So I migrated my xpenology server from DS918+ model to DS3622xs, and the nvme cache no longer works since the model number no longer exist in libsynonvme.so.1. I dig into the libsynonvme.so.1 and found it might check your pcie location to have the nvme drive works properly. After inspect the file, I found it just checks /etc.defaults/.extensionPorts and we just need to modify that.   Here are the steps: 1. Check your nvme pci location(in my case it's 0000:00:01.0😞 udevadm inf