Hi, Tom
i have been using unRAID for 13 years now. I love it.
however this issue did come up for me when using 6.** specifically. Opened a ticket with support and it was closed as a hardware issue which i accepted. So in getting that news i installed truenas ( some years ago). it still runs today with the same hardware without issue.
Money not being much of an issue for me as i use unRAID for my photography business. I invested another 5k in 2 systems. All brand new hardware , including SAS/SATA controllers / Cables. This error hit me after about 3 months of using it disabling 2 of my disks overnight. The second system lasted for about 5 months hitting 1 failed disk overnight.
Replacing the disks on both systems , This time failures on month 4 and 6 with different disks plugged into different cables. Then i proceeded to installed truenas on both systems , they have been running for a year and a bit.
I built a new unraid system at this time with new hardware. The problem cropped up around month 8 this time , using NAS rated WD RED's.
Im at a loss at this point , very torn. i love unRAID. but i cannot trust either hardware in general or unRAID.....im just not sure which one it is right now.