Yesterday, 12:09 PM
Regarding the memory upgrade, yes, despite Synology officially capping support at 32GB (2 x 16GB ECC), many users — including some of our own tests — have successfully installed 2 x 32GB DDR4 ECC SODIMMs for a total of 64GB. The system will typically boot and recognize the full capacity, and performance has remained stable in most real-world use cases, especially for VMs and Docker workloads.
Just make sure the memory you use is DDR4-2666 ECC SODIMM (not UDIMM or non-ECC), ideally from a reliable server-grade line like Kingston’s KSM series (e.g., KSM26SED8/32HD). Non-ECC memory often won’t boot or can lead to instability due to Synology’s stricter BIOS-level checks on the RS models. ECC is strongly recommended here.
So in your case — yes, you can absolutely try the 2 x 32GB modules, and if all goes well you can assign 32GB+ to your son’s AI VM without issue. The RS1221+ won’t complain as long as the memory matches spec and passes POST.
Just make sure the memory you use is DDR4-2666 ECC SODIMM (not UDIMM or non-ECC), ideally from a reliable server-grade line like Kingston’s KSM series (e.g., KSM26SED8/32HD). Non-ECC memory often won’t boot or can lead to instability due to Synology’s stricter BIOS-level checks on the RS models. ECC is strongly recommended here.
So in your case — yes, you can absolutely try the 2 x 32GB modules, and if all goes well you can assign 32GB+ to your son’s AI VM without issue. The RS1221+ won’t complain as long as the memory matches spec and passes POST.