Storage issue. Checksum errors

[Gimis]

zpool status -v

pool: boot-pool
state: ONLINE
scan: scrub repaired 0B in 00:00:04 with 0 errors on Fri Nov 7 03:45:05 2025
config:

    NAME         STATE     READ WRITE CKSUM
    boot-pool    ONLINE       0     0     0
      nvme0n1p3  ONLINE       0     0     0

errors: No known data errors

pool: tank
state: ONLINE
status: One or more devices has experienced an error resulting in data
corruption. Applications may be affected.
action: Restore the file in question if possible. Otherwise restore the
entire pool from backup.
see: Message ID: ZFS-8000-8A — OpenZFS documentation
scan: scrub repaired 0B in 01:31:04 with 0 errors on Thu Nov 6 12:03:35 2025
config:

    NAME                                      STATE     READ WRITE CKSUM
    tank                                      ONLINE       0     0     0
      mirror-0                                ONLINE       0     0     0
        e836aeb0-e0f7-4373-8297-64afec7bd2a1  ONLINE       0     0     2
        fff0bf6a-6695-4434-9cf6-ab446196060c  ONLINE       0     0     2

errors: Permanent errors have been detected in the following files:

    /mnt/tank/shared/NAS_Test/NAS_Test3/Sirens.S01E02.Talons.1080p.NF.WEB-DL.H.264-EniaHD.mkv
    /mnt/tank/shared/NAS_Test/NAS_Test/NAS_Test/Back.To.The.Future.2.1989.1080p.BluRay.x264.EN.LT-NN.mkv

Still errors in the test files. Deleting and uploading again, or just uploading to different subfolder could give different list of checksum errors

And the memtest86+ have results… and plenty of them

Tried both rams, together 2 times, both time all froze at this point (Pas89% / Test72%)
Then removed one - still got errors, placed the removed one back, and removed another, still errors…

Added same spec rams from my main PC - no errors… (with one first, then added second just to be sure)

So rams got to go, and I guess there is no need to do Prime95 test anymore?