Hello,

I have a system with 2 parity disks and 11 data disks + 2 cache drives. One of my cache drive and other 5 disks are directly connected to motherboard satas while the other 8 disks are connected via a LSI SAS2308 PCI (the other cache drive is a nvme directly connected to the motherboard).

Last week I had a problem with disk 11 (TOSHIBA_MG07ACA14TE_Y240A00TF94G - 14 TB (sdj)) which is connected directly to the motherboard with a sata cable: it started to have a lot of read and write errors and then got disabled by Unraid. I then shutdown the system, changed the sata cable and at the reboot I did a full smart check that gave back 0 errors. I then decided to rebuild the disk and the system and the disk acted normally for almost a week.

Then this morning it happened again: a lot of read and write errors and it got disabled again. I'm not very tech savy so I can't understand very well the logs but I attach them here with the diagnostics hoping that someone could give me a hint to what's happening. I have to change the drive even though the smart check seems fine?

Thanks for everyone that could help me

 

tower-diagnostics-20230518-1031.zip

Disk dropped offline, this is usually a power/connection problem, but there's no SMART since it dropped, replace both cables and post new diags after array start.