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

 

Disk dropped offline and reconnected again, this is usually a power/connection problem, also a good idea to update the LSI firmware to latest.