This is not a complete step-by-step data recovery guide. Here I just listed all software needed during my successful recovery.

1. To fix GPT record, use TestDisk.
2. To read and reconstruct RAID, use UFS Explorer Professional Recovery.

1. Linkstation filesystem is XFS
2. Linkstation not using legacy MBR, instead it’s using GPT for partition table record

Some guide:

Posted in NAS.