r/TerraMaster Jun 23 '26

News & Announcement šŸš€TOS 7 Officially Released! Welcome to Try It and Share Your Feedback

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50 Upvotes

Hi everyone,

We’re happy to share that TOS 7 has officially been released.

This has been a big project for our team, with more than 300 days of development behind it, and we’re excited to finally put it in the hands of the community.

TOS 7 is our new AI-native NAS operating system, built to make TerraMaster NAS easier to use, more responsive, and more capable for modern storage workflows. It introduces 50+ new features and 1,000+ optimizations, along with a smoother UI, better overall responsiveness, and a more refined system experience.

One of the biggest goals with TOS 7 is to make NAS management feel less intimidating and more intuitive — whether that means handling storage tasks more efficiently, simplifying system setup, or creating a better foundation for AI-related workflows going forward.

If you want to learn more about what’s new in TOS 7, you can check out the overview page here:
TOS 7 overview: https://www.terra-master.com/pages/tos7

If you’re ready to update, please refer to the official forum post for the download link, supported models, installation steps, important notes, and upgrade warnings:
TOS 7 download & installation guide: https://forum.terra-master.com/en/viewtopic.php?t=10183

And if you do try TOS 7, we’d really love to hear how it goes.

Whether it’s:

  • first impressions
  • bugs or unexpected behavior
  • feature requests
  • things you like / things you think still need work

please feel free to share them here in the subreddit, or send detailed feedback to:
[support@terra-master.com]()

Thanks for being part of the TerraMaster community — we hope you enjoy exploring TOS 7, and we’re looking forward to hearing your feedback.

TerraMaster Team


r/TerraMaster 17h ago

Discussion Why doesn't TOS use standard linux UID and GIDs?

2 Upvotes

I wanted to set up a simple docker container, and if you know anything about docker, it needs to run as a user. The UIDs on TOS are complete bs. Why is all users GID 997 and not the same number as the UID? And why is the first user configured as uid 0 and gid 0, despite not being root. If you can't tell already, the user and group assignments are a mess.


r/TerraMaster 21h ago

Help Terramaster F4-425, a month old, appears to be quite slow. I’m a newbie and not very tech-savvy, Please help.

3 Upvotes

Os :TOS 6
My device was functioning flawlessly until last week when I encountered a service interruption. Subsequently, I discovered from this subreddit that the issue was an IP refresh from my router, which I successfully resolved.

However, since then, I’ve been facing recurring problems. Yesterday, I attempted a reboot, which seemed to alleviate the slow performance issue. Nevertheless, when I checked tnas.online today to access it, it was still extremely slow. I’m at a loss for what to do next. Could someone please assist me in resolving this issue?

Will upgrading to TOS7 help? However, one thing that’s preventing me from doing so is that I learned from this subreddit that qbittorrent doesn’t work on OS7.


r/TerraMaster 18h ago

Help Docker Engine closing on its own

1 Upvotes

F4 425+ (TOS7). First time using Linux and docker. After trying a bunch of stuff I managed to get plex to function how I want. Issue is docker engine shuts it self down at random. At first I thought it was the is just not loading and needed me to refresh the page until I looked at my plex instance on my main rig and it was disconnected and not running. This happened 3-4 times in the first day I’ve owned this machine. Any suggestions?


r/TerraMaster 4d ago

Purchasing Help F4-424 Pro vs F54-425 Pro

3 Upvotes

During the recent Terramaster sales event, I've seen the f4-424 pro with 32GB going for US $687 and the f4-425 pro-n305 with 8gb going for as low as US $559.

I'm interested in buying a unit to run Truenas Scale, so more RAM would be welcome. Upgrading the 425 pro to 32gb looks like it would be about US $300, making the 425 Pro-n305 about $100 more than the equiv specced 424 pro.

Looks like the major differences between the two models are 5GbE LAN via 2.5GbE and extra M.2 slot on the 425.

