Hello everyone.

I am a new Unraid user and have just set up my first Unraid system.

For my array, I have set up a 4TB HDD for data and a 4TB HDD as parity.

For additional security, I purchased a 12TB HDD and would now like to set it up as a second parity.

The preclear disk went through without error.

So I stopped the array and set the 12TB HDD as second parity.

Then I started the array.

Now the array has started and nothing has happened. I can't see that a parity restore is running. Also, i cannot see any reads/writes on the parity 2 disk.

Status of Parity 2 is invalid. 

After clicking the SYNC button to start parity synchronization, nothing happens.

Even a reboot did not work.

I had to shut down the system hard and after the reboot the array did not reboot.

I had to add the 12 TB HDD again as parity 2 and am now at the same point. 

I would be very grateful for any suggestions.

Best regards!

 

 

Edited April 9, 20242 yr by tlo
forgot to attach diagnostic file

You are likely to get better informed feedback if you attach your system’s diagnostics zip file to your next post in this thread.

So you have 2 parity drives and 1 data drive? I'm not sure what the second parity would do since the only data drive is covered by parity 1.

Unraid is desinged to allow two parity drives, so why not. More parity drives resulting in more security.

Its like the decision between RAID 5 and 6.

My storage will grow in near future.

But for now i would like to know why the parity sync is not starting/progressing and don't let me reboot Unraid. 

Edited November 25, 20232 yr by tlo

And this is the last Unraid status report:

 

Event: Unraid Status
Subject: Notice [UNRAID01] - array health report [FAIL]
Description: Array has 5 disks (including parity & pools)
Importance: alert

Parity - ST4000VN006-3CW104_ZW60ZVAK (sdb) - standby [OK]
Parity 2 - ST12000NM001G-2MV103_ZL2AF1YQ (sdc) - standby [DISK INVALID]
Disk 1 - ST4000VN006-3CW104_ZW60YWF8 (sdd) - active 37 C [OK]
Cache - Samsung_SSD_980_1TB_S649NU1W907792R (nvme0n1) - active 38 C [OK]
Cache 2 - Samsung_SSD_980_1TB_S649NU1W907800V (nvme1n1) - active 37 C [OK]

Data-Rebuild in progress.
Total size: 12 TB
Elapsed time: 5 hours, 12 minutes
Current position: 0 B (0.0 %)
Estimated speed: 0.0 B/sec
Estimated finish: 25407194 days, 10 hours, 22 minutes
Sync errors corrected: 0
 

Please post the diagnostics.

1 hour ago, tlo said:

Do you can't see it?

I can but didn't notice, we always recommend posting the diags in a new post for better visibility.

 

Unraid driver is crashing when the parity sync starts, this usually suggests a hardware problem, but sometimes could be compatibility, would suggest running memtest and if nothing is found try with a different release, for example v6.11.5

 

 

Many thanks for your help. Turns out I was having issues with my RAM XMP configuration. DDR5 is a bitch!