r/UNIFI • u/Dashstraight • 1d ago

Help! Problem initializing UNAS Pro

Just recently picked up a UNAS pro and have a 20TB and 2x 18TB NAS drives available to install. Well, while waiting for the 2x 18TBs to arrive in the mail, I initialized the storage pool with the 20TB hard drive and transferred all of my data to the 20TB (~13TB used). When I received my 2x 18TB drives in the mail the system informed me that they couldn’t be added to the initial storage pool because the initial drive was larger than the joining drives. How can I recover from this and use all of my drives in a raid 5 configuration? (I know that it will revert my 20tb drive to 18TB). Would the best course of action be to setup a 2nd storage pool with the 2x 18TB drives and then xfer my data to that pool, then move the 20TB to the 2nd storage pool?

Any advice appreciated, thanks!

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u/the_cainmp 1d ago

You got the process. New pool, and old drive to new pool

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u/Dashstraight 1d ago

Thanks for your reply! It is comforting knowing that my thought process is validated in trying to fix this issue.

1

u/the_cainmp 1d ago edited 1d ago

Next time be a little more patient 😁

1

u/Dashstraight 1d ago

And here I was thinking I was being more efficient by moving all of my data ahead of time LOL

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u/shrimpdiddle 1d ago

You must remove the 20 TB drive and start over. To keep things simple, once your pull the 20 TB drive, remove all partitions before reintroducing it to the NAS alongside the 2x18 TB drives.

1

u/Dashstraight 1d ago

Is there any reason why I couldn’t start a second storage pool with the 2x 18TB drives, move all the data from my initial storage pool with the 20tb hard drive, then add my 20tb hard drive to the second storage pool?

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u/shrimpdiddle 18h ago

That should be fine.