My hard drives keep failing and I'm worried of losing everything. I have dual parity, so I only lose everything if a third disk fails, but it's still worrying. Basically, here's what happened:
1. Disk 5 failed
2. I replaced Disk 5 with a pre-cleared hard drive, following all the manual instructions
3. A week later, disk 6 failed. I thought this was an unlucky coincidence
4. I replaced disk 6 exactly as I did previously. The array rebuilt successfully
5. A few days later disk 6 failed again. I knew that my new pre-cleared hard drive wasn't the issue here, so I unassigned disk 6 and then reassigned it to the array (again following the manual instructions)
6. At this point, as the array was rebuilding disk 6, disk 8 failed.
7. Now the parity is all rebuilt, but disk 8 is obviously still failed.
tower-diagnostics-20221128-1809.zip
FYI:
All of the hard drives being used in this NAS (parity and disks) are Seagate EXOS 16TB disks.
What should I do? I will check the power supply to the NAS chassis and the ethernet cable, as that's what some other forums point to. I will keep things posted here, but if you have any other ideas please let me know. Attached are the diagnostics.
Thanks