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Just keep in mind things like cache-size, RPM, etc. The speed of the "raid"-set can be impacted (negatively) if it's not equal or higher than the current ones. So keep that in mind while trying to look for something. Unless you *really* need to expand it with 1 disk, maybe wait out until prices are going back down?

Happy to see that it's working now for you. 🙂 I still don't understand why this makes a difference which software you are using to create the USB drive, but hey at least it's running now. =D

Hi everyone. I updated HexOS on 3rd march 2026 and now I can´t log into it. "Server not availabe" is the message. The server runs fine and I have access to all my files, but I don´t want it running all the time. I use it only as data storage. What can I do? Cheers Axel

I... I was... I would have.... FUUUUUUUU-- Ordinarily, I would absolutely have tried another USB, and I actually was trying a bit ago, but that drive was being funky and wouldn't connect to Windows well and I gave up. I completely overlooked trying Balena Etcher (Rufus has always been rock solid for me so I never bother thinking aoub it) but NOW THAT YOU'VE SAID IT I feel like I remember needing to use it for CORE back in the day TOO! I am an IDIOT! Anyway, I grabbed a third USB, Etcher, and a new copy of the .iso, and set it all up again, and wouldn't you know it, the damn thing worked. Installed HexOS to the SSD, plugged in the HDDs and went to boot, and the box picked up the data drives to boot to. I thought I wasn't out of the weeds yet, but on a whim I tried re-enabling the B120i and going in and deleting the RAID array on the drives but keeping the single "array" on the SSD, which allows me to set the logical array as bootable in the B120i. Rebooted and... LOOK! HexOS!! I am as much at fault as any part of the technology in this thread, but in the end, through all that crap, and with your help, we got there, so... THANK YOU very much!!

I have also just received this alert! What happened with your system after six days? Did you need to do anything?

I was looking at the Ironwolf pro as an alternative, but yeah that's gone up in price as well. Think I've landed on the Toshiba n300 pro. Their prices seem to be stable (for the time being)

A quick update on this, after a few months of running, and now it's been running smoothly. After exchanging the Verbatim with some samsung drives, everything's working really well at the moment. Only one thing I have changed with the configuration, and that is exchanging the fans from Jonsbo that are in there by default, to some Noctua Fans (dual NF-A9 for the bottom part, and added a single NF-A8 for the top part). This actually had a temperature difference from around 20 degrees Celsius, so if you are considering this, and don't have active airconditioning in the room which will cool down the area really well, I definitely recommend to have the fans replaced with something that's better.

Hey, you can basically look at any NAS or Server/Entreprise HDD WD Red Pro Seagate Ironwolf (Pro) Seagate Exos Etc... However they have all exploded in costs unfortunately. Looking at refurbished entrepris drives might also be a good alternative.

In that case, did you try another USB drive or just 1 single drive? Also try using Etcher instead of Rufus.

Hello, So I have a pool of 5 hdd's. They're all 12 TB WD Red Plus drives. The problem is... is that WD is all out of drives for the year. All sold out. So the drives that are currently available have all gone up in price. So I'm looking for as comparative as possible drives as I can get my hands on. Any suggestions? Thank you

Nope, this is on loading HexOS's installer - the system hands off to USB boot, GRUB loads, I select "install HexOS" (out of the list of 2 options) and then I get that message. I don't get into any part of the HexOS installation itself.

The above messages are coming after selecting the boot drive where Hexos should be installed or beforehand?

This is with the B120i disabled and all 4 drives removed (just the boot drive) in Bay 5: This is with the B120i enabled and all 4 drives removed (just the boot drive) in Bay 5: After cleaning the disk (just by pulling it out, dropping it into Windows and doing dispart clean to wipe the parts) I don't think I can disable the B120i because I think it needs to be there to mark Disk 5 as bootable... Unless I'm crazy. (I'm probably crazy.) Whatever I do, I can't get anything to boot anymore! Losing my shit, haha! Thanks for your help so far @PsychoWards!!

ahh i totally misread yeah you should be good then

Okay, last update I guess. Everything now seems to work fine. Still have no idea what happened.

Hey, please keep us posted about the progress. Concerning why you shouldn't use a HW Raid in combination with Truenas, the official ZFS documentation has a great section about this you find it here: https://openzfs.github.io/openzfs-docs/Performance and Tuning/Hardware.html#hardware-raid-controllers

Hey @PsychoWards, thanks for your help. Good point - I HAD wiped the drive prior to installing HexOS the first time, BUT not during the most recent round of struggling through the LSI and B120i cards. I sort of assumed HexOS would still boot, and then when it didn't, figured I would just re-run the installer - I don't think I wiped the disk. I'll do that tonight and let you know how I go, thank you! Screenshot 2 is currently what happens without drives connected - suspect the above might help though. I thought to recreate the HexOS image on the USB drive, but not to wipe the destination drive! Got it, thanks on the RAID info. I had assumed that, if I let a dedicated RAID system handle all that, and just point TrueNAS towards the partitions, I'd be getting the benefits of both, but I can see why that would be the opposite of what I'm getting. If you'd like to, I'd love to learn more about why it's better to go with one or the other, especially when it comes to ZFS - my understanding of ZFS is basically "it's a file system and disk manager" (yes, I know that's like saying Windows is a file system... But that's what I know right now!!) Thanks heaps. Will report back tonight.

Are there any plans on the roadmap to allow installation and initial setup fully locally, with the option to connect to the Deck afterward? I really appreciate that you added a local interface. However, I’m looking for is a completely local-first setup experience. The requirement to connect to a cloud server just to get past the TrueNAS interface is still the main thing holding me back from switching from my current setup, though I may be in the minority. I understand that internet access to be required later for licensing and app updates, but needing cloud connectivity to complete the initial setup is a deal breaker for me.

