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It's hard to believe it's already been a year since we launched the HexOS Beta and the early access campaign. What a journey it's been! In today's blog post, we're going to provide a summary of this past year's accomplishments, a run-down of what's left to achieve our 1.0 release, what's coming next, an update on the AnyRaid project, and our HexOS Holiday Sale! Read all about it in our latest blog post: https://docs.hexos.com/blog/2025-11-26.html

Hey, no this will not work as you've described it. With 2 drives Hexos will automatically create a mirrored pool, meaning your data will be stored on both drives at the same time and you will only have the capacity of 1 drive but you can lose 1 drive without losing data. You cannot create a Pool without parity with more then 1 drive. A RaidZ Pool type cannot be changed after it was created, so you will be stuck with your mirrored pool and you cannot expand it. If you then throw in your 4 drives from the old NAS, Hexos will create a new RaidZ1 pool, which has the capacity of the numbers of drives -1 (capacity of 3 drives in your case). You can then copy the data from your mirrored pool to your RaidZ1 pool. If however, your mirrored pool does not have enough capacity, get yourself a 3. drive to create a RaidZ1 from the beginning, copy your data over and afterwards add your drives from your NAS to the pool or create a new pool. (expanding a pool can only be done with 1 drive at a time and takes some time). Also make sure all your drives have the same capacity or else Hexos will not group them together.

@ThoDC If you haven't already, email support@hexos.com and they will schedule a time to work with you on this. See

I did about 8 or 9 times now. And while I have done a lot of volume testing I have everything backed up and continue to treat this experience as a beta test. I'm not sure we are far enough down the path to treat it as anything else. People are still yelling the Immich is broken and how can Eshtek have such a crap product. And when they find out it was actually a TrueNAS change you start to see complaints about how this product can't accommodate this type of change. Then the complaints asking for a conversion process from old to new but that was manual so it didn't work for everyone. So now people have partial changes from several tries and a broken product. Then guys like me who left the safety of the TrueNAS catalog and followed Docker install videos. so I am not making things any easier. I made a joke a while back that go-live would be everyone formatting their systems and all starting from the same point. I said it a second time not to long ago because of this Immich specifically because I wasn't joking anymore. Now I can't see any way around it. How do you explain to the support team everything that got you to the situation your in? They know that firestorm is coming. So I do apologise to responding with this doom and gloom post to your very simple and straightforward request. I sincerely hope that they have a way to help you because I had to reload 1.25 TB of images and almost 10TB of movies (with a few family vacation videos sprinkled in. Honestly, I thought that was why rsync was going to be the answer but I guess nothing is ever that easy. Best of luck, really.