ajburnet

thanks - my thinking was given the issue is apparent across three different controllers, leads me to psu, even if sufficient capacity....

Hi folks, I've recently started encountering an issue whereby disks go missing (across two different SATA cards) but reappear after a 'soft' reboot. I replaced my old SAS supermicro controller card knowing these are troublesome with an INSPUR 9207-8i 6Gbps HBA LSI FW:P20 (IT Mode), the other 2 port sata is also a recommended chipset. This issue occurred prior to this change, and continues after, so likely unrelated. The only other changes prior to this issue was swapping out the PSU and adding in a GPU. I can't determine the cause atm; nothing obvious in the logs (see attached + diagnostic). I've run a mem test without any issues and upgraded to the latest available BIOS version. I have installed a 1080 GPU but I have that in slot 3 to ensure the sata cards have sufficient PCIe bandwidth. Its being used for frigate processing so the impact on performance is negligible not being in a full speed slot. I have replaced the PSU with a newer spare modular one (of same wattage, 750W) - I did consider if this was sufficient wattage but calcs seem to confirm its fine (I have 17 HDDs, two SSDs and a 1080p GPU, plus a coral TPU). It has no issue when all drives are spun up and doing a parity check. Note: I cancelled the last parity check (as I was upgrading BIOS), but they complete without issue... Any advice on how to proceed is appreciated! Thanks. labrador-diagnostics-20250428-2159.zip labrador-syslog-20250428-1158.zip