WD Red 8TB: Mixing Air and Helium Drives?

[jmcguire525]

Is there any harm in mixing air/helium drives that are otherwise identical? I have 12x8TB Reds with the same model number, but half of them are air filled and the other half helium.

If I do mix them, and use two 6x8TB vdevs, should I put all of the air filled drives in one vdev or mix and match evenly?

 

[HolyK]

Same model numbers but different types? Could you share the numbers please?

Anyway it does not matter from FS/OS perspective. Just be aware that the HE HDDs have extra S.M.A.R.T attribute ID #22 which BSD does not recognize so smartctl shows this: 22 Unknown_Attribute 0x0023 100 100 025 Pre-fail Always - 100 which is actually a "Helium fill level in %".

 

[jmcguire525]

Same model numbers but different types? Could you share the numbers please?

Anyway it does not matter from FS/OS perspective. Just be aware that the HE HDDs have extra S.M.A.R.T attribute ID #22 which BSD does not recognize so smartctl shows this: 22 Unknown_Attribute 0x0023 100 100 025 Pre-fail Always - 100 which is actually a "Helium fill level in %".

I guess the model number isn't identical... They are both WD80EFAX, but the helium ones have -68LHPN0 and the air ones -68KNBN0

 

[Jailer]

Just be aware that the HE HDDs have extra S.M.A.R.T attribute ID #22 which BSD does not recognize so smartctl shows this: 22 Unknown_Attribute 0x0023 100 100 025 Pre-fail Always - 100 which is actually a "Helium fill level in %".

That's just on the white label drives unless WD have changed that recently. I have one RED helium filled and it is recognized correctly.

Code:

 22 Helium_Level            0x0023   100   100   025    Pre-fail  Always       -       100