As a trial, I took apart the Lacie and installed in Mac.

The testdisk recognized the drive but it recognized the size of the drive like 10 times bigger, suggesting jumper setting is wrong.
Next I tried with Photorec and it seems to be able to recover the files so I might stick with it.

I think after soring this out, I should set up one Mac as proper file server with one drive for full back up so that I can get it back on track much easier!