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[Unraid 7.0] Adding new drives to array - best practice in 2025?

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Existing array is one 4 tb hard drive, no parity. I'm adding two factory recertified seagate 16tb drives (one as a second array disk, one as parity). My understanding is that Preclear/Clear is no longer necessary before adding the disks, but should I do an extended smart test before adding them? Or does the process of building parity on one of the new drives essentially act like an extended smart test?

 

Appreciate your thoughts, thx!

You are correct, preclear is no longer needed, as indicated in the documentation...

 

Quote

Prior to Unraid v6, this was highly desirable as the array was offline while Unraid carried out the 'Clear' operation. but Unraid v6 now carries out 'Clear' as a background process with the array operational while it is running so it is now completely optional. 

 

  • Author
3 minutes ago, googleg said:

You are correct, preclear is no longer needed, as indicated in the documentation...

 

 

Right, but for a new drive is it wise to perform an extended smart test before bringing into the array?

I would at least do an extended test on recertified drives.

  • Author
1 hour ago, trurl said:

I would at least do an extended test on recertified drives.

That was my thinking, I'll do that. Thank you!

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