Up to now, my experience with unraid has been with one parity drive, but I'm looking to increase that to two.  I just have a couple questions that I like to answer before I decide on the type of drive to purchase.

 

I'm undecided on what type of drive to use for parity.  I just read somewhere that it's a waste to use a Red drive for parity, is this true?  That is, is it better to use green drives over red (and even blue)?

 

To run two parity drives, do each one have to be as large as the largest data drive like it is when running with one or can they be split?  For example, if my largest data drive is 4TB, can each of the parity drives be 2TB?  I have a feeling the answer is they both need to be 4TB but looking for confirmation.

 

 

Thanks

 

 

8 hours ago, dn7172 said:

I just read somewhere that it's a waste to use a Red drive for parity, is this true?  That is, is it better to use green drives over red (and even blue)?

Parity should be the same as the other drives on the server, just avoid SMR drives.

 

8 hours ago, dn7172 said:

To run two parity drives, do each one have to be as large as the largest data drive

This

8 hours ago, JorgeB said:

Parity should be the same as the other drives on the server, just avoid SMR drives.

 

This

 

Thanks appreciate your help and tip about SMR which I'm learning about now.

 

https://en.wikipedia.org/wiki/Shingled_magnetic_recording