RaidZ1 with two disks still impossible with Electric Eel Beta?

TrueNAS General
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Hi all. I have set up my test machine with EE beta and found that the webui still asks for a minimum of 3 disks for RAIDz1.

The (Marked as Done) Jira issue for RAIDz expansion suggests that the UI should now allow creating a RAIDZ1 with only two disks.

Am I missing something?

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Linked Issue [NAS-127617] - iXsystems TrueNAS Jira

Still open. Partner UI Intrergration. Showing in Progress

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Not in the tasks listed.

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I looked at the ticket [NAS-127617] and I am unsure if the UI work was completed or not.
Partner UI Integration is still showing in progress

(Fix versions) as SCALE-24.10-RC.1 (ElectricEel) and (Labels) as EEBeta2RC

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I’m noticing the same issue as well. The current RC2 UI requires 3 drives when creating a new raidZ1.

Looking into the jira ticket, seems the description was changed to remove the comment about allowing 2-drive Z1? did the devs change their mind about allowing 2-drive Z1?

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I definitely remember seeing this change being listed elsewhere but I wasn’t even able to find it when I made the original post. I think you might be right, they might just have changed their mind :frowning:

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It may be that a decision was made for the Enterprise market. We get the results of 99%, (except HA and unlimited TrueCommand), for free. But, iX may have decided that it was too risky for their Enterprise customers, (and their support contracts).

On the other hand, some of us are quite capable of manually creating a pool with;

  • 2 disk RAID-Z1
  • 3 disk RAID-Z2
  • 4 disk RAID-Z3

Or even add a new vDev with such a configuration.

Time will tell.

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On the other hand, some of us are quite capable of manually creating a pool with;

2 disk RAID-Z1
3 disk RAID-Z2
4 disk RAID-Z3

I am building my first NAS and have 3 drives (1 full, 2 empty) and was planning to create a Raid-Z1 with the two empty drives, copy the data and add the third drive. That’s why I was looking forward to Electric Eel release.

Can you point me to the resources that explain how to create a 2 disk RAID-Z1?

Thank you.

9

Sorry, not in the context of TrueNAS. Their are special partitioning layouts for disks, and using specific paths for the ZFS partitions. I don’t have that information handy.

As for the command, it’s simple as;
zpool create POOL raidz1 PATH/DISK1_PART PATH/DISK2_PART
Now the GUI won’t know about that new pool. But, you could manual export it;
zpool export POOL
Then re-import it via the GUI.

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