Synology’s DiskStation DS220+ comes with 2GB of DDR4 RAM preinstalled but it’s possible to bump this up to 6GB. The slot is easily accessed inside the enclosure itself and this guide will show you what you’ll need and how to install the module. Want to make your DS220+ even faster? You’ve come to the right place!
What RAM is supported by Synology DS220+?
The Synology DiskStation DS220+ has an Intel Celeron J4025 processor, which supports DDR4 RAM. The memory support for DDR4/LPDDR4 can hit transfer speeds of up to 2400 MT/s, though, like desktop-class RAM, it’s possible to go beyond this.
Synology officially supports the use of its own RAM with the D4NESO-2666-4G module being the only real choice available since the NAS supports up to 6GB, including the 2GB of preinstalled memory.
It’s possible to use non-branded RAM, but Synology likely wouldn’t offer support. Therefore, while the official RAM is considerably more expensive, having peace of mind may be worth the extra cost with one of the best NAS around.
Best RAM for Synology DS220+

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.
How to install RAM in Synology DS220+
- Power down the Synology DiskStation DS220+.
- 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.
These steps are optional but highly recommended.
- Open up Synology Assistant.
- Click the cog icon in the top-right.
- Enable “Memory test”.
- Right-click the Synology DiskStation DS220+ on the list to start the memory test.