Hey, 1. The drive you are installing on, does it already contain an OS/was it used before or is it a new drive? If it was used in the past, can you please try wiping? This helped some people in here already which were also not able to install Hexos on an used drive. 2. Try installing Hexos without any data drives connected and then login into the UI and use following guide to migrate from Core to Hexos, you should follow the path for migrating to 24.10 or later https://www.truenas.com/docs/scale/24.10/gettingstarted/migrate/migratingfromcore/ 3. Never use HW raid in combination with Hexos/Truenas, let the OS handle everything in SW raid. HW Raid + SW Raid gives you the disadvantages of both but none of the advantages 🙂

Thanks @Manders! I HAD HexOS running at the start but couldn't get any drives to work - now I can't get it to install anymore (see above screenshots.) Yep, though I don't mind if the data is wiped (would prefer not to but I know it may be necessary) Current pool is a bit of a mystery but it was handled by CORE. ZFS it would be I believe as I have the warning to upgrade my ZFS flags in the CORE install. No hardware raid in the old system, but I COULD run hardware raid in the new NAS box. Thank you! Hope that helps!

Hey there! Can you clarify something, because that text was a lot 😄 Have you got HexOS and TrueNAS Scale up and running now, albeit without any HDD pool? Are you trying to use your existing 4x4tb HDD in HexOS You mention RAID a whole lot, but hardware and software RAID. But HexOS and TrueNAS only support OpenZFS as far as I am aware, so is your existing pool in the OpenZFS format, or actually RAID?

** Update ** After about 3 hours, all services started running eventually. I'm running Ollama and OpenWebUI which was running extremely slowly. Last time they were running slowly after an update I noticed that the option to utilize my GPU had been unchecked in TrueNAS, after reenabling it, everything was fine. This time however, the box was still checked. I initiated a restart hoping that would solve the problem and it is taking FOREVER to have the applications up and running. At this point, I've restarted 7 minutes ago and no applications are showing as running. According to HexOS and TrueNAS, there are no applications installed. Is there a way to roll back a HexOS update? I don't know what to do.

OH, by the way - yes, I did re-create the HexOS bootable drive, in case something on read screwed up GRUB or the HexOS Image. I used Rufus 4.6 and the lates HexOS .iso.

Hi all, I'm truly sorry to be bringing you all a barely-HexOS related problem, but I come begging for help from the people who likely know best--NAS owners, Self-Host Enthusiasts, and the HexOS team themselves--with my proverbial heart in my hands. I'm at the point where I am truly frustrated and I just need to ask in case anyone has the magic solution for me (and I will owe you big time if you do!) Mods, I more than understand if this isn't relevant and you're welcome to remove this, and I apologise for wasting anyone's time. Here's the story. I'm upgrading from a HP Microserver (circa 2010) with no special upgrades; mainboard, SATA bays, TrueNAS CORE. Over time, the TrueNAS system locks up, and, while it works, I can't access or log into it at all - the login page just gives me "incorrect username/password" and I have to force power-cycle the thing. That's fine; I've wanted to upgrade for a while and found a good deal on a fully-kitted HPE Microserver G8 (with iLO - perfect!) from an enthusiast. HBA card, integrated RAID controller, 4-bay SATA, iLO, Xeon CPU, all the mods to make Disk 5 work for bootable media. I have had nothing but problems in migrating. Wanting to get off of old CORE (iX are discontinuing it, plus, doing moronic things like removing native SMART data...) to HexOS and SCALE, and since I have an EA backer license wasting away, I figured, no worries, I'll install HexOS and migrate the disks. I plugged in an SSD, installed HexOS, claimed the server, happy as. I backed up all the data a second time just in case and moved the disks across (4x4TB WD Reds, FWIW.) No disks in HexOS/SCALE interface. Alright... Probably RAID - it used to be software RAID handled by CORE, this thing has the B120i. That's fine. Go into HP SSA - no disks, only bay 5. WTF? Skip a lot of time and headaching and I realise the backplane is connected to the PCIe RAID controller (LSI 9261-8i) not the board (should have realised that, I know. I'm new to HBA RAID beyond just SW raid on Windows and CORE.) I... can't work out how to use the RAID card, it doesn't use a GUI, so it's all magic unknown CLI nonsense (to me, at least). Also, with some painstaking searching - it looks like LSI RAID cards need to be put into HBA mode for SCALE to control the RAID, but, SCALE doesn't support the card in HBA mode. Okay - fine. F*ck the RAID card - I disable it in BIOS and go back to the B120i. At this point I'm content with the RAID controller potentially losing me my data during RAID config. I screw around with boot modes about 18 times and finally get the drives to show up in HP SSA. Hoo-freaking-ray. Set up RAID, off we go to boot HexOS and install and get my goddamn NAS back up and running. And now we're up to NOW. With the drives in, I get the below: And with the drives OUT, I get this! So I can't use the RAID controller, I maybe can't use the B120i, and it almost feels like I can't use HexOS either. Argh! I am lost! I feel like I'm destined not to have a nas with any form of modern features! No iLO, no RAID controller, no damn apps, just my buggy old CORE interface on a nearing-20 year old box. So, for at least just the sake of your understanding of my current mindset, I plead for any help anyone might have for me. I wrote this a little tongue-in-cheek-humoured, but honestly, I'm so damn angry at this whole process (not HexOS, as I said, but the whole thing; HP, SSA, the B120i, the LSI card, the iLO, the NAS, CORE, SCALE, HexOS, you name it, I'm just soured on the whole lot, meanwhile my NAS is down and my hopes of a simple home freaking media server are shrivelling up.) Thank you for your time and for any help you could possibly offer me.

The original was 3 drives which was then expanded to 5 later on. Might just go with that route then for the time being