sgpowelluk

Apologies for slow feedback, I haven't had any free time until now. Ford Prefect, the above explanation made perfect sense, so I followed your steps and managed to get everything visible, incluing the NVMe and the initial VMs I really care about. So all being well I think you and JorgeB have managed to resolve my issues, which I'm extremely grateful for your help. I've also managed to learn a bit more about Unraid in the process which is also of benefit. I'll give it a few days and do a bit more testing, then look at the BIOS upgrade and whether that improves options around PCIe override as well. I believe I need to mark this as solved, but do I also need to mark yourself and JorgeB in any way from a reputation perspective. Once again really appreciate both your assistance. Regards Steve

Hi JorgeB, Our posts crossed so thanks for the reply. Is that due to the fact that the GPU wasn't in the system for that second diag dump? Apologies, my lack of unraid knowledge means I'm not quite following. many thanks Steve

Thanks Ford Prefect/ Trurl, I was aware that there has been a new BIOS for the motherboard for a while and thought that might be a sensible next step. That said I held off as I was worried that it might mess up my MMU groupings and stop some of the VMs working. Similarly if the new BIOS improved MMU groupings I thought I may be able to remove 'PCIe Overide', which I guess is generally considered an undesirable workaround. Any comments on whether this is likely to be a big issue with my concerns listed? In terms of the 320GB drive; I used that to build the server while I awaited for the 8TB ones on back order. In my naivity I hadn't realised that removing a drive had knock on effects, such as recalulating parity (I believe), so some people had suggested leaving drives in. To be honest I am due to swap it out shortly with either an existing 3TB from my desktop or maybe even another 8TB. That still leaves me needing three/ four working SATA ports though (Four to do advance preclear). I asbolutely agree though it shouldn't really be in there any longer. I suspect the BIOS upgrade may be the logical next step, so any thoughts on whether that is likely to negatively effect my VMs or whether once upgraded at what point I should disable PCIe override; greatly appreciated. Thanks once again to both of you. Regards Steve

So curiosity got the better of me and I managed to pluck up courage to try a few things. Firstly I booted with the second NVMe to get the diags. I've attached the diags from when the data drive dissappears. Hope this sheds some light. From the BIOS perspective the drives appear as:- SATA 0 SATA 1 SATA 2 SATA 3 - 8TB Data SATA 4 - 8TB Parity SATA 5 - 320 GB There does seem to be an odd anomolie though in that on some of the BIOS screens the SATA 5 and the 320GB doesn't appear to show, where as on other info screens it does. Haven't gone through all permitations to bottom this out. I've also moved the SATA ports around and found that when the second NVMe is present only the last two SATA ports are able to see drives in UNRAID. Oh, I should say this diags was with the 3070 GPU removed to ease access to NVMe. Many thanks for continued assistance. Regards Steve unraid-diagnostics-20201024-1524.zip

Many thanks both for the super speedy responses. In terms of adding the NVMe back in to get a diagmostic dump, can I do that 'relatively' safely without data corrpution or loss? As I say I was panicking a bit at first when the drive dissappeared. Can I also shift the SATA port around i.e. does it tie the drive to the port in some way or does it recognise a drive by an ID regardless of port it is connected too? Thanks Steve

Hi, I was hoping someone could give a newbie some advice regarding a problem I've just encountered. I’m only a few months into my unraid experience, but the other day I thought I should now add a cache drive to the system. I therefore bought a second WD 1TB NVMe to use for this purpose (The first one I pass through as a windows VM). When I added this to the system and restarted unraid, my main data drive (8TB Iron wolf) was marked as missing. Unfortunately I was panicking a bit at this point, so took the obvious step of removing the NVMe, which reverted everything to normal (I hadn’t taken a diagnostic dump during the problem due to panicking I'd lose data). When I looked at the BIOS all the drives were present including the new NVMe. Before attempting this again I was wondering if there was anything I was obviously doing wrong or should do to add this drive? I’ve attached my normal diagnostics file, and my hardware below, but thought I’d raise the question before building up my nerve to try again, even if just to grab a diagnostic dump during the problem (I don't want to risk corruption or data loss if I can help it). Any assistance and advice greatly appreciated. Best Regards Hardware · Version 6.8.3 2020-03-05 · AMD 3900X · Gigabyte Aorus X570 Pro Motherboard · 2X 8TB Seagate Ironwolf HD. One as data and one as parity · 1X 320GB old data drive · Gigabyte GeForce RTX 2070 Super WINDFORCE OC 3x 8G (Pass through to windows VM) · CORSAIR VENGEANCE LPX 64GB (2 x 32GB) DDR4 3200 (PC4-25600) · 1X WD Blue SN550 1TB High-Performance M.2 Pcie NVMe SSD (Pass through to VM) · 1X 4 port Intel NIC · 1X Old GPU for system Plugins · Community Apps · Dynamix System Temp · Fix Common Problems · Nerd Tools · ProfFTDd · Statistics · Tips and Tweaks · Unaasigned Devices · UPnP Monitor · User Scripts · VFIO-PCI CFG PCIe override = Both unraid-diagnostics-20201024-1152.zip