Data Recovery and Disk Utilities Forum @R-TT

The idea was to replace the 3TB disk by 4TB disk on my Qnap Nas.
So I MOVED all my cr2 files to my other NAS (a Thecus with 4x 3 TB in RAID 5 )
Then I remove the 3TB disk from my QNAP and put 4TB in it
Then I move back my pictures from the Thecus to the QNAP
And now a hole folder (mariages pictueres ...

I have 2 NAS-systems
1° Thecus N4200Pro with 4X 3GB Seagate disks in Raid 5
2° QNAO DS212 with 2x 3GB Seagate disks in Raid 1

Both NAS are mapped as Network drives to my PC

Witch product should I use to recover lage (25 - 30 MB) Canon CR2-files and Adobe DNG-files from both NAS ?

Does this work ...