Failover / Standby

TrueNAS General
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1

Hi,
Currently, I have two TrueNAS SCALE servers that I want to use as primary and secondary. I have virtual machines (Windows servers) running on TrueNAS. I have already configured the primary server and I want to have the exact same configuration on the secondary server, using it as a failover or standby server so that if something happens to the primary server, I can bring the secondary server online within a maximum of one to two hours.

How can I synchronize the two servers, and what kind of failover plan or solution can I set up between the two servers?

Please note that I’m currently using the standard version of TrueNAS SCALE, but if there is a good solution available in the professional version, I am open to upgrading.

In any case, I’d like to know if anyone has experience with this kind of setup.

2

There’s no buildin way for failover in the free version of truenas. You’d have to manually create a sync workflow for files, shares, users vms etc and the enterprise version of truenas is only available on hardware purchased by iX systems.

3

Thank you for your comment.
I also ran many tests, and as a result, I decided to use this method:
ZFS Snapshot + Replication.

4

Yeah different levels of failover. The faster and more seamless often come at a price and it also depends on what services you want to failover be it VMs, SMB etc. Snapshots and Replication are a good catch all and are essentially free.

But as always test your backups/failover and make sure they provide you with the desired outcome.