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Crucial CT16G4SFD824A RAM doesn’t work in the Synology DS1819+

I recently bought two sticks of Crucial 16GB DDR4-2400 SODIMM 1.2V CL17 non-ECC RAM (CT16G4SFD824A) hoping that I could upgrade my Synology DS1819+ from 4GB to 32GB. Unfortunately, when both sticks of the RAM are installed, the NAS doesn’t boot, and instead simply blinks the power light indefinitely (even after waiting 45min).

I did find that when I installed one 16GB stick alongside the existing 4GB stick, the system would boot, recognize the stick and report 20GB of RAM, but it also gave the warning about non-Synology RAM. I’m guessing this is because the RAM I purchased was non-ECC, whereas the Synology RAM is ECC.

For now, I’m returning to my 4GB configuration.