TS-669L lost RAID 6 configuration after power outage

English Storage
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1

MODEL : TS-669L

FIRMWARE : 4.3.4.2814 Build 20240618

The NAS has six 2TB drives configured in a single group RAID 6

After power outage, the NAS lost the RAID 6 configuration. The six disk have not been modified. The GUI does not have a recovery option.

Is there a manual way to fix the missing RAID Group 1 configuration?

2

Does that NAS have md_checker via SSH?

Hope you have backups