[Help] Data / system not accessible after power loss

[delta69]

Hello,
A quick update / incident closure:
TerraMaster's "engineers" accessed the system remotely twice, only to inform me that my data was lost and that specialized companies might possibly be able to recover some of it. (Bad news!)
So, I decided to investigate the issue myself: it turned out the reshaping process was stuck at 1.8%, with a bug causing the process to hang upon every reboot (a deadlock).
I was eventually able to recover all my data, but I am genuinely disappointed by the level of expertise provided by official support.
I certainly wouldn't recommend this brand for a professional environment, although I understand that, for budget reasons, it might suffice for home use.
Thanks to everyone for your help; finally, I would recommend leaving the SSH service enabled (something I hadn't done for security reasons, which cost me time since the T9-450 has no video output!) to make maintenance easier.
Best regards

[MikeZhang]

Thank you for your in-depth testing and feedback on TerraMaster products! We are both pleased to see that you successfully recovered the data through your own troubleshooting, and deeply regretful.

To be honest, the freeze after 1.8% leading to a restart deadlock is an extremely subtle, low-level bug. Because this issue typically only triggers under specific file system/array states, standardized remote diagnostic procedures often fail to fully capture such special states. Our engineers' suggestion to seek help from a professional company was based on the most conservative consideration of data security at the time, but it certainly didn't reflect the depth of our investigation into the root cause of the problem. We greatly admire your tenacity.