I created 3 disks raidz1 vdev, then transferred data from 3 disks windows jbod there, then added the 3 windows disks from windows to the truenas vdev (existing vdev extended 3 times). First instead of displaying 64tb of usable space (raidz1 with 5*16tb disks) Truenas displays 54tb, this is 10tb er…

We will not be implementing a feature like this in userspace for all the reasons other people tried to explain here. This would have to be implemented transparently in ZFS which at this time we are not willing to do due to the complexity involved. Maybe there will be movement in upstream which we c…

[Not Accepted] Add full rebalance feature in the GUI

Feature Requests

Topic		Replies	Views
RaidZ Expansion on ElectricEel Nightlies TrueNAS General SCALE , RAID-Zx-expansion	84	9050	April 18, 2025
Removal of drives from vdev without replacement drive Feature Requests	12	165	June 10, 2026
Upgrading zraid/vdev options TrueNAS General Hardware , ZFS	12	1010	April 20, 2024
ZFS expansion-a-pollooza TrueNAS General	39	660	February 16, 2025
24.10 RC2 Raidz expansion caused miscalculated available storage TrueNAS General SCALE , ZFS , RAID-Zx-expansion	184	7256	August 10, 2026

[Not Accepted] Add full rebalance feature in the GUI

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