Wish I had found this thread earlier, have been chasing a random corruption of movie files for over a year. It is so random and such a small percentage of files that I may not catch it for months till I am playing back a video file and find it corrupt at a random place, not the first 128MB though. Issue followed from Windows 2019 to 2022 server and a compete rebuild to newer hardware. Originally I was using SSD cache but moved to 384GB RAM with no change. Windows Defender is in use but drive pool is excluded from scans. Drive Pool is duplicating everything but read striping is disabled and verify after copy enabled now, hopefully that fixes it.