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ZFS Pool Expansion


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Posted

From what I understand, Unraid support expansion of a ZFS pool by adding a vdev of equal width as the original vdev.  I can't find documentation on exactly how this is done, so I want to ask here before I invest in the drives.

 

I currently have 4x10TB drives in an unraid array that are nearing capacity.  My plan is to install 4x16TB new drives as a new ZFS pool (RAID-Z1).  After moving the data from the unraid array onto this pool, I intend to repurpose the 4x10TB drives as a ZFS vdev to expand the 4x16TB pool.

 

Does unraid support this?  What is the process in the unraid UI to perform this expansion?

  • Solution
Posted
7 hours ago, Xe138 said:

Does unraid support this?

Yes, but 6.12 has bug where it won't allow you to add a vdev made of smaller devices, that won't be an issue with 6.13, but for now you would need to do it manually and then re-import the pool.

 

7 hours ago, Xe138 said:

What is the process in the unraid UI to perform this expansion?

Just add 4 slots to the pool, assign the new devices and start the array, but like mentioned, with 6.12 it will only work if the new disks are same size or larger.

  • 1 month later...
Posted

Following up on this now that Unraid 7 is released in Beta and it's prime day.  Will vdevs made of smaller devices be supported in Unraid 7?

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