Data Recovery and Disk Utilities Forum @R-TT

Drive1 may be failing because the scan is so slow that it couldn't complete in the allotted time
Meanwhile Drive 2 looks healthy, it was fully scanned for 15 hours but no files were found.
The drive was filled with about 7.5TB of data but after the scan it is recognized as empty
No encryption
RAID ...

Update: I tried scanning drive #1 of my RAID1, but it seems to have some problem. The 0.1TB test scan shows me 20 days remaining, so it would take years to scan all 8TB. ​​It also says:

Sectors 0-31 failed to read from after 1 attempt. The request could not be performed because of an I/O device ...

I have a RAID1 of two Seagate Barracuda drives of 8TB each. I mistakenly disassembled the RAID, removed one of them and mounted one drive from the other RAID in place. It was quickly recognized in a second without any action, just powered off and reassembled the RAID properly. Unfortunately, the ...