Libre doesn't recognise and configure a Synology RS2212+ properly.
This particular unit also have an expansion chassis attached to it. The expected behaviour is to see all disks in main + expansion and graph health and temp of them. Status of all fans, memory, processors and such.
Also have an 812rp+. There it finds some units but it doesn't store/save graphs for the disks and it feels icomplete. For that unit I couldn't snmpwalk, gives me oid error. Odd. Can send incomplete if ok.
Some of the info libre finds for the 2212+:
Can you just snmpwalk system on the other device?
newdevice: Added additional support for Synology DSM devices #2738