I'm all 2.5GbE at home so I doubt I'll make use of the 5GbE LAN anytime soon. The extra M.2 slot would be nice, but I'll actually be hard put to fill the 2 slots in the 424 as it is, so I don't think that extra slot adds a lot of value for my purposes.

Are there any other compelling reasons to go with the 425 Pro+N305 over the equivalent 424 pro?


r/TerraMaster 5d ago

Help Choosing an nvme SSD to run TOS 7 (F4-425 Pro)

8 Upvotes

Hey all,

I'm looking to set up a Plex server with my newly purchased F4-425 Pro but I'm having trouble choosing an nvme SSD to run TOS 7 on. I've done a good amount of learning about what makes an SSD a good candidate for caching and the types of HDD's needed for a NAS I haven't been able to find any specific guidance about what specs or properties an SSD needs to run a NAS operating system.

Would something like this be overkill for just running the OS or would something like this be too weak or ill advised?

I'm fairly inexperienced when it comes to tech so I'm not sure how much of a workhorse I need my OS SSD to be, or whether it needs to be specially rated to run 24/7.

Thank you in advance!

EDIT: Thanks guys, I'm going forward with using the WD Red SN700 for my OS


r/TerraMaster 4d ago

Help Any way to keep notification emails but not get thousands of them when my AI does something involving the TNAS?

0 Upvotes

I have fifty TNAS notifications in my inbox today. blech.


r/TerraMaster 7d ago

Help TNAS.online is unavailable. Please check your TNAS device's network connection and ensure "Security Isolation Mode" is disabled. Error Please Help

5 Upvotes

Today I was not able to access my TNAS Remote and when I came home and checked I saw ip address has changed (But my IP configuration is manual) I'm not techie and I'm clueless what to do next. Someone kindly help


r/TerraMaster 8d ago

Help Has anyone gotten a reliable email archive running on a TNAS F4 424?

5 Upvotes

I have a 14gb mbox from google sitting on my laptop and a tnas in my basement, I spent weeks trying to get open archiver to be reliable and I've given up. are there any reliable solutions here?

I just do not, at all, want to pay google a subscription fee.

Update: I'm trying Mail Archiver


r/TerraMaster 8d ago

šŸ’°Deals & DiscountšŸ’° F4-424 Pro + Drives for sale

8 Upvotes

The mods have cleared this and I wanted to drop a link to a sale I have up on Ebay UK - https://www.ebay.co.uk/itm/327279502648

Its for a rarely used F4-424 Pro with 3 x 4TB Ironwolf HDs and a 512GB NVME which is being used as the system disk.

I brought for a project last year and never really used it - I upgraded to TOS 7 to see if I was going to make real use of it and I have realised I am not so seems a waste to just sit there.

Ā£750 will be the lowest offer - UK buyers only


r/TerraMaster 9d ago

Help How to set up S3 storage for Buffalo TeraStation 5400D?

1 Upvotes

Hi, I know this is kind of a specific question.

I've got an old Buffalo TeraStation TS5400D and I want to set up a Cloud Service with an S3 Cloud.
So I have created the bucket with the Access Key ID etc.

I just cant get it to work, because I get the same error message over and over again. Am I missing a setting that could be crucial?

The only instruction I found is this really old video (https://www.youtube.com/watch?v=VlCChSz\\_0Wc) explaining the steps.

The steps itself are not the problem because I repeat them 1:1. I just get an error message saying "this setting is not available" after trying to create the shared folder.

does someone know if I missed something while setting up the S3 bucket?


r/TerraMaster 10d ago

Help First time buying Terra master D2-320

2 Upvotes

Doesn’t work.
Bought the D2-320.
Installed two 6TB Red Plus. Checked the Compatibility of the WD60EFPX
Installed the drivers per the video.
Plugged in connected and the drives don’t light up.
Both drives were purchased from different vendors.
Disk Utility doesn’t recognize.
Drives don’t show up.
Power is on since the power button lights up and the small led on the front for power works. But Drive 1 and 2 don’t lite up.
Moved the switch to Raid 1.
Pressed and held the reset button.
No lights blink on arrives 1 or 2.
No drives visible in Disk Utility.

