I have 2x 2TB drives setup in a stripe configuration. Currently have <1TB of data on this stripe. I want to convert these to a mirror. Can I accomplish this in the gui? I didn’t see many options in Storage>Disks.

Thank you, but I am just not seeing that. I’m on Core, maybe you are using Scale? If I go to Storage>Pools>[pool gear] there is an Export\Disconnect option. It gives me a pretty severe warning when I click on it, but maybe this is the way to Remove it from the pool?

[image] lyle677: I’m on Core Which version?

With an SSH session, what is the output for these two commands? zpool status -v <poolname> zpool list -v <poolname> As @dan requested, the version of Core is important too, since older versions did not support this feature.

[image] winnielinnie: zpool status -v <poolname> root@freenas:~ # zpool status -v Spare pool: Spare state: ONLINE status: Some supported and requested features are not enabled on the pool. The pool can still be used, but some features are unavailable. action: Enable all features using ‘z…

[preformatted text] We will miss you. :cry:

Is the pool feature enabled? zpool get feature@device_removal Spare

[image] winnielinnie: zpool get feature@device_removal Spare value=disabled :frowning:

Do you plan to import this pool into an older version of TrueNAS or ZFS? If not, you can safely upgrade your pool’s features: zpool upgrade Spare IIRC, this can also be done in the GUI from the pool’s page. Click on its cogwheel icon.

[image] winnielinnie: zpool get feature@device_removal Spare OK, done! value=enabled I went back through the Storage>Pools menu options and didn’t notice any changes. Still can’t find a Remove option

Convert 2 disks from stripe to mirror

TrueNAS General

winnielinnie December 13, 2025, 6:35pm 17

We will miss you.

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Convert 2 disks from stripe to mirror

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