testdisk

The harddisk (3000 GB / 2794 GiB) seems too small! (< 3000 GB / 2794 GiB)

The following partitions can't be recovered:
     Partition               Start        End    Size in sectors
>  ext4                     0   0  1 364801  33 32 5860530176 [NAS]
   ext4                    16  80 63 364817 114 31 5860530176 [NAS]

ext4 blocksize=4096 Large_file Sparse_SB Recover, 3000 GB / 2794 GiB