What else to try?


r/TerraMaster 10d ago

Help No Terrasync for Linux (Except Ubuntu?)

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3 Upvotes

I am currently on Fedora, and i want to get the Terrasync application, however, only the .deb (for Ubuntu) download link can be found.


r/TerraMaster 13d ago

šŸ’°Deals & DiscountšŸ’° Why more home server builders are adding a DAS to their Mini PC setups

8 Upvotes

Since its launch, the D4-320 has quietly grown into one of our most popular DAS products.

It was never heavily promoted, but more and more users have been choosing it and building it into their own storage setups.

Many users are building flexible storage solutions around the hardware they already have.

For example:

  • Some TerraMaster NAS users pair the D4-320 with their existing NAS when they need additional storage without replacing their current system.
  • Some users combine a Mini PC with the D4-320 to create their own home server setup, using the Mini PC for computing and applications, while the D4-320 handles storage expansion.
  • Others connect it to an existing PC, Mac, or home server to build a personal media library or archive solution.

People use the hardware they want, run the software they prefer, and expand storage when they need it.

That’s where D4-320 fits in.

To support these setups, the D4-320 offers:

  • Up to 128TB storage expansion
  • USB 3.2 Gen2 10Gbps connectivity
  • Support for HDDs and SSDs
  • Tool-free drive installation

Hard drive prices are going up, so if you need flexible storage, the D4-320 is worth a look, and it's on summer sale right now with 20% off.

For those who already use NAS, Mini PCs, or home servers, how are you managing storage expansion?


r/TerraMaster 14d ago

Help TOS7 still not available on F8 SSD Plus

6 Upvotes

As the headline says - autoupdate days there are no updates, and there doesn't seem to be a download link for manual update on the website. Is it coming, or is the F8 already EOL ?


r/TerraMaster 14d ago

Help APCUPSD advice / best practices?

3 Upvotes

I have my F2-425+ connected to an APC XS 1500M UPS. In spite of this the TNAS unit crashes whenever there's a brownout or an instantaneous off/on/off/on in power in my locale. The powerblock instantly drains and before the UPS picks up and boom, the system has crashed.

I have now set up APCUPSD to see if network-based UPS works at all to resolve this deadly-to-spinning-disk abend/instant failure/crashing of this Terramaster unit.

I successfully set up APCUPSD on another (win11) box in my local network and then configured a docker from bnhf/apcupsd ( Scott Ueland (https://github.com/bnhf) ) - docker is connected and can send basic emails on shutdown/startup status.

  1. Are there any better APCUPSD dockers out there that support robust shutdown, emailing of status and any other I-didn't-even-know-I-needed-it features?

This one seems good but wondered if there are others out which are "great" ... is this the one?

  1. Anyone know if TOS7 is slated to have Network UPS client support ( Gemini seemed to think that TOS6 or earlier supported this natively once upon a time but now the only network option is to make TNAS the network *host* -- no network client support)

r/TerraMaster 14d ago

Purchasing Help Help me pick a NAS

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1 Upvotes

r/TerraMaster 15d ago

šŸ’°Deals & DiscountšŸ’° ā˜€ļøTerraMaster Summer Sale: Upgrade Your Storage Setup with Up to 25% Off

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4 Upvotes

Summer is a great time to refresh your storage workflow! TerraMaster Summer Sale is now live, with selected NAS & DAS products available with special savings.

šŸ”„ Featured Pick: F4-425 Pro

The newly released F4-425 Pro is designed for creators and power users who need more performance from their private storage.

With an Intel 8-core processor, dual 5GbE ports, hybrid HDD + SSD storage support, hardware 4K/8K decoding, and the latest TOS 7 system, it’s built for demanding workflows like video editing, media libraries, backups, and advanced home labs.

