Get a Quote   (408) 943-4100               TrueNAS Discord      VendOp_Icon_15x15px   Commercial Support Toggle between Light and Dark mode


  2 minute read.

Last Modified 2021-10-05 11:18 EDT

TrueNAS Quality Lifecycle

Release StageCompleted QA CyclesTypical Use-caseDescription
ALPHA1TestersNot much field testing
BETA2EnthusiastsMajor Feature Complete, but expect some bugs
RC3Home UsersSuitable for non-critical deployments
RELEASE4General UseSuitable for less complex deployments
U15Business UseSuitable for more complex deployments
U2+6+Mission CriticalSuitable for critical uptime deployments

May 4, 2021

iXsystems is pleased to announce the general availability of TrueNAS 12.0-U3.1! This is a maintenance release that includes all the bug fixes and quality of life improvements from the TrueNAS 12.0-U3 release.

TrueNAS Enterprise customers are encouraged to upgrade their systems to get the latest performance improvements, bug fixes, and security enhancements. Enterprise customers can contact iX Support for assistance with upgrading their TrueNAS systems.

Contact MethodContact Options
TelephoneMonday - Friday, 6:00AM to 6:00PM Pacific Standard Time:

US-only toll-free: 1-855-473-7449 option 2
Local and international: 1-408-943-4100 option 2
TelephoneAfter Hours (24x7 Gold Level Support only):

US-only toll-free: 1-855-499-5131
International: 1-408-878-3140 (international calling
rates will apply)

TrueNAS 12.0-U3.1 Changelog

Security Advisory

Bug Fixes

  • [NAS-109912] - ZFS checksum errors with PMC8003/pms(4)
  • [NAS-110171] - Two dashboard widgets hanging after update to 12.0-U3

Known Issues

NAS-110246Pools > Edit Zvol fields show incorrect data or not populatedEditing zvols requires filling in additional properties. This will be addressed in 12.0-U4. The workaround is to select Sync, Compression level, ZFS Duplication properties to be able to apply changes when editing a ZVOL.
NAS-110097netcli does not generate carp password on HA systemsSet a CARP password and do not leave it blank when using the CLI to configure the high availability (HA) feature.
NAS-106992Persistent L2ARC is disabled by default.While the underlying issues have been fixed, this setting continues to be disabled by default for additional performance investigation. To manually reactivate persistent L2ARC, log in to the TrueNAS Web Interface, go to System > Tunables, and add a new tunable with these values:
  • Type = sysctl
  • Variable = vfs.zfs.l2arc.rebuild_enabled
  • Value = 1
TrueNAS "root" user account cannot be an SMB user.This is an intentional change to improve software security and suitability for deployment in a variety of environments. Update the SMB configuration to use a different user account.