Although the Synology NAS memory upgrade process is very easy, it is also very easy to get wrong! It is worth remembering the following points

However, if you’re looking for other options, there are community-tested RAM upgrades that are also compatible with the DS423+. These upgrades are unofficial, but they have been tested by the NAS community and have shown to work on the device. Here are some of the RAM upgrades that have been tested: Optional Synology memory modules are designed to expand the memory of your Synology NAS. Follow the TimeTec 16GB – Timetec Hynix DDR4 2666MHz PC4-21300 Unbuffered Non-ECC 1.2V CL19 1Rx8 Single Rank 260 Pin SODIMM Laptop Notebook Computer Memory RAM Module Upgrade (16GB) a Align the small gap between the gold connectors of the memory module with the notch on the empty slot.

UDIMM

Note: I would like to emphasize the fact that it’s not a good idea at all to open up your NAS with a screwdriver to upgrade your RAM because you can’t in this model. What this will do is cause you to lose your warranty on an already great product. It’s best to just use the free RAM slot in the front. This change of mind return policy is in addition to, and does not affect your rights under the Australian Consumer Law including any rights you may have in respect of faulty items.

DDR4 – A Newer and high-frequency memory that is available to more modern CPU that runs at between 2133Mhz and 2400Mhz DS720+ = CPU Intel Celeron J4125 = Supports 8 GB RAM ( Synology says Maximum Memory Capacity 6 GB) ( Intel says Maximum Memory Capacity 8 GB). Blogs and forums recommend the 16 GB or 8 GB RAM from Crucial. However, some users have shared with me that the Crucial CL19 RAM memory has some incompatibility issues with the original preinstalled memory on the DS720+ NAS. It would appear that the Crucial memory does not always read SSD-NVMe M.2 cache. Also, DSM will show a notification listing the Crucial or HyperX RAM as non official at every start up/reboot. The notification will say:The Synology DS423+ is a powerful and reliable NAS device that is designed for small and medium-sized businesses. It comes with 2 GB of DDR4 non-ECC memory, with 2 GB of it soldered to the board, and one memory slot available for upgrades. The maximum memory capacity is 6 GB, which means that you can add an additional 4 GB to the pre-installed 2 GB. Note: mariushosting is not responsible for any malfunctions that may result from the instructions given above. The tests are done exclusively by me and I like to share them with the rest of the world. What happens if I install more RAM than the CPU processor can support? The excess RAM will never be used. There are people on YouTube and Forums who have unknowingly and naively installed 16 GB of RAM in their Synology DS720+ and DS220+ but they do not understand that the processor will never use the excess memory. Even if their system detects 16 GB of memory, it will never be used by their CPU. The Celeron J4125 CPU installed on DS720+ can support up to 8 GB of RAM. Synology recommends installing a maximum of 6 GB RAM but they don’t offer any explanation as to why only 6, despite the processor supporting 8 GB without any issue (according to Intel, the manufacturer). Shut down your Synology NAS. Disconnect all cables from your Synology NAS to prevent possible damage.

So, you have decided to upgrade the Memory/RAM on your Synology NAS. It is worth mentioning that different NAS drives require different memory types. All too often there are factors that are as follows:The Synology DiskStation DS220+ is a very powerful mid-range NAS enclosure. Not only does it come with an Intel processor and two drive bays, but it also has upgradable DDR4 RAM. This allows one to bump the 2 GB preinstalled capacity to a total of 6 GB. How to upgrade RAM in Synology DiskStation DS220+