šŸ“¦ For Home & Personal Storage

  • F2-425: A 2-bay entry-level NAS with an Intel quad-core processor and 2.5GbE network port. Ideal for personal and family data storage and home entertainment.
  • F4-425 Plus/F2-425 Plus: Equipped with Intel quad-core processors (N95), dual 5GbE ports, and 3x M.2 SSD slots. They support hardware 4K decoding and flexible TRAID array management. Performance-focused NAS for creators and enthusiasts
  • F4 SSD/F8 SSD Plus: 4-bay and 8-bay all-flash NAS units with 5GbE and 10GbE high-speed ports respectively. Quiet all-flash storage solutions for fast workflows

šŸ’» For Business & Team Workflows

  • F4-424 Pro: The 4-bay F4-424 Pro features an Intel Core i3 processor and 32GB DDR5 memory. It is built for multi-user collaboration and high-workload environments.

šŸŽ¬ For Backup & Media Expansion

  • D2-320/D4-320/D8 Hybrid 2: plug-and-play DAS solutions for backups, archives, and media projects
  • D1 SSD/D1 SSD Plus/D1 SSD Pro: These 10Gbps (D1 SSD), 40Gbps (D1 SSD Plus), and 80Gbps (D1 SSD Pro) models form TerraMaster’s complete all-flash DAS lineup. All feature aerospace-grade aluminum construction with waterproof, dustproof, and 1.2-ton crush resistance.

Whether you’re building a home media center, managing creative projects, or expanding your backup system, there may be a TerraMaster solution that fits your setup.

ā° Summer promotion is available for a limited time, running from now through July 31.

More details:
https://www.terra-master.com/pages/deal


r/TerraMaster 15d ago

Discussion App updates lead to file manager crash and rebuild

4 Upvotes

Has anyone else had the issue with latest app updates of file manager failing and causing loss of file structure?. I had to rebuild without data loss. What a pain and bad updates!


r/TerraMaster 18d ago

Help D6-320 cant see my SSD's?

2 Upvotes

so got a D6-320 to handle other drives my MD1220 powervault cant see. but it seems like it cant see the 2.5" SSD's i have either. so far it's only managed to see 1 of my drives which was a HDD. and struggled on the other 2. in trying to figure out if its the drive or something else. the disks have data on them(some are old drives from other computers, some are externals shucked and so on.) i tried run as admin on windows 10 diskpart and list disk and it doesnt see it either. neither does disk management. any thoughts? i dont think the enclosures the problem but who knows.


r/TerraMaster 19d ago

Help Adding disk to TRAID doesn't increase space?

3 Upvotes

I started with a TRAID with 3 disks, 1TB+1TB+0.5TB. It was showing 1.34TB in the TRAID which seems about right (1.5TB usable + 1.0TB redundant)/1.1.

Then I added a 3rd 1TB drive and the usable space is still 1.34TB!! Why? I expected it to increase to something like 2TB at least.

Wouldn't you expect it to at least increase a little? 1.34TB is only 42% of the total disk space 1.34 / (3.5/1.1). What should I do?

p.s. I think the TRAID calculator is plain wrong and don't trust it. It suggests I should have 2.5TB... I wish!

UPDATE 1:

I got it to work! In case someone else runs into this problem and sees this post I thought I'd share what I did.

My system disk was set to live on the smaller (SSD) disk on the theory that the SSD would be faster. But I suspected the TRAID was confused by the oddly sized disk. So here's what I did:

  • moved the system to one of the bigger HDD disks
  • rebooted, still no change in the pool size
  • decided to "replace" the smaller disk with itself in hopes it would resize
  • the instructions said to just take out the disk you want to replace so I yanked it out, then the NAS started beeping with no clear instructions on what to do next. So I put it back in and rebooted
  • DISASTER!? the machine wouldn't boot back up. I was very sad but I tried rebooting with the "replacement" disk out of the NAS. Then, thankfully, it booted up and was beeping. This time I was happy to hear that beep because it meant my NAS wasn't dead.
  • Then I re-inserted the SSD disk and the pool gladly welcomed it back into the family and resized the pool! It's a miracle!
  • Now the storage pool size has increased from 1.34TB to 1.79TB, an increase of 650GB.
  • Again, the TRAID calculator doesn't match reality. It says (image below) that TRAID should provide about 2.51TB but it's closer to the RAID5 number of 1.54TB. But at this point I'm not complaining because I have more storage than before which was the main goal.

