStation DS420+ on the list to start the memory test.
Should this test be complete without issue, you’re good to go! Even the best NAS out there can take advantage of a RAM upgrade. Running 6GB instead of 2GB can improve performance in intensive applications, as well as system responsiveness, especially with multiple users accessing data simultaneously.
When it comes to choosing a module to install inside your Synology DiskStation DS720+, there are a few options to pick from. I’d recommend going with Synology’s own branded module that’s officially supported on this NAS. You could choose a more affordable RAM module but there’s a possibility it may not be supported.

Synology RAM (D4NESO-2666-4G)
This official RAM upgrade kit from Synology ensures your NAS will be running at full potential without any concern of incompatibility. It’s just a little on the expensive side.