Switch from 2 parity disks to 1

[Tuumke]

I had setup my new dedicated (hetzner) machine to use 2 parity disks. Is it possible to go back to 1 parity disk? Or will that break my system

 

[itimpi]

You can always remove (or add) parity disks at any point.

• stop array
• unassign unwanted parity disk
• start array to commit change

[ChatNoir]

If you plan to use the old parity drive as a data drive, I strongly suggest to make a new flash backup once it is done.

[Tuumke]

12 minutes ago, ChatNoir said:

If you plan to use the old parity drive as a data drive, I strongly suggest to make a new flash backup once it is done.

And why is that necessary?

[ChatNoir]

11 minutes ago, Tuumke said:

And why is that necessary?

It is recommended to make a backup after every significant change but in that case it is even more important.

 

If you use an old backup with a data disk as a parity drive, Unraid might accept that as valid (technically it would be), assign the data drive as parity and start the Array. Then, the data on that drive will be at risk.

[Tuumke]

58 minutes ago, itimpi said:

You can always remove (or add) parity disks at any point.

• stop array
• unassign unwanted parity disk
• start array to commit change

If i stop array and set parity 2 to "none" it says missing disk? I can choose this option:

Edited October 19, 2022 by Tuumke

[JorgeB]

31 minutes ago, Tuumke said:

I can choose this option:

Yes.