r/truenas

I am running TrueNAS Scale in DELL Precision Tower 3620 case. Before I used two 4TB WD Red Plus 3.5" 5200 RPM HDDs, they had temps: Idle/Current: 41°C, Min: 24°C, Max: 43°C. (Info from Multi-Report tool).
I needed to replace them, so I chose two ST8000VN004 - Seagate Iron Wolf - 8TB 3.5" 7200 RPM.
During resilvering, one of them reached 65°C, what surprised me, there was same air flow as with previous drives. Currently, HDDs have those temps: Idle/Current: 49°C, Min: 46°C, Max: 56°C. Of course, those values are too high for Multi-Report tool, so it's always critical warning.
I understand that it's 7200RPM and higher capacity, but is normal to have such temperatures even on idle? CPU have 34°C, room temperature 25.6°C, air flow should be fine.

Of course, my first action was to check the datasheet, but it only says "Operating Temperature (drive reported, max °C): 65" and "Nonoperating Temperature (ambient, min / max °C): -40 / 70".
Little bit lower, there is note "It is not recommended to operate at sustained drive temperatures above 60°C. Higher temperatures may affect drive health.". Based on this, I am still fine with the temperatures, but I am still not sure, what are real good/normal temperatures.

Are those temperatures fine? Or I should find the culprit and lower the operating temperatures? Mainly, I am worried if during resilver/scrub, the temps will be more than 60°C.

Ask a room of storage admins why ZFS pools slow down past 80% capacity, and you'll get a lot of confident head-nodding and not many actual answers. It's become industry folklore - repeated so often it's treated as gospel, rarely questioned.

The truth is more useful than the myth. Every filesystem pays some version of this tax eventually. ZFS just happens to name its mechanisms out loud, so it gets blamed by name.

The slowdown comes from three distinct mechanisms - fragmentation, metaslab pressure, and (on spinning disk only) LBA weighting - and how much they affect you depends entirely on your workload.

An archival backup pool with mostly sequential, write-once data? It can comfortably run at 90-95% full. A pool handling heavy random I/O for virtualization or databases? 80% might already be cutting it too close.

We wrote up the real mechanics behind the rule - including where even ZFS's own creators say it can safely bend - so you can stop guessing and start watching the metric that actually matters: performance under your actual workload.

I've been trying (and failing) to set up a minecraft server and in that process I attempted to create a VM on TrueNas Community Edtn. I was then successful in the setup of a network bridge and VM by following the tutorials by Servers@Home and various others.

Unfortunately after successfully setting up the bridge and vm, my NPM proxies no longer work. I get the error when trying to connect to a website: "Err_Connection_Timed_Out". So now all of my proxy HTTPS urls no longer work. Additionally, I feel like the whole network is slower and that is with the VM on or off. I am really unsure what to do.

This is the container log for NGINX.

My network settings

I would appreciate any help or suggestions.

I have a unit with 72 X 4TB drives... it's actually 3 X Netapp put together to create the 72 bay unit. I kind of hate it because of how small the drives are, but I'm broke, I can't afford bigger drives.

This will be mainly use for cold storage as I don't want to have to run this beast of a unit 24/7.

Should I run 3 pools of Raid 5? just 1 drive per every 24 as backup?

A couple months back I posted a NAS drive comparison I'd built for my own TrueNAS, mostly because I was tired of cross-checking datasheets and Backblaze stats every time I added a drive to the pool. The CMR/SMR thing is what started it - I really didn't want to find out a drive was SMR after it killed a resilver.

The feedback here back then was really helpful! This sub doesn't miss much on storage, and a good chunk of it went straight onto my list. 🙂

Here's what's new since June:

- SSDs added, not just HDDs (both SATA and U.2/NVMe), with endurance ratings where the maker publishes them
- price per TB now has history, so you can tell if a "deal" is actually a deal or just back to normal
- idle and seek noise in dB for the drives I could find real acoustic data on
- failure rates now include the Q1 2026 Backblaze quarter, on top of full-year 2025

Same as before: one sortable table, no login, and anything I couldn't verify was left blank instead of guessing: www.nasdisks.com

The SSDs have their own tab if that's what you're after: www.nasdisks.com/ssd/

Fair disclosure: there are Amazon affiliate links on the drive pages, added to cover hosting. The site is free and always will be.

If anyone spots a CMR/SMR tag that's wrong, I'd really appreciate the correction - that's the one thing I want to get right. And if you run a model that isn't listed, feel free to mention it and I'll add it right away.

Hey everyone,

I finished my TrueNAS server recently and I just got an error after a day of use and I just realized it's because my SATA expansion card is not actually RAID-compliant. Any suggestions for something to add more ports? I saw this on Amazon, but I'm not actually sure what to look for:

https://a.co/d/095TTVvS

Thank for your help! :)

This is my appreciation post to those who have contributed to the truenas platform over the years. I recently upgraded from 13.0 core to 24.10 electric eel simply to utilize adding 2 drives to my 3 drive zfs pool. The fact that I am able to add those drives that have been sitting in my closet for a couple years and save a couple hundred bucks is just 👌🥰. Also the fact that the upgrade path went perfect without a hiccup. Gosh, who can I hug.. Thank you!!

https://preview.redd.it/xof596m6azjh1.png?width=673&format=png&auto=webp&s=55a830e29374021391ebca1635012cda54f1c1c4

Im using the community truenas app for immich, i have neglected upgrading for some time and im stuck at app version 2.5, i want to upgrade , how do i incrementally upgrade immich ? all i see is the latest one in truenas, and i dont wanna break anything, i want to possibly upgrade 2.5 -> 2.6 -> 2.7 something like that so that all relevant migration scripts get applied .

