After trying VMs and Containers, I see the purpose to max out the memory in my NAS.
I know some things are better than others with a reasonable toll. What I see now.
I need 2x16GB ECC
Synology D4ES01-16G DDR4 2666MHz ECC Unbuffered CL19 - $350
A-Tech DDR4 2666MHz PC4-21300 ECC Unbuffered 2Rx8 1.2V - $75
v-Color DDR4 2666MHz (PC4-21300) ECC CL19 1.2V - $75
QNAP DDR4 2666MHz ECC - $300
For the number of available memory slots (per my understanding), there is no big difference in usage unbuffered vs registered, the only difference the latter is less expensive. Looking at the prices, I cannot understand x4 price difference.
Did anyone try to put 64GB (2x32GB) into DS923+?
My dilemma is that going with A-Tech I can use a reminder for APC Smart-UPS SMT1500C.