Hello,
I'm experiencing a very strange problem. Every few weeks, ZFS scrub detects checksum errors on all of the HDDs belonging to a vdev (every time it happens to a different vdev):

The last time it happened (today), I wrote a simple script to detect which backups contains a specific chunk by using "proxmox-backup-debug inspect file". Hopefully, that chunk was not part of any backup, so I just deleted it, then run zpool clear and now I started again the scrub.
I'm running the last version of PBS (4.1.0). The server has ECC RAM and I already tested the RAM with Memtest.
I'm experiencing a very strange problem. Every few weeks, ZFS scrub detects checksum errors on all of the HDDs belonging to a vdev (every time it happens to a different vdev):

The last time it happened (today), I wrote a simple script to detect which backups contains a specific chunk by using "proxmox-backup-debug inspect file". Hopefully, that chunk was not part of any backup, so I just deleted it, then run zpool clear and now I started again the scrub.
I'm running the last version of PBS (4.1.0). The server has ECC RAM and I already tested the RAM with Memtest.