My trusty Terramaster F5-420 finally crapped out on me after 7 years of service.
I would really like to rescue my data without buying a new unit, and move onto unraid, as I have an unused computer that would be perfect for it.
As far as I understand, the NAS uses a standard btrfs software raid array.
https://elliotpadfield.com/blog/tnas
Would unraid be able to recognize and mount the array, so I can move my data off of it, and then rebuild it there?

in theory yes, but not in the unraid setup for its array / pool setup You would need to use the unasiged disk to mount the old array and reformat the disk for use on unraid. TOS tnas is property file system that uses linux files systems. any linux distro would be able to boot to are least mount the disk for data recovery....

However, Since this is a raid of disk all disk would need to be connected and called to be mounted. to maintain the software were to access the data on the disks.

While possible its not a gurantee. this is due to how TOS seutps the disks and raid array... (Very advance mount and other comands may bee needed in other distro (including unraid) to access the data on the disk...

Review:
https://forum.terra-master.com/en/viewtopic.php?t=3191&start=50

your better off seting up unraid with other disk first and coping the data off a TOS recover media in another system this is due to how they use and setup software raid they coined as TRAID

General Docs on it and google:
To recover data from a TerraMaster TRAID configuration, you'll need to remove the drives from the NAS, connect them to a computer, and use data recovery software like ReclaiMe File Recovery Software. TRAID, or TerraMaster RAID, is a flexible disk array management system that allows for online migration, capacity expansion, and redundancy policies. 

Here's a more detailed breakdown:

1. Remove Drives: Carefully remove the hard drives from your TerraMaster NAS.

2. Connect to Computer: Connect the drives to your computer, either directly to the motherboard or via USB-to-SATA adapters.

3. Use Recovery Software: Download, install, and run data recovery software, such as ReclaiMe.

4. Select TRAID Volume: In the software, locate and select the TRAID volume from the list of devices.

5. Start Scanning: Initiate the scanning process to analyze the data on the drives.

6. Preview and Purchase: Once the initial scan is complete, preview the recovered data. If the data looks good, you'll need to purchase a license for the software to copy the data.

7. Copy Recovered Data: Finally, copy the recovered data to a safe storage location, such as an external drive or another NAS. 

Important Considerations:

• Backups are crucial:

  .

  Always back up your data regularly to prevent data loss from hardware failures or other issues. 

• TOS 5 and Btrfs:

  .

  TerraMaster's TOS 5 operating system utilizes Btrfs file systems, which support Snapshot and TFSS (TerraMaster File System Snapshot) protection, offering a way to protect and recover data in case of errors or damage

Hey!
Thanks for the reply.
My situation is somewhat simpler, as my array isn't TRAID, but standard RAID5.
It was originally created on TOS4, and TRAID didn't exist back then.

14 hours ago, Blazehoof said:

but standard RAID5.

If this uses the Linux MD driver, it's not available on Unraid.

8 hours ago, JorgeB said:

If this uses the Linux MD driver, it's not available on Unraid.

depends on how its setup but yes this uses the md driver for software raid with mdadm

Edited June 30, 20251 yr by bmartino1