Any idea ?

Hello to the community,

TrueNAS newbie here.

I recently purchased an LSI HBA 9300-8i and succesfully flashed the latest (?) 16.00.12.00 firmware and i have also put active cooling on it.

Prior to investing to expensive HDDs I have assembled all of them to a Dell Optiplex 390 with 2 laptop hdds Raid 1 just to check if everything is ok for some time.

Is there a way/command to tell if the ΗΒΑ/system is working without errors prior to buing new disks?

Thanks,

I want to know before I upgrade to version 26 if nvidia 570 driver workround will still function. Thanks.

Hi everyone, how’s it going?

https://preview.redd.it/pb58oz15imjh1.png?width=4096&format=png&auto=webp&s=1094d4c17700cbc0d18dde9c20adee44d6047fa7

Today I’m running the setup shown in the photo (I got the 3D-printed case from this link): a Lenovo M720q with one SATA SSD for the TrueNAS boot pool, one SATA SSD for the apps pool, and four HDDs (two for Plex media and two for personal file backups). The four HDDs are connected via the PCIe x16 slot using an expansion card with four SATA ports, and everything seems to be working fine (I say this because I haven't encountered any issues and can see all the drive information).

I built the NAS this way because I wanted compact, energy-efficient hardware. It serves my needs very well, but since I’ve started using virtual machines on TrueNAS—something I hadn't planned on doing at the start of the project—I’m finding myself wishing I had a dedicated GPU.

What do you think would be a viable solution for connecting the HDDs in a way that frees up the PCIe slot? I’ve seen USB hubs get a lot of criticism; are they really not worth it?

Thanks for your time and help.

Hello TrueNas community, I'm a new TrueNas user and looking for a little insight. I have an old PC I successfully setup TrueNas on.

Specs are:

i5 4690k

16g DDR3

Nvidia 2080

TrueNas installed on 128g SSD

2tb physical -- initial test HDD

Im looking to start off with uploading my movies and tv shows DVD library (already on my main PC). This will expand in the future to photos, docs, music, etc. An additional note, I have a pihole currently serving as my DNS that TrueNas is configured with.

I currently use Jellyfin running in a docker container on a PI hooked up to an 4tb physical drive.

I would like one single user on outside the admin user that I'll use to upload files from different machines (windows machines mainly on local network). In the future I'll want to expand to outside local network uploads.

Long story short I guess I have three questions.

1. Is the hardware of this machine able to house TrueNas and a Jellyfin docker container? The AI response on TrueNas said yes but wanted a real life experience.

2. Any tips on setting up the user with SMB for security and privacy if I want it always available for said user? It doesn't look like 2FA is available with SMB uploads.

3. Is it better for myself to dynamically turn SMB on/off for the user when it's needed?

Any other tips or apps to run in TrueNas?

I originally installed HexOS, then I personally decided to upgrade the underlying TrueNAS install to 26.0.0-BETA.1. Looking back, running my actual server on an unsupported beta was probably not my best idea.

It worked fine for quite a while, until one normal reboot suddenly dropped me into (initramfs) because TrueNAS couldn’t import boot-pool.

BIOS still saw every drive, and my older 25.10.3 boot environment still worked, so the NVMe itself wasn’t dead.

The actual problem turned out to be VFIO grabbing my boot NVMe.

On working 25.10.3, my boot controller 0000:04:00.0 used:
.../drivers/nvme

On broken 26 Beta it was using:
.../drivers/vfio-pci

I found that TrueNAS had generated:
/etc/initramfs-tools/scripts/init-top/truenas_bind_vfio.sh

and the device list inside it actually included my boot NVMe.

The source was an old GPU isolation/passthrough setting. I cleared that setting in the 26 config, then booted once with break=top in GRUB so I could temporarily disable the bad VFIO script before it ran.

Once 26 successfully booted, I rebuilt the initramfs with:
python3 /usr/local/bin/truenas-initrd.py / --database /data/freenas-v1.db

After that, the VFIO script was gone from the rebuilt initramfs and a normal reboot worked.

Everything is back: all pools online, apps running, and the boot NVMe is using the correct nvme driver again.

In short:
Boot into an older working TrueNAS boot environment.

Remove the GPU isolation setting that caused the boot NVMe to be included in the VFIO device list.

Boot 26 once with break=top, disable truenas_bind_vfio.sh for that boot, then rebuild the 26 initramfs from inside 26:
python3 /usr/local/bin/truenas-initrd.py / --database /data/freenas-v1.db

Reboot normally

TL;DR: if TrueNAS 26 Beta suddenly says Failed to import boot-pool, BIOS still sees your drives, and an older boot environment works, check whether vfio-pci has grabbed your boot controller.

In my case, GPU isolation caused TrueNAS 26 Beta to include the boot NVMe in its VFIO device list.

If anyone hits the exact same issue, I have the full troubleshooting process and commands.

Hello, 

I am new to the TrueNAS community. I started setting up my NAS, not easy at first, but I'm getting along slowly!

I had my pools set up properly, and now I wanted to see how to have a proper workflow by dropping my pictures/videos from work to the NAS using the USB and SD card in the front, but the option to mount it has apparently been removed a few years ago...

Is there any easy solution to transfer files quickly? It is very frustrating because it would let me use the USB from my docking station to work on other things, and if I want to transfer from the docking station, it doesn’t really use a good speed even though the MacBook is connected with a 10GBps Ethernet cable.

I saw the possibility to do it with the Shell, but that's not an option, it's not ergonomic at all.

I hope you can help!

Thanks in advance :)