i/o issues, data and parity disk - failed

Today is a great day! I pressed rebuild and run the whole proces. Everything is working again. No more weird messages from my mac. Only Softraid told me all the in/out connections failed during the proces, but after pressing recover failed disks all the errors disappeared. Diskwarrior fixed a long list of issues and made a folder with a few missing files i have to place back, but all the other folders are working again. 

Is there something i need to do to finish the proces or is this it?

I want to thank you for all the great help here on the forum! Couldn't have done it without you!

@drico 

Yes. Then make sure you use the "Preview" at the last step to check some recent/random files. "replace" is undoable. 99% of the time it goes 100% OK. Just to protect against that 1%.

@drico 

Disk warrior works like magic. I suspect you are fine. If you want, besides running Disk warrior, "validate" the volume with SoftRAID, to be sure parity data is up to date.

Validating proces has started. Talk to you in 3 days haha

@drico

You can use your volume in the meantime, in case you did not know. But do not restart, unlike rebuilds, validate does not survive a restart.

Ok i will let it run. The only thing i see now is that the volume went from 38,6TB available to 39,4 TB available. 0,8TB Seem to be missing....

Could have been deleted files, or caches, also.

Validating is done.

@drico 

Note: Validate ensures all the data on the volume was readable, and that all parity data has been updated (with flash data it is normal for parity blocks to be updated, because of how TRIM works, whereas on HDD's you will generally never see updated parity blocks after your first validate)
I mention this as a reminder that validate cannot "fix" any volume, directory, etc issues. Those are from MacOS. what parity data does is ensure if a disk fails, the volume will behave the same as before the problem. If there was a Mounting issue, it will still be there.

Just want to check one thing. Every time i start Softraid, It says in the software tab that the RAID is degraded and there is 4 missing disks. It only lasts 1 seconds and then it returns to normal. I managed to take a quick screenshot. Is this ok?

@drico 

The SoftRAID user interface updates in real time, so yes, this is totally normal.

Great! One thing i'm really curious about is if it's possible to safely upgrade to Mac OS Sonoma without having problems with my Thunderbay. Especially now that i had this problem after connecting it to the Macbook running Sonoma of my girlfriend. There will bee a point in time in the near future i need to upgrade.

@drico 

Yes you can upgrade. My recommendation on all macOS upgrades is remove external storage first. Always a good practice.