Meodato

I use the console webgui and it usually is quite responsive.

Have you already looked at the kvm.amd npt bug that is affecting Ryzen (and older) AMD systems? Posts may state Ryzen specifically, but it is an issue in KVM with regards to older AMD chips as well. If you haven't considered it, that may be the cause of your consternation.

Using 6.4.0-rc7a I just got my new machine up and running this evening and was attempting to start the array. I have assigned 1 parity disk, 2 data disks (all 3TB Seagates) and 2 cache drives (500GB Samsung EVO). Each time the page refreshes it shows the error message, "Array Stopped: Missing Device node(s)". I've replugged all of my disks into the motherboard and I attempted to search the forums for this, but got 29k hits. I've attached the diagnostics, and I'm afraid I don't know what else to do at this point. If I can give more information, please let me know. Help please! server-diagnostics-20170802-2334.zip