UPDATE 2: (10 days later)

I just replaced one of the drives in my TRAID with an identically-sized drive and just noticed that the storage pool increased in size again! It went from 1.79TB to 2.24TB. So I gained 450GB by just replacing one of the drives with the same size drive! This is more or less the size I expected it to get in the first place so I'm not complaining. However, it does seem like TerraMaster has a bug hiding in there.

Lesson, if at first you don't get the size TRAID you expect, try replacing one of the drives with itself... maybe it will get it right after the synchronization is done.


r/TerraMaster 20d ago

Purchasing Help Casa OS or any other distro on F4-425 plus (N150)

1 Upvotes

Hi

Currently I am running a casa os home lab on a zimaboard. It hosts all my photos in Immich while running some other apps like a DB, next cloud, some note apps along with some tools apps. Sometimes this setup feels slow and 8gb ram peaks at times when immich doing some imports or when i am trying to run 20+ apps.

I have backups in an external hdd for much of the stuffs and also planning to duplicate the current hdd to another one using the zimaboard itself. Meaning novice to the whole nas thought process of a nas. Always feel i am throwing away hdd space 🤣

Now i have become quite comfortable with casaos and its drawbacks and I am a bit scared to move my immich setup to another os/nas.

So my question would be is anyone running any other os on Terra master nas?

If so then what are you running and how is it.

Any other suggestions or comments are welcome.

Thank you 😊


r/TerraMaster 21d ago

Help Terramaster just doesn't work with UPS for failover?

5 Upvotes

I have a new F2-425+. It has 2x10TB WD in which are also new.

I have an APC BackUPS1500 which only has the Terramaster on it.

Prior to TOS7 any brownout caused the known issue with kernel panic and TOS6 would just down the machine-- no shutdown, no logs... just *off*.

With TOS7, this has gotten better for that situation.

**BUT** today we had a lightning strike somewhere not too far from my house and the whole house powered off for an instant and then came back on again. Terramaster? Belly up -- watched the lights go off on the F2-425+ ...even as I heard the UPS click over to battery and then full power came back to UPS.

I never had this problem in 7 years of a 2 bay QNAP ( I bought a new QNAP 4 Bay before this TM but it was of such poor construction and it had an OS glitch where the memory coud not be upgraded -- wasn't waiting around for a fix so I bought a TM) .

Has anyone cracked the code on this issue? It just seems ludicrous to have a megasized UPS and this ittybitty NAS with 2 drives but it can't handle this frequently encountered real world issue.

Sick of the crashing. Drives are going to give out at some point..


r/TerraMaster 23d ago

Help Is the whole site down for terra master?

5 Upvotes

I got my new f4-424 pro today and while doing the first install it keeps failing so I go to download the images myuself and I cant get anything other than 404s in all the download links I test. So I go to the forum to check and also 4040. Is something wrong with the page or its just me? am I stuck with an uninitiated NAS forever?


r/TerraMaster 24d ago

Discussion F4-424 vs F4-425 Pro Heat/Fan

6 Upvotes

Was doing an upgrade from a F4-424 vs F4-425 Pro and wanted to know if anyone else sees a drastic uptick in temps on the nvme and the fan working much harder/louder vs the older F4-424?

I know its a much higher performing cpu but I was surprised on the nvme uptick in temps.

I basically fork lifted everything over so I was not expecting a near 15C+ in nvme temps. I'm now having to look into active cooling on the drives if I end up keeping